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@@ -1,377 +0,0 @@
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-/**
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- * @author Eberhard Graether / http://egraether.com/
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- */
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-
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-THREE.TrackballControls = function ( object, domElement ) {
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-
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- THREE.EventTarget.call( this );
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-
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- var _this = this,
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- STATE = { NONE : -1, ROTATE : 0, ZOOM : 1, PAN : 2 };
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-
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- this.object = object;
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- this.domElement = ( domElement !== undefined ) ? domElement : document;
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-
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- // API
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-
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- this.enabled = true;
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-
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- this.screen = { width: window.innerWidth, height: window.innerHeight, offsetLeft: 0, offsetTop: 0 };
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- this.radius = ( this.screen.width + this.screen.height ) / 4;
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-
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- this.rotateSpeed = 1.0;
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- this.zoomSpeed = 1.2;
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- this.panSpeed = 0.3;
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-
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- this.noRotate = false;
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- this.noZoom = false;
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- this.noPan = false;
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-
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- this.staticMoving = false;
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- this.dynamicDampingFactor = 0.2;
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-
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- this.minDistance = 0;
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- this.maxDistance = Infinity;
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-
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- this.keys = [ 65 /*A*/, 83 /*S*/, 68 /*D*/ ];
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-
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- // internals
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-
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- this.target = new THREE.Vector3( 0, 0, 0 );
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-
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- var _keyPressed = false,
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- _state = STATE.NONE,
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-
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- _eye = new THREE.Vector3(),
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-
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- _rotateStart = new THREE.Vector3(),
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- _rotateEnd = new THREE.Vector3(),
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-
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- _zoomStart = new THREE.Vector2(),
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- _zoomEnd = new THREE.Vector2(),
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-
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- _panStart = new THREE.Vector2(),
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- _panEnd = new THREE.Vector2();
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-
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-
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- // methods
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-
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- this.handleEvent = function ( event ) {
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-
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- if ( typeof this[ event.type ] == 'function' ) {
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-
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- this[ event.type ]( event );
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-
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- }
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-
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- };
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-
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- this.getMouseOnScreen = function( clientX, clientY ) {
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-
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- return new THREE.Vector2(
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- ( clientX - _this.screen.offsetLeft ) / _this.radius * 0.5,
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- ( clientY - _this.screen.offsetTop ) / _this.radius * 0.5
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- );
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-
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- };
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-
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- this.getMouseProjectionOnBall = function( clientX, clientY ) {
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-
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- var mouseOnBall = new THREE.Vector3(
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- ( clientX - _this.screen.width * 0.5 - _this.screen.offsetLeft ) / _this.radius,
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- ( _this.screen.height * 0.5 + _this.screen.offsetTop - clientY ) / _this.radius,
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- 0.0
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- );
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-
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- var length = mouseOnBall.length();
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-
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- if ( length > 1.0 ) {
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-
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- mouseOnBall.normalize();
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-
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- } else {
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-
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- mouseOnBall.z = Math.sqrt( 1.0 - length * length );
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-
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- }
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-
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- _eye.copy( _this.object.position ).subSelf( _this.target );
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-
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- var projection = _this.object.up.clone().setLength( mouseOnBall.y );
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- projection.addSelf( _this.object.up.clone().crossSelf( _eye ).setLength( mouseOnBall.x ) );
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- projection.addSelf( _eye.setLength( mouseOnBall.z ) );
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-
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- return projection;
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-
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- };
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-
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- this.rotateCamera = function() {
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-
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- var angle = Math.acos( _rotateStart.dot( _rotateEnd ) / _rotateStart.length() / _rotateEnd.length() );
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-
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- if ( angle ) {
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-
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- var axis = ( new THREE.Vector3() ).cross( _rotateStart, _rotateEnd ).normalize(),
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- quaternion = new THREE.Quaternion();
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-
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- angle *= _this.rotateSpeed;
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-
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- quaternion.setFromAxisAngle( axis, -angle );
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-
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- quaternion.multiplyVector3( _eye );
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- quaternion.multiplyVector3( _this.object.up );
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-
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- quaternion.multiplyVector3( _rotateEnd );
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-
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- if ( _this.staticMoving ) {
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-
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- _rotateStart = _rotateEnd;
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-
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- } else {
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-
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- quaternion.setFromAxisAngle( axis, angle * ( _this.dynamicDampingFactor - 1.0 ) );
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- quaternion.multiplyVector3( _rotateStart );
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-
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- }
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-
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- }
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-
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- };
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-
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- this.zoomCamera = function() {
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-
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- var factor = 1.0 + ( _zoomEnd.y - _zoomStart.y ) * _this.zoomSpeed;
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-
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- if ( factor !== 1.0 && factor > 0.0 ) {
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-
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- _eye.multiplyScalar( factor );
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-
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- if ( _this.staticMoving ) {
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-
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- _zoomStart = _zoomEnd;
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-
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- } else {
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-
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- _zoomStart.y += ( _zoomEnd.y - _zoomStart.y ) * this.dynamicDampingFactor;
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-
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- }
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-
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- }
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-
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- };
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-
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- this.panCamera = function() {
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-
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- var mouseChange = _panEnd.clone().subSelf( _panStart );
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-
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- if ( mouseChange.lengthSq() ) {
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-
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- mouseChange.multiplyScalar( _eye.length() * _this.panSpeed );
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-
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- var pan = _eye.clone().crossSelf( _this.object.up ).setLength( mouseChange.x );
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- pan.addSelf( _this.object.up.clone().setLength( mouseChange.y ) );
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-
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- _this.object.position.addSelf( pan );
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- _this.target.addSelf( pan );
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-
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- if ( _this.staticMoving ) {
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-
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- _panStart = _panEnd;
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-
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- } else {
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-
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- _panStart.addSelf( mouseChange.sub( _panEnd, _panStart ).multiplyScalar( _this.dynamicDampingFactor ) );
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-
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- }
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-
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- }
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-
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- };
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-
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- this.checkDistances = function() {
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-
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- if ( !_this.noZoom || !_this.noPan ) {
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-
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- if ( _this.object.position.lengthSq() > _this.maxDistance * _this.maxDistance ) {
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-
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- _this.object.position.setLength( _this.maxDistance );
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-
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- }
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-
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- if ( _eye.lengthSq() < _this.minDistance * _this.minDistance ) {
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-
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- _this.object.position.add( _this.target, _eye.setLength( _this.minDistance ) );
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-
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- }
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-
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- }
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-
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- };
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-
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- // listeners
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-
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- function keydown( event ) {
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-
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- if ( ! _this.enabled ) return;
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-
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- if ( _state !== STATE.NONE ) {
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-
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- return;
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-
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- } else if ( event.keyCode === _this.keys[ STATE.ROTATE ] && !_this.noRotate ) {
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-
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- _state = STATE.ROTATE;
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-
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- } else if ( event.keyCode === _this.keys[ STATE.ZOOM ] && !_this.noZoom ) {
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-
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- _state = STATE.ZOOM;
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-
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- } else if ( event.keyCode === _this.keys[ STATE.PAN ] && !_this.noPan ) {
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-
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- _state = STATE.PAN;
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-
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- }
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-
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- if ( _state !== STATE.NONE ) {
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-
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- _keyPressed = true;
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-
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- }
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-
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- };
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-
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- function keyup( event ) {
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-
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- if ( ! _this.enabled ) return;
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-
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- if ( _state !== STATE.NONE ) {
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-
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- _state = STATE.NONE;
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-
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- }
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-
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- };
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-
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- function mousedown( event ) {
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-
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- if ( ! _this.enabled ) return;
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-
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- event.preventDefault();
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- event.stopPropagation();
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-
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- if ( _state === STATE.NONE ) {
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-
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- _state = event.button;
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-
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- if ( _state === STATE.ROTATE && !_this.noRotate ) {
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-
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- _rotateStart = _rotateEnd = _this.getMouseProjectionOnBall( event.clientX, event.clientY );
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-
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- } else if ( _state === STATE.ZOOM && !_this.noZoom ) {
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-
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- _zoomStart = _zoomEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
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-
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- } else if ( !this.noPan ) {
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-
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- _panStart = _panEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
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-
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- }
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-
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- }
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-
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- };
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-
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- function mousemove( event ) {
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-
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- if ( ! _this.enabled ) return;
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-
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- if ( _keyPressed ) {
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-
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- _rotateStart = _rotateEnd = _this.getMouseProjectionOnBall( event.clientX, event.clientY );
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- _zoomStart = _zoomEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
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- _panStart = _panEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
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-
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- _keyPressed = false;
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-
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- }
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-
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- if ( _state === STATE.NONE ) {
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-
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- return;
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-
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- } else if ( _state === STATE.ROTATE && !_this.noRotate ) {
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-
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- _rotateEnd = _this.getMouseProjectionOnBall( event.clientX, event.clientY );
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-
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- } else if ( _state === STATE.ZOOM && !_this.noZoom ) {
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-
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- _zoomEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
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-
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- } else if ( _state === STATE.PAN && !_this.noPan ) {
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-
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- _panEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
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-
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- }
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-
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- update();
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-
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- };
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-
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- function mouseup( event ) {
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-
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- if ( ! _this.enabled ) return;
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-
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- event.preventDefault();
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- event.stopPropagation();
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-
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- _state = STATE.NONE;
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-
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- };
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-
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- //
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-
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- function update() {
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-
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- _eye.copy( _this.object.position ).subSelf( _this.target );
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-
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- if ( !_this.noRotate ) {
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-
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- _this.rotateCamera();
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-
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- }
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-
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- if ( !_this.noZoom ) {
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-
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- _this.zoomCamera();
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-
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- }
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-
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- if ( !_this.noPan ) {
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-
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- _this.panCamera();
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-
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- }
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-
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- _this.object.position.add( _this.target, _eye );
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-
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- _this.checkDistances();
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-
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- _this.object.lookAt( _this.target );
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-
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- _this.dispatchEvent( { type: 'change' } );
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-
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- };
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-
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- this.domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false );
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-
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- this.domElement.addEventListener( 'mousemove', mousemove, false );
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- this.domElement.addEventListener( 'mousedown', mousedown, false );
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- this.domElement.addEventListener( 'mouseup', mouseup, false );
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-
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- window.addEventListener( 'keydown', keydown, false );
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- window.addEventListener( 'keyup', keyup, false );
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-
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- // TODO: Clean up the code so this isn't needed.
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- update();
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-
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-};
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