pull out 'convert' logic in scattergl/convert.js

Author: etpinard

src/constants/gl2d_dashes.js

@@ -12,13 +12,13 @@ var plotAttrs = require('../../plots/attributes');
 var scatterAttrs = require('../scatter/attributes');
 var colorAttrs = require('../../components/colorscale/color_attributes');
 
-var DASHES = require('../../constants/gl2d_dashes');
 var extendFlat = require('../../lib/extend').extendFlat;
 var overrideAll = require('../../plot_api/edit_types').overrideAll;
+var DASHES = require('./constants').DASHES;
 
-var scatterLineAttrs = scatterAttrs.line,
-    scatterMarkerAttrs = scatterAttrs.marker,
-    scatterMarkerLineAttrs = scatterMarkerAttrs.line;
+var scatterLineAttrs = scatterAttrs.line;
+var scatterMarkerAttrs = scatterAttrs.marker;
+var scatterMarkerLineAttrs = scatterMarkerAttrs.line;
 
 var attrs = module.exports = overrideAll({
     x: scatterAttrs.x,

src/traces/scattergl/attributes.js

@@ -0,0 +1,31 @@
+/**
+* Copyright 2012-2018, Plotly, Inc.
+* All rights reserved.
+*
+* This source code is licensed under the MIT license found in the
+* LICENSE file in the root directory of this source tree.
+*/
+
+'use strict';
+
+var SYMBOL_SIZE = 20;
+
+module.exports = {
+    TOO_MANY_POINTS: 1e5,
+
+    SYMBOL_SDF_SIZE: 200,
+    SYMBOL_SIZE: SYMBOL_SIZE,
+    SYMBOL_STROKE: SYMBOL_SIZE / 20,
+
+    DOT_RE: /-dot/,
+    OPEN_RE: /-open/,
+
+    DASHES: {
+        solid: [1],
+        dot: [1, 1],
+        dash: [4, 1],
+        longdash: [8, 1],
+        dashdot: [4, 1, 1, 1],
+        longdashdot: [8, 1, 1, 1]
+    }
+};