fix reversescale for gl3d traces

Author: etpinard

src/lib/gl_format_color.js

@@ -82,9 +82,13 @@ function formatColor(containerIn, opacityIn, len) {
     return colorOut;
 }
 
-function parseColorScale(colorscale, alpha) {
+function parseColorScale(cont, alpha) {
     if(alpha === undefined) alpha = 1;
 
+    var colorscale = cont.reversescale ?
+        Colorscale.flipScale(cont.colorscale) :
+        cont.colorscale;
+
     return colorscale.map(function(elem) {
         var index = elem[0];
         var color = tinycolor(elem[1]);

src/traces/cone/convert.js

@@ -80,7 +80,7 @@ function convert(scene, trace) {
         trace._len
     );
 
-    coneOpts.colormap = parseColorScale(trace.colorscale);
+    coneOpts.colormap = parseColorScale(trace);
     coneOpts.vertexIntensityBounds = [trace.cmin / trace._normMax, trace.cmax / trace._normMax];
     coneOpts.coneOffset = anchor2coneOffset[trace.anchor];
 

src/traces/mesh3d/convert.js

@@ -162,7 +162,7 @@ proto.update = function(data) {
         this.color = '#fff';
         config.vertexIntensity = data.intensity;
         config.vertexIntensityBounds = [data.cmin, data.cmax];
-        config.colormap = parseColorScale(data.colorscale);
+        config.colormap = parseColorScale(data);
     } else if(data.vertexcolor) {
         this.color = data.vertexcolor[0];
         config.vertexColors = parseColorArray(data.vertexcolor);

src/traces/streamtube/convert.js

@@ -153,7 +153,7 @@ function convert(scene, trace) {
         tubeOpts.startingPositions = startingPositions;
     }
 
-    tubeOpts.colormap = parseColorScale(trace.colorscale);
+    tubeOpts.colormap = parseColorScale(trace);
     tubeOpts.tubeSize = trace.sizeref;
     tubeOpts.maxLength = trace.maxdisplayed;
 

src/traces/surface/convert.js

@@ -364,7 +364,7 @@ proto.update = function(data) {
     var sceneLayout = scene.fullSceneLayout;
     var surface = this.surface;
     var alpha = data.opacity;
-    var colormap = parseColorScale(data.colorscale, alpha);
+    var colormap = parseColorScale(data, alpha);
     var scaleFactor = scene.dataScale;
     var xlen = data.z[0].length;
     var ylen = data._ylength;