high precision fancy scattergl - don't lose precision in convert

Author: monfera

package.json

@@ -70,7 +70,7 @@
     "gl-plot3d": "^1.5.1",
     "gl-pointcloud2d": "^1.0.0",
     "gl-scatter2d": "monfera/gl-scatter2d#64-bit",
-    "gl-scatter2d-fancy": "^1.1.1",
+    "gl-scatter2d-fancy": "monfera/gl-scatter2d#64-bit",
     "gl-scatter3d": "^1.0.4",
     "gl-select-box": "^1.0.1",
     "gl-shader": "4.2.0",

src/traces/scattergl/convert.js

@@ -389,7 +389,7 @@ proto.updateFancy = function(options) {
 
     var len = x.length,
         idToIndex = new Array(len),
-        positions = new Float32Array(2 * len),
+        positions = new Float64Array(2 * len),
         errorsX = new Float32Array(4 * len),
         errorsY = new Float32Array(4 * len),
         pId = 0,