diff --git a/threejs/three-trackballcontrols.d.ts b/threejs/three-trackballcontrols.d.ts
index e969bcb5e5..17f45ec914 100644
--- a/threejs/three-trackballcontrols.d.ts
+++ b/threejs/three-trackballcontrols.d.ts
@@ -28,6 +28,10 @@ declare module THREE {
         maxDistance:number;
         keys:number[];
 
+        position0: THREE.Vector3;
+        target0: THREE.Vector3;
+        up0: THREE.Vector3;
+
         update():void;
         reset():void;
         checkDistances():void;
@@ -38,4 +42,4 @@ declare module THREE {
         handleResize():void;
         handleEvent(event: any):void;
     }
-}
+}
\ No newline at end of file
diff --git a/threejs/three-transformcontrols.d.ts b/threejs/three-transformcontrols.d.ts
new file mode 100644
index 0000000000..5be96cd032
--- /dev/null
+++ b/threejs/three-transformcontrols.d.ts
@@ -0,0 +1,23 @@
+// Type definitions for three.js (TransformControls.js)
+// Project: https://github.com/mrdoob/three.js/blob/master/examples/js/controls/TransformControls.js
+// Definitions by: Stefan Profanter <https://github.com/Pro>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="./three.d.ts" />
+
+declare module THREE {
+	class TransformControls extends Object3D {
+		constructor(object:Camera, domElement?:HTMLElement);
+
+		object: Object3D;
+
+		update():void;
+		detach(object: Object3D): void;
+		attach(object: Object3D): void;
+		setMode(mode: string): void;
+		setSnap(snap: any): void;
+		setSize(size:number):void;
+		setSpace(space:string):void;
+
+	}
+}
diff --git a/threejs/three.d.ts b/threejs/three.d.ts
index d87541145c..826d6332fd 100644
--- a/threejs/three.d.ts
+++ b/threejs/three.d.ts
@@ -5672,7 +5672,7 @@ declare module THREE {
     }
 
     export class BoundingBoxHelper extends Mesh {
-        constructor(object: Object3D, hex?: number);
+        constructor(object?: Object3D, hex?: number);
 
         object: Object3D;
         box: Box3;