最新代码

public/sdk/three/jsm/controls/DragControls.js

@@ -0,0 +1,282 @@
+import {
+	EventDispatcher,
+	Matrix4,
+	Plane,
+	Raycaster,
+	Vector2,
+	Vector3
+} from 'three';
+
+const _plane = new Plane();
+const _raycaster = new Raycaster();
+
+const _pointer = new Vector2();
+const _offset = new Vector3();
+const _diff = new Vector2();
+const _previousPointer = new Vector2();
+const _intersection = new Vector3();
+const _worldPosition = new Vector3();
+const _inverseMatrix = new Matrix4();
+
+const _up = new Vector3();
+const _right = new Vector3();
+
+class DragControls extends EventDispatcher {
+
+	constructor( _objects, _camera, _domElement ) {
+
+		super();
+
+		_domElement.style.touchAction = 'none'; // disable touch scroll
+
+		let _selected = null, _hovered = null;
+
+		const _intersections = [];
+
+		this.mode = 'translate';
+
+		this.rotateSpeed = 1;
+
+		//
+
+		const scope = this;
+
+		function activate() {
+
+			_domElement.addEventListener( 'pointermove', onPointerMove );
+			_domElement.addEventListener( 'pointerdown', onPointerDown );
+			_domElement.addEventListener( 'pointerup', onPointerCancel );
+			_domElement.addEventListener( 'pointerleave', onPointerCancel );
+
+		}
+
+		function deactivate() {
+
+			_domElement.removeEventListener( 'pointermove', onPointerMove );
+			_domElement.removeEventListener( 'pointerdown', onPointerDown );
+			_domElement.removeEventListener( 'pointerup', onPointerCancel );
+			_domElement.removeEventListener( 'pointerleave', onPointerCancel );
+
+			_domElement.style.cursor = '';
+
+		}
+
+		function dispose() {
+
+			deactivate();
+
+		}
+
+		function getObjects() {
+
+			return _objects;
+
+		}
+
+		function setObjects( objects ) {
+
+			_objects = objects;
+
+		}
+
+		function getRaycaster() {
+
+			return _raycaster;
+
+		}
+
+		function onPointerMove( event ) {
+
+			if ( scope.enabled === false ) return;
+
+			updatePointer( event );
+
+			_raycaster.setFromCamera( _pointer, _camera );
+
+			if ( _selected ) {
+
+				if ( scope.mode === 'translate' ) {
+
+					if ( _raycaster.ray.intersectPlane( _plane, _intersection ) ) {
+
+						_selected.position.copy( _intersection.sub( _offset ).applyMatrix4( _inverseMatrix ) );
+
+					}
+
+				} else if ( scope.mode === 'rotate' ) {
+
+					_diff.subVectors( _pointer, _previousPointer ).multiplyScalar( scope.rotateSpeed );
+					_selected.rotateOnWorldAxis( _up, _diff.x );
+					_selected.rotateOnWorldAxis( _right.normalize(), - _diff.y );
+
+				}
+
+				scope.dispatchEvent( { type: 'drag', object: _selected } );
+
+				_previousPointer.copy( _pointer );
+
+			} else {
+
+				// hover support
+
+				if ( event.pointerType === 'mouse' || event.pointerType === 'pen' ) {
+
+					_intersections.length = 0;
+
+					_raycaster.setFromCamera( _pointer, _camera );
+					_raycaster.intersectObjects( _objects, scope.recursive, _intersections );
+
+					if ( _intersections.length > 0 ) {
+
+						const object = _intersections[ 0 ].object;
+
+						_plane.setFromNormalAndCoplanarPoint( _camera.getWorldDirection( _plane.normal ), _worldPosition.setFromMatrixPosition( object.matrixWorld ) );
+
+						if ( _hovered !== object && _hovered !== null ) {
+
+							scope.dispatchEvent( { type: 'hoveroff', object: _hovered } );
+
+							_domElement.style.cursor = 'auto';
+							_hovered = null;
+
+						}
+
+						if ( _hovered !== object ) {
+
+							scope.dispatchEvent( { type: 'hoveron', object: object } );
+
+							_domElement.style.cursor = 'pointer';
+							_hovered = object;
+
+						}
+
+					} else {
+
+						if ( _hovered !== null ) {
+
+							scope.dispatchEvent( { type: 'hoveroff', object: _hovered } );
+
+							_domElement.style.cursor = 'auto';
+							_hovered = null;
+
+						}
+
+					}
+
+				}
+
+			}
+
+			_previousPointer.copy( _pointer );
+
+		}
+
+		function onPointerDown( event ) {
+
+			if ( scope.enabled === false ) return;
+
+			updatePointer( event );
+
+			_intersections.length = 0;
+
+			_raycaster.setFromCamera( _pointer, _camera );
+			_raycaster.intersectObjects( _objects, scope.recursive, _intersections );
+
+			if ( _intersections.length > 0 ) {
+
+				if ( scope.transformGroup === true ) {
+
+					// look for the outermost group in the object's upper hierarchy
+
+					_selected = findGroup( _intersections[ 0 ].object );
+
+				} else {
+
+					_selected = _intersections[ 0 ].object;
+
+				}
+
+				_plane.setFromNormalAndCoplanarPoint( _camera.getWorldDirection( _plane.normal ), _worldPosition.setFromMatrixPosition( _selected.matrixWorld ) );
+
+				if ( _raycaster.ray.intersectPlane( _plane, _intersection ) ) {
+
+					if ( scope.mode === 'translate' ) {
+
+						_inverseMatrix.copy( _selected.parent.matrixWorld ).invert();
+						_offset.copy( _intersection ).sub( _worldPosition.setFromMatrixPosition( _selected.matrixWorld ) );
+
+					} else if ( scope.mode === 'rotate' ) {
+
+						// the controls only support Y+ up
+						_up.set( 0, 1, 0 ).applyQuaternion( _camera.quaternion ).normalize();
+						_right.set( 1, 0, 0 ).applyQuaternion( _camera.quaternion ).normalize();
+
+					}
+
+				}
+
+				_domElement.style.cursor = 'move';
+
+				scope.dispatchEvent( { type: 'dragstart', object: _selected } );
+
+			}
+
+			_previousPointer.copy( _pointer );
+
+		}
+
+		function onPointerCancel() {
+
+			if ( scope.enabled === false ) return;
+
+			if ( _selected ) {
+
+				scope.dispatchEvent( { type: 'dragend', object: _selected } );
+
+				_selected = null;
+
+			}
+
+			_domElement.style.cursor = _hovered ? 'pointer' : 'auto';
+
+		}
+
+		function updatePointer( event ) {
+
+			const rect = _domElement.getBoundingClientRect();
+
+			_pointer.x = ( event.clientX - rect.left ) / rect.width * 2 - 1;
+			_pointer.y = - ( event.clientY - rect.top ) / rect.height * 2 + 1;
+
+		}
+
+		function findGroup( obj, group = null ) {
+
+			if ( obj.isGroup ) group = obj;
+
+			if ( obj.parent === null ) return group;
+
+			return findGroup( obj.parent, group );
+
+		}
+
+		activate();
+
+		// API
+
+		this.enabled = true;
+		this.recursive = true;
+		this.transformGroup = false;
+
+		this.activate = activate;
+		this.deactivate = deactivate;
+		this.dispose = dispose;
+		this.getObjects = getObjects;
+		this.getRaycaster = getRaycaster;
+		this.setObjects = setObjects;
+
+	}
+
+}
+
+export { DragControls };

public/sdk/three/jsm/controls/FirstPersonControls.js

@@ -0,0 +1,325 @@
+import {
+	MathUtils,
+	Spherical,
+	Vector3
+} from 'three';
+
+const _lookDirection = new Vector3();
+const _spherical = new Spherical();
+const _target = new Vector3();
+
+class FirstPersonControls {
+
+	constructor( object, domElement ) {
+
+		this.object = object;
+		this.domElement = domElement;
+
+		// API
+
+		this.enabled = true;
+
+		this.movementSpeed = 1.0;
+		this.lookSpeed = 0.005;
+
+		this.lookVertical = true;
+		this.autoForward = false;
+
+		this.activeLook = true;
+
+		this.heightSpeed = false;
+		this.heightCoef = 1.0;
+		this.heightMin = 0.0;
+		this.heightMax = 1.0;
+
+		this.constrainVertical = false;
+		this.verticalMin = 0;
+		this.verticalMax = Math.PI;
+
+		this.mouseDragOn = false;
+
+		// internals
+
+		this.autoSpeedFactor = 0.0;
+
+		this.pointerX = 0;
+		this.pointerY = 0;
+
+		this.moveForward = false;
+		this.moveBackward = false;
+		this.moveLeft = false;
+		this.moveRight = false;
+
+		this.viewHalfX = 0;
+		this.viewHalfY = 0;
+
+		// private variables
+
+		let lat = 0;
+		let lon = 0;
+
+		//
+
+		this.handleResize = function () {
+
+			if ( this.domElement === document ) {
+
+				this.viewHalfX = window.innerWidth / 2;
+				this.viewHalfY = window.innerHeight / 2;
+
+			} else {
+
+				this.viewHalfX = this.domElement.offsetWidth / 2;
+				this.viewHalfY = this.domElement.offsetHeight / 2;
+
+			}
+
+		};
+
+		this.onPointerDown = function ( event ) {
+
+			if ( this.domElement !== document ) {
+
+				this.domElement.focus();
+
+			}
+
+			if ( this.activeLook ) {
+
+				switch ( event.button ) {
+
+					case 0: this.moveForward = true; break;
+					case 2: this.moveBackward = true; break;
+
+				}
+
+			}
+
+			this.mouseDragOn = true;
+
+		};
+
+		this.onPointerUp = function ( event ) {
+
+			if ( this.activeLook ) {
+
+				switch ( event.button ) {
+
+					case 0: this.moveForward = false; break;
+					case 2: this.moveBackward = false; break;
+
+				}
+
+			}
+
+			this.mouseDragOn = false;
+
+		};
+
+		this.onPointerMove = function ( event ) {
+
+			if ( this.domElement === document ) {
+
+				this.pointerX = event.pageX - this.viewHalfX;
+				this.pointerY = event.pageY - this.viewHalfY;
+
+			} else {
+
+				this.pointerX = event.pageX - this.domElement.offsetLeft - this.viewHalfX;
+				this.pointerY = event.pageY - this.domElement.offsetTop - this.viewHalfY;
+
+			}
+
+		};
+
+		this.onKeyDown = function ( event ) {
+
+			switch ( event.code ) {
+
+				case 'ArrowUp':
+				case 'KeyW': this.moveForward = true; break;
+
+				case 'ArrowLeft':
+				case 'KeyA': this.moveLeft = true; break;
+
+				case 'ArrowDown':
+				case 'KeyS': this.moveBackward = true; break;
+
+				case 'ArrowRight':
+				case 'KeyD': this.moveRight = true; break;
+
+				case 'KeyR': this.moveUp = true; break;
+				case 'KeyF': this.moveDown = true; break;
+
+			}
+
+		};
+
+		this.onKeyUp = function ( event ) {
+
+			switch ( event.code ) {
+
+				case 'ArrowUp':
+				case 'KeyW': this.moveForward = false; break;
+
+				case 'ArrowLeft':
+				case 'KeyA': this.moveLeft = false; break;
+
+				case 'ArrowDown':
+				case 'KeyS': this.moveBackward = false; break;
+
+				case 'ArrowRight':
+				case 'KeyD': this.moveRight = false; break;
+
+				case 'KeyR': this.moveUp = false; break;
+				case 'KeyF': this.moveDown = false; break;
+
+			}
+
+		};
+
+		this.lookAt = function ( x, y, z ) {
+
+			if ( x.isVector3 ) {
+
+				_target.copy( x );
+
+			} else {
+
+				_target.set( x, y, z );
+
+			}
+
+			this.object.lookAt( _target );
+
+			setOrientation( this );
+
+			return this;
+
+		};
+
+		this.update = function () {
+
+			const targetPosition = new Vector3();
+
+			return function update( delta ) {
+
+				if ( this.enabled === false ) return;
+
+				if ( this.heightSpeed ) {
+
+					const y = MathUtils.clamp( this.object.position.y, this.heightMin, this.heightMax );
+					const heightDelta = y - this.heightMin;
+
+					this.autoSpeedFactor = delta * ( heightDelta * this.heightCoef );
+
+				} else {
+
+					this.autoSpeedFactor = 0.0;
+
+				}
+
+				const actualMoveSpeed = delta * this.movementSpeed;
+
+				if ( this.moveForward || ( this.autoForward && ! this.moveBackward ) ) this.object.translateZ( - ( actualMoveSpeed + this.autoSpeedFactor ) );
+				if ( this.moveBackward ) this.object.translateZ( actualMoveSpeed );
+
+				if ( this.moveLeft ) this.object.translateX( - actualMoveSpeed );
+				if ( this.moveRight ) this.object.translateX( actualMoveSpeed );
+
+				if ( this.moveUp ) this.object.translateY( actualMoveSpeed );
+				if ( this.moveDown ) this.object.translateY( - actualMoveSpeed );
+
+				let actualLookSpeed = delta * this.lookSpeed;
+
+				if ( ! this.activeLook ) {
+
+					actualLookSpeed = 0;
+
+				}
+
+				let verticalLookRatio = 1;
+
+				if ( this.constrainVertical ) {
+
+					verticalLookRatio = Math.PI / ( this.verticalMax - this.verticalMin );
+
+				}
+
+				lon -= this.pointerX * actualLookSpeed;
+				if ( this.lookVertical ) lat -= this.pointerY * actualLookSpeed * verticalLookRatio;
+
+				lat = Math.max( - 85, Math.min( 85, lat ) );
+
+				let phi = MathUtils.degToRad( 90 - lat );
+				const theta = MathUtils.degToRad( lon );
+
+				if ( this.constrainVertical ) {
+
+					phi = MathUtils.mapLinear( phi, 0, Math.PI, this.verticalMin, this.verticalMax );
+
+				}
+
+				const position = this.object.position;
+
+				targetPosition.setFromSphericalCoords( 1, phi, theta ).add( position );
+
+				this.object.lookAt( targetPosition );
+
+			};
+
+		}();
+
+		this.dispose = function () {
+
+			this.domElement.removeEventListener( 'contextmenu', contextmenu );
+			this.domElement.removeEventListener( 'pointerdown', _onPointerDown );
+			this.domElement.removeEventListener( 'pointermove', _onPointerMove );
+			this.domElement.removeEventListener( 'pointerup', _onPointerUp );
+
+			window.removeEventListener( 'keydown', _onKeyDown );
+			window.removeEventListener( 'keyup', _onKeyUp );
+
+		};
+
+		const _onPointerMove = this.onPointerMove.bind( this );
+		const _onPointerDown = this.onPointerDown.bind( this );
+		const _onPointerUp = this.onPointerUp.bind( this );
+		const _onKeyDown = this.onKeyDown.bind( this );
+		const _onKeyUp = this.onKeyUp.bind( this );
+
+		this.domElement.addEventListener( 'contextmenu', contextmenu );
+		this.domElement.addEventListener( 'pointerdown', _onPointerDown );
+		this.domElement.addEventListener( 'pointermove', _onPointerMove );
+		this.domElement.addEventListener( 'pointerup', _onPointerUp );
+
+		window.addEventListener( 'keydown', _onKeyDown );
+		window.addEventListener( 'keyup', _onKeyUp );
+
+		function setOrientation( controls ) {
+
+			const quaternion = controls.object.quaternion;
+
+			_lookDirection.set( 0, 0, - 1 ).applyQuaternion( quaternion );
+			_spherical.setFromVector3( _lookDirection );
+
+			lat = 90 - MathUtils.radToDeg( _spherical.phi );
+			lon = MathUtils.radToDeg( _spherical.theta );
+
+		}
+
+		this.handleResize();
+
+		setOrientation( this );
+
+	}
+
+}
+
+function contextmenu( event ) {
+
+	event.preventDefault();
+
+}
+
+export { FirstPersonControls };

public/sdk/three/jsm/controls/FlyControls.js

@@ -0,0 +1,326 @@
+import {
+	EventDispatcher,
+	Quaternion,
+	Vector3
+} from 'three';
+
+const _changeEvent = { type: 'change' };
+
+class FlyControls extends EventDispatcher {
+
+	constructor( object, domElement ) {
+
+		super();
+
+		this.object = object;
+		this.domElement = domElement;
+
+		// API
+
+		// Set to false to disable this control
+		this.enabled = true;
+
+		this.movementSpeed = 1.0;
+		this.rollSpeed = 0.005;
+
+		this.dragToLook = false;
+		this.autoForward = false;
+
+		// disable default target object behavior
+
+		// internals
+
+		const scope = this;
+
+		const EPS = 0.000001;
+
+		const lastQuaternion = new Quaternion();
+		const lastPosition = new Vector3();
+
+		this.tmpQuaternion = new Quaternion();
+
+		this.status = 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 Vector3( 0, 0, 0 );
+		this.rotationVector = new Vector3( 0, 0, 0 );
+
+		this.keydown = function ( event ) {
+
+			if ( event.altKey || this.enabled === false ) {
+
+				return;
+
+			}
+
+			switch ( event.code ) {
+
+				case 'ShiftLeft':
+				case 'ShiftRight': this.movementSpeedMultiplier = .1; break;
+
+				case 'KeyW': this.moveState.forward = 1; break;
+				case 'KeyS': this.moveState.back = 1; break;
+
+				case 'KeyA': this.moveState.left = 1; break;
+				case 'KeyD': this.moveState.right = 1; break;
+
+				case 'KeyR': this.moveState.up = 1; break;
+				case 'KeyF': this.moveState.down = 1; break;
+
+				case 'ArrowUp': this.moveState.pitchUp = 1; break;
+				case 'ArrowDown': this.moveState.pitchDown = 1; break;
+
+				case 'ArrowLeft': this.moveState.yawLeft = 1; break;
+				case 'ArrowRight': this.moveState.yawRight = 1; break;
+
+				case 'KeyQ': this.moveState.rollLeft = 1; break;
+				case 'KeyE': this.moveState.rollRight = 1; break;
+
+			}
+
+			this.updateMovementVector();
+			this.updateRotationVector();
+
+		};
+
+		this.keyup = function ( event ) {
+
+			if ( this.enabled === false ) return;
+
+			switch ( event.code ) {
+
+				case 'ShiftLeft':
+				case 'ShiftRight': this.movementSpeedMultiplier = 1; break;
+
+				case 'KeyW': this.moveState.forward = 0; break;
+				case 'KeyS': this.moveState.back = 0; break;
+
+				case 'KeyA': this.moveState.left = 0; break;
+				case 'KeyD': this.moveState.right = 0; break;
+
+				case 'KeyR': this.moveState.up = 0; break;
+				case 'KeyF': this.moveState.down = 0; break;
+
+				case 'ArrowUp': this.moveState.pitchUp = 0; break;
+				case 'ArrowDown': this.moveState.pitchDown = 0; break;
+
+				case 'ArrowLeft': this.moveState.yawLeft = 0; break;
+				case 'ArrowRight': this.moveState.yawRight = 0; break;
+
+				case 'KeyQ': this.moveState.rollLeft = 0; break;
+				case 'KeyE': this.moveState.rollRight = 0; break;
+
+			}
+
+			this.updateMovementVector();
+			this.updateRotationVector();
+
+		};
+
+		this.pointerdown = function ( event ) {
+
+			if ( this.enabled === false ) return;
+
+			if ( this.dragToLook ) {
+
+				this.status ++;
+
+			} else {
+
+				switch ( event.button ) {
+
+					case 0: this.moveState.forward = 1; break;
+					case 2: this.moveState.back = 1; break;
+
+				}
+
+				this.updateMovementVector();
+
+			}
+
+		};
+
+		this.pointermove = function ( event ) {
+
+			if ( this.enabled === false ) return;
+
+			if ( ! this.dragToLook || this.status > 0 ) {
+
+				const container = this.getContainerDimensions();
+				const halfWidth = container.size[ 0 ] / 2;
+				const 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.pointerup = function ( event ) {
+
+			if ( this.enabled === false ) return;
+
+			if ( this.dragToLook ) {
+
+				this.status --;
+
+				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.pointercancel = function () {
+
+			if ( this.enabled === false ) return;
+
+			if ( this.dragToLook ) {
+
+				this.status = 0;
+
+				this.moveState.yawLeft = this.moveState.pitchDown = 0;
+
+			} else {
+
+				this.moveState.forward = 0;
+				this.moveState.back = 0;
+
+				this.updateMovementVector();
+
+			}
+
+			this.updateRotationVector();
+
+		};
+
+		this.contextMenu = function ( event ) {
+
+			if ( this.enabled === false ) return;
+
+			event.preventDefault();
+
+		};
+
+		this.update = function ( delta ) {
+
+			if ( this.enabled === false ) return;
+
+			const moveMult = delta * scope.movementSpeed;
+			const rotMult = delta * scope.rollSpeed;
+
+			scope.object.translateX( scope.moveVector.x * moveMult );
+			scope.object.translateY( scope.moveVector.y * moveMult );
+			scope.object.translateZ( scope.moveVector.z * moveMult );
+
+			scope.tmpQuaternion.set( scope.rotationVector.x * rotMult, scope.rotationVector.y * rotMult, scope.rotationVector.z * rotMult, 1 ).normalize();
+			scope.object.quaternion.multiply( scope.tmpQuaternion );
+
+			if (
+				lastPosition.distanceToSquared( scope.object.position ) > EPS ||
+				8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS
+			) {
+
+				scope.dispatchEvent( _changeEvent );
+				lastQuaternion.copy( scope.object.quaternion );
+				lastPosition.copy( scope.object.position );
+
+			}
+
+		};
+
+		this.updateMovementVector = function () {
+
+			const 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 ]
+				};
+
+			}
+
+		};
+
+		this.dispose = function () {
+
+			this.domElement.removeEventListener( 'contextmenu', _contextmenu );
+			this.domElement.removeEventListener( 'pointerdown', _pointerdown );
+			this.domElement.removeEventListener( 'pointermove', _pointermove );
+			this.domElement.removeEventListener( 'pointerup', _pointerup );
+			this.domElement.removeEventListener( 'pointercancel', _pointercancel );
+
+			window.removeEventListener( 'keydown', _keydown );
+			window.removeEventListener( 'keyup', _keyup );
+
+		};
+
+		const _contextmenu = this.contextMenu.bind( this );
+		const _pointermove = this.pointermove.bind( this );
+		const _pointerdown = this.pointerdown.bind( this );
+		const _pointerup = this.pointerup.bind( this );
+		const _pointercancel = this.pointercancel.bind( this );
+		const _keydown = this.keydown.bind( this );
+		const _keyup = this.keyup.bind( this );
+
+		this.domElement.addEventListener( 'contextmenu', _contextmenu );
+		this.domElement.addEventListener( 'pointerdown', _pointerdown );
+		this.domElement.addEventListener( 'pointermove', _pointermove );
+		this.domElement.addEventListener( 'pointerup', _pointerup );
+		this.domElement.addEventListener( 'pointercancel', _pointercancel );
+
+		window.addEventListener( 'keydown', _keydown );
+		window.addEventListener( 'keyup', _keyup );
+
+		this.updateMovementVector();
+		this.updateRotationVector();
+
+	}
+
+}
+
+export { FlyControls };

public/sdk/three/jsm/controls/MapControls.js

@@ -0,0 +1,28 @@
+import { MOUSE, TOUCH } from 'three';
+
+import { OrbitControls } from './OrbitControls.js';
+
+// MapControls performs orbiting, dollying (zooming), and panning.
+// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
+//
+//    Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate
+//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
+//    Pan - left mouse, or arrow keys / touch: one-finger move
+
+class MapControls extends OrbitControls {
+
+	constructor( object, domElement ) {
+
+		super( object, domElement );
+
+		this.screenSpacePanning = false; // pan orthogonal to world-space direction camera.up
+
+		this.mouseButtons = { LEFT: MOUSE.PAN, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.ROTATE };
+
+		this.touches = { ONE: TOUCH.PAN, TWO: TOUCH.DOLLY_ROTATE };
+
+	}
+
+}
+
+export { MapControls };

public/sdk/three/jsm/controls/PointerLockControls.js

@@ -0,0 +1,162 @@
+import {
+	Euler,
+	EventDispatcher,
+	Vector3
+} from 'three';
+
+const _euler = new Euler( 0, 0, 0, 'YXZ' );
+const _vector = new Vector3();
+
+const _changeEvent = { type: 'change' };
+const _lockEvent = { type: 'lock' };
+const _unlockEvent = { type: 'unlock' };
+
+const _PI_2 = Math.PI / 2;
+
+class PointerLockControls extends EventDispatcher {
+
+	constructor( camera, domElement ) {
+
+		super();
+
+		this.camera = camera;
+		this.domElement = domElement;
+
+		this.isLocked = false;
+
+		// Set to constrain the pitch of the camera
+		// Range is 0 to Math.PI radians
+		this.minPolarAngle = 0; // radians
+		this.maxPolarAngle = Math.PI; // radians
+
+		this.pointerSpeed = 1.0;
+
+		this._onMouseMove = onMouseMove.bind( this );
+		this._onPointerlockChange = onPointerlockChange.bind( this );
+		this._onPointerlockError = onPointerlockError.bind( this );
+
+		this.connect();
+
+	}
+
+	connect() {
+
+		this.domElement.ownerDocument.addEventListener( 'mousemove', this._onMouseMove );
+		this.domElement.ownerDocument.addEventListener( 'pointerlockchange', this._onPointerlockChange );
+		this.domElement.ownerDocument.addEventListener( 'pointerlockerror', this._onPointerlockError );
+
+	}
+
+	disconnect() {
+
+		this.domElement.ownerDocument.removeEventListener( 'mousemove', this._onMouseMove );
+		this.domElement.ownerDocument.removeEventListener( 'pointerlockchange', this._onPointerlockChange );
+		this.domElement.ownerDocument.removeEventListener( 'pointerlockerror', this._onPointerlockError );
+
+	}
+
+	dispose() {
+
+		this.disconnect();
+
+	}
+
+	getObject() { // retaining this method for backward compatibility
+
+		return this.camera;
+
+	}
+
+	getDirection( v ) {
+
+		return v.set( 0, 0, - 1 ).applyQuaternion( this.camera.quaternion );
+
+	}
+
+	moveForward( distance ) {
+
+		// move forward parallel to the xz-plane
+		// assumes camera.up is y-up
+
+		const camera = this.camera;
+
+		_vector.setFromMatrixColumn( camera.matrix, 0 );
+
+		_vector.crossVectors( camera.up, _vector );
+
+		camera.position.addScaledVector( _vector, distance );
+
+	}
+
+	moveRight( distance ) {
+
+		const camera = this.camera;
+
+		_vector.setFromMatrixColumn( camera.matrix, 0 );
+
+		camera.position.addScaledVector( _vector, distance );
+
+	}
+
+	lock() {
+
+		this.domElement.requestPointerLock();
+
+	}
+
+	unlock() {
+
+		this.domElement.ownerDocument.exitPointerLock();
+
+	}
+
+}
+
+// event listeners
+
+function onMouseMove( event ) {
+
+	if ( this.isLocked === false ) return;
+
+	const movementX = event.movementX || event.mozMovementX || event.webkitMovementX || 0;
+	const movementY = event.movementY || event.mozMovementY || event.webkitMovementY || 0;
+
+	const camera = this.camera;
+	_euler.setFromQuaternion( camera.quaternion );
+
+	_euler.y -= movementX * 0.002 * this.pointerSpeed;
+	_euler.x -= movementY * 0.002 * this.pointerSpeed;
+
+	_euler.x = Math.max( _PI_2 - this.maxPolarAngle, Math.min( _PI_2 - this.minPolarAngle, _euler.x ) );
+
+	camera.quaternion.setFromEuler( _euler );
+
+	this.dispatchEvent( _changeEvent );
+
+}
+
+function onPointerlockChange() {
+
+	if ( this.domElement.ownerDocument.pointerLockElement === this.domElement ) {
+
+		this.dispatchEvent( _lockEvent );
+
+		this.isLocked = true;
+
+	} else {
+
+		this.dispatchEvent( _unlockEvent );
+
+		this.isLocked = false;
+
+	}
+
+}
+
+function onPointerlockError() {
+
+	console.error( 'THREE.PointerLockControls: Unable to use Pointer Lock API' );
+
+}
+
+export { PointerLockControls };

public/sdk/three/jsm/controls/TrackballControls.js

@@ -0,0 +1,828 @@
+import {
+	EventDispatcher,
+	MathUtils,
+	MOUSE,
+	Quaternion,
+	Vector2,
+	Vector3
+} from 'three';
+
+const _changeEvent = { type: 'change' };
+const _startEvent = { type: 'start' };
+const _endEvent = { type: 'end' };
+
+class TrackballControls extends EventDispatcher {
+
+	constructor( object, domElement ) {
+
+		super();
+
+		const scope = this;
+		const STATE = { NONE: - 1, ROTATE: 0, ZOOM: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_ZOOM_PAN: 4 };
+
+		this.object = object;
+		this.domElement = domElement;
+		this.domElement.style.touchAction = 'none'; // disable touch scroll
+
+		// API
+
+		this.enabled = true;
+
+		this.screen = { left: 0, top: 0, width: 0, height: 0 };
+
+		this.rotateSpeed = 1.0;
+		this.zoomSpeed = 1.2;
+		this.panSpeed = 0.3;
+
+		this.noRotate = false;
+		this.noZoom = false;
+		this.noPan = false;
+
+		this.staticMoving = false;
+		this.dynamicDampingFactor = 0.2;
+
+		this.minDistance = 0;
+		this.maxDistance = Infinity;
+
+		this.minZoom = 0;
+		this.maxZoom = Infinity;
+
+		this.keys = [ 'KeyA' /*A*/, 'KeyS' /*S*/, 'KeyD' /*D*/ ];
+
+		this.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };
+
+		// internals
+
+		this.target = new Vector3();
+
+		const EPS = 0.000001;
+
+		const lastPosition = new Vector3();
+		let lastZoom = 1;
+
+		let _state = STATE.NONE,
+			_keyState = STATE.NONE,
+
+			_touchZoomDistanceStart = 0,
+			_touchZoomDistanceEnd = 0,
+
+			_lastAngle = 0;
+
+		const _eye = new Vector3(),
+
+			_movePrev = new Vector2(),
+			_moveCurr = new Vector2(),
+
+			_lastAxis = new Vector3(),
+
+			_zoomStart = new Vector2(),
+			_zoomEnd = new Vector2(),
+
+			_panStart = new Vector2(),
+			_panEnd = new Vector2(),
+
+			_pointers = [],
+			_pointerPositions = {};
+
+		// for reset
+
+		this.target0 = this.target.clone();
+		this.position0 = this.object.position.clone();
+		this.up0 = this.object.up.clone();
+		this.zoom0 = this.object.zoom;
+
+		// methods
+
+		this.handleResize = function () {
+
+			const box = scope.domElement.getBoundingClientRect();
+			// adjustments come from similar code in the jquery offset() function
+			const d = scope.domElement.ownerDocument.documentElement;
+			scope.screen.left = box.left + window.pageXOffset - d.clientLeft;
+			scope.screen.top = box.top + window.pageYOffset - d.clientTop;
+			scope.screen.width = box.width;
+			scope.screen.height = box.height;
+
+		};
+
+		const getMouseOnScreen = ( function () {
+
+			const vector = new Vector2();
+
+			return function getMouseOnScreen( pageX, pageY ) {
+
+				vector.set(
+					( pageX - scope.screen.left ) / scope.screen.width,
+					( pageY - scope.screen.top ) / scope.screen.height
+				);
+
+				return vector;
+
+			};
+
+		}() );
+
+		const getMouseOnCircle = ( function () {
+
+			const vector = new Vector2();
+
+			return function getMouseOnCircle( pageX, pageY ) {
+
+				vector.set(
+					( ( pageX - scope.screen.width * 0.5 - scope.screen.left ) / ( scope.screen.width * 0.5 ) ),
+					( ( scope.screen.height + 2 * ( scope.screen.top - pageY ) ) / scope.screen.width ) // screen.width intentional
+				);
+
+				return vector;
+
+			};
+
+		}() );
+
+		this.rotateCamera = ( function () {
+
+			const axis = new Vector3(),
+				quaternion = new Quaternion(),
+				eyeDirection = new Vector3(),
+				objectUpDirection = new Vector3(),
+				objectSidewaysDirection = new Vector3(),
+				moveDirection = new Vector3();
+
+			return function rotateCamera() {
+
+				moveDirection.set( _moveCurr.x - _movePrev.x, _moveCurr.y - _movePrev.y, 0 );
+				let angle = moveDirection.length();
+
+				if ( angle ) {
+
+					_eye.copy( scope.object.position ).sub( scope.target );
+
+					eyeDirection.copy( _eye ).normalize();
+					objectUpDirection.copy( scope.object.up ).normalize();
+					objectSidewaysDirection.crossVectors( objectUpDirection, eyeDirection ).normalize();
+
+					objectUpDirection.setLength( _moveCurr.y - _movePrev.y );
+					objectSidewaysDirection.setLength( _moveCurr.x - _movePrev.x );
+
+					moveDirection.copy( objectUpDirection.add( objectSidewaysDirection ) );
+
+					axis.crossVectors( moveDirection, _eye ).normalize();
+
+					angle *= scope.rotateSpeed;
+					quaternion.setFromAxisAngle( axis, angle );
+
+					_eye.applyQuaternion( quaternion );
+					scope.object.up.applyQuaternion( quaternion );
+
+					_lastAxis.copy( axis );
+					_lastAngle = angle;
+
+				} else if ( ! scope.staticMoving && _lastAngle ) {
+
+					_lastAngle *= Math.sqrt( 1.0 - scope.dynamicDampingFactor );
+					_eye.copy( scope.object.position ).sub( scope.target );
+					quaternion.setFromAxisAngle( _lastAxis, _lastAngle );
+					_eye.applyQuaternion( quaternion );
+					scope.object.up.applyQuaternion( quaternion );
+
+				}
+
+				_movePrev.copy( _moveCurr );
+
+			};
+
+		}() );
+
+
+		this.zoomCamera = function () {
+
+			let factor;
+
+			if ( _state === STATE.TOUCH_ZOOM_PAN ) {
+
+				factor = _touchZoomDistanceStart / _touchZoomDistanceEnd;
+				_touchZoomDistanceStart = _touchZoomDistanceEnd;
+
+				if ( scope.object.isPerspectiveCamera ) {
+
+					_eye.multiplyScalar( factor );
+
+				} else if ( scope.object.isOrthographicCamera ) {
+
+					scope.object.zoom = MathUtils.clamp( scope.object.zoom / factor, scope.minZoom, scope.maxZoom );
+
+					if ( lastZoom !== scope.object.zoom ) {
+
+						scope.object.updateProjectionMatrix();
+
+					}
+
+				} else {
+
+					console.warn( 'THREE.TrackballControls: Unsupported camera type' );
+
+				}
+
+			} else {
+
+				factor = 1.0 + ( _zoomEnd.y - _zoomStart.y ) * scope.zoomSpeed;
+
+				if ( factor !== 1.0 && factor > 0.0 ) {
+
+					if ( scope.object.isPerspectiveCamera ) {
+
+						_eye.multiplyScalar( factor );
+
+					} else if ( scope.object.isOrthographicCamera ) {
+
+						scope.object.zoom = MathUtils.clamp( scope.object.zoom / factor, scope.minZoom, scope.maxZoom );
+
+						if ( lastZoom !== scope.object.zoom ) {
+
+							scope.object.updateProjectionMatrix();
+
+						}
+
+					} else {
+
+						console.warn( 'THREE.TrackballControls: Unsupported camera type' );
+
+					}
+
+				}
+
+				if ( scope.staticMoving ) {
+
+					_zoomStart.copy( _zoomEnd );
+
+				} else {
+
+					_zoomStart.y += ( _zoomEnd.y - _zoomStart.y ) * this.dynamicDampingFactor;
+
+				}
+
+			}
+
+		};
+
+		this.panCamera = ( function () {
+
+			const mouseChange = new Vector2(),
+				objectUp = new Vector3(),
+				pan = new Vector3();
+
+			return function panCamera() {
+
+				mouseChange.copy( _panEnd ).sub( _panStart );
+
+				if ( mouseChange.lengthSq() ) {
+
+					if ( scope.object.isOrthographicCamera ) {
+
+						const scale_x = ( scope.object.right - scope.object.left ) / scope.object.zoom / scope.domElement.clientWidth;
+						const scale_y = ( scope.object.top - scope.object.bottom ) / scope.object.zoom / scope.domElement.clientWidth;
+
+						mouseChange.x *= scale_x;
+						mouseChange.y *= scale_y;
+
+					}
+
+					mouseChange.multiplyScalar( _eye.length() * scope.panSpeed );
+
+					pan.copy( _eye ).cross( scope.object.up ).setLength( mouseChange.x );
+					pan.add( objectUp.copy( scope.object.up ).setLength( mouseChange.y ) );
+
+					scope.object.position.add( pan );
+					scope.target.add( pan );
+
+					if ( scope.staticMoving ) {
+
+						_panStart.copy( _panEnd );
+
+					} else {
+
+						_panStart.add( mouseChange.subVectors( _panEnd, _panStart ).multiplyScalar( scope.dynamicDampingFactor ) );
+
+					}
+
+				}
+
+			};
+
+		}() );
+
+		this.checkDistances = function () {
+
+			if ( ! scope.noZoom || ! scope.noPan ) {
+
+				if ( _eye.lengthSq() > scope.maxDistance * scope.maxDistance ) {
+
+					scope.object.position.addVectors( scope.target, _eye.setLength( scope.maxDistance ) );
+					_zoomStart.copy( _zoomEnd );
+
+				}
+
+				if ( _eye.lengthSq() < scope.minDistance * scope.minDistance ) {
+
+					scope.object.position.addVectors( scope.target, _eye.setLength( scope.minDistance ) );
+					_zoomStart.copy( _zoomEnd );
+
+				}
+
+			}
+
+		};
+
+		this.update = function () {
+
+			_eye.subVectors( scope.object.position, scope.target );
+
+			if ( ! scope.noRotate ) {
+
+				scope.rotateCamera();
+
+			}
+
+			if ( ! scope.noZoom ) {
+
+				scope.zoomCamera();
+
+			}
+
+			if ( ! scope.noPan ) {
+
+				scope.panCamera();
+
+			}
+
+			scope.object.position.addVectors( scope.target, _eye );
+
+			if ( scope.object.isPerspectiveCamera ) {
+
+				scope.checkDistances();
+
+				scope.object.lookAt( scope.target );
+
+				if ( lastPosition.distanceToSquared( scope.object.position ) > EPS ) {
+
+					scope.dispatchEvent( _changeEvent );
+
+					lastPosition.copy( scope.object.position );
+
+				}
+
+			} else if ( scope.object.isOrthographicCamera ) {
+
+				scope.object.lookAt( scope.target );
+
+				if ( lastPosition.distanceToSquared( scope.object.position ) > EPS || lastZoom !== scope.object.zoom ) {
+
+					scope.dispatchEvent( _changeEvent );
+
+					lastPosition.copy( scope.object.position );
+					lastZoom = scope.object.zoom;
+
+				}
+
+			} else {
+
+				console.warn( 'THREE.TrackballControls: Unsupported camera type' );
+
+			}
+
+		};
+
+		this.reset = function () {
+
+			_state = STATE.NONE;
+			_keyState = STATE.NONE;
+
+			scope.target.copy( scope.target0 );
+			scope.object.position.copy( scope.position0 );
+			scope.object.up.copy( scope.up0 );
+			scope.object.zoom = scope.zoom0;
+
+			scope.object.updateProjectionMatrix();
+
+			_eye.subVectors( scope.object.position, scope.target );
+
+			scope.object.lookAt( scope.target );
+
+			scope.dispatchEvent( _changeEvent );
+
+			lastPosition.copy( scope.object.position );
+			lastZoom = scope.object.zoom;
+
+		};
+
+		// listeners
+
+		function onPointerDown( event ) {
+
+			if ( scope.enabled === false ) return;
+
+			if ( _pointers.length === 0 ) {
+
+				scope.domElement.setPointerCapture( event.pointerId );
+
+				scope.domElement.addEventListener( 'pointermove', onPointerMove );
+				scope.domElement.addEventListener( 'pointerup', onPointerUp );
+
+			}
+
+			//
+
+			addPointer( event );
+
+			if ( event.pointerType === 'touch' ) {
+
+				onTouchStart( event );
+
+			} else {
+
+				onMouseDown( event );
+
+			}
+
+		}
+
+		function onPointerMove( event ) {
+
+			if ( scope.enabled === false ) return;
+
+			if ( event.pointerType === 'touch' ) {
+
+				onTouchMove( event );
+
+			} else {
+
+				onMouseMove( event );
+
+			}
+
+		}
+
+		function onPointerUp( event ) {
+
+			if ( scope.enabled === false ) return;
+
+			if ( event.pointerType === 'touch' ) {
+
+				onTouchEnd( event );
+
+			} else {
+
+				onMouseUp();
+
+			}
+
+			//
+
+			removePointer( event );
+
+			if ( _pointers.length === 0 ) {
+
+				scope.domElement.releasePointerCapture( event.pointerId );
+
+				scope.domElement.removeEventListener( 'pointermove', onPointerMove );
+				scope.domElement.removeEventListener( 'pointerup', onPointerUp );
+
+			}
+
+
+		}
+
+		function onPointerCancel( event ) {
+
+			removePointer( event );
+
+		}
+
+		function keydown( event ) {
+
+			if ( scope.enabled === false ) return;
+
+			window.removeEventListener( 'keydown', keydown );
+
+			if ( _keyState !== STATE.NONE ) {
+
+				return;
+
+			} else if ( event.code === scope.keys[ STATE.ROTATE ] && ! scope.noRotate ) {
+
+				_keyState = STATE.ROTATE;
+
+			} else if ( event.code === scope.keys[ STATE.ZOOM ] && ! scope.noZoom ) {
+
+				_keyState = STATE.ZOOM;
+
+			} else if ( event.code === scope.keys[ STATE.PAN ] && ! scope.noPan ) {
+
+				_keyState = STATE.PAN;
+
+			}
+
+		}
+
+		function keyup() {
+
+			if ( scope.enabled === false ) return;
+
+			_keyState = STATE.NONE;
+
+			window.addEventListener( 'keydown', keydown );
+
+		}
+
+		function onMouseDown( event ) {
+
+			if ( _state === STATE.NONE ) {
+
+				switch ( event.button ) {
+
+					case scope.mouseButtons.LEFT:
+						_state = STATE.ROTATE;
+						break;
+
+					case scope.mouseButtons.MIDDLE:
+						_state = STATE.ZOOM;
+						break;
+
+					case scope.mouseButtons.RIGHT:
+						_state = STATE.PAN;
+						break;
+
+				}
+
+			}
+
+			const state = ( _keyState !== STATE.NONE ) ? _keyState : _state;
+
+			if ( state === STATE.ROTATE && ! scope.noRotate ) {
+
+				_moveCurr.copy( getMouseOnCircle( event.pageX, event.pageY ) );
+				_movePrev.copy( _moveCurr );
+
+			} else if ( state === STATE.ZOOM && ! scope.noZoom ) {
+
+				_zoomStart.copy( getMouseOnScreen( event.pageX, event.pageY ) );
+				_zoomEnd.copy( _zoomStart );
+
+			} else if ( state === STATE.PAN && ! scope.noPan ) {
+
+				_panStart.copy( getMouseOnScreen( event.pageX, event.pageY ) );
+				_panEnd.copy( _panStart );
+
+			}
+
+			scope.dispatchEvent( _startEvent );
+
+		}
+
+		function onMouseMove( event ) {
+
+			const state = ( _keyState !== STATE.NONE ) ? _keyState : _state;
+
+			if ( state === STATE.ROTATE && ! scope.noRotate ) {
+
+				_movePrev.copy( _moveCurr );
+				_moveCurr.copy( getMouseOnCircle( event.pageX, event.pageY ) );
+
+			} else if ( state === STATE.ZOOM && ! scope.noZoom ) {
+
+				_zoomEnd.copy( getMouseOnScreen( event.pageX, event.pageY ) );
+
+			} else if ( state === STATE.PAN && ! scope.noPan ) {
+
+				_panEnd.copy( getMouseOnScreen( event.pageX, event.pageY ) );
+
+			}
+
+		}
+
+		function onMouseUp() {
+
+			_state = STATE.NONE;
+
+			scope.dispatchEvent( _endEvent );
+
+		}
+
+		function onMouseWheel( event ) {
+
+			if ( scope.enabled === false ) return;
+
+			if ( scope.noZoom === true ) return;
+
+			event.preventDefault();
+
+			switch ( event.deltaMode ) {
+
+				case 2:
+					// Zoom in pages
+					_zoomStart.y -= event.deltaY * 0.025;
+					break;
+
+				case 1:
+					// Zoom in lines
+					_zoomStart.y -= event.deltaY * 0.01;
+					break;
+
+				default:
+					// undefined, 0, assume pixels
+					_zoomStart.y -= event.deltaY * 0.00025;
+					break;
+
+			}
+
+			scope.dispatchEvent( _startEvent );
+			scope.dispatchEvent( _endEvent );
+
+		}
+
+		function onTouchStart( event ) {
+
+			trackPointer( event );
+
+			switch ( _pointers.length ) {
+
+				case 1:
+					_state = STATE.TOUCH_ROTATE;
+					_moveCurr.copy( getMouseOnCircle( _pointers[ 0 ].pageX, _pointers[ 0 ].pageY ) );
+					_movePrev.copy( _moveCurr );
+					break;
+
+				default: // 2 or more
+					_state = STATE.TOUCH_ZOOM_PAN;
+					const dx = _pointers[ 0 ].pageX - _pointers[ 1 ].pageX;
+					const dy = _pointers[ 0 ].pageY - _pointers[ 1 ].pageY;
+					_touchZoomDistanceEnd = _touchZoomDistanceStart = Math.sqrt( dx * dx + dy * dy );
+
+					const x = ( _pointers[ 0 ].pageX + _pointers[ 1 ].pageX ) / 2;
+					const y = ( _pointers[ 0 ].pageY + _pointers[ 1 ].pageY ) / 2;
+					_panStart.copy( getMouseOnScreen( x, y ) );
+					_panEnd.copy( _panStart );
+					break;
+
+			}
+
+			scope.dispatchEvent( _startEvent );
+
+		}
+
+		function onTouchMove( event ) {
+
+			trackPointer( event );
+
+			switch ( _pointers.length ) {
+
+				case 1:
+					_movePrev.copy( _moveCurr );
+					_moveCurr.copy( getMouseOnCircle( event.pageX, event.pageY ) );
+					break;
+
+				default: // 2 or more
+
+					const position = getSecondPointerPosition( event );
+
+					const dx = event.pageX - position.x;
+					const dy = event.pageY - position.y;
+					_touchZoomDistanceEnd = Math.sqrt( dx * dx + dy * dy );
+
+					const x = ( event.pageX + position.x ) / 2;
+					const y = ( event.pageY + position.y ) / 2;
+					_panEnd.copy( getMouseOnScreen( x, y ) );
+					break;
+
+			}
+
+		}
+
+		function onTouchEnd( event ) {
+
+			switch ( _pointers.length ) {
+
+				case 0:
+					_state = STATE.NONE;
+					break;
+
+				case 1:
+					_state = STATE.TOUCH_ROTATE;
+					_moveCurr.copy( getMouseOnCircle( event.pageX, event.pageY ) );
+					_movePrev.copy( _moveCurr );
+					break;
+
+				case 2:
+					_state = STATE.TOUCH_ZOOM_PAN;
+
+					for ( let i = 0; i < _pointers.length; i ++ ) {
+
+						if ( _pointers[ i ].pointerId !== event.pointerId ) {
+
+							const position = _pointerPositions[ _pointers[ i ].pointerId ];
+							_moveCurr.copy( getMouseOnCircle( position.x, position.y ) );
+							_movePrev.copy( _moveCurr );
+							break;
+
+						}
+
+					}
+
+					break;
+
+			}
+
+			scope.dispatchEvent( _endEvent );
+
+		}
+
+		function contextmenu( event ) {
+
+			if ( scope.enabled === false ) return;
+
+			event.preventDefault();
+
+		}
+
+		function addPointer( event ) {
+
+			_pointers.push( event );
+
+		}
+
+		function removePointer( event ) {
+
+			delete _pointerPositions[ event.pointerId ];
+
+			for ( let i = 0; i < _pointers.length; i ++ ) {
+
+				if ( _pointers[ i ].pointerId == event.pointerId ) {
+
+					_pointers.splice( i, 1 );
+					return;
+
+				}
+
+			}
+
+		}
+
+		function trackPointer( event ) {
+
+			let position = _pointerPositions[ event.pointerId ];
+
+			if ( position === undefined ) {
+
+				position = new Vector2();
+				_pointerPositions[ event.pointerId ] = position;
+
+			}
+
+			position.set( event.pageX, event.pageY );
+
+		}
+
+		function getSecondPointerPosition( event ) {
+
+			const pointer = ( event.pointerId === _pointers[ 0 ].pointerId ) ? _pointers[ 1 ] : _pointers[ 0 ];
+
+			return _pointerPositions[ pointer.pointerId ];
+
+		}
+
+		this.dispose = function () {
+
+			scope.domElement.removeEventListener( 'contextmenu', contextmenu );
+
+			scope.domElement.removeEventListener( 'pointerdown', onPointerDown );
+			scope.domElement.removeEventListener( 'pointercancel', onPointerCancel );
+			scope.domElement.removeEventListener( 'wheel', onMouseWheel );
+
+			scope.domElement.removeEventListener( 'pointermove', onPointerMove );
+			scope.domElement.removeEventListener( 'pointerup', onPointerUp );
+
+			window.removeEventListener( 'keydown', keydown );
+			window.removeEventListener( 'keyup', keyup );
+
+		};
+
+		this.domElement.addEventListener( 'contextmenu', contextmenu );
+
+		this.domElement.addEventListener( 'pointerdown', onPointerDown );
+		this.domElement.addEventListener( 'pointercancel', onPointerCancel );
+		this.domElement.addEventListener( 'wheel', onMouseWheel, { passive: false } );
+
+
+		window.addEventListener( 'keydown', keydown );
+		window.addEventListener( 'keyup', keyup );
+
+		this.handleResize();
+
+		// force an update at start
+		this.update();
+
+	}
+
+}
+
+export { TrackballControls };