तीन.js - अंतरिक्ष या तारामंडल के लिए नियंत्रण करते हैं

 /** * @author Eberhard Graether / http://egraether.com/ * @author Mark Lundin / http://mark-lundin.com * @author Simone Manini / http://daron1337.imtqy.com * @author Luca Antiga / http://lantiga.imtqy.com * modified by Zander. */ THREE.AstroControls = function ( object, domElement ) { var _this = this; var STATE = { NONE: - 1, ROTATE: 0, ZOOM: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_ZOOM_PAN: 4 }; this.object = object; this.domElement = ( domElement !== undefined ) ? domElement : document; this.rotationZFactor = 0.0;//1; this.RVMovingFactor = 0.0; this.autoRotate = false; this.autoRotateSpeed = 0.001; this.allSpeedsFactor = 1; // 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.keys = [null, null, null]; // [ 65 /*A*/, 83 /*S*/, 68 /*D*/ ]; // internals this.target = new THREE.Vector3(); var EPS = 0.000001; var lastPosition = new THREE.Vector3(); var _state = STATE.NONE, _prevState = STATE.NONE, _eye = new THREE.Vector3(), _movePrev = new THREE.Vector2(), _moveCurr = new THREE.Vector2(), _lastAxis = new THREE.Vector3(), _lastAngle = 0, _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' }; var startEvent = { type: 'start' }; var endEvent = { type: 'end' }; // methods this.handleResize = function () { if ( this.domElement === document ) { this.screen.left = 0; this.screen.top = 0; this.screen.width = window.innerWidth; this.screen.height = window.innerHeight; } else { var box = this.domElement.getBoundingClientRect(); // adjustments come from similar code in the jquery offset() function var d = this.domElement.ownerDocument.documentElement; this.screen.left = box.left + window.pageXOffset - d.clientLeft; this.screen.top = box.top + window.pageYOffset - d.clientTop; this.screen.width = box.width; this.screen.height = box.height; } }; var getMouseOnScreen = ( function () { var vector = new THREE.Vector2(); return function getMouseOnScreen( pageX, pageY ) { vector.set( ( pageX - _this.screen.left ) / _this.screen.width, ( pageY - _this.screen.top ) / _this.screen.height ); return vector; }; }() ); var getMouseOnCircle = ( function () { var vector = new THREE.Vector2(); return function getMouseOnCircle( pageX, pageY ) { vector.set( ( ( pageX - _this.screen.width * 0.5 - _this.screen.left ) / ( _this.screen.width * 0.5 ) ), ( ( _this.screen.height + 2 * ( _this.screen.top - pageY ) ) / _this.screen.width ) // screen.width intentional ); return vector; }; }() ); this.rotateCamera = ( function () { var axis = new THREE.Vector3(), quaternion = new THREE.Quaternion(), eyeDirection = new THREE.Vector3(), objectUpDirection = new THREE.Vector3(), objectSidewaysDirection = new THREE.Vector3(), moveDirection = new THREE.Vector3(), tmpQuaternion = new THREE.Quaternion(), angle; return function rotateCamera() { if (_this.autoRotate) _moveCurr.x += _this.autoRotateSpeed; moveDirection.set( _moveCurr.x - _movePrev.x, _moveCurr.y - _movePrev.y, 0 ); moveDirection.setLength(moveDirection.length() * _this.allSpeedsFactor); angle = moveDirection.length(); if ( angle || _this.rotationZFactor) { _eye.copy( _this.object.position ).sub( _this.target ); eyeDirection.copy( _eye ).normalize(); objectUpDirection.copy( _this.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 *= _this.rotateSpeed; quaternion.setFromAxisAngle( axis, angle ); // added for z-axis rotation tmpQuaternion.setFromAxisAngle( eyeDirection, _this.rotationZFactor ); quaternion.multiply( tmpQuaternion ); // end add _eye.applyQuaternion( quaternion ); _this.object.up.applyQuaternion( quaternion ); _lastAxis.copy( axis ); _lastAngle = angle; } else if ( ! _this.staticMoving && _lastAngle ) { _lastAngle *= Math.sqrt( 1.0 - _this.dynamicDampingFactor * _this.allSpeedsFactor ); _eye.copy( _this.object.position ).sub( _this.target ); quaternion.setFromAxisAngle( _lastAxis, _lastAngle ); _eye.applyQuaternion( quaternion ); _this.object.up.applyQuaternion( quaternion ); } _movePrev.copy( _moveCurr ); }; }() ); this.zoomCamera = function () { var factor; if ( _state === STATE.TOUCH_ZOOM_PAN ) { factor = _this.allSpeedsFactor * _touchZoomDistanceStart / _touchZoomDistanceEnd; _touchZoomDistanceStart = _touchZoomDistanceEnd; _eye.multiplyScalar( factor ); } else { factor = 1.0 + ( _zoomEnd.y - _zoomStart.y ) * _this.zoomSpeed * _this.allSpeedsFactor; 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.allSpeedsFactor; } } }; this.panCamera = ( function () { var mouseChange = new THREE.Vector2(), objectUp = new THREE.Vector3(), rv = new THREE.Vector3() pan = new THREE.Vector3(); return function panCamera() { mouseChange.copy( _panEnd ).sub( _panStart ); mouseChange.setLength(mouseChange.length() * _this.allSpeedsFactor); if ( mouseChange.lengthSq() || _this.RVMovingFactor ) { mouseChange.multiplyScalar( _eye.length() * _this.panSpeed ); pan.copy( _eye ).cross( _this.object.up ).setLength( mouseChange.x ); pan.add( objectUp.copy( _this.object.up ).setLength( mouseChange.y ) ); pan.add( rv.copy( _eye ).setLength(_this.RVMovingFactor * _eye.length()) ); _this.object.position.add( pan ); _this.target.add( pan ); if ( _this.staticMoving ) { _panStart.copy( _panEnd ); } else { _panStart.add( mouseChange.subVectors( _panEnd, _panStart ).multiplyScalar( _this.dynamicDampingFactor * _this.allSpeedsFactor ) ); } } }; }() ); this.checkDistances = function () { if ( ! _this.noZoom || ! _this.noPan ) { if ( _eye.lengthSq() > _this.maxDistance * _this.maxDistance ) { _this.object.position.addVectors( _this.target, _eye.setLength( _this.maxDistance ) ); _zoomStart.copy( _zoomEnd ); } if ( _eye.lengthSq() < _this.minDistance * _this.minDistance ) { _this.object.position.addVectors( _this.target, _eye.setLength( _this.minDistance ) ); _zoomStart.copy( _zoomEnd ); } } }; 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 ) > EPS ) { _this.dispatchEvent( changeEvent ); lastPosition.copy( _this.object.position ); } _this.RVMovingFactor = 0.0; _this.rotationZFactor = 0.0; }; 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; } **/ switch (event.keyCode) { // 81:Q; 87:W; 69:E; 82:R; // 65:A; 83:S; 68:D; 70:F; // 90:Z; 88:X; 67:C; 86:V; // 107:+; 109:-; 16:Shift; 17:Ctrl; 18:Alt; 9:Tab; // 38:Up; 37:Left; 40:Down; 39:Right; case 87: _this.RVMovingFactor = -0.002 * _this.allSpeedsFactor;//W break; case 83: _this.RVMovingFactor = 0.002 * _this.allSpeedsFactor;//S break; case 65: _movePrev.copy( _moveCurr ); _moveCurr.x -= 0.01 * _this.allSpeedsFactor; //A break; case 68: _movePrev.copy( _moveCurr ); _moveCurr.x += 0.01 * _this.allSpeedsFactor; //D break; case 90: _movePrev.copy( _moveCurr ); _moveCurr.y -= 0.01 * _this.allSpeedsFactor; //Z break; case 88: _movePrev.copy( _moveCurr ); _moveCurr.y += 0.01 * _this.allSpeedsFactor; //X break; case 81: _this.rotationZFactor = -0.01 * _this.allSpeedsFactor;//Q break; case 69: _this.rotationZFactor = 0.01 * _this.allSpeedsFactor;//E break; case 107: _zoomStart.y += 0.02 * _this.allSpeedsFactor; // + break; case 109: _zoomStart.y -= 0.02 * _this.allSpeedsFactor; // - break; case 38: // up _panEnd.y -= 0.01 * _this.allSpeedsFactor; break; case 40: // down _panEnd.y += 0.01 * _this.allSpeedsFactor; break; case 37: // left _panEnd.x -= 0.01 * _this.allSpeedsFactor; break; case 39: // right _panEnd.x += 0.01 * _this.allSpeedsFactor; break; case 82: // R _this.allSpeedsFactor = 0.33; break; case 16: // Shift _this.allSpeedsFactor = 0.05; break; } } function keyup( event ) { if ( _this.enabled === false ) return; switch (event.keyCode) { // 81:Q; 87:W; 69:E; 82:R; // 65:A; 83:S; 68:D; 70:F; // 90:Z; 88:X; 67:C; 86:V; // 107:+; 109:-; 16:Shift; 17:Ctrl; 18:Alt; 9:Tab; // 38:Up; 37:Left; 40:Down; 39:Right; case 87: // W _this.RVMovingFactor = 0.0; break; case 83: // S _this.RVMovingFactor = 0.0; break; case 81: // Q _this.rotationZFactor = 0.0; break; case 69: // E _this.rotationZFactor = 0.0; break; case 82: // R _this.allSpeedsFactor = 1.0; break; case 16: // Shift _this.allSpeedsFactor = 1.0; break; } _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 ) { _moveCurr.copy( getMouseOnCircle( event.pageX, event.pageY ) ); _movePrev.copy( _moveCurr ); } else if ( _state === STATE.ZOOM && ! _this.noZoom ) { _zoomStart.copy( getMouseOnScreen( event.pageX, event.pageY ) ); _zoomEnd.copy( _zoomStart ); } else if ( _state === STATE.PAN && ! _this.noPan ) { _panStart.copy( getMouseOnScreen( event.pageX, event.pageY ) ); _panEnd.copy( _panStart ); } document.addEventListener( 'mousemove', mousemove, false ); document.addEventListener( 'mouseup', mouseup, false ); _this.dispatchEvent( startEvent ); } function mousemove( event ) { if ( _this.enabled === false ) return; event.preventDefault(); event.stopPropagation(); if ( _state === STATE.ROTATE && ! _this.noRotate ) { _movePrev.copy( _moveCurr ); _moveCurr.copy( getMouseOnCircle( event.pageX, event.pageY ) ); } else if ( _state === STATE.ZOOM && ! _this.noZoom ) { _zoomEnd.copy( getMouseOnScreen( event.pageX, event.pageY ) ); } else if ( _state === STATE.PAN && ! _this.noPan ) { _panEnd.copy( getMouseOnScreen( event.pageX, event.pageY ) ); } } function mouseup( event ) { if ( _this.enabled === false ) return; event.preventDefault(); event.stopPropagation(); _state = STATE.NONE; document.removeEventListener( 'mousemove', mousemove ); document.removeEventListener( 'mouseup', mouseup ); _this.dispatchEvent( endEvent ); } function mousewheel( event ) { if ( _this.enabled === false ) return; if ( _this.noZoom === true ) return; event.preventDefault(); event.stopPropagation(); switch ( event.deltaMode ) { case 2: // Zoom in pages _zoomStart.y -= event.deltaY * 0.025 * _this.allSpeedsFactor; break; case 1: // Zoom in lines _zoomStart.y -= event.deltaY * 0.01 * _this.allSpeedsFactor; break; default: // undefined, 0, assume pixels _zoomStart.y -= event.deltaY * 0.00025 * _this.allSpeedsFactor; break; } _this.dispatchEvent( startEvent ); _this.dispatchEvent( endEvent ); } function touchstart( event ) { if ( _this.enabled === false ) return; switch ( event.touches.length ) { case 1: _state = STATE.TOUCH_ROTATE; _moveCurr.copy( getMouseOnCircle( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ) ); _movePrev.copy( _moveCurr ); break; default: // 2 or more _state = STATE.TOUCH_ZOOM_PAN; 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 ); var x = ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX ) / 2; var y = ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY ) / 2; _panStart.copy( getMouseOnScreen( x, y ) ); _panEnd.copy( _panStart ); break; } _this.dispatchEvent( startEvent ); } function touchmove( event ) { if ( _this.enabled === false ) return; event.preventDefault(); event.stopPropagation(); switch ( event.touches.length ) { case 1: _movePrev.copy( _moveCurr ); _moveCurr.copy( getMouseOnCircle( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ) ); break; default: // 2 or more 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 ); var x = ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX ) / 2; var y = ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY ) / 2; _panEnd.copy( getMouseOnScreen( x, y ) ); break; } } function touchend( event ) { if ( _this.enabled === false ) return; switch ( event.touches.length ) { case 0: _state = STATE.NONE; break; case 1: _state = STATE.TOUCH_ROTATE; _moveCurr.copy( getMouseOnCircle( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ) ); _movePrev.copy( _moveCurr ); break; } _this.dispatchEvent( endEvent ); } function contextmenu( event ) { if ( _this.enabled === false ) return; event.preventDefault(); } this.dispose = function () { this.domElement.removeEventListener( 'contextmenu', contextmenu, false ); this.domElement.removeEventListener( 'mousedown', mousedown, false ); this.domElement.removeEventListener( 'wheel', mousewheel, false ); this.domElement.removeEventListener( 'touchstart', touchstart, false ); this.domElement.removeEventListener( 'touchend', touchend, false ); this.domElement.removeEventListener( 'touchmove', touchmove, false ); document.removeEventListener( 'mousemove', mousemove, false ); document.removeEventListener( 'mouseup', mouseup, false ); window.removeEventListener( 'keydown', keydown, false ); window.removeEventListener( 'keyup', keyup, false ); }; this.domElement.addEventListener( 'contextmenu', contextmenu, false ); this.domElement.addEventListener( 'mousedown', mousedown, false ); this.domElement.addEventListener( 'wheel', mousewheel, false ); 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(); // force an update at start this.update(); }; THREE.AstroControls.prototype = Object.create( THREE.EventDispatcher.prototype ); THREE.AstroControls.prototype.constructor = THREE.AstroControls;