Add support for chaining

examples/js/loaders/MTLLoader.js

@@ -47,6 +47,7 @@ THREE.MTLLoader.prototype = {
 	 *
 	 * @see setTexturePath
 	 * @param {String} path
+	 * @return {THREE.MTLLoader}
 	 *
 	 * @example
 	 *     mtlLoader.setPath( 'assets/obj/' );
@@ -55,6 +56,7 @@ THREE.MTLLoader.prototype = {
 	setPath: function ( path ) {
 
 		this.path = path;
+		return this;
 
 	},
 
@@ -65,6 +67,7 @@ THREE.MTLLoader.prototype = {
 	 *
 	 * @see setPath
 	 * @param {String} path
+	 * @return {THREE.MTLLoader}
 	 *
 	 * @example
 	 *     mtlLoader.setPath( 'assets/obj/' );
@@ -74,6 +77,7 @@ THREE.MTLLoader.prototype = {
 	setTexturePath: function ( path ) {
 
 		this.texturePath = path;
+		return this;
 
 	},
 
@@ -81,19 +85,21 @@ THREE.MTLLoader.prototype = {
 
 		console.warn( 'THREE.MTLLoader: .setBaseUrl() is deprecated. Use .setTexturePath( path ) for texture path or .setPath( path ) for general base path instead.' );
 
-		this.setTexturePath( path );
+		return this.setTexturePath( path );
 
 	},
 
 	setCrossOrigin: function ( value ) {
 
 		this.crossOrigin = value;
+		return this;
 
 	},
 
 	setMaterialOptions: function ( value ) {
 
 		this.materialOptions = value;
+		return this;
 
 	},
 

examples/js/loaders/OBJLoader.js

@@ -392,6 +392,8 @@ THREE.OBJLoader = ( function () {
 
 			this.path = value;
 
+			return this;
+
 		},
 
 		setMaterials: function ( materials ) {

examples/webgl_loader_obj_mtl.html

@@ -77,33 +77,37 @@
 				// model
 
 				var onProgress = function ( xhr ) {
+
 					if ( xhr.lengthComputable ) {
+
 						var percentComplete = xhr.loaded / xhr.total * 100;
-						console.log( Math.round(percentComplete, 2) + '% downloaded' );
+						console.log( Math.round( percentComplete, 2 ) + '% downloaded' );
+
 					}
+
 				};
 
 				var onError = function ( xhr ) { };
 
 				THREE.Loader.Handlers.add( /\.dds$/i, new THREE.DDSLoader() );
 
-				var mtlLoader = new THREE.MTLLoader();
-				mtlLoader.setPath( 'models/obj/male02/' );
-				mtlLoader.load( 'male02_dds.mtl', function( materials ) {
+				new THREE.MTLLoader()
+					.setPath( 'models/obj/male02/' )
+					.load( 'male02_dds.mtl', function ( materials ) {
 
-					materials.preload();
+						materials.preload();
 
-					var objLoader = new THREE.OBJLoader();
-					objLoader.setMaterials( materials );
-					objLoader.setPath( 'models/obj/male02/' );
-					objLoader.load( 'male02.obj', function ( object ) {
+						new THREE.OBJLoader()
+							.setMaterials( materials )
+							.setPath( 'models/obj/male02/' )
+							.load( 'male02.obj', function ( object ) {
 
-						object.position.y = - 95;
-						scene.add( object );
+								object.position.y = - 95;
+								scene.add( object );
 
-					}, onProgress, onError );
+							}, onProgress, onError );
 
-				});
+					} );
 
 				//