add false value to scene.dragmode

- to remove drag interactions from a given gl3d scene

Author: etpinard

src/plots/gl3d/camera.js

@@ -181,9 +181,13 @@ function createCamera(element, options) {
 
     var lastX = 0, lastY = 0;
     mouseChange(element, function(buttons, x, y, mods) {
-        var rotate = camera.keyBindingMode === 'rotate';
-        var pan = camera.keyBindingMode === 'pan';
-        var zoom = camera.keyBindingMode === 'zoom';
+        var keyBindingMode = camera.keyBindingMode;
+
+        if(keyBindingMode === false) return;
+
+        var rotate = keyBindingMode === 'rotate';
+        var pan = keyBindingMode === 'pan';
+        var zoom = keyBindingMode === 'zoom';
 
         var ctrl = !!mods.control;
         var alt = !!mods.alt;
@@ -226,6 +230,8 @@ function createCamera(element, options) {
     });
 
     mouseWheel(element, function(dx, dy) {
+        if(camera.keyBindingMode === false) return;
+
         var flipX = camera.flipX ? 1 : -1;
         var flipY = camera.flipY ? 1 : -1;
         var t = now();

src/plots/gl3d/layout/layout_attributes.js

@@ -142,7 +142,7 @@ module.exports = {
     dragmode: {
         valType: 'enumerated',
         role: 'info',
-        values: ['orbit', 'turntable', 'zoom', 'pan'],
+        values: ['orbit', 'turntable', 'zoom', 'pan', false],
         dflt: 'turntable',
         description: [
             'Determines the mode of drag interactions for this scene.'

src/plots/gl3d/scene.js

@@ -173,6 +173,8 @@ function initializeGLPlot(scene, fullLayout, canvas, gl) {
     }
 
     var relayoutCallback = function(scene) {
+        if(scene.fullSceneLayout.dragmode === false) return;
+
         var update = {};
         update[scene.id] = getLayoutCamera(scene.camera);
         scene.saveCamera(scene.graphDiv.layout);