Merge pull request #731 from monfera/raf-lighten

Bypassing most of the heavy lifting in the rAF for when there's no interaction

Author: etpinard

src/plots/gl2d/scene2d.js

@@ -483,11 +483,15 @@ proto.draw = function() {
 
             if(nextSelection && (
                 !this.lastPickResult ||
-                this.lastPickResult.trace !== nextSelection.trace ||
+                this.lastPickResult.traceUid !== nextSelection.trace.uid ||
                 this.lastPickResult.dataCoord[0] !== nextSelection.dataCoord[0] ||
                 this.lastPickResult.dataCoord[1] !== nextSelection.dataCoord[1])
             ) {
-                var selection = this.lastPickResult = nextSelection;
+                var selection = nextSelection;
+                this.lastPickResult = {
+                    traceUid: nextSelection.trace ? nextSelection.trace.uid : null,
+                    dataCoord: nextSelection.dataCoord.slice()
+                };
                 this.spikes.update({ center: result.dataCoord });
 
                 selection.screenCoord = [
@@ -523,8 +527,6 @@ proto.draw = function() {
                 }, {
                     container: this.svgContainer
                 });
-
-                this.lastPickResult = { dataCoord: result.dataCoord };
             }
         }
         else if(!result && this.lastPickResult) {