text: import THREE from 'three'
  
  /**
   * @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 */
  
  ( function () {
  	function OrbitConstraint ( object ) {
  
  		this.object = object;
  
  		// "target" sets the location of focus, where the object orbits around
  		// and where it pans with respect to.
  		this.target = new THREE.Vector3();
  
  		// Limits to how far you can dolly in and out ( PerspectiveCamera only )
  		this.minDistance = 0;
  		this.maxDistance = Infinity;
  
  		// Limits to how far you can zoom in and out ( OrthographicCamera only )
  		this.minZoom = 0;
  		this.maxZoom = Infinity;
  
  		// 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
  
  		// How far you can orbit horizontally, upper and lower limits.
  		// If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ].
  		this.minAzimuthAngle = - Infinity; // radians
  		this.maxAzimuthAngle = Infinity; // radians
  
  		// Set to true to enable damping (inertia)
  		// If damping is enabled, you must call controls.update() in your animation loop
  		this.enableDamping = false;
  		this.dampingFactor = 0.25;
  
  		////////////
  		// internals
  
  		var scope = this;
  
  		var EPS = 0.000001;
  
  		// Current position in spherical coordinate system.
  		var theta;
  		var phi;
  
  		// Pending changes
  		var phiDelta = 0;
  		var thetaDelta = 0;
  		var scale = 1;
  		var panOffset = new THREE.Vector3();
  		var zoomChanged = false;
  
  		// API
  
  		this.getPolarAngle = function () {
  
  			return phi;
  
  		};
  
  		this.getAzimuthalAngle = function () {
  
  			return theta;
  
  		};
  
  		this.rotateLeft = function ( angle ) {
  
  			thetaDelta -= angle;
  
  		};
  
  		this.rotateUp = function ( angle ) {
  
  			phiDelta -= angle;
  
  		};
  
  		// pass in distance in world space to move left
  		this.panLeft = function() {
  
  			var v = new THREE.Vector3();
  
  			return function panLeft ( distance ) {
  
  				var te = this.object.matrix.elements;
  
  				// get X column of matrix
  				v.set( te[ 0 ], te[ 1 ], te[ 2 ] );
  				v.multiplyScalar( - distance );
  
  				panOffset.add( v );
  
  			};
  
  		}();
  
  		// pass in distance in world space to move up
  		this.panUp = function() {
  
  			var v = new THREE.Vector3();
  
  			return function panUp ( distance ) {
  
  				var te = this.object.matrix.elements;
  
  				// get Y column of matrix
  				v.set( te[ 4 ], te[ 5 ], te[ 6 ] );
  				v.multiplyScalar( distance );
  
  				panOffset.add( v );
  
  			};
  
  		}();
  
  		// pass in x,y of change desired in pixel space,
  		// right and down are positive
  		this.pan = function ( deltaX, deltaY, screenWidth, screenHeight ) {
  
  			if ( scope.object instanceof THREE.PerspectiveCamera ) {
  
  				// 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 / screenHeight );
  				scope.panUp( 2 * deltaY * targetDistance / screenHeight );
  
  			} else if ( scope.object instanceof THREE.OrthographicCamera ) {
  
  				// orthographic
  				scope.panLeft( deltaX * ( scope.object.right - scope.object.left ) / screenWidth );
  				scope.panUp( deltaY * ( scope.object.top - scope.object.bottom ) / screenHeight );
  
  			} else {
  
  				// camera neither orthographic or perspective
  				console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
  
  			}
  
  		};
  
  		this.dollyIn = function ( dollyScale ) {
  
  			if ( scope.object instanceof THREE.PerspectiveCamera ) {
  
  				scale /= dollyScale;
  
  			} else if ( scope.object instanceof THREE.OrthographicCamera ) {
  
  				scope.object.zoom = Math.max( this.minZoom, Math.min( this.maxZoom, this.object.zoom * dollyScale ) );
  				scope.object.updateProjectionMatrix();
  				zoomChanged = true;
  
  			} else {
  
  				console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
  
  			}
  
  		};
  
  		this.dollyOut = function ( dollyScale ) {
  
  			if ( scope.object instanceof THREE.PerspectiveCamera ) {
  
  				scale *= dollyScale;
  
  			} else if ( scope.object instanceof THREE.OrthographicCamera ) {
  
  				scope.object.zoom = Math.max( this.minZoom, Math.min( this.maxZoom, this.object.zoom / dollyScale ) );
  				scope.object.updateProjectionMatrix();
  				zoomChanged = true;
  
  			} else {
  
  				console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
  
  			}
  
  		};
  
  		this.update = function() {
  
  			var offset = new THREE.Vector3();
  
  			// so camera.up is the orbit axis
  			var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) );
  			var quatInverse = quat.clone().inverse();
  
  			var lastPosition = new THREE.Vector3();
  			var lastQuaternion = new THREE.Quaternion();
  
  			return function () {
  
  				var position = this.object.position;
  
  				offset.copy( position ).sub( this.target );
  
  				// rotate offset to "y-axis-is-up" space
  				offset.applyQuaternion( quat );
  
  				// angle from z-axis around y-axis
  
  				theta = Math.atan2( offset.x, offset.z );
  
  				// angle from y-axis
  
  				phi = Math.atan2( Math.sqrt( offset.x * offset.x + offset.z * offset.z ), offset.y );
  
  				theta += thetaDelta;
  				phi += phiDelta;
  
  				// restrict theta to be between desired limits
  				theta = Math.max( this.minAzimuthAngle, Math.min( this.maxAzimuthAngle, theta ) );
  
  				// 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( panOffset );
  
  				offset.x = radius * Math.sin( phi ) * Math.sin( theta );
  				offset.y = radius * Math.cos( phi );
  				offset.z = radius * Math.sin( phi ) * Math.cos( theta );
  
  				// rotate offset back to "camera-up-vector-is-up" space
  				offset.applyQuaternion( quatInverse );
  
  				position.copy( this.target ).add( offset );
  
  				this.object.lookAt( this.target );
  
  				if ( this.enableDamping === true ) {
  
  					thetaDelta *= ( 1 - this.dampingFactor );
  					phiDelta *= ( 1 - this.dampingFactor );
  
  				} else {
  
  					thetaDelta = 0;
  					phiDelta = 0;
  
  				}
  
  				scale = 1;
  				panOffset.set( 0, 0, 0 );
  
  				// update condition is:
  				// min(camera displacement, camera rotation in radians)^2 > EPS
  				// using small-angle approximation cos(x/2) = 1 - x^2 / 8
  
  				if ( zoomChanged ||
  					 lastPosition.distanceToSquared( this.object.position ) > EPS ||
  				    8 * ( 1 - lastQuaternion.dot( this.object.quaternion ) ) > EPS ) {
  
  					lastPosition.copy( this.object.position );
  					lastQuaternion.copy( this.object.quaternion );
  					zoomChanged = false;
  
  					return true;
  
  				}
  
  				return false;
  
  			};
  
  		}();
  
  	};
  
  
  	// 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
  
  	THREE.OrbitControls = function ( object, domElement ) {
  
  		var constraint = new OrbitConstraint( object );
  
  		this.domElement = ( domElement !== undefined ) ? domElement : document;
  
  		// API
  
  		Object.defineProperty( this, 'constraint', {
  
  			get: function() {
  
  				return constraint;
  
  			}
  
  		} );
  
  		this.getPolarAngle = function () {
  
  			return constraint.getPolarAngle();
  
  		};
  
  		this.getAzimuthalAngle = function () {
  
  			return constraint.getAzimuthalAngle();
  
  		};
  
  		// Set to false to disable this control
  		this.enabled = true;
  
  		// 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.
  		// Set to false to disable zooming
  		this.enableZoom = true;
  		this.zoomSpeed = 1.0;
  
  		// Set to false to disable rotating
  		this.enableRotate = true;
  		this.rotateSpeed = 1.0;
  
  		// Set to false to disable panning
  		this.enablePan = true;
  		this.keyPanSpeed = 7.0;	// pixels moved per arrow key push
  
  		// Set to true to automatically rotate around the target
  		// If auto-rotate is enabled, you must call controls.update() in your animation loop
  		this.autoRotate = false;
  		this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60
  
  		// Set to false to disable use of the keys
  		this.enableKeys = true;
  
  		// The four arrow keys
  		this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
  
  		// Mouse buttons
  		this.mouseButtons = { ORBIT: THREE.MOUSE.LEFT, ZOOM: THREE.MOUSE.MIDDLE, PAN: THREE.MOUSE.RIGHT };
  
  		////////////
  		// internals
  
  		var scope = this;
  
  		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 dollyStart = new THREE.Vector2();
  		var dollyEnd = new THREE.Vector2();
  		var dollyDelta = new THREE.Vector2();
  
  		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();
  		this.zoom0 = this.object.zoom;
  
  		// events
  
  		var changeEvent = { type: 'change' };
  		var startEvent = { type: 'start' };
  		var endEvent = { type: 'end' };
  
  		// pass in x,y of change desired in pixel space,
  		// right and down are positive
  		function pan( deltaX, deltaY ) {
  
  			var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
  
  			constraint.pan( deltaX, deltaY, element.clientWidth, element.clientHeight );
  
  		}
  
  		this.update = function () {
  
  			if ( this.autoRotate && state === STATE.NONE ) {
  
  				constraint.rotateLeft( getAutoRotationAngle() );
  
  			}
  
  			if ( constraint.update() === true ) {
  
  				this.dispatchEvent( changeEvent );
  
  			}
  
  		};
  
  		this.reset = function () {
  
  			state = STATE.NONE;
  
  			this.target.copy( this.target0 );
  			this.object.position.copy( this.position0 );
  			this.object.zoom = this.zoom0;
  
  			this.object.updateProjectionMatrix();
  			this.dispatchEvent( changeEvent );
  
  			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 === scope.mouseButtons.ORBIT ) {
  
  				if ( scope.enableRotate === false ) return;
  
  				state = STATE.ROTATE;
  
  				rotateStart.set( event.clientX, event.clientY );
  
  			} else if ( event.button === scope.mouseButtons.ZOOM ) {
  
  				if ( scope.enableZoom === false ) return;
  
  				state = STATE.DOLLY;
  
  				dollyStart.set( event.clientX, event.clientY );
  
  			} else if ( event.button === scope.mouseButtons.PAN ) {
  
  				if ( scope.enablePan === false ) return;
  
  				state = STATE.PAN;
  
  				panStart.set( event.clientX, event.clientY );
  
  			}
  
  			if ( state !== STATE.NONE ) {
  
  				document.addEventListener( 'mousemove', onMouseMove, false );
  				document.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.enableRotate === false ) return;
  
  				rotateEnd.set( event.clientX, event.clientY );
  				rotateDelta.subVectors( rotateEnd, rotateStart );
  
  				// rotating across whole screen goes 360 degrees around
  				constraint.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
  				constraint.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
  
  				rotateStart.copy( rotateEnd );
  
  			} else if ( state === STATE.DOLLY ) {
  
  				if ( scope.enableZoom === false ) return;
  
  				dollyEnd.set( event.clientX, event.clientY );
  				dollyDelta.subVectors( dollyEnd, dollyStart );
  
  				if ( dollyDelta.y > 0 ) {
  
  					constraint.dollyIn( getZoomScale() );
  
  				} else if ( dollyDelta.y < 0 ) {
  
  					constraint.dollyOut( getZoomScale() );
  
  				}
  
  				dollyStart.copy( dollyEnd );
  
  			} else if ( state === STATE.PAN ) {
  
  				if ( scope.enablePan === false ) return;
  
  				panEnd.set( event.clientX, event.clientY );
  				panDelta.subVectors( panEnd, panStart );
  
  				pan( panDelta.x, panDelta.y );
  
  				panStart.copy( panEnd );
  
  			}
  
  			if ( state !== STATE.NONE ) scope.update();
  
  		}
  
  		function onMouseUp( /* event */ ) {
  
  			if ( scope.enabled === false ) return;
  
  			document.removeEventListener( 'mousemove', onMouseMove, false );
  			document.removeEventListener( 'mouseup', onMouseUp, false );
  			scope.dispatchEvent( endEvent );
  			state = STATE.NONE;
  
  		}
  
  		function onMouseWheel( event ) {
  
  			if ( scope.enabled === false || scope.enableZoom === false || state !== STATE.NONE ) return;
  
  			event.preventDefault();
  			event.stopPropagation();
  
  			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 ) {
  
  				constraint.dollyOut( getZoomScale() );
  
  			} else if ( delta < 0 ) {
  
  				constraint.dollyIn( getZoomScale() );
  
  			}
  
  			scope.update();
  			scope.dispatchEvent( startEvent );
  			scope.dispatchEvent( endEvent );
  
  		}
  
  		function onKeyDown( event ) {
  
  			if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;
  
  			switch ( event.keyCode ) {
  
  				case scope.keys.UP:
  					pan( 0, scope.keyPanSpeed );
  					scope.update();
  					break;
  
  				case scope.keys.BOTTOM:
  					pan( 0, - scope.keyPanSpeed );
  					scope.update();
  					break;
  
  				case scope.keys.LEFT:
  					pan( scope.keyPanSpeed, 0 );
  					scope.update();
  					break;
  
  				case scope.keys.RIGHT:
  					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.enableRotate === false ) return;
  
  					state = STATE.TOUCH_ROTATE;
  
  					rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
  					break;
  
  				case 2:	// two-fingered touch: dolly
  
  					if ( scope.enableZoom === false ) 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.enablePan === false ) return;
  
  					state = STATE.TOUCH_PAN;
  
  					panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
  					break;
  
  				default:
  
  					state = STATE.NONE;
  
  			}
  
  			if ( 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.enableRotate === false ) 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
  					constraint.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
  					constraint.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
  
  					rotateStart.copy( rotateEnd );
  
  					scope.update();
  					break;
  
  				case 2: // two-fingered touch: dolly
  
  					if ( scope.enableZoom === false ) 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 ) {
  
  						constraint.dollyOut( getZoomScale() );
  
  					} else if ( dollyDelta.y < 0 ) {
  
  						constraint.dollyIn( getZoomScale() );
  
  					}
  
  					dollyStart.copy( dollyEnd );
  
  					scope.update();
  					break;
  
  				case 3: // three-fingered touch: pan
  
  					if ( scope.enablePan === false ) return;
  					if ( state !== STATE.TOUCH_PAN ) return;
  
  					panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
  					panDelta.subVectors( panEnd, panStart );
  
  					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;
  
  		}
  
  		function contextmenu( event ) {
  
  			event.preventDefault();
  
  		}
  
  		this.dispose = function() {
  
  			this.domElement.removeEventListener( 'contextmenu', contextmenu, false );
  			this.domElement.removeEventListener( 'mousedown', onMouseDown, false );
  			this.domElement.removeEventListener( 'mousewheel', onMouseWheel, false );
  			this.domElement.removeEventListener( 'MozMousePixelScroll', onMouseWheel, false ); // firefox
  
  			this.domElement.removeEventListener( 'touchstart', touchstart, false );
  			this.domElement.removeEventListener( 'touchend', touchend, false );
  			this.domElement.removeEventListener( 'touchmove', touchmove, false );
  
  			document.removeEventListener( 'mousemove', onMouseMove, false );
  			document.removeEventListener( 'mouseup', onMouseUp, false );
  
  			window.removeEventListener( 'keydown', onKeyDown, false );
  
  		}
  
  		this.domElement.addEventListener( 'contextmenu', contextmenu, false );
  
  		this.domElement.addEventListener( 'mousedown', onMouseDown, false );
  		this.domElement.addEventListener( 'mousewheel', onMouseWheel, false );
  		this.domElement.addEventListener( 'MozMousePixelScroll', 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 );
  
  		// force an update at start
  		this.update();
  
  	};
  
  	THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype );
  	THREE.OrbitControls.prototype.constructor = THREE.OrbitControls;
  
  	Object.defineProperties( THREE.OrbitControls.prototype, {
  
  		object: {
  
  			get: function () {
  
  				return this.constraint.object;
  
  			}
  
  		},
  
  		target: {
  
  			get: function () {
  
  				return this.constraint.target;
  
  			},
  
  			set: function ( value ) {
  
  				console.warn( 'THREE.OrbitControls: target is now immutable. Use target.set() instead.' );
  				this.constraint.target.copy( value );
  
  			}
  
  		},
  
  		minDistance : {
  
  			get: function () {
  
  				return this.constraint.minDistance;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.minDistance = value;
  
  			}
  
  		},
  
  		maxDistance : {
  
  			get: function () {
  
  				return this.constraint.maxDistance;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.maxDistance = value;
  
  			}
  
  		},
  
  		minZoom : {
  
  			get: function () {
  
  				return this.constraint.minZoom;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.minZoom = value;
  
  			}
  
  		},
  
  		maxZoom : {
  
  			get: function () {
  
  				return this.constraint.maxZoom;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.maxZoom = value;
  
  			}
  
  		},
  
  		minPolarAngle : {
  
  			get: function () {
  
  				return this.constraint.minPolarAngle;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.minPolarAngle = value;
  
  			}
  
  		},
  
  		maxPolarAngle : {
  
  			get: function () {
  
  				return this.constraint.maxPolarAngle;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.maxPolarAngle = value;
  
  			}
  
  		},
  
  		minAzimuthAngle : {
  
  			get: function () {
  
  				return this.constraint.minAzimuthAngle;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.minAzimuthAngle = value;
  
  			}
  
  		},
  
  		maxAzimuthAngle : {
  
  			get: function () {
  
  				return this.constraint.maxAzimuthAngle;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.maxAzimuthAngle = value;
  
  			}
  
  		},
  
  		enableDamping : {
  
  			get: function () {
  
  				return this.constraint.enableDamping;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.enableDamping = value;
  
  			}
  
  		},
  
  		dampingFactor : {
  
  			get: function () {
  
  				return this.constraint.dampingFactor;
  
  			},
  
  			set: function ( value ) {
  
  				this.constraint.dampingFactor = value;
  
  			}
  
  		},
  
  		// backward compatibility
  
  		noZoom: {
  
  			get: function () {
  
  				console.warn( 'THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead.' );
  				return ! this.enableZoom;
  
  			},
  
  			set: function ( value ) {
  
  				console.warn( 'THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead.' );
  				this.enableZoom = ! value;
  
  			}
  
  		},
  
  		noRotate: {
  
  			get: function () {
  
  				console.warn( 'THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead.' );
  				return ! this.enableRotate;
  
  			},
  
  			set: function ( value ) {
  
  				console.warn( 'THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead.' );
  				this.enableRotate = ! value;
  
  			}
  
  		},
  
  		noPan: {
  
  			get: function () {
  
  				console.warn( 'THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead.' );
  				return ! this.enablePan;
  
  			},
  
  			set: function ( value ) {
  
  				console.warn( 'THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead.' );
  				this.enablePan = ! value;
  
  			}
  
  		},
  
  		noKeys: {
  
  			get: function () {
  
  				console.warn( 'THREE.OrbitControls: .noKeys has been deprecated. Use .enableKeys instead.' );
  				return ! this.enableKeys;
  
  			},
  
  			set: function ( value ) {
  
  				console.warn( 'THREE.OrbitControls: .noKeys has been deprecated. Use .enableKeys instead.' );
  				this.enableKeys = ! value;
  
  			}
  
  		},
  
  		staticMoving : {
  
  			get: function () {
  
  				console.warn( 'THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead.' );
  				return ! this.constraint.enableDamping;
  
  			},
  
  			set: function ( value ) {
  
  				console.warn( 'THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead.' );
  				this.constraint.enableDamping = ! value;
  
  			}
  
  		},
  
  		dynamicDampingFactor : {
  
  			get: function () {
  
  				console.warn( 'THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead.' );
  				return this.constraint.dampingFactor;
  
  			},
  
  			set: function ( value ) {
  
  				console.warn( 'THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead.' );
  				this.constraint.dampingFactor = value;
  
  			}
  
  		}
  
  	} );
  
  }() );
  