webvr js meetup initial commit

node_modules/three/src/extras/SceneUtils.js

@@ -0,0 +1,47 @@
+import { Matrix4 } from '../math/Matrix4';
+import { Mesh } from '../objects/Mesh';
+import { Group } from '../objects/Group';
+
+/**
+ * @author alteredq / http://alteredqualia.com/
+ */
+
+var SceneUtils = {
+
+	createMultiMaterialObject: function ( geometry, materials ) {
+
+		var group = new Group();
+
+		for ( var i = 0, l = materials.length; i < l; i ++ ) {
+
+			group.add( new Mesh( geometry, materials[ i ] ) );
+
+		}
+
+		return group;
+
+	},
+
+	detach: function ( child, parent, scene ) {
+
+		child.applyMatrix( parent.matrixWorld );
+		parent.remove( child );
+		scene.add( child );
+
+	},
+
+	attach: function ( child, scene, parent ) {
+
+		var matrixWorldInverse = new Matrix4();
+		matrixWorldInverse.getInverse( parent.matrixWorld );
+		child.applyMatrix( matrixWorldInverse );
+
+		scene.remove( child );
+		parent.add( child );
+
+	}
+
+};
+
+
+export { SceneUtils };