From 43d67cdb71645724cc83fa5ab0f268db14e35ef2 Mon Sep 17 00:00:00 2001
From: Nguyen Quang-Liem <quang-liem.nguyen7@etu.univ-lorraine.fr>
Date: Mon, 10 Feb 2025 15:37:40 +0000
Subject: [PATCH] Upload New File
---
lib/TrackballControls.js | 537 +++++++++++++++++++++++++++++++++++++++
1 file changed, 537 insertions(+)
create mode 100644 lib/TrackballControls.js
diff --git a/lib/TrackballControls.js b/lib/TrackballControls.js
new file mode 100644
index 0000000..0935ce0
--- /dev/null
+++ b/lib/TrackballControls.js
@@ -0,0 +1,537 @@
+/**
+ * @author Eberhard Graether / http://egraether.com/
+ */
+
+THREE.TrackballControls = function ( object, domElement ) {
+
+ THREE.EventDispatcher.call( this );
+
+ var _this = this;
+ var STATE = { NONE: -1, ROTATE: 0, ZOOM: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_ZOOM: 4, TOUCH_PAN: 5 };
+
+ this.object = object;
+ this.domElement = ( domElement !== undefined ) ? domElement : document;
+
+ // API
+
+ this.enabled = true;
+
+ this.screen = { width: 0, height: 0, offsetLeft: 0, offsetTop: 0 };
+ this.radius = ( this.screen.width + this.screen.height ) / 4;
+
+ 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.keys = [ 65 /*A*/, 83 /*S*/, 68 /*D*/ ];
+
+ // internals
+
+ this.target = new THREE.Vector3();
+
+ var lastPosition = new THREE.Vector3();
+
+ var _state = STATE.NONE,
+ _prevState = STATE.NONE,
+
+ _eye = new THREE.Vector3(),
+
+ _rotateStart = new THREE.Vector3(),
+ _rotateEnd = new THREE.Vector3(),
+
+ _zoomStart = new THREE.Vector2(),
+ _zoomEnd = new THREE.Vector2(),
+
+ _touchZoomDistanceStart = 0,
+ _touchZoomDistanceEnd = 0,
+
+ _panStart = new THREE.Vector2(),
+ _panEnd = new THREE.Vector2();
+
+ // for reset
+
+ this.target0 = this.target.clone();
+ this.position0 = this.object.position.clone();
+ this.up0 = this.object.up.clone();
+
+ // events
+
+ var changeEvent = { type: 'change' };
+
+
+ // methods
+
+ this.handleResize = function () {
+
+ this.screen.width = window.innerWidth;
+ this.screen.height = window.innerHeight;
+
+ this.screen.offsetLeft = 0;
+ this.screen.offsetTop = 0;
+
+ this.radius = ( this.screen.width + this.screen.height ) / 4;
+
+ };
+
+ this.handleEvent = function ( event ) {
+
+ if ( typeof this[ event.type ] == 'function' ) {
+
+ this[ event.type ]( event );
+
+ }
+
+ };
+
+ this.getMouseOnScreen = function ( clientX, clientY ) {
+
+ return new THREE.Vector2(
+ ( clientX - _this.screen.offsetLeft ) / _this.radius * 0.5,
+ ( clientY - _this.screen.offsetTop ) / _this.radius * 0.5
+ );
+
+ };
+
+ this.getMouseProjectionOnBall = function ( clientX, clientY ) {
+
+ var mouseOnBall = new THREE.Vector3(
+ ( clientX - _this.screen.width * 0.5 - _this.screen.offsetLeft ) / _this.radius,
+ ( _this.screen.height * 0.5 + _this.screen.offsetTop - clientY ) / _this.radius,
+ 0.0
+ );
+
+ var length = mouseOnBall.length();
+
+ if ( length > 1.0 ) {
+
+ mouseOnBall.normalize();
+
+ } else {
+
+ mouseOnBall.z = Math.sqrt( 1.0 - length * length );
+
+ }
+
+ _eye.copy( _this.object.position ).sub( _this.target );
+
+ var projection = _this.object.up.clone().setLength( mouseOnBall.y );
+ projection.add( _this.object.up.clone().cross( _eye ).setLength( mouseOnBall.x ) );
+ projection.add( _eye.setLength( mouseOnBall.z ) );
+
+ return projection;
+
+ };
+
+ this.rotateCamera = function () {
+
+ var angle = Math.acos( _rotateStart.dot( _rotateEnd ) / _rotateStart.length() / _rotateEnd.length() );
+
+ if ( angle ) {
+
+ var axis = ( new THREE.Vector3() ).crossVectors( _rotateStart, _rotateEnd ).normalize(),
+ quaternion = new THREE.Quaternion();
+
+ angle *= _this.rotateSpeed;
+
+ quaternion.setFromAxisAngle( axis, -angle );
+
+ _eye.applyQuaternion( quaternion );
+ _this.object.up.applyQuaternion( quaternion );
+
+ _rotateEnd.applyQuaternion( quaternion );
+
+ if ( _this.staticMoving ) {
+
+ _rotateStart.copy( _rotateEnd );
+
+ } else {
+
+ quaternion.setFromAxisAngle( axis, angle * ( _this.dynamicDampingFactor - 1.0 ) );
+ _rotateStart.applyQuaternion( quaternion );
+
+ }
+
+ }
+
+ };
+
+ this.zoomCamera = function () {
+
+ if ( _state === STATE.TOUCH_ZOOM ) {
+
+ var factor = _touchZoomDistanceStart / _touchZoomDistanceEnd;
+ _touchZoomDistanceStart = _touchZoomDistanceEnd;
+ _eye.multiplyScalar( factor );
+
+ } else {
+
+ var factor = 1.0 + ( _zoomEnd.y - _zoomStart.y ) * _this.zoomSpeed;
+
+ if ( factor !== 1.0 && factor > 0.0 ) {
+
+ _eye.multiplyScalar( factor );
+
+ if ( _this.staticMoving ) {
+
+ _zoomStart.copy( _zoomEnd );
+
+ } else {
+
+ _zoomStart.y += ( _zoomEnd.y - _zoomStart.y ) * this.dynamicDampingFactor;
+
+ }
+
+ }
+
+ }
+
+ };
+
+ this.panCamera = function () {
+
+ var mouseChange = _panEnd.clone().sub( _panStart );
+
+ if ( mouseChange.lengthSq() ) {
+
+ mouseChange.multiplyScalar( _eye.length() * _this.panSpeed );
+
+ var pan = _eye.clone().cross( _this.object.up ).setLength( mouseChange.x );
+ pan.add( _this.object.up.clone().setLength( mouseChange.y ) );
+
+ _this.object.position.add( pan );
+ _this.target.add( pan );
+
+ if ( _this.staticMoving ) {
+
+ _panStart = _panEnd;
+
+ } else {
+
+ _panStart.add( mouseChange.subVectors( _panEnd, _panStart ).multiplyScalar( _this.dynamicDampingFactor ) );
+
+ }
+
+ }
+
+ };
+
+ this.checkDistances = function () {
+
+ if ( !_this.noZoom || !_this.noPan ) {
+
+ if ( _this.object.position.lengthSq() > _this.maxDistance * _this.maxDistance ) {
+
+ _this.object.position.setLength( _this.maxDistance );
+
+ }
+
+ if ( _eye.lengthSq() < _this.minDistance * _this.minDistance ) {
+
+ _this.object.position.addVectors( _this.target, _eye.setLength( _this.minDistance ) );
+
+ }
+
+ }
+
+ };
+
+ this.update = function () {
+
+ _eye.subVectors( _this.object.position, _this.target );
+
+ if ( !_this.noRotate ) {
+
+ _this.rotateCamera();
+
+ }
+
+ if ( !_this.noZoom ) {
+
+ _this.zoomCamera();
+
+ }
+
+ if ( !_this.noPan ) {
+
+ _this.panCamera();
+
+ }
+
+ _this.object.position.addVectors( _this.target, _eye );
+
+ _this.checkDistances();
+
+ _this.object.lookAt( _this.target );
+
+ if ( lastPosition.distanceToSquared( _this.object.position ) > 0 ) {
+
+ _this.dispatchEvent( changeEvent );
+
+ lastPosition.copy( _this.object.position );
+
+ }
+
+ };
+
+ this.reset = function () {
+
+ _state = STATE.NONE;
+ _prevState = STATE.NONE;
+
+ _this.target.copy( _this.target0 );
+ _this.object.position.copy( _this.position0 );
+ _this.object.up.copy( _this.up0 );
+
+ _eye.subVectors( _this.object.position, _this.target );
+
+ _this.object.lookAt( _this.target );
+
+ _this.dispatchEvent( changeEvent );
+
+ lastPosition.copy( _this.object.position );
+
+ };
+
+ // listeners
+
+ function keydown( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ window.removeEventListener( 'keydown', keydown );
+
+ _prevState = _state;
+
+ if ( _state !== STATE.NONE ) {
+
+ return;
+
+ } else if ( event.keyCode === _this.keys[ STATE.ROTATE ] && !_this.noRotate ) {
+
+ _state = STATE.ROTATE;
+
+ } else if ( event.keyCode === _this.keys[ STATE.ZOOM ] && !_this.noZoom ) {
+
+ _state = STATE.ZOOM;
+
+ } else if ( event.keyCode === _this.keys[ STATE.PAN ] && !_this.noPan ) {
+
+ _state = STATE.PAN;
+
+ }
+
+ }
+
+ function keyup( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ _state = _prevState;
+
+ window.addEventListener( 'keydown', keydown, false );
+
+ }
+
+ function mousedown( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ event.preventDefault();
+ event.stopPropagation();
+
+ if ( _state === STATE.NONE ) {
+
+ _state = event.button;
+
+ }
+
+ if ( _state === STATE.ROTATE && !_this.noRotate ) {
+
+ _rotateStart = _rotateEnd = _this.getMouseProjectionOnBall( event.clientX, event.clientY );
+
+ } else if ( _state === STATE.ZOOM && !_this.noZoom ) {
+
+ _zoomStart = _zoomEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
+
+ } else if ( _state === STATE.PAN && !_this.noPan ) {
+
+ _panStart = _panEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
+
+ }
+
+ document.addEventListener( 'mousemove', mousemove, false );
+ document.addEventListener( 'mouseup', mouseup, false );
+
+ }
+
+ function mousemove( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ event.preventDefault();
+ event.stopPropagation();
+
+ if ( _state === STATE.ROTATE && !_this.noRotate ) {
+
+ _rotateEnd = _this.getMouseProjectionOnBall( event.clientX, event.clientY );
+
+ } else if ( _state === STATE.ZOOM && !_this.noZoom ) {
+
+ _zoomEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
+
+ } else if ( _state === STATE.PAN && !_this.noPan ) {
+
+ _panEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
+
+ }
+
+ }
+
+ function mouseup( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ event.preventDefault();
+ event.stopPropagation();
+
+ _state = STATE.NONE;
+
+ document.removeEventListener( 'mousemove', mousemove );
+ document.removeEventListener( 'mouseup', mouseup );
+
+ }
+
+ function mousewheel( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ event.preventDefault();
+ event.stopPropagation();
+
+ var delta = 0;
+
+ if ( event.wheelDelta ) { // WebKit / Opera / Explorer 9
+
+ delta = event.wheelDelta / 40;
+
+ } else if ( event.detail ) { // Firefox
+
+ delta = - event.detail / 3;
+
+ }
+
+ _zoomStart.y += ( 1 / delta ) * 0.05;
+
+ }
+
+ function touchstart( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ switch ( event.touches.length ) {
+
+ case 1:
+ _state = STATE.TOUCH_ROTATE;
+ _rotateStart = _rotateEnd = _this.getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+ break;
+
+ case 2:
+ _state = STATE.TOUCH_ZOOM;
+ var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
+ var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
+ _touchZoomDistanceEnd = _touchZoomDistanceStart = Math.sqrt( dx * dx + dy * dy );
+ break;
+
+ case 3:
+ _state = STATE.TOUCH_PAN;
+ _panStart = _panEnd = _this.getMouseOnScreen( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+ break;
+
+ default:
+ _state = STATE.NONE;
+
+ }
+
+ }
+
+ function touchmove( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ event.preventDefault();
+ event.stopPropagation();
+
+ switch ( event.touches.length ) {
+
+ case 1:
+ _rotateEnd = _this.getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+ break;
+
+ case 2:
+ var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
+ var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
+ _touchZoomDistanceEnd = Math.sqrt( dx * dx + dy * dy )
+ break;
+
+ case 3:
+ _panEnd = _this.getMouseOnScreen( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+ break;
+
+ default:
+ _state = STATE.NONE;
+
+ }
+
+ }
+
+ function touchend( event ) {
+
+ if ( _this.enabled === false ) return;
+
+ switch ( event.touches.length ) {
+
+ case 1:
+ _rotateStart = _rotateEnd = _this.getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+ break;
+
+ case 2:
+ _touchZoomDistanceStart = _touchZoomDistanceEnd = 0;
+ break;
+
+ case 3:
+ _panStart = _panEnd = _this.getMouseOnScreen( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+ break;
+
+ }
+
+ _state = STATE.NONE;
+
+ }
+
+ this.domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false );
+
+ this.domElement.addEventListener( 'mousedown', mousedown, false );
+
+ this.domElement.addEventListener( 'mousewheel', mousewheel, false );
+ this.domElement.addEventListener( 'DOMMouseScroll', mousewheel, false ); // firefox
+
+ this.domElement.addEventListener( 'touchstart', touchstart, false );
+ this.domElement.addEventListener( 'touchend', touchend, false );
+ this.domElement.addEventListener( 'touchmove', touchmove, false );
+
+ window.addEventListener( 'keydown', keydown, false );
+ window.addEventListener( 'keyup', keyup, false );
+
+ this.handleResize();
+
+};
--
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