keep track of gl3d scene.aspectmode for modebar buttons

Author: archmoj

src/components/modebar/buttons.js

@@ -346,6 +346,7 @@ function handleCamera3d(gd, ev) {
         var sceneId = sceneIds[i];
         var camera = sceneId + '.camera';
         var aspectratio = sceneId + '.aspectratio';
+        var aspectmode = sceneId + '.aspectmode';
         var scene = fullLayout[sceneId]._scene;
         var didUpdate;
 
@@ -365,6 +366,7 @@ function handleCamera3d(gd, ev) {
             aobj[aspectratio + '.x'] = scene.viewInitial.aspectratio.x;
             aobj[aspectratio + '.y'] = scene.viewInitial.aspectratio.y;
             aobj[aspectratio + '.z'] = scene.viewInitial.aspectratio.z;
+            aobj[aspectmode] = scene.viewInitial.aspectmode;
         }
     }
 

src/plots/gl3d/scene.js

@@ -790,6 +790,9 @@ proto.plot = function(sceneData, fullLayout, layout) {
             y: fullSceneLayout.aspectratio.y,
             z: fullSceneLayout.aspectratio.z
         };
+
+        // also keep track of aspectmode here
+        scene.viewInitial.aspectmode = fullSceneLayout.aspectmode;
     }
 
     // Update frame position for multi plots