Function cloneMeshMaterial

src/components/meta-touch-controls.js:477–486

* Some of the controller models share the same material for different parts (buttons, triggers...). * In order to change their color independently we have to create separate materials.

(object3d)

 * In order to change their color independently we have to create separate materials.
 */
function cloneMeshMaterial (object3d) {
  object3d.traverse(function (node) {
    var newMaterial;
    if (node.type !== 'Mesh') return;
    newMaterial = node.material.clone();
    object3d.originalColor = node.material.color;
    node.material.dispose();
    node.material = newMaterial;
  });
}