fix scattergl unselected pt opacity for array pt opacity traces

Author: etpinard

src/traces/scattergl/convert.js

@@ -21,6 +21,7 @@ var subTypes = require('../scatter/subtypes');
 var makeBubbleSizeFn = require('../scatter/make_bubble_size_func');
 
 var constants = require('./constants');
+var DESELECTDIM = require('../../constants/interactions').DESELECTDIM;
 
 function convertStyle(gd, trace) {
     var i;
@@ -41,6 +42,14 @@ function convertStyle(gd, trace) {
         opts.marker = convertMarkerStyle(trace);
         opts.selected = convertMarkerSelection(trace, trace.selected);
         opts.unselected = convertMarkerSelection(trace, trace.unselected);
+
+        if(Array.isArray(trace.marker.opacity)) {
+            var mo = trace.marker.opacity;
+            opts.unselected.opacity = new Array(mo.length);
+            for(i = 0; i < mo.length; i++) {
+                opts.unselected.opacity[i] = DESELECTDIM * mo[i];
+            }
+        }
     }
 
     if(subTypes.hasLines(trace)) {

test/image/baselines/gl2d_selectedpoints.png

@@ -0,0 +1,14 @@
+{
+  "data": [{
+    "name": "array marker opacity edge case",
+    "type": "scattergl",
+    "mode": "markers",
+    "x": [1, 2, 3, 4, 5, 6],
+    "y": [1, 3, 2, 4, 5, 7],
+    "marker": {
+      "size": 20,
+      "opacity": [0.9, 0.8, 0.7, 1, 0.6, 0.8]
+    },
+    "selectedpoints": [1, 4, 2]
+  }]
+}