text: /**
   * @author James Baicoianu / http://www.baicoianu.com/
   */
  
  THREE.FlyControls = function ( object, domElement ) {
  
  	this.object = object;
  
  	this.domElement = ( domElement !== undefined ) ? domElement : document;
  	if ( domElement ) this.domElement.setAttribute( 'tabindex', - 1 );
  
  	// API
  
  	this.movementSpeed = 1.0;
  	this.rollSpeed = 0.005;
  
  	this.dragToLook = false;
  	this.autoForward = false;
  
  	// disable default target object behavior
  
  	// internals
  
  	this.tmpQuaternion = new THREE.Quaternion();
  
  	this.mouseStatus = 0;
  
  	this.moveState = { up: 0, down: 0, left: 0, right: 0, forward: 0, back: 0, pitchUp: 0, pitchDown: 0, yawLeft: 0, yawRight: 0, rollLeft: 0, rollRight: 0 };
  	this.moveVector = new THREE.Vector3( 0, 0, 0 );
  	this.rotationVector = new THREE.Vector3( 0, 0, 0 );
  
  	this.keydown = function ( event ) {
  
  		if ( event.altKey ) {
  
  			return;
  
  		}
  
  		//event.preventDefault();
  
  		switch ( event.keyCode ) {
  
  			case 16: /* shift */ this.movementSpeedMultiplier = .1; break;
  
  			case 87: /*W*/ this.moveState.forward = 1; break;
  			case 83: /*S*/ this.moveState.back = 1; break;
  
  			case 65: /*A*/ this.moveState.left = 1; break;
  			case 68: /*D*/ this.moveState.right = 1; break;
  
  			case 82: /*R*/ this.moveState.up = 1; break;
  			case 70: /*F*/ this.moveState.down = 1; break;
  
  			case 38: /*up*/ this.moveState.pitchUp = 1; break;
  			case 40: /*down*/ this.moveState.pitchDown = 1; break;
  
  			case 37: /*left*/ this.moveState.yawLeft = 1; break;
  			case 39: /*right*/ this.moveState.yawRight = 1; break;
  
  			case 81: /*Q*/ this.moveState.rollLeft = 1; break;
  			case 69: /*E*/ this.moveState.rollRight = 1; break;
  
  		}
  
  		this.updateMovementVector();
  		this.updateRotationVector();
  
  	};
  
  	this.keyup = function ( event ) {
  
  		switch ( event.keyCode ) {
  
  			case 16: /* shift */ this.movementSpeedMultiplier = 1; break;
  
  			case 87: /*W*/ this.moveState.forward = 0; break;
  			case 83: /*S*/ this.moveState.back = 0; break;
  
  			case 65: /*A*/ this.moveState.left = 0; break;
  			case 68: /*D*/ this.moveState.right = 0; break;
  
  			case 82: /*R*/ this.moveState.up = 0; break;
  			case 70: /*F*/ this.moveState.down = 0; break;
  
  			case 38: /*up*/ this.moveState.pitchUp = 0; break;
  			case 40: /*down*/ this.moveState.pitchDown = 0; break;
  
  			case 37: /*left*/ this.moveState.yawLeft = 0; break;
  			case 39: /*right*/ this.moveState.yawRight = 0; break;
  
  			case 81: /*Q*/ this.moveState.rollLeft = 0; break;
  			case 69: /*E*/ this.moveState.rollRight = 0; break;
  
  		}
  
  		this.updateMovementVector();
  		this.updateRotationVector();
  
  	};
  
  	this.mousedown = function ( event ) {
  
  		if ( this.domElement !== document ) {
  
  			this.domElement.focus();
  
  		}
  
  		event.preventDefault();
  		event.stopPropagation();
  
  		if ( this.dragToLook ) {
  
  			this.mouseStatus ++;
  
  		} else {
  
  			switch ( event.button ) {
  
  				case 0: this.moveState.forward = 1; break;
  				case 2: this.moveState.back = 1; break;
  
  			}
  
  			this.updateMovementVector();
  
  		}
  
  	};
  
  	this.mousemove = function ( event ) {
  
  		if ( ! this.dragToLook || this.mouseStatus > 0 ) {
  
  			var container = this.getContainerDimensions();
  			var halfWidth = container.size[ 0 ] / 2;
  			var halfHeight = container.size[ 1 ] / 2;
  
  			this.moveState.yawLeft = - ( ( event.pageX - container.offset[ 0 ] ) - halfWidth ) / halfWidth;
  			this.moveState.pitchDown = ( ( event.pageY - container.offset[ 1 ] ) - halfHeight ) / halfHeight;
  
  			this.updateRotationVector();
  
  		}
  
  	};
  
  	this.mouseup = function ( event ) {
  
  		event.preventDefault();
  		event.stopPropagation();
  
  		if ( this.dragToLook ) {
  
  			this.mouseStatus --;
  
  			this.moveState.yawLeft = this.moveState.pitchDown = 0;
  
  		} else {
  
  			switch ( event.button ) {
  
  				case 0: this.moveState.forward = 0; break;
  				case 2: this.moveState.back = 0; break;
  
  			}
  
  			this.updateMovementVector();
  
  		}
  
  		this.updateRotationVector();
  
  	};
  
  	this.update = function ( delta ) {
  
  		var moveMult = delta * this.movementSpeed;
  		var rotMult = delta * this.rollSpeed;
  
  		this.object.translateX( this.moveVector.x * moveMult );
  		this.object.translateY( this.moveVector.y * moveMult );
  		this.object.translateZ( this.moveVector.z * moveMult );
  
  		this.tmpQuaternion.set( this.rotationVector.x * rotMult, this.rotationVector.y * rotMult, this.rotationVector.z * rotMult, 1 ).normalize();
  		this.object.quaternion.multiply( this.tmpQuaternion );
  
  		// expose the rotation vector for convenience
  		this.object.rotation.setFromQuaternion( this.object.quaternion, this.object.rotation.order );
  
  
  	};
  
  	this.updateMovementVector = function () {
  
  		var forward = ( this.moveState.forward || ( this.autoForward && ! this.moveState.back ) ) ? 1 : 0;
  
  		this.moveVector.x = ( - this.moveState.left + this.moveState.right );
  		this.moveVector.y = ( - this.moveState.down + this.moveState.up );
  		this.moveVector.z = ( - forward + this.moveState.back );
  
  		//console.log( 'move:', [ this.moveVector.x, this.moveVector.y, this.moveVector.z ] );
  
  	};
  
  	this.updateRotationVector = function () {
  
  		this.rotationVector.x = ( - this.moveState.pitchDown + this.moveState.pitchUp );
  		this.rotationVector.y = ( - this.moveState.yawRight + this.moveState.yawLeft );
  		this.rotationVector.z = ( - this.moveState.rollRight + this.moveState.rollLeft );
  
  		//console.log( 'rotate:', [ this.rotationVector.x, this.rotationVector.y, this.rotationVector.z ] );
  
  	};
  
  	this.getContainerDimensions = function () {
  
  		if ( this.domElement != document ) {
  
  			return {
  				size: [ this.domElement.offsetWidth, this.domElement.offsetHeight ],
  				offset: [ this.domElement.offsetLeft, this.domElement.offsetTop ]
  			};
  
  		} else {
  
  			return {
  				size: [ window.innerWidth, window.innerHeight ],
  				offset: [ 0, 0 ]
  			};
  
  		}
  
  	};
  
  	function bind( scope, fn ) {
  
  		return function () {
  
  			fn.apply( scope, arguments );
  
  		};
  
  	}
  
  	function contextmenu( event ) {
  
  		event.preventDefault();
  
  	}
  
  	this.dispose = function () {
  
  		this.domElement.removeEventListener( 'contextmenu', contextmenu, false );
  		this.domElement.removeEventListener( 'mousedown', _mousedown, false );
  		this.domElement.removeEventListener( 'mousemove', _mousemove, false );
  		this.domElement.removeEventListener( 'mouseup', _mouseup, false );
  
  		window.removeEventListener( 'keydown', _keydown, false );
  		window.removeEventListener( 'keyup', _keyup, false );
  
  	};
  
  	var _mousemove = bind( this, this.mousemove );
  	var _mousedown = bind( this, this.mousedown );
  	var _mouseup = bind( this, this.mouseup );
  	var _keydown = bind( this, this.keydown );
  	var _keyup = bind( this, this.keyup );
  
  	this.domElement.addEventListener( 'contextmenu', contextmenu, false );
  
  	this.domElement.addEventListener( 'mousemove', _mousemove, false );
  	this.domElement.addEventListener( 'mousedown', _mousedown, false );
  	this.domElement.addEventListener( 'mouseup', _mouseup, false );
  
  	window.addEventListener( 'keydown', _keydown, false );
  	window.addEventListener( 'keyup', _keyup, false );
  
  	this.updateMovementVector();
  	this.updateRotationVector();
  
  };
  /**
   * @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
   */
  
  // This set of controls performs orbiting, dollying (zooming), and panning.
  // Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
  //
  //    Orbit - left mouse / touch: one-finger move
  //    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
  //    Pan - right mouse, or left mouse + ctrl/metaKey, or arrow keys / touch: two-finger move
  
  THREE.OrbitControls = function ( object, domElement ) {
  
  	this.object = object;
  
  	this.domElement = ( domElement !== undefined ) ? domElement : document;
  
  	// Set to false to disable this control
  	this.enabled = true;
  
  	// "target" sets the location of focus, where the object orbits around
  	this.target = new THREE.Vector3();
  
  	// How far you can dolly in and out ( PerspectiveCamera only )
  	this.minDistance = 0;
  	this.maxDistance = Infinity;
  
  	// 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;
  
  	// 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.panSpeed = 1.0;
  	this.screenSpacePanning = false; // if true, pan in screen-space
  	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 = { LEFT: THREE.MOUSE.LEFT, MIDDLE: THREE.MOUSE.MIDDLE, RIGHT: THREE.MOUSE.RIGHT };
  
  	// for reset
  	this.target0 = this.target.clone();
  	this.position0 = this.object.position.clone();
  	this.zoom0 = this.object.zoom;
  
  	//
  	// public methods
  	//
  
  	this.getPolarAngle = function () {
  
  		return spherical.phi;
  
  	};
  
  	this.getAzimuthalAngle = function () {
  
  		return spherical.theta;
  
  	};
  
  	this.saveState = function () {
  
  		scope.target0.copy( scope.target );
  		scope.position0.copy( scope.object.position );
  		scope.zoom0 = scope.object.zoom;
  
  	};
  
  	this.reset = function () {
  
  		scope.target.copy( scope.target0 );
  		scope.object.position.copy( scope.position0 );
  		scope.object.zoom = scope.zoom0;
  
  		scope.object.updateProjectionMatrix();
  		scope.dispatchEvent( changeEvent );
  
  		scope.update();
  
  		state = STATE.NONE;
  
  	};
  
  	// this method is exposed, but perhaps it would be better if we can make it private...
  	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 update() {
  
  			var position = scope.object.position;
  
  			offset.copy( position ).sub( scope.target );
  
  			// rotate offset to "y-axis-is-up" space
  			offset.applyQuaternion( quat );
  
  			// angle from z-axis around y-axis
  			spherical.setFromVector3( offset );
  
  			if ( scope.autoRotate && state === STATE.NONE ) {
  
  				rotateLeft( getAutoRotationAngle() );
  
  			}
  
  			spherical.theta += sphericalDelta.theta;
  			spherical.phi += sphericalDelta.phi;
  
  			// restrict theta to be between desired limits
  			spherical.theta = Math.max( scope.minAzimuthAngle, Math.min( scope.maxAzimuthAngle, spherical.theta ) );
  
  			// restrict phi to be between desired limits
  			spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );
  
  			spherical.makeSafe();
  
  
  			spherical.radius *= scale;
  
  			// restrict radius to be between desired limits
  			spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );
  
  			// move target to panned location
  			scope.target.add( panOffset );
  
  			offset.setFromSpherical( spherical );
  
  			// rotate offset back to "camera-up-vector-is-up" space
  			offset.applyQuaternion( quatInverse );
  
  			position.copy( scope.target ).add( offset );
  
  			scope.object.lookAt( scope.target );
  
  			if ( scope.enableDamping === true ) {
  
  				sphericalDelta.theta *= ( 1 - scope.dampingFactor );
  				sphericalDelta.phi *= ( 1 - scope.dampingFactor );
  
  				panOffset.multiplyScalar( 1 - scope.dampingFactor );
  
  			} else {
  
  				sphericalDelta.set( 0, 0, 0 );
  
  				panOffset.set( 0, 0, 0 );
  
  			}
  
  			scale = 1;
  
  			// 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( scope.object.position ) > EPS ||
  				8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {
  
  				scope.dispatchEvent( changeEvent );
  
  				lastPosition.copy( scope.object.position );
  				lastQuaternion.copy( scope.object.quaternion );
  				zoomChanged = false;
  
  				return true;
  
  			}
  
  			return false;
  
  		};
  
  	}();
  
  	this.dispose = function () {
  
  		scope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );
  		scope.domElement.removeEventListener( 'mousedown', onMouseDown, false );
  		scope.domElement.removeEventListener( 'wheel', onMouseWheel, false );
  
  		scope.domElement.removeEventListener( 'touchstart', onTouchStart, false );
  		scope.domElement.removeEventListener( 'touchend', onTouchEnd, false );
  		scope.domElement.removeEventListener( 'touchmove', onTouchMove, false );
  
  		document.removeEventListener( 'mousemove', onMouseMove, false );
  		document.removeEventListener( 'mouseup', onMouseUp, false );
  
  		window.removeEventListener( 'keydown', onKeyDown, false );
  
  		//scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?
  
  	};
  
  	//
  	// internals
  	//
  
  	var scope = this;
  
  	var changeEvent = { type: 'change' };
  	var startEvent = { type: 'start' };
  	var endEvent = { type: 'end' };
  
  	var STATE = { NONE: - 1, ROTATE: 0, DOLLY: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_DOLLY_PAN: 4 };
  
  	var state = STATE.NONE;
  
  	var EPS = 0.000001;
  
  	// current position in spherical coordinates
  	var spherical = new THREE.Spherical();
  	var sphericalDelta = new THREE.Spherical();
  
  	var scale = 1;
  	var panOffset = new THREE.Vector3();
  	var zoomChanged = false;
  
  	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();
  
  	function getAutoRotationAngle() {
  
  		return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
  
  	}
  
  	function getZoomScale() {
  
  		return Math.pow( 0.95, scope.zoomSpeed );
  
  	}
  
  	function rotateLeft( angle ) {
  
  		sphericalDelta.theta -= angle;
  
  	}
  
  	function rotateUp( angle ) {
  
  		sphericalDelta.phi -= angle;
  
  	}
  
  	var panLeft = function () {
  
  		var v = new THREE.Vector3();
  
  		return function panLeft( distance, objectMatrix ) {
  
  			v.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix
  			v.multiplyScalar( - distance );
  
  			panOffset.add( v );
  
  		};
  
  	}();
  
  	var panUp = function () {
  
  		var v = new THREE.Vector3();
  
  		return function panUp( distance, objectMatrix ) {
  
  			if ( scope.screenSpacePanning === true ) {
  
  				v.setFromMatrixColumn( objectMatrix, 1 );
  
  			} else {
  
  				v.setFromMatrixColumn( objectMatrix, 0 );
  				v.crossVectors( scope.object.up, v );
  
  			}
  
  			v.multiplyScalar( distance );
  
  			panOffset.add( v );
  
  		};
  
  	}();
  
  	// deltaX and deltaY are in pixels; right and down are positive
  	var pan = function () {
  
  		var offset = new THREE.Vector3();
  
  		return function pan( deltaX, deltaY ) {
  
  			var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
  
  			if ( scope.object.isPerspectiveCamera ) {
  
  				// perspective
  				var position = scope.object.position;
  				offset.copy( position ).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 use only clientHeight here so aspect ratio does not distort speed
  				panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );
  				panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );
  
  			} else if ( scope.object.isOrthographicCamera ) {
  
  				// orthographic
  				panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
  				panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );
  
  			} else {
  
  				// camera neither orthographic nor perspective
  				console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
  				scope.enablePan = false;
  
  			}
  
  		};
  
  	}();
  
  	function dollyIn( dollyScale ) {
  
  		if ( scope.object.isPerspectiveCamera ) {
  
  			scale /= dollyScale;
  
  		} else if ( scope.object.isOrthographicCamera ) {
  
  			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );
  			scope.object.updateProjectionMatrix();
  			zoomChanged = true;
  
  		} else {
  
  			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
  			scope.enableZoom = false;
  
  		}
  
  	}
  
  	function dollyOut( dollyScale ) {
  
  		if ( scope.object.isPerspectiveCamera ) {
  
  			scale *= dollyScale;
  
  		} else if ( scope.object.isOrthographicCamera ) {
  
  			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );
  			scope.object.updateProjectionMatrix();
  			zoomChanged = true;
  
  		} else {
  
  			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
  			scope.enableZoom = false;
  
  		}
  
  	}
  
  	//
  	// event callbacks - update the object state
  	//
  
  	function handleMouseDownRotate( event ) {
  
  		//console.log( 'handleMouseDownRotate' );
  
  		rotateStart.set( event.clientX, event.clientY );
  
  	}
  
  	function handleMouseDownDolly( event ) {
  
  		//console.log( 'handleMouseDownDolly' );
  
  		dollyStart.set( event.clientX, event.clientY );
  
  	}
  
  	function handleMouseDownPan( event ) {
  
  		//console.log( 'handleMouseDownPan' );
  
  		panStart.set( event.clientX, event.clientY );
  
  	}
  
  	function handleMouseMoveRotate( event ) {
  
  		//console.log( 'handleMouseMoveRotate' );
  
  		rotateEnd.set( event.clientX, event.clientY );
  
  		rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
  
  		var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
  
  		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height
  
  		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
  
  		rotateStart.copy( rotateEnd );
  
  		scope.update();
  
  
  	}
  
  	function handleMouseMoveDolly( event ) {
  
  		//console.log( 'handleMouseMoveDolly' );
  
  		dollyEnd.set( event.clientX, event.clientY );
  
  		dollyDelta.subVectors( dollyEnd, dollyStart );
  
  		if ( dollyDelta.y > 0 ) {
  
  			dollyIn( getZoomScale() );
  
  		} else if ( dollyDelta.y < 0 ) {
  
  			dollyOut( getZoomScale() );
  
  		}
  
  		dollyStart.copy( dollyEnd );
  
  		scope.update();
  
  	}
  
  	function handleMouseMovePan( event ) {
  
  		//console.log( 'handleMouseMovePan' );
  
  		panEnd.set( event.clientX, event.clientY );
  
  		panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
  
  		pan( panDelta.x, panDelta.y );
  
  		panStart.copy( panEnd );
  
  		scope.update();
  
  	}
  
  	function handleMouseUp( event ) {
  
  		 //console.log( 'handleMouseUp' );
  
  	}
  
  	function handleMouseWheel( event ) {
  
  		 //console.log( 'handleMouseWheel' );
  
  		if ( event.deltaY < 0 ) {
  
  			dollyOut( getZoomScale() );
  
  		} else if ( event.deltaY > 0 ) {
  
  			dollyIn( getZoomScale() );
  
  		}
  
  		scope.update();
  
  	}
  
  	function handleKeyDown( event ) {
  
  		////console.log( 'handleKeyDown' );
  
  		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 handleTouchStartRotate( event ) {
  
  		//console.log( 'handleTouchStartRotate' );
  
  		rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
  
  	}
  
  	function handleTouchStartDollyPan( event ) {
  
  		//console.log( 'handleTouchStartDollyPan' );
  
  		if ( scope.enableZoom ) {
  
  			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 );
  
  		}
  
  		if ( scope.enablePan ) {
  
  			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
  			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
  
  			panStart.set( x, y );
  
  		}
  
  	}
  
  	function handleTouchMoveRotate( event ) {
  
  		//console.log( 'handleTouchMoveRotate' );
  
  		rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
  
  		rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
  
  		var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
  
  		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height
  
  		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
  
  		rotateStart.copy( rotateEnd );
  
  		scope.update();
  
  	}
  
  	function handleTouchMoveDollyPan( event ) {
  
  		//console.log( 'handleTouchMoveDollyPan' );
  
  		if ( scope.enableZoom ) {
  
  			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.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );
  
  			dollyIn( dollyDelta.y );
  
  			dollyStart.copy( dollyEnd );
  
  		}
  
  		if ( scope.enablePan ) {
  
  			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
  			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
  
  			panEnd.set( x, y );
  
  			panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
  
  			pan( panDelta.x, panDelta.y );
  
  			panStart.copy( panEnd );
  
  		}
  
  		scope.update();
  
  	}
  
  	function handleTouchEnd( event ) {
  
  		//console.log( 'handleTouchEnd' );
  
  	}
  
  	//
  	// event handlers - FSM: listen for events and reset state
  	//
  
  	function onMouseDown( event ) {
  
  		if ( scope.enabled === false ) return;
  
  		event.preventDefault();
  
  		switch ( event.button ) {
  
  			case scope.mouseButtons.LEFT:
  
  				if ( event.ctrlKey || event.metaKey ) {
  
  					if ( scope.enablePan === false ) return;
  
  					handleMouseDownPan( event );
  
  					state = STATE.PAN;
  
  				} else {
  
  					if ( scope.enableRotate === false ) return;
  
  					handleMouseDownRotate( event );
  
  					state = STATE.ROTATE;
  
  				}
  
  				break;
  
  			case scope.mouseButtons.MIDDLE:
  
  				if ( scope.enableZoom === false ) return;
  
  				handleMouseDownDolly( event );
  
  				state = STATE.DOLLY;
  
  				break;
  
  			case scope.mouseButtons.RIGHT:
  
  				if ( scope.enablePan === false ) return;
  
  				handleMouseDownPan( event );
  
  				state = STATE.PAN;
  
  				break;
  
  		}
  
  		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();
  
  		switch ( state ) {
  
  			case STATE.ROTATE:
  
  				if ( scope.enableRotate === false ) return;
  
  				handleMouseMoveRotate( event );
  
  				break;
  
  			case STATE.DOLLY:
  
  				if ( scope.enableZoom === false ) return;
  
  				handleMouseMoveDolly( event );
  
  				break;
  
  			case STATE.PAN:
  
  				if ( scope.enablePan === false ) return;
  
  				handleMouseMovePan( event );
  
  				break;
  
  		}
  
  	}
  
  	function onMouseUp( event ) {
  
  		if ( scope.enabled === false ) return;
  
  		handleMouseUp( event );
  
  		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 && state !== STATE.ROTATE ) ) return;
  
  		event.preventDefault();
  		event.stopPropagation();
  
  		scope.dispatchEvent( startEvent );
  
  		handleMouseWheel( event );
  
  		scope.dispatchEvent( endEvent );
  
  	}
  
  	function onKeyDown( event ) {
  
  		if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;
  
  		handleKeyDown( event );
  
  	}
  
  	function onTouchStart( event ) {
  
  		if ( scope.enabled === false ) return;
  
  		event.preventDefault();
  
  		switch ( event.touches.length ) {
  
  			case 1:	// one-fingered touch: rotate
  
  				if ( scope.enableRotate === false ) return;
  
  				handleTouchStartRotate( event );
  
  				state = STATE.TOUCH_ROTATE;
  
  				break;
  
  			case 2:	// two-fingered touch: dolly-pan
  
  				if ( scope.enableZoom === false && scope.enablePan === false ) return;
  
  				handleTouchStartDollyPan( event );
  
  				state = STATE.TOUCH_DOLLY_PAN;
  
  				break;
  
  			default:
  
  				state = STATE.NONE;
  
  		}
  
  		if ( state !== STATE.NONE ) {
  
  			scope.dispatchEvent( startEvent );
  
  		}
  
  	}
  
  	function onTouchMove( event ) {
  
  		if ( scope.enabled === false ) return;
  
  		event.preventDefault();
  		event.stopPropagation();
  
  		switch ( event.touches.length ) {
  
  			case 1: // one-fingered touch: rotate
  
  				if ( scope.enableRotate === false ) return;
  				if ( state !== STATE.TOUCH_ROTATE ) return; // is this needed?
  
  				handleTouchMoveRotate( event );
  
  				break;
  
  			case 2: // two-fingered touch: dolly-pan
  
  				if ( scope.enableZoom === false && scope.enablePan === false ) return;
  				if ( state !== STATE.TOUCH_DOLLY_PAN ) return; // is this needed?
  
  				handleTouchMoveDollyPan( event );
  
  				break;
  
  			default:
  
  				state = STATE.NONE;
  
  		}
  
  	}
  
  	function onTouchEnd( event ) {
  
  		if ( scope.enabled === false ) return;
  
  		handleTouchEnd( event );
  
  		scope.dispatchEvent( endEvent );
  
  		state = STATE.NONE;
  
  	}
  
  	function onContextMenu( event ) {
  
  		if ( scope.enabled === false ) return;
  
  		event.preventDefault();
  
  	}
  
  	//
  
  	scope.domElement.addEventListener( 'contextmenu', onContextMenu, false );
  
  	scope.domElement.addEventListener( 'mousedown', onMouseDown, false );
  	scope.domElement.addEventListener( 'wheel', onMouseWheel, false );
  
  	scope.domElement.addEventListener( 'touchstart', onTouchStart, false );
  	scope.domElement.addEventListener( 'touchend', onTouchEnd, false );
  	scope.domElement.addEventListener( 'touchmove', onTouchMove, 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, {
  
  	center: {
  
  		get: function () {
  
  			console.warn( 'THREE.OrbitControls: .center has been renamed to .target' );
  			return this.target;
  
  		}
  
  	},
  
  	// 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.enableDamping;
  
  		},
  
  		set: function ( value ) {
  
  			console.warn( 'THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead.' );
  			this.enableDamping = ! value;
  
  		}
  
  	},
  
  	dynamicDampingFactor: {
  
  		get: function () {
  
  			console.warn( 'THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead.' );
  			return this.dampingFactor;
  
  		},
  
  		set: function ( value ) {
  
  			console.warn( 'THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead.' );
  			this.dampingFactor = value;
  
  		}
  
  	}
  
  } );
  
  ( function () {
  
  	const _raycaster = new THREE.Raycaster();
  
  	const _tempVector = new THREE.Vector3();
  
  	const _tempVector2 = new THREE.Vector3();
  
  	const _tempQuaternion = new THREE.Quaternion();
  
  	const _unit = {
  		X: new THREE.Vector3( 1, 0, 0 ),
  		Y: new THREE.Vector3( 0, 1, 0 ),
  		Z: new THREE.Vector3( 0, 0, 1 )
  	};
  	const _changeEvent = {
  		type: 'change'
  	};
  	const _mouseDownEvent = {
  		type: 'mouseDown'
  	};
  	const _mouseUpEvent = {
  		type: 'mouseUp',
  		mode: null
  	};
  	const _objectChangeEvent = {
  		type: 'objectChange'
  	};
  
  	class TransformControls extends THREE.Object3D {
  
  		constructor( camera, domElement ) {
  
  			super();
  
  			if ( domElement === undefined ) {
  
  				console.warn( 'THREE.TransformControls: The second parameter "domElement" is now mandatory.' );
  				domElement = document;
  
  			}
  
  			this.visible = false;
  			this.domElement = domElement;
  			this.domElement.style.touchAction = 'none'; // disable touch scroll
  
  			const _gizmo = new TransformControlsGizmo();
  
  			this._gizmo = _gizmo;
  			this.add( _gizmo );
  
  			const _plane = new TransformControlsPlane();
  
  			this._plane = _plane;
  			this.add( _plane );
  			const scope = this; // Defined getter, setter and store for a property
  
  			function defineProperty( propName, defaultValue ) {
  
  				let propValue = defaultValue;
  				Object.defineProperty( scope, propName, {
  					get: function () {
  
  						return propValue !== undefined ? propValue : defaultValue;
  
  					},
  					set: function ( value ) {
  
  						if ( propValue !== value ) {
  
  							propValue = value;
  							_plane[ propName ] = value;
  							_gizmo[ propName ] = value;
  							scope.dispatchEvent( {
  								type: propName + '-changed',
  								value: value
  							} );
  							scope.dispatchEvent( _changeEvent );
  
  						}
  
  					}
  				} );
  				scope[ propName ] = defaultValue;
  				_plane[ propName ] = defaultValue;
  				_gizmo[ propName ] = defaultValue;
  
  			} // Define properties with getters/setter
  			// Setting the defined property will automatically trigger change event
  			// Defined properties are passed down to gizmo and plane
  
  
  			defineProperty( 'camera', camera );
  			defineProperty( 'object', undefined );
  			defineProperty( 'enabled', true );
  			defineProperty( 'axis', null );
  			defineProperty( 'mode', 'translate' );
  			defineProperty( 'translationSnap', null );
  			defineProperty( 'rotationSnap', null );
  			defineProperty( 'scaleSnap', null );
  			defineProperty( 'space', 'world' );
  			defineProperty( 'size', 1 );
  			defineProperty( 'dragging', false );
  			defineProperty( 'showX', true );
  			defineProperty( 'showY', true );
  			defineProperty( 'showZ', true ); // Reusable utility variables
  
  			const worldPosition = new THREE.Vector3();
  			const worldPositionStart = new THREE.Vector3();
  			const worldQuaternion = new THREE.Quaternion();
  			const worldQuaternionStart = new THREE.Quaternion();
  			const cameraPosition = new THREE.Vector3();
  			const cameraQuaternion = new THREE.Quaternion();
  			const pointStart = new THREE.Vector3();
  			const pointEnd = new THREE.Vector3();
  			const rotationAxis = new THREE.Vector3();
  			const rotationAngle = 0;
  			const eye = new THREE.Vector3(); // TODO: remove properties unused in plane and gizmo
  
  			defineProperty( 'worldPosition', worldPosition );
  			defineProperty( 'worldPositionStart', worldPositionStart );
  			defineProperty( 'worldQuaternion', worldQuaternion );
  			defineProperty( 'worldQuaternionStart', worldQuaternionStart );
  			defineProperty( 'cameraPosition', cameraPosition );
  			defineProperty( 'cameraQuaternion', cameraQuaternion );
  			defineProperty( 'pointStart', pointStart );
  			defineProperty( 'pointEnd', pointEnd );
  			defineProperty( 'rotationAxis', rotationAxis );
  			defineProperty( 'rotationAngle', rotationAngle );
  			defineProperty( 'eye', eye );
  			this._offset = new THREE.Vector3();
  			this._startNorm = new THREE.Vector3();
  			this._endNorm = new THREE.Vector3();
  			this._cameraScale = new THREE.Vector3();
  			this._parentPosition = new THREE.Vector3();
  			this._parentQuaternion = new THREE.Quaternion();
  			this._parentQuaternionInv = new THREE.Quaternion();
  			this._parentScale = new THREE.Vector3();
  			this._worldScaleStart = new THREE.Vector3();
  			this._worldQuaternionInv = new THREE.Quaternion();
  			this._worldScale = new THREE.Vector3();
  			this._positionStart = new THREE.Vector3();
  			this._quaternionStart = new THREE.Quaternion();
  			this._scaleStart = new THREE.Vector3();
  			this._getPointer = getPointer.bind( this );
  			this._onPointerDown = onPointerDown.bind( this );
  			this._onPointerHover = onPointerHover.bind( this );
  			this._onPointerMove = onPointerMove.bind( this );
  			this._onPointerUp = onPointerUp.bind( this );
  			this.domElement.addEventListener( 'pointerdown', this._onPointerDown );
  			this.domElement.addEventListener( 'pointermove', this._onPointerHover );
  			this.domElement.addEventListener( 'pointerup', this._onPointerUp );
  
  		} // updateMatrixWorld  updates key transformation variables
  
  
  		updateMatrixWorld() {
  
  			if ( this.object !== undefined ) {
  
  				this.object.updateMatrixWorld();
  
  				if ( this.object.parent === null ) {
  
  					console.error( 'TransformControls: The attached 3D object must be a part of the scene graph.' );
  
  				} else {
  
  					this.object.parent.matrixWorld.decompose( this._parentPosition, this._parentQuaternion, this._parentScale );
  
  				}
  
  				this.object.matrixWorld.decompose( this.worldPosition, this.worldQuaternion, this._worldScale );
  
  				this._parentQuaternionInv.copy( this._parentQuaternion ).invert();
  
  				this._worldQuaternionInv.copy( this.worldQuaternion ).invert();
  
  			}
  
  			this.camera.updateMatrixWorld();
  			this.camera.matrixWorld.decompose( this.cameraPosition, this.cameraQuaternion, this._cameraScale );
  			this.eye.copy( this.cameraPosition ).sub( this.worldPosition ).normalize();
  			super.updateMatrixWorld( this );
  
  		}
  
  		pointerHover( pointer ) {
  
  			if ( this.object === undefined || this.dragging === true ) return;
  
  			_raycaster.setFromCamera( pointer, this.camera );
  
  			const intersect = intersectObjectWithRay( this._gizmo.picker[ this.mode ], _raycaster );
  
  			if ( intersect ) {
  
  				this.axis = intersect.object.name;
  
  			} else {
  
  				this.axis = null;
  
  			}
  
  		}
  
  		pointerDown( pointer ) {
  
  			if ( this.object === undefined || this.dragging === true || pointer.button !== 0 ) return;
  
  			if ( this.axis !== null ) {
  
  				_raycaster.setFromCamera( pointer, this.camera );
  
  				const planeIntersect = intersectObjectWithRay( this._plane, _raycaster, true );
  
  				if ( planeIntersect ) {
  
  					let space = this.space;
  
  					if ( this.mode === 'scale' ) {
  
  						space = 'local';
  
  					} else if ( this.axis === 'E' || this.axis === 'XYZE' || this.axis === 'XYZ' ) {
  
  						space = 'world';
  
  					}
  
  					if ( space === 'local' && this.mode === 'rotate' ) {
  
  						const snap = this.rotationSnap;
  						if ( this.axis === 'X' && snap ) this.object.rotation.x = Math.round( this.object.rotation.x / snap ) * snap;
  						if ( this.axis === 'Y' && snap ) this.object.rotation.y = Math.round( this.object.rotation.y / snap ) * snap;
  						if ( this.axis === 'Z' && snap ) this.object.rotation.z = Math.round( this.object.rotation.z / snap ) * snap;
  
  					}
  
  					this.object.updateMatrixWorld();
  					this.object.parent.updateMatrixWorld();
  
  					this._positionStart.copy( this.object.position );
  
  					this._quaternionStart.copy( this.object.quaternion );
  
  					this._scaleStart.copy( this.object.scale );
  
  					this.object.matrixWorld.decompose( this.worldPositionStart, this.worldQuaternionStart, this._worldScaleStart );
  					this.pointStart.copy( planeIntersect.point ).sub( this.worldPositionStart );
  
  				}
  
  				this.dragging = true;
  				_mouseDownEvent.mode = this.mode;
  				this.dispatchEvent( _mouseDownEvent );
  
  			}
  
  		}
  
  		pointerMove( pointer ) {
  
  			const axis = this.axis;
  			const mode = this.mode;
  			const object = this.object;
  			let space = this.space;
  
  			if ( mode === 'scale' ) {
  
  				space = 'local';
  
  			} else if ( axis === 'E' || axis === 'XYZE' || axis === 'XYZ' ) {
  
  				space = 'world';
  
  			}
  
  			if ( object === undefined || axis === null || this.dragging === false || pointer.button !== - 1 ) return;
  
  			_raycaster.setFromCamera( pointer, this.camera );
  
  			const planeIntersect = intersectObjectWithRay( this._plane, _raycaster, true );
  			if ( ! planeIntersect ) return;
  			this.pointEnd.copy( planeIntersect.point ).sub( this.worldPositionStart );
  
  			if ( mode === 'translate' ) {
  
  				// Apply translate
  				this._offset.copy( this.pointEnd ).sub( this.pointStart );
  
  				if ( space === 'local' && axis !== 'XYZ' ) {
  
  					this._offset.applyQuaternion( this._worldQuaternionInv );
  
  				}
  
  				if ( axis.indexOf( 'X' ) === - 1 ) this._offset.x = 0;
  				if ( axis.indexOf( 'Y' ) === - 1 ) this._offset.y = 0;
  				if ( axis.indexOf( 'Z' ) === - 1 ) this._offset.z = 0;
  
  				if ( space === 'local' && axis !== 'XYZ' ) {
  
  					this._offset.applyQuaternion( this._quaternionStart ).divide( this._parentScale );
  
  				} else {
  
  					this._offset.applyQuaternion( this._parentQuaternionInv ).divide( this._parentScale );
  
  				}
  
  				object.position.copy( this._offset ).add( this._positionStart ); // Apply translation snap
  
  				if ( this.translationSnap ) {
  
  					if ( space === 'local' ) {
  
  						object.position.applyQuaternion( _tempQuaternion.copy( this._quaternionStart ).invert() );
  
  						if ( axis.search( 'X' ) !== - 1 ) {
  
  							object.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;
  
  						}
  
  						if ( axis.search( 'Y' ) !== - 1 ) {
  
  							object.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;
  
  						}
  
  						if ( axis.search( 'Z' ) !== - 1 ) {
  
  							object.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;
  
  						}
  
  						object.position.applyQuaternion( this._quaternionStart );
  
  					}
  
  					if ( space === 'world' ) {
  
  						if ( object.parent ) {
  
  							object.position.add( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );
  
  						}
  
  						if ( axis.search( 'X' ) !== - 1 ) {
  
  							object.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;
  
  						}
  
  						if ( axis.search( 'Y' ) !== - 1 ) {
  
  							object.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;
  
  						}
  
  						if ( axis.search( 'Z' ) !== - 1 ) {
  
  							object.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;
  
  						}
  
  						if ( object.parent ) {
  
  							object.position.sub( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );
  
  						}
  
  					}
  
  				}
  
  			} else if ( mode === 'scale' ) {
  
  				if ( axis.search( 'XYZ' ) !== - 1 ) {
  
  					let d = this.pointEnd.length() / this.pointStart.length();
  					if ( this.pointEnd.dot( this.pointStart ) < 0 ) d *= - 1;
  
  					_tempVector2.set( d, d, d );
  
  				} else {
  
  					_tempVector.copy( this.pointStart );
  
  					_tempVector2.copy( this.pointEnd );
  
  					_tempVector.applyQuaternion( this._worldQuaternionInv );
  
  					_tempVector2.applyQuaternion( this._worldQuaternionInv );
  
  					_tempVector2.divide( _tempVector );
  
  					if ( axis.search( 'X' ) === - 1 ) {
  
  						_tempVector2.x = 1;
  
  					}
  
  					if ( axis.search( 'Y' ) === - 1 ) {
  
  						_tempVector2.y = 1;
  
  					}
  
  					if ( axis.search( 'Z' ) === - 1 ) {
  
  						_tempVector2.z = 1;
  
  					}
  
  				} // Apply scale
  
  
  				object.scale.copy( this._scaleStart ).multiply( _tempVector2 );
  
  				if ( this.scaleSnap ) {
  
  					if ( axis.search( 'X' ) !== - 1 ) {
  
  						object.scale.x = Math.round( object.scale.x / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;
  
  					}
  
  					if ( axis.search( 'Y' ) !== - 1 ) {
  
  						object.scale.y = Math.round( object.scale.y / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;
  
  					}
  
  					if ( axis.search( 'Z' ) !== - 1 ) {
  
  						object.scale.z = Math.round( object.scale.z / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;
  
  					}
  
  				}
  
  			} else if ( mode === 'rotate' ) {
  
  				this._offset.copy( this.pointEnd ).sub( this.pointStart );
  
  				const ROTATION_SPEED = 20 / this.worldPosition.distanceTo( _tempVector.setFromMatrixPosition( this.camera.matrixWorld ) );
  
  				if ( axis === 'E' ) {
  
  					this.rotationAxis.copy( this.eye );
  					this.rotationAngle = this.pointEnd.angleTo( this.pointStart );
  
  					this._startNorm.copy( this.pointStart ).normalize();
  
  					this._endNorm.copy( this.pointEnd ).normalize();
  
  					this.rotationAngle *= this._endNorm.cross( this._startNorm ).dot( this.eye ) < 0 ? 1 : - 1;
  
  				} else if ( axis === 'XYZE' ) {
  
  					this.rotationAxis.copy( this._offset ).cross( this.eye ).normalize();
  					this.rotationAngle = this._offset.dot( _tempVector.copy( this.rotationAxis ).cross( this.eye ) ) * ROTATION_SPEED;
  
  				} else if ( axis === 'X' || axis === 'Y' || axis === 'Z' ) {
  
  					this.rotationAxis.copy( _unit[ axis ] );
  
  					_tempVector.copy( _unit[ axis ] );
  
  					if ( space === 'local' ) {
  
  						_tempVector.applyQuaternion( this.worldQuaternion );
  
  					}
  
  					this.rotationAngle = this._offset.dot( _tempVector.cross( this.eye ).normalize() ) * ROTATION_SPEED;
  
  				} // Apply rotation snap
  
  
  				if ( this.rotationSnap ) this.rotationAngle = Math.round( this.rotationAngle / this.rotationSnap ) * this.rotationSnap; // Apply rotate
  
  				if ( space === 'local' && axis !== 'E' && axis !== 'XYZE' ) {
  
  					object.quaternion.copy( this._quaternionStart );
  					object.quaternion.multiply( _tempQuaternion.setFromAxisAngle( this.rotationAxis, this.rotationAngle ) ).normalize();
  
  				} else {
  
  					this.rotationAxis.applyQuaternion( this._parentQuaternionInv );
  					object.quaternion.copy( _tempQuaternion.setFromAxisAngle( this.rotationAxis, this.rotationAngle ) );
  					object.quaternion.multiply( this._quaternionStart ).normalize();
  
  				}
  
  			}
  
  			this.dispatchEvent( _changeEvent );
  			this.dispatchEvent( _objectChangeEvent );
  
  		}
  
  		pointerUp( pointer ) {
  
  			if ( pointer.button !== 0 ) return;
  
  			if ( this.dragging && this.axis !== null ) {
  
  				_mouseUpEvent.mode = this.mode;
  				this.dispatchEvent( _mouseUpEvent );
  
  			}
  
  			this.dragging = false;
  			this.axis = null;
  
  		}
  
  		dispose() {
  
  			this.domElement.removeEventListener( 'pointerdown', this._onPointerDown );
  			this.domElement.removeEventListener( 'pointermove', this._onPointerHover );
  			this.domElement.removeEventListener( 'pointermove', this._onPointerMove );
  			this.domElement.removeEventListener( 'pointerup', this._onPointerUp );
  			this.traverse( function ( child ) {
  
  				if ( child.geometry ) child.geometry.dispose();
  				if ( child.material ) child.material.dispose();
  
  			} );
  
  		} // Set current object
  
  
  		attach( object ) {
  
  			this.object = object;
  			this.visible = true;
  			return this;
  
  		} // Detatch from object
  
  
  		detach() {
  
  			this.object = undefined;
  			this.visible = false;
  			this.axis = null;
  			return this;
  
  		}
  
  		getRaycaster() {
  
  			return _raycaster;
  
  		} // TODO: deprecate
  
  
  		getMode() {
  
  			return this.mode;
  
  		}
  
  		setMode( mode ) {
  
  			this.mode = mode;
  
  		}
  
  		setTranslationSnap( translationSnap ) {
  
  			this.translationSnap = translationSnap;
  
  		}
  
  		setRotationSnap( rotationSnap ) {
  
  			this.rotationSnap = rotationSnap;
  
  		}
  
  		setScaleSnap( scaleSnap ) {
  
  			this.scaleSnap = scaleSnap;
  
  		}
  
  		setSize( size ) {
  
  			this.size = size;
  
  		}
  
  		setSpace( space ) {
  
  			this.space = space;
  
  		}
  
  		update() {
  
  			console.warn( 'THREE.TransformControls: update function has no more functionality and therefore has been deprecated.' );
  
  		}
  
  	}
  
  	TransformControls.prototype.isTransformControls = true; // mouse / touch event handlers
  
  	function getPointer( event ) {
  
  		if ( this.domElement.ownerDocument.pointerLockElement ) {
  
  			return {
  				x: 0,
  				y: 0,
  				button: event.button
  			};
  
  		} else {
  
  			const rect = this.domElement.getBoundingClientRect();
  			return {
  				x: ( event.clientX - rect.left ) / rect.width * 2 - 1,
  				y: - ( event.clientY - rect.top ) / rect.height * 2 + 1,
  				button: event.button
  			};
  
  		}
  
  	}
  
  	function onPointerHover( event ) {
  
  		if ( ! this.enabled ) return;
  
  		switch ( event.pointerType ) {
  
  			case 'mouse':
  			case 'pen':
  				this.pointerHover( this._getPointer( event ) );
  				break;
  
  		}
  
  	}
  
  	function onPointerDown( event ) {
  
  		if ( ! this.enabled ) return;
  		this.domElement.setPointerCapture( event.pointerId );
  		this.domElement.addEventListener( 'pointermove', this._onPointerMove );
  		this.pointerHover( this._getPointer( event ) );
  		this.pointerDown( this._getPointer( event ) );
  
  	}
  
  	function onPointerMove( event ) {
  
  		if ( ! this.enabled ) return;
  		this.pointerMove( this._getPointer( event ) );
  
  	}
  
  	function onPointerUp( event ) {
  
  		if ( ! this.enabled ) return;
  		this.domElement.releasePointerCapture( event.pointerId );
  		this.domElement.removeEventListener( 'pointermove', this._onPointerMove );
  		this.pointerUp( this._getPointer( event ) );
  
  	}
  
  	function intersectObjectWithRay( object, raycaster, includeInvisible ) {
  
  		const allIntersections = raycaster.intersectObject( object, true );
  
  		for ( let i = 0; i < allIntersections.length; i ++ ) {
  
  			if ( allIntersections[ i ].object.visible || includeInvisible ) {
  
  				return allIntersections[ i ];
  
  			}
  
  		}
  
  		return false;
  
  	} //
  	// Reusable utility variables
  
  
  	const _tempEuler = new THREE.Euler();
  
  	const _alignVector = new THREE.Vector3( 0, 1, 0 );
  
  	const _zeroVector = new THREE.Vector3( 0, 0, 0 );
  
  	const _lookAtMatrix = new THREE.Matrix4();
  
  	const _tempQuaternion2 = new THREE.Quaternion();
  
  	const _identityQuaternion = new THREE.Quaternion();
  
  	const _dirVector = new THREE.Vector3();
  
  	const _tempMatrix = new THREE.Matrix4();
  
  	const _unitX = new THREE.Vector3( 1, 0, 0 );
  
  	const _unitY = new THREE.Vector3( 0, 1, 0 );
  
  	const _unitZ = new THREE.Vector3( 0, 0, 1 );
  
  	const _v1 = new THREE.Vector3();
  
  	const _v2 = new THREE.Vector3();
  
  	const _v3 = new THREE.Vector3();
  
  	class TransformControlsGizmo extends THREE.Object3D {
  
  		constructor() {
  
  			super();
  			this.type = 'TransformControlsGizmo'; // shared materials
  
  			const gizmoMaterial = new THREE.MeshBasicMaterial( {
  				depthTest: false,
  				depthWrite: false,
  				fog: false,
  				toneMapped: false,
  				transparent: true
  			} );
  			const gizmoLineMaterial = new THREE.LineBasicMaterial( {
  				depthTest: false,
  				depthWrite: false,
  				fog: false,
  				toneMapped: false,
  				transparent: true
  			} ); // Make unique material for each axis/color
  
  			const matInvisible = gizmoMaterial.clone();
  			matInvisible.opacity = 0.15;
  			const matHelper = gizmoLineMaterial.clone();
  			matHelper.opacity = 0.5;
  			const matRed = gizmoMaterial.clone();
  			matRed.color.setHex( 0xff0000 );
  			const matGreen = gizmoMaterial.clone();
  			matGreen.color.setHex( 0x00ff00 );
  			const matBlue = gizmoMaterial.clone();
  			matBlue.color.setHex( 0x0000ff );
  			const matRedTransparent = gizmoMaterial.clone();
  			matRedTransparent.color.setHex( 0xff0000 );
  			matRedTransparent.opacity = 0.5;
  			const matGreenTransparent = gizmoMaterial.clone();
  			matGreenTransparent.color.setHex( 0x00ff00 );
  			matGreenTransparent.opacity = 0.5;
  			const matBlueTransparent = gizmoMaterial.clone();
  			matBlueTransparent.color.setHex( 0x0000ff );
  			matBlueTransparent.opacity = 0.5;
  			const matWhiteTransparent = gizmoMaterial.clone();
  			matWhiteTransparent.opacity = 0.25;
  			const matYellowTransparent = gizmoMaterial.clone();
  			matYellowTransparent.color.setHex( 0xffff00 );
  			matYellowTransparent.opacity = 0.25;
  			const matYellow = gizmoMaterial.clone();
  			matYellow.color.setHex( 0xffff00 );
  			const matGray = gizmoMaterial.clone();
  			matGray.color.setHex( 0x787878 ); // reusable geometry
  
  			const arrowGeometry = new THREE.CylinderGeometry( 0, 0.04, 0.1, 12 );
  			arrowGeometry.translate( 0, 0.05, 0 );
  			const scaleHandleGeometry = new THREE.BoxGeometry( 0.08, 0.08, 0.08 );
  			scaleHandleGeometry.translate( 0, 0.04, 0 );
  			const lineGeometry = new THREE.BufferGeometry();
  			lineGeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0, 1, 0, 0 ], 3 ) );
  			const lineGeometry2 = new THREE.CylinderGeometry( 0.0075, 0.0075, 0.5, 3 );
  			lineGeometry2.translate( 0, 0.25, 0 );
  
  			function CircleGeometry( radius, arc ) {
  
  				const geometry = new THREE.TorusGeometry( radius, 0.0075, 3, 64, arc * Math.PI * 2 );
  				geometry.rotateY( Math.PI / 2 );
  				geometry.rotateX( Math.PI / 2 );
  				return geometry;
  
  			} // Special geometry for transform helper. If scaled with position vector it spans from [0,0,0] to position
  
  
  			function TranslateHelperGeometry() {
  
  				const geometry = new THREE.BufferGeometry();
  				geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0, 1, 1, 1 ], 3 ) );
  				return geometry;
  
  			} // Gizmo definitions - custom hierarchy definitions for setupGizmo() function
  
  
  			const gizmoTranslate = {
  				X: [[ new THREE.Mesh( arrowGeometry, matRed ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( arrowGeometry, matRed ), [ - 0.5, 0, 0 ], [ 0, 0, Math.PI / 2 ]], [ new THREE.Mesh( lineGeometry2, matRed ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]],
  				Y: [[ new THREE.Mesh( arrowGeometry, matGreen ), [ 0, 0.5, 0 ]], [ new THREE.Mesh( arrowGeometry, matGreen ), [ 0, - 0.5, 0 ], [ Math.PI, 0, 0 ]], [ new THREE.Mesh( lineGeometry2, matGreen ) ]],
  				Z: [[ new THREE.Mesh( arrowGeometry, matBlue ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( arrowGeometry, matBlue ), [ 0, 0, - 0.5 ], [ - Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( lineGeometry2, matBlue ), null, [ Math.PI / 2, 0, 0 ]]],
  				XYZ: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.1, 0 ), matWhiteTransparent.clone() ), [ 0, 0, 0 ]]],
  				XY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matBlueTransparent.clone() ), [ 0.15, 0.15, 0 ]]],
  				YZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matRedTransparent.clone() ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]]],
  				XZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matGreenTransparent.clone() ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]]]
  			};
  			const pickerTranslate = {
  				X: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0.3, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ - 0.3, 0, 0 ], [ 0, 0, Math.PI / 2 ]]],
  				Y: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0.3, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, - 0.3, 0 ], [ 0, 0, Math.PI ]]],
  				Z: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0, 0.3 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0, - 0.3 ], [ - Math.PI / 2, 0, 0 ]]],
  				XYZ: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.2, 0 ), matInvisible ) ]],
  				XY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0.15, 0.15, 0 ]]],
  				YZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]]],
  				XZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]]]
  			};
  			const helperTranslate = {
  				START: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]],
  				END: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]],
  				DELTA: [[ new THREE.Line( TranslateHelperGeometry(), matHelper ), null, null, null, 'helper' ]],
  				X: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]],
  				Y: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]],
  				Z: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]]
  			};
  			const gizmoRotate = {
  				XYZE: [[ new THREE.Mesh( CircleGeometry( 0.5, 1 ), matGray ), null, [ 0, Math.PI / 2, 0 ]]],
  				X: [[ new THREE.Mesh( CircleGeometry( 0.5, 0.5 ), matRed ) ]],
  				Y: [[ new THREE.Mesh( CircleGeometry( 0.5, 0.5 ), matGreen ), null, [ 0, 0, - Math.PI / 2 ]]],
  				Z: [[ new THREE.Mesh( CircleGeometry( 0.5, 0.5 ), matBlue ), null, [ 0, Math.PI / 2, 0 ]]],
  				E: [[ new THREE.Mesh( CircleGeometry( 0.75, 1 ), matYellowTransparent ), null, [ 0, Math.PI / 2, 0 ]]]
  			};
  			const helperRotate = {
  				AXIS: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]]
  			};
  			const pickerRotate = {
  				XYZE: [[ new THREE.Mesh( new THREE.SphereGeometry( 0.25, 10, 8 ), matInvisible ) ]],
  				X: [[ new THREE.Mesh( new THREE.TorusGeometry( 0.5, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, - Math.PI / 2, - Math.PI / 2 ]]],
  				Y: [[ new THREE.Mesh( new THREE.TorusGeometry( 0.5, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ Math.PI / 2, 0, 0 ]]],
  				Z: [[ new THREE.Mesh( new THREE.TorusGeometry( 0.5, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]],
  				E: [[ new THREE.Mesh( new THREE.TorusGeometry( 0.75, 0.1, 2, 24 ), matInvisible ) ]]
  			};
  			const gizmoScale = {
  				X: [[ new THREE.Mesh( scaleHandleGeometry, matRed ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( lineGeometry2, matRed ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( scaleHandleGeometry, matRed ), [ - 0.5, 0, 0 ], [ 0, 0, Math.PI / 2 ]]],
  				Y: [[ new THREE.Mesh( scaleHandleGeometry, matGreen ), [ 0, 0.5, 0 ]], [ new THREE.Mesh( lineGeometry2, matGreen ) ], [ new THREE.Mesh( scaleHandleGeometry, matGreen ), [ 0, - 0.5, 0 ], [ 0, 0, Math.PI ]]],
  				Z: [[ new THREE.Mesh( scaleHandleGeometry, matBlue ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( lineGeometry2, matBlue ), [ 0, 0, 0 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( scaleHandleGeometry, matBlue ), [ 0, 0, - 0.5 ], [ - Math.PI / 2, 0, 0 ]]],
  				XY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matBlueTransparent ), [ 0.15, 0.15, 0 ]]],
  				YZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matRedTransparent ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]]],
  				XZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matGreenTransparent ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]]],
  				XYZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.1, 0.1, 0.1 ), matWhiteTransparent.clone() ) ]]
  			};
  			const pickerScale = {
  				X: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0.3, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ - 0.3, 0, 0 ], [ 0, 0, Math.PI / 2 ]]],
  				Y: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0.3, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, - 0.3, 0 ], [ 0, 0, Math.PI ]]],
  				Z: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0, 0.3 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0, - 0.3 ], [ - Math.PI / 2, 0, 0 ]]],
  				XY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0.15, 0.15, 0 ]]],
  				YZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]]],
  				XZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]]],
  				XYZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 0, 0, 0 ]]]
  			};
  			const helperScale = {
  				X: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]],
  				Y: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]],
  				Z: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]]
  			}; // Creates an THREE.Object3D with gizmos described in custom hierarchy definition.
  
  			function setupGizmo( gizmoMap ) {
  
  				const gizmo = new THREE.Object3D();
  
  				for ( const name in gizmoMap ) {
  
  					for ( let i = gizmoMap[ name ].length; i --; ) {
  
  						const object = gizmoMap[ name ][ i ][ 0 ].clone();
  						const position = gizmoMap[ name ][ i ][ 1 ];
  						const rotation = gizmoMap[ name ][ i ][ 2 ];
  						const scale = gizmoMap[ name ][ i ][ 3 ];
  						const tag = gizmoMap[ name ][ i ][ 4 ]; // name and tag properties are essential for picking and updating logic.
  
  						object.name = name;
  						object.tag = tag;
  
  						if ( position ) {
  
  							object.position.set( position[ 0 ], position[ 1 ], position[ 2 ] );
  
  						}
  
  						if ( rotation ) {
  
  							object.rotation.set( rotation[ 0 ], rotation[ 1 ], rotation[ 2 ] );
  
  						}
  
  						if ( scale ) {
  
  							object.scale.set( scale[ 0 ], scale[ 1 ], scale[ 2 ] );
  
  						}
  
  						object.updateMatrix();
  						const tempGeometry = object.geometry.clone();
  						tempGeometry.applyMatrix4( object.matrix );
  						object.geometry = tempGeometry;
  						object.renderOrder = Infinity;
  						object.position.set( 0, 0, 0 );
  						object.rotation.set( 0, 0, 0 );
  						object.scale.set( 1, 1, 1 );
  						gizmo.add( object );
  
  					}
  
  				}
  
  				return gizmo;
  
  			} // Gizmo creation
  
  
  			this.gizmo = {};
  			this.picker = {};
  			this.helper = {};
  			this.add( this.gizmo[ 'translate' ] = setupGizmo( gizmoTranslate ) );
  			this.add( this.gizmo[ 'rotate' ] = setupGizmo( gizmoRotate ) );
  			this.add( this.gizmo[ 'scale' ] = setupGizmo( gizmoScale ) );
  			this.add( this.picker[ 'translate' ] = setupGizmo( pickerTranslate ) );
  			this.add( this.picker[ 'rotate' ] = setupGizmo( pickerRotate ) );
  			this.add( this.picker[ 'scale' ] = setupGizmo( pickerScale ) );
  			this.add( this.helper[ 'translate' ] = setupGizmo( helperTranslate ) );
  			this.add( this.helper[ 'rotate' ] = setupGizmo( helperRotate ) );
  			this.add( this.helper[ 'scale' ] = setupGizmo( helperScale ) ); // Pickers should be hidden always
  
  			this.picker[ 'translate' ].visible = false;
  			this.picker[ 'rotate' ].visible = false;
  			this.picker[ 'scale' ].visible = false;
  
  		} // updateMatrixWorld will update transformations and appearance of individual handles
  
  
  		updateMatrixWorld( force ) {
  
  			const space = this.mode === 'scale' ? 'local' : this.space; // scale always oriented to local rotation
  
  			const quaternion = space === 'local' ? this.worldQuaternion : _identityQuaternion; // Show only gizmos for current transform mode
  
  			this.gizmo[ 'translate' ].visible = this.mode === 'translate';
  			this.gizmo[ 'rotate' ].visible = this.mode === 'rotate';
  			this.gizmo[ 'scale' ].visible = this.mode === 'scale';
  			this.helper[ 'translate' ].visible = this.mode === 'translate';
  			this.helper[ 'rotate' ].visible = this.mode === 'rotate';
  			this.helper[ 'scale' ].visible = this.mode === 'scale';
  			let handles = [];
  			handles = handles.concat( this.picker[ this.mode ].children );
  			handles = handles.concat( this.gizmo[ this.mode ].children );
  			handles = handles.concat( this.helper[ this.mode ].children );
  
  			for ( let i = 0; i < handles.length; i ++ ) {
  
  				const handle = handles[ i ]; // hide aligned to camera
  
  				handle.visible = true;
  				handle.rotation.set( 0, 0, 0 );
  				handle.position.copy( this.worldPosition );
  				let factor;
  
  				if ( this.camera.isOrthographicCamera ) {
  
  					factor = ( this.camera.top - this.camera.bottom ) / this.camera.zoom;
  
  				} else {
  
  					factor = this.worldPosition.distanceTo( this.cameraPosition ) * Math.min( 1.9 * Math.tan( Math.PI * this.camera.fov / 360 ) / this.camera.zoom, 7 );
  
  				}
  
  				handle.scale.set( 1, 1, 1 ).multiplyScalar( factor * this.size / 4 ); // TODO: simplify helpers and consider decoupling from gizmo
  
  				if ( handle.tag === 'helper' ) {
  
  					handle.visible = false;
  
  					if ( handle.name === 'AXIS' ) {
  
  						handle.position.copy( this.worldPositionStart );
  						handle.visible = !! this.axis;
  
  						if ( this.axis === 'X' ) {
  
  							_tempQuaternion.setFromEuler( _tempEuler.set( 0, 0, 0 ) );
  
  							handle.quaternion.copy( quaternion ).multiply( _tempQuaternion );
  
  							if ( Math.abs( _alignVector.copy( _unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {
  
  								handle.visible = false;
  
  							}
  
  						}
  
  						if ( this.axis === 'Y' ) {
  
  							_tempQuaternion.setFromEuler( _tempEuler.set( 0, 0, Math.PI / 2 ) );
  
  							handle.quaternion.copy( quaternion ).multiply( _tempQuaternion );
  
  							if ( Math.abs( _alignVector.copy( _unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {
  
  								handle.visible = false;
  
  							}
  
  						}
  
  						if ( this.axis === 'Z' ) {
  
  							_tempQuaternion.setFromEuler( _tempEuler.set( 0, Math.PI / 2, 0 ) );
  
  							handle.quaternion.copy( quaternion ).multiply( _tempQuaternion );
  
  							if ( Math.abs( _alignVector.copy( _unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {
  
  								handle.visible = false;
  
  							}
  
  						}
  
  						if ( this.axis === 'XYZE' ) {
  
  							_tempQuaternion.setFromEuler( _tempEuler.set( 0, Math.PI / 2, 0 ) );
  
  							_alignVector.copy( this.rotationAxis );
  
  							handle.quaternion.setFromRotationMatrix( _lookAtMatrix.lookAt( _zeroVector, _alignVector, _unitY ) );
  							handle.quaternion.multiply( _tempQuaternion );
  							handle.visible = this.dragging;
  
  						}
  
  						if ( this.axis === 'E' ) {
  
  							handle.visible = false;
  
  						}
  
  					} else if ( handle.name === 'START' ) {
  
  						handle.position.copy( this.worldPositionStart );
  						handle.visible = this.dragging;
  
  					} else if ( handle.name === 'END' ) {
  
  						handle.position.copy( this.worldPosition );
  						handle.visible = this.dragging;
  
  					} else if ( handle.name === 'DELTA' ) {
  
  						handle.position.copy( this.worldPositionStart );
  						handle.quaternion.copy( this.worldQuaternionStart );
  
  						_tempVector.set( 1e-10, 1e-10, 1e-10 ).add( this.worldPositionStart ).sub( this.worldPosition ).multiplyScalar( - 1 );
  
  						_tempVector.applyQuaternion( this.worldQuaternionStart.clone().invert() );
  
  						handle.scale.copy( _tempVector );
  						handle.visible = this.dragging;
  
  					} else {
  
  						handle.quaternion.copy( quaternion );
  
  						if ( this.dragging ) {
  
  							handle.position.copy( this.worldPositionStart );
  
  						} else {
  
  							handle.position.copy( this.worldPosition );
  
  						}
  
  						if ( this.axis ) {
  
  							handle.visible = this.axis.search( handle.name ) !== - 1;
  
  						}
  
  					} // If updating helper, skip rest of the loop
  
  
  					continue;
  
  				} // Align handles to current local or world rotation
  
  
  				handle.quaternion.copy( quaternion );
  
  				if ( this.mode === 'translate' || this.mode === 'scale' ) {
  
  					// Hide translate and scale axis facing the camera
  					const AXIS_HIDE_TRESHOLD = 0.99;
  					const PLANE_HIDE_TRESHOLD = 0.2;
  
  					if ( handle.name === 'X' ) {
  
  						if ( Math.abs( _alignVector.copy( _unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {
  
  							handle.scale.set( 1e-10, 1e-10, 1e-10 );
  							handle.visible = false;
  
  						}
  
  					}
  
  					if ( handle.name === 'Y' ) {
  
  						if ( Math.abs( _alignVector.copy( _unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {
  
  							handle.scale.set( 1e-10, 1e-10, 1e-10 );
  							handle.visible = false;
  
  						}
  
  					}
  
  					if ( handle.name === 'Z' ) {
  
  						if ( Math.abs( _alignVector.copy( _unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {
  
  							handle.scale.set( 1e-10, 1e-10, 1e-10 );
  							handle.visible = false;
  
  						}
  
  					}
  
  					if ( handle.name === 'XY' ) {
  
  						if ( Math.abs( _alignVector.copy( _unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {
  
  							handle.scale.set( 1e-10, 1e-10, 1e-10 );
  							handle.visible = false;
  
  						}
  
  					}
  
  					if ( handle.name === 'YZ' ) {
  
  						if ( Math.abs( _alignVector.copy( _unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {
  
  							handle.scale.set( 1e-10, 1e-10, 1e-10 );
  							handle.visible = false;
  
  						}
  
  					}
  
  					if ( handle.name === 'XZ' ) {
  
  						if ( Math.abs( _alignVector.copy( _unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {
  
  							handle.scale.set( 1e-10, 1e-10, 1e-10 );
  							handle.visible = false;
  
  						}
  
  					}
  
  				} else if ( this.mode === 'rotate' ) {
  
  					// Align handles to current local or world rotation
  					_tempQuaternion2.copy( quaternion );
  
  					_alignVector.copy( this.eye ).applyQuaternion( _tempQuaternion.copy( quaternion ).invert() );
  
  					if ( handle.name.search( 'E' ) !== - 1 ) {
  
  						handle.quaternion.setFromRotationMatrix( _lookAtMatrix.lookAt( this.eye, _zeroVector, _unitY ) );
  
  					}
  
  					if ( handle.name === 'X' ) {
  
  						_tempQuaternion.setFromAxisAngle( _unitX, Math.atan2( - _alignVector.y, _alignVector.z ) );
  
  						_tempQuaternion.multiplyQuaternions( _tempQuaternion2, _tempQuaternion );
  
  						handle.quaternion.copy( _tempQuaternion );
  
  					}
  
  					if ( handle.name === 'Y' ) {
  
  						_tempQuaternion.setFromAxisAngle( _unitY, Math.atan2( _alignVector.x, _alignVector.z ) );
  
  						_tempQuaternion.multiplyQuaternions( _tempQuaternion2, _tempQuaternion );
  
  						handle.quaternion.copy( _tempQuaternion );
  
  					}
  
  					if ( handle.name === 'Z' ) {
  
  						_tempQuaternion.setFromAxisAngle( _unitZ, Math.atan2( _alignVector.y, _alignVector.x ) );
  
  						_tempQuaternion.multiplyQuaternions( _tempQuaternion2, _tempQuaternion );
  
  						handle.quaternion.copy( _tempQuaternion );
  
  					}
  
  				} // Hide disabled axes
  
  
  				handle.visible = handle.visible && ( handle.name.indexOf( 'X' ) === - 1 || this.showX );
  				handle.visible = handle.visible && ( handle.name.indexOf( 'Y' ) === - 1 || this.showY );
  				handle.visible = handle.visible && ( handle.name.indexOf( 'Z' ) === - 1 || this.showZ );
  				handle.visible = handle.visible && ( handle.name.indexOf( 'E' ) === - 1 || this.showX && this.showY && this.showZ ); // highlight selected axis
  
  				handle.material._color = handle.material._color || handle.material.color.clone();
  				handle.material._opacity = handle.material._opacity || handle.material.opacity;
  				handle.material.color.copy( handle.material._color );
  				handle.material.opacity = handle.material._opacity;
  
  				if ( this.enabled && this.axis ) {
  
  					if ( handle.name === this.axis ) {
  
  						handle.material.color.setHex( 0xffff00 );
  						handle.material.opacity = 1.0;
  
  					} else if ( this.axis.split( '' ).some( function ( a ) {
  
  						return handle.name === a;
  
  					} ) ) {
  
  						handle.material.color.setHex( 0xffff00 );
  						handle.material.opacity = 1.0;
  
  					}
  
  				}
  
  			}
  
  			super.updateMatrixWorld( force );
  
  		}
  
  	}
  
  	TransformControlsGizmo.prototype.isTransformControlsGizmo = true; //
  
  	class TransformControlsPlane extends THREE.Mesh {
  
  		constructor() {
  
  			super( new THREE.PlaneGeometry( 100000, 100000, 2, 2 ), new THREE.MeshBasicMaterial( {
  				visible: false,
  				wireframe: true,
  				side: THREE.DoubleSide,
  				transparent: true,
  				opacity: 0.1,
  				toneMapped: false
  			} ) );
  			this.type = 'TransformControlsPlane';
  
  		}
  
  		updateMatrixWorld( force ) {
  
  			let space = this.space;
  			this.position.copy( this.worldPosition );
  			if ( this.mode === 'scale' ) space = 'local'; // scale always oriented to local rotation
  
  			_v1.copy( _unitX ).applyQuaternion( space === 'local' ? this.worldQuaternion : _identityQuaternion );
  
  			_v2.copy( _unitY ).applyQuaternion( space === 'local' ? this.worldQuaternion : _identityQuaternion );
  
  			_v3.copy( _unitZ ).applyQuaternion( space === 'local' ? this.worldQuaternion : _identityQuaternion ); // Align the plane for current transform mode, axis and space.
  
  
  			_alignVector.copy( _v2 );
  
  			switch ( this.mode ) {
  
  				case 'translate':
  				case 'scale':
  					switch ( this.axis ) {
  
  						case 'X':
  							_alignVector.copy( this.eye ).cross( _v1 );
  
  							_dirVector.copy( _v1 ).cross( _alignVector );
  
  							break;
  
  						case 'Y':
  							_alignVector.copy( this.eye ).cross( _v2 );
  
  							_dirVector.copy( _v2 ).cross( _alignVector );
  
  							break;
  
  						case 'Z':
  							_alignVector.copy( this.eye ).cross( _v3 );
  
  							_dirVector.copy( _v3 ).cross( _alignVector );
  
  							break;
  
  						case 'XY':
  							_dirVector.copy( _v3 );
  
  							break;
  
  						case 'YZ':
  							_dirVector.copy( _v1 );
  
  							break;
  
  						case 'XZ':
  							_alignVector.copy( _v3 );
  
  							_dirVector.copy( _v2 );
  
  							break;
  
  						case 'XYZ':
  						case 'E':
  							_dirVector.set( 0, 0, 0 );
  
  							break;
  
  					}
  
  					break;
  
  				case 'rotate':
  				default:
  					// special case for rotate
  					_dirVector.set( 0, 0, 0 );
  
  			}
  
  			if ( _dirVector.length() === 0 ) {
  
  				// If in rotate mode, make the plane parallel to camera
  				this.quaternion.copy( this.cameraQuaternion );
  
  			} else {
  
  				_tempMatrix.lookAt( _tempVector.set( 0, 0, 0 ), _dirVector, _alignVector );
  
  				this.quaternion.setFromRotationMatrix( _tempMatrix );
  
  			}
  
  			super.updateMatrixWorld( force );
  
  		}
  
  	}
  
  	TransformControlsPlane.prototype.isTransformControlsPlane = true;
  
  	THREE.TransformControls = TransformControls;
  	THREE.TransformControlsGizmo = TransformControlsGizmo;
  	THREE.TransformControlsPlane = TransformControlsPlane;
  
  } )();
  