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diff --git a/lib/OrbitControls.js b/lib/OrbitControls.js
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+/**
+ * @author qiao / https://github.com/qiao
+ * @author mrdoob / http://mrdoob.com
+ * @author alteredq / http://alteredqualia.com/
+ * @author WestLangley / http://github.com/WestLangley
+ * @author erich666 / http://erichaines.com
+ */
+/*global THREE, console */
+
+// This set of controls performs orbiting, dollying (zooming), and panning. It maintains
+// the "up" direction as +Y, unlike the TrackballControls. Touch on tablet and phones is
+// supported.
+//
+//    Orbit - left mouse / touch: one finger move
+//    Zoom - middle mouse, or mousewheel / touch: two finger spread or squish
+//    Pan - right mouse, or arrow keys / touch: three finter swipe
+//
+// This is a drop-in replacement for (most) TrackballControls used in examples.
+// That is, include this js file and wherever you see:
+//      controls = new THREE.TrackballControls( camera );
+//      controls.target.z = 150;
+// Simple substitute "OrbitControls" and the control should work as-is.
+
+THREE.OrbitControls = function ( object, domElement ) {
+
+        this.object = object;
+        this.domElement = ( domElement !== undefined ) ? domElement : document;
+
+        // API
+
+        // Set to false to disable this control
+        this.enabled = true;
+
+        // "target" sets the location of focus, where the control orbits around
+        // and where it pans with respect to.
+        this.target = new THREE.Vector3();
+
+        // center is old, deprecated; use "target" instead
+        this.center = this.target;
+
+        // This option actually enables dollying in and out; left as "zoom" for
+        // backwards compatibility
+        this.noZoom = false;
+        this.zoomSpeed = 1.0;
+
+        // Limits to how far you can dolly in and out
+        this.minDistance = 0;
+        this.maxDistance = Infinity;
+
+        // Set to true to disable this control
+        this.noRotate = false;
+        this.rotateSpeed = 1.0;
+
+        // Set to true to disable this control
+        this.noPan = false;
+        this.keyPanSpeed = 7.0; // pixels moved per arrow key push
+
+        // Set to true to automatically rotate around the target
+        this.autoRotate = false;
+        this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60
+
+        // How far you can orbit vertically, upper and lower limits.
+        // Range is 0 to Math.PI radians.
+        this.minPolarAngle = 0; // radians
+        this.maxPolarAngle = Math.PI; // radians
+
+        // Set to true to disable use of the keys
+        this.noKeys = false;
+
+        // The four arrow keys
+        this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
+
+        ////////////
+        // internals
+
+        var scope = this;
+
+        var EPS = 0.000001;
+
+        var rotateStart = new THREE.Vector2();
+        var rotateEnd = new THREE.Vector2();
+        var rotateDelta = new THREE.Vector2();
+
+        var panStart = new THREE.Vector2();
+        var panEnd = new THREE.Vector2();
+        var panDelta = new THREE.Vector2();
+        var panOffset = new THREE.Vector3();
+
+        var offset = new THREE.Vector3();
+
+        var dollyStart = new THREE.Vector2();
+        var dollyEnd = new THREE.Vector2();
+        var dollyDelta = new THREE.Vector2();
+
+        var phiDelta = 0;
+        var thetaDelta = 0;
+        var scale = 1;
+        var pan = new THREE.Vector3();
+
+        var lastPosition = new THREE.Vector3();
+
+        var STATE = { NONE : -1, ROTATE : 0, DOLLY : 1, PAN : 2, TOUCH_ROTATE : 3, TOUCH_DOLLY : 4, TOUCH_PAN : 5 };
+
+        var state = STATE.NONE;
+
+        // for reset
+
+        this.target0 = this.target.clone();
+        this.position0 = this.object.position.clone();
+
+        // events
+
+        var changeEvent = { type: 'change' };
+        var startEvent = { type: 'start'};
+        var endEvent = { type: 'end'};
+
+        this.rotateLeft = function ( angle ) {
+
+                if ( angle === undefined ) {
+
+                        angle = getAutoRotationAngle();
+
+                }
+
+                thetaDelta -= angle;
+
+        };
+
+        this.rotateUp = function ( angle ) {
+
+                if ( angle === undefined ) {
+
+                        angle = getAutoRotationAngle();
+
+                }
+
+                phiDelta -= angle;
+
+        };
+
+        // pass in distance in world space to move left
+        this.panLeft = function ( distance ) {
+
+                var te = this.object.matrix.elements;
+
+                // get X column of matrix
+                panOffset.set( te[ 0 ], te[ 1 ], te[ 2 ] );
+                panOffset.multiplyScalar( - distance );
+                
+                pan.add( panOffset );
+
+        };
+
+        // pass in distance in world space to move up
+        this.panUp = function ( distance ) {
+
+                var te = this.object.matrix.elements;
+
+                // get Y column of matrix
+                panOffset.set( te[ 4 ], te[ 5 ], te[ 6 ] );
+                panOffset.multiplyScalar( distance );
+                
+                pan.add( panOffset );
+
+        };
+        
+        // pass in x,y of change desired in pixel space,
+        // right and down are positive
+        this.pan = function ( deltaX, deltaY ) {
+
+                var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+
+                if ( scope.object.fov !== undefined ) {
+
+                        // perspective
+                        var position = scope.object.position;
+                        var offset = position.clone().sub( scope.target );
+                        var targetDistance = offset.length();
+
+                        // half of the fov is center to top of screen
+                        targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );
+
+                        // we actually don't use screenWidth, since perspective camera is fixed to screen height
+                        scope.panLeft( 2 * deltaX * targetDistance / element.clientHeight );
+                        scope.panUp( 2 * deltaY * targetDistance / element.clientHeight );
+
+                } else if ( scope.object.top !== undefined ) {
+
+                        // orthographic
+                        scope.panLeft( deltaX * (scope.object.right - scope.object.left) / element.clientWidth );
+                        scope.panUp( deltaY * (scope.object.top - scope.object.bottom) / element.clientHeight );
+
+                } else {
+
+                        // camera neither orthographic or perspective
+                        console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
+
+                }
+
+        };
+
+        this.dollyIn = function ( dollyScale ) {
+
+                if ( dollyScale === undefined ) {
+
+                        dollyScale = getZoomScale();
+
+                }
+
+                scale /= dollyScale;
+
+        };
+
+        this.dollyOut = function ( dollyScale ) {
+
+                if ( dollyScale === undefined ) {
+
+                        dollyScale = getZoomScale();
+
+                }
+
+                scale *= dollyScale;
+
+        };
+
+        this.update = function () {
+
+                var position = this.object.position;
+
+                offset.copy( position ).sub( this.target );
+
+                // angle from z-axis around y-axis
+
+                var theta = Math.atan2( offset.x, offset.z );
+
+                // angle from y-axis
+
+                var phi = Math.atan2( Math.sqrt( offset.x * offset.x + offset.z * offset.z ), offset.y );
+
+                if ( this.autoRotate ) {
+
+                        this.rotateLeft( getAutoRotationAngle() );
+
+                }
+
+                theta += thetaDelta;
+                phi += phiDelta;
+
+                // restrict phi to be between desired limits
+                phi = Math.max( this.minPolarAngle, Math.min( this.maxPolarAngle, phi ) );
+
+                // restrict phi to be betwee EPS and PI-EPS
+                phi = Math.max( EPS, Math.min( Math.PI - EPS, phi ) );
+
+                var radius = offset.length() * scale;
+
+                // restrict radius to be between desired limits
+                radius = Math.max( this.minDistance, Math.min( this.maxDistance, radius ) );
+                
+                // move target to panned location
+                this.target.add( pan );
+
+                offset.x = radius * Math.sin( phi ) * Math.sin( theta );
+                offset.y = radius * Math.cos( phi );
+                offset.z = radius * Math.sin( phi ) * Math.cos( theta );
+
+                position.copy( this.target ).add( offset );
+
+                this.object.lookAt( this.target );
+
+                thetaDelta = 0;
+                phiDelta = 0;
+                scale = 1;
+                pan.set( 0, 0, 0 );
+
+                if ( lastPosition.distanceTo( this.object.position ) > 0 ) {
+
+                        this.dispatchEvent( changeEvent );
+
+                        lastPosition.copy( this.object.position );
+
+                }
+
+        };
+
+
+        this.reset = function () {
+
+                state = STATE.NONE;
+
+                this.target.copy( this.target0 );
+                this.object.position.copy( this.position0 );
+
+                this.update();
+
+        };
+
+        function getAutoRotationAngle() {
+
+                return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
+
+        }
+
+        function getZoomScale() {
+
+                return Math.pow( 0.95, scope.zoomSpeed );
+
+        }
+
+        function onMouseDown( event ) {
+
+                if ( scope.enabled === false ) return;
+                event.preventDefault();
+
+                if ( event.button === 0 ) {
+                        if ( scope.noRotate === true ) return;
+
+                        state = STATE.ROTATE;
+
+                        rotateStart.set( event.clientX, event.clientY );
+
+                } else if ( event.button === 1 ) {
+                        if ( scope.noZoom === true ) return;
+
+                        state = STATE.DOLLY;
+
+                        dollyStart.set( event.clientX, event.clientY );
+
+                } else if ( event.button === 2 ) {
+                        if ( scope.noPan === true ) return;
+
+                        state = STATE.PAN;
+
+                        panStart.set( event.clientX, event.clientY );
+
+                }
+
+                scope.domElement.addEventListener( 'mousemove', onMouseMove, false );
+                scope.domElement.addEventListener( 'mouseup', onMouseUp, false );
+                scope.dispatchEvent( startEvent );
+
+        }
+
+        function onMouseMove( event ) {
+
+                if ( scope.enabled === false ) return;
+
+                event.preventDefault();
+
+                var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+
+                if ( state === STATE.ROTATE ) {
+
+                        if ( scope.noRotate === true ) return;
+
+                        rotateEnd.set( event.clientX, event.clientY );
+                        rotateDelta.subVectors( rotateEnd, rotateStart );
+
+                        // rotating across whole screen goes 360 degrees around
+                        scope.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
+
+                        // rotating up and down along whole screen attempts to go 360, but limited to 180
+                        scope.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
+
+                        rotateStart.copy( rotateEnd );
+
+                } else if ( state === STATE.DOLLY ) {
+
+                        if ( scope.noZoom === true ) return;
+
+                        dollyEnd.set( event.clientX, event.clientY );
+                        dollyDelta.subVectors( dollyEnd, dollyStart );
+
+                        if ( dollyDelta.y > 0 ) {
+
+                                scope.dollyIn();
+
+                        } else {
+
+                                scope.dollyOut();
+
+                        }
+
+                        dollyStart.copy( dollyEnd );
+
+                } else if ( state === STATE.PAN ) {
+
+                        if ( scope.noPan === true ) return;
+
+                        panEnd.set( event.clientX, event.clientY );
+                        panDelta.subVectors( panEnd, panStart );
+                        
+                        scope.pan( panDelta.x, panDelta.y );
+
+                        panStart.copy( panEnd );
+
+                }
+
+                scope.update();
+
+        }
+
+        function onMouseUp( /* event */ ) {
+
+                if ( scope.enabled === false ) return;
+
+                scope.domElement.removeEventListener( 'mousemove', onMouseMove, false );
+                scope.domElement.removeEventListener( 'mouseup', onMouseUp, false );
+                scope.dispatchEvent( endEvent );
+                state = STATE.NONE;
+
+        }
+
+        function onMouseWheel( event ) {
+
+                if ( scope.enabled === false || scope.noZoom === true ) return;
+
+                event.preventDefault();
+
+                var delta = 0;
+
+                if ( event.wheelDelta !== undefined ) { // WebKit / Opera / Explorer 9
+
+                        delta = event.wheelDelta;
+
+                } else if ( event.detail !== undefined ) { // Firefox
+
+                        delta = - event.detail;
+
+                }
+
+                if ( delta > 0 ) {
+
+                        scope.dollyOut();
+
+                } else {
+
+                        scope.dollyIn();
+
+                }
+
+                scope.update();
+                scope.dispatchEvent( startEvent );
+                scope.dispatchEvent( endEvent );
+
+        }
+
+        function onKeyDown( event ) {
+
+                if ( scope.enabled === false || scope.noKeys === true || scope.noPan === true ) return;
+                
+                switch ( event.keyCode ) {
+
+                        case scope.keys.UP:
+                                scope.pan( 0, scope.keyPanSpeed );
+                                scope.update();
+                                break;
+
+                        case scope.keys.BOTTOM:
+                                scope.pan( 0, - scope.keyPanSpeed );
+                                scope.update();
+                                break;
+
+                        case scope.keys.LEFT:
+                                scope.pan( scope.keyPanSpeed, 0 );
+                                scope.update();
+                                break;
+
+                        case scope.keys.RIGHT:
+                                scope.pan( - scope.keyPanSpeed, 0 );
+                                scope.update();
+                                break;
+
+                }
+
+        }
+
+        function touchstart( event ) {
+
+                if ( scope.enabled === false ) return;
+
+                switch ( event.touches.length ) {
+
+                        case 1: // one-fingered touch: rotate
+
+                                if ( scope.noRotate === true ) return;
+
+                                state = STATE.TOUCH_ROTATE;
+
+                                rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+                                break;
+
+                        case 2: // two-fingered touch: dolly
+
+                                if ( scope.noZoom === true ) return;
+
+                                state = STATE.TOUCH_DOLLY;
+
+                                var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
+                                var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
+                                var distance = Math.sqrt( dx * dx + dy * dy );
+                                dollyStart.set( 0, distance );
+                                break;
+
+                        case 3: // three-fingered touch: pan
+
+                                if ( scope.noPan === true ) return;
+
+                                state = STATE.TOUCH_PAN;
+
+                                panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+                                break;
+
+                        default:
+
+                                state = STATE.NONE;
+
+                }
+
+                scope.dispatchEvent( startEvent );
+
+        }
+
+        function touchmove( event ) {
+
+                if ( scope.enabled === false ) return;
+
+                event.preventDefault();
+                event.stopPropagation();
+
+                var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+
+                switch ( event.touches.length ) {
+
+                        case 1: // one-fingered touch: rotate
+
+                                if ( scope.noRotate === true ) return;
+                                if ( state !== STATE.TOUCH_ROTATE ) return;
+
+                                rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+                                rotateDelta.subVectors( rotateEnd, rotateStart );
+
+                                // rotating across whole screen goes 360 degrees around
+                                scope.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
+                                // rotating up and down along whole screen attempts to go 360, but limited to 180
+                                scope.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
+
+                                rotateStart.copy( rotateEnd );
+
+                                scope.update();
+                                break;
+
+                        case 2: // two-fingered touch: dolly
+
+                                if ( scope.noZoom === true ) return;
+                                if ( state !== STATE.TOUCH_DOLLY ) return;
+
+                                var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
+                                var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
+                                var distance = Math.sqrt( dx * dx + dy * dy );
+
+                                dollyEnd.set( 0, distance );
+                                dollyDelta.subVectors( dollyEnd, dollyStart );
+
+                                if ( dollyDelta.y > 0 ) {
+
+                                        scope.dollyOut();
+
+                                } else {
+
+                                        scope.dollyIn();
+
+                                }
+
+                                dollyStart.copy( dollyEnd );
+
+                                scope.update();
+                                break;
+
+                        case 3: // three-fingered touch: pan
+
+                                if ( scope.noPan === true ) return;
+                                if ( state !== STATE.TOUCH_PAN ) return;
+
+                                panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+                                panDelta.subVectors( panEnd, panStart );
+                                
+                                scope.pan( panDelta.x, panDelta.y );
+
+                                panStart.copy( panEnd );
+
+                                scope.update();
+                                break;
+
+                        default:
+
+                                state = STATE.NONE;
+
+                }
+
+        }
+
+        function touchend( /* event */ ) {
+
+                if ( scope.enabled === false ) return;
+
+                scope.dispatchEvent( endEvent );
+                state = STATE.NONE;
+
+        }
+
+        this.domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false );
+        this.domElement.addEventListener( 'mousedown', onMouseDown, false );
+        this.domElement.addEventListener( 'mousewheel', onMouseWheel, false );
+        this.domElement.addEventListener( 'DOMMouseScroll', onMouseWheel, false ); // firefox
+
+        this.domElement.addEventListener( 'touchstart', touchstart, false );
+        this.domElement.addEventListener( 'touchend', touchend, false );
+        this.domElement.addEventListener( 'touchmove', touchmove, false );
+
+        window.addEventListener( 'keydown', onKeyDown, false );
+
+};
+
+THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype );