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/** | |
* @author qiao / https://github.com/qiao | |
* @author mrdoob / http://mrdoob.com | |
* @author alteredq / http://alteredqualia.com/ | |
* @author WestLangley / http://github.com/WestLangley | |
* @author erich666 / http://erichaines.com | |
*/ | |
/*global THREE, console */ | |
// This set of controls performs orbiting, dollying (zooming), and panning. It maintains | |
// the "up" direction as +Y, unlike the TrackballControls. Touch on tablet and phones is | |
// supported. | |
// | |
// Orbit - left mouse / touch: one finger move | |
// Zoom - middle mouse, or mousewheel / touch: two finger spread or squish | |
// Pan - right mouse, or arrow keys / touch: three finter swipe | |
THREE.OrbitControls = function ( object, domElement ) { | |
this.object = object; | |
this.domElement = ( domElement !== undefined ) ? domElement : document; | |
// API | |
// Set to false to disable this control | |
this.enabled = true; | |
// "target" sets the location of focus, where the control orbits around | |
// and where it pans with respect to. | |
this.target = new THREE.Vector3(); | |
// center is old, deprecated; use "target" instead | |
this.center = this.target; | |
// This option actually enables dollying in and out; left as "zoom" for | |
// backwards compatibility | |
this.noZoom = false; | |
this.zoomSpeed = 1.0; | |
// Limits to how far you can dolly in and out | |
this.minDistance = 0; | |
this.maxDistance = Infinity; | |
// Set to true to disable this control | |
this.noRotate = false; | |
this.rotateSpeed = 1.0; | |
// Set to true to disable this control | |
this.noPan = false; | |
this.keyPanSpeed = 7.0; // pixels moved per arrow key push | |
// Set to true to automatically rotate around the target | |
this.autoRotate = false; | |
this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60 | |
// How far you can orbit vertically, upper and lower limits. | |
// Range is 0 to Math.PI radians. | |
this.minPolarAngle = 0; // radians | |
this.maxPolarAngle = Math.PI; // radians | |
// How far you can orbit horizontally, upper and lower limits. | |
// If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ]. | |
this.minAzimuthAngle = - Infinity; // radians | |
this.maxAzimuthAngle = Infinity; // radians | |
// Set to true to disable use of the keys | |
this.noKeys = false; | |
// The four arrow keys | |
this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 }; | |
// Mouse buttons | |
this.mouseButtons = { ORBIT: THREE.MOUSE.LEFT, ZOOM: THREE.MOUSE.MIDDLE, PAN: THREE.MOUSE.RIGHT }; | |
//////////// | |
// internals | |
var scope = this; | |
var EPS = 0.000001; | |
var rotateStart = new THREE.Vector2(); | |
var rotateEnd = new THREE.Vector2(); | |
var rotateDelta = new THREE.Vector2(); | |
var panStart = new THREE.Vector2(); | |
var panEnd = new THREE.Vector2(); | |
var panDelta = new THREE.Vector2(); | |
var panOffset = new THREE.Vector3(); | |
var offset = new THREE.Vector3(); | |
var dollyStart = new THREE.Vector2(); | |
var dollyEnd = new THREE.Vector2(); | |
var dollyDelta = new THREE.Vector2(); | |
var theta; | |
var phi; | |
var phiDelta = 0; | |
var thetaDelta = 0; | |
var scale = 1; | |
var pan = new THREE.Vector3(); | |
var lastPosition = new THREE.Vector3(); | |
var lastQuaternion = new THREE.Quaternion(); | |
var STATE = { NONE : -1, ROTATE : 0, DOLLY : 1, PAN : 2, TOUCH_ROTATE : 3, TOUCH_DOLLY : 4, TOUCH_PAN : 5 }; | |
var state = STATE.NONE; | |
// for reset | |
this.target0 = this.target.clone(); | |
this.position0 = this.object.position.clone(); | |
// so camera.up is the orbit axis | |
var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) ); | |
var quatInverse = quat.clone().inverse(); | |
// events | |
var changeEvent = { type: 'change' }; | |
var startEvent = { type: 'start'}; | |
var endEvent = { type: 'end'}; | |
this.rotateLeft = function ( angle ) { | |
if ( angle === undefined ) { | |
angle = getAutoRotationAngle(); | |
} | |
thetaDelta -= angle; | |
}; | |
this.rotateUp = function ( angle ) { | |
if ( angle === undefined ) { | |
angle = getAutoRotationAngle(); | |
} | |
phiDelta -= angle; | |
}; | |
// pass in distance in world space to move left | |
this.panLeft = function ( distance ) { | |
var te = this.object.matrix.elements; | |
// get X column of matrix | |
panOffset.set( te[ 0 ], te[ 1 ], te[ 2 ] ); | |
panOffset.multiplyScalar( - distance ); | |
pan.add( panOffset ); | |
}; | |
// pass in distance in world space to move up | |
this.panUp = function ( distance ) { | |
var te = this.object.matrix.elements; | |
// get Y column of matrix | |
panOffset.set( te[ 4 ], te[ 5 ], te[ 6 ] ); | |
panOffset.multiplyScalar( distance ); | |
pan.add( panOffset ); | |
}; | |
// pass in x,y of change desired in pixel space, | |
// right and down are positive | |
this.pan = function ( deltaX, deltaY ) { | |
var element = scope.domElement === document ? scope.domElement.body : scope.domElement; | |
if ( scope.object.fov !== undefined ) { | |
// perspective | |
var position = scope.object.position; | |
var offset = position.clone().sub( scope.target ); | |
var targetDistance = offset.length(); | |
// half of the fov is center to top of screen | |
targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 ); | |
// we actually don't use screenWidth, since perspective camera is fixed to screen height | |
scope.panLeft( 2 * deltaX * targetDistance / element.clientHeight ); | |
scope.panUp( 2 * deltaY * targetDistance / element.clientHeight ); | |
} else if ( scope.object.top !== undefined ) { | |
// orthographic | |
scope.panLeft( deltaX * (scope.object.right - scope.object.left) / element.clientWidth ); | |
scope.panUp( deltaY * (scope.object.top - scope.object.bottom) / element.clientHeight ); | |
} else { | |
// camera neither orthographic or perspective | |
console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' ); | |
} | |
}; | |
this.dollyIn = function ( dollyScale ) { | |
if ( dollyScale === undefined ) { | |
dollyScale = getZoomScale(); | |
} | |
scale /= dollyScale; | |
}; | |
this.dollyOut = function ( dollyScale ) { | |
if ( dollyScale === undefined ) { | |
dollyScale = getZoomScale(); | |
} | |
scale *= dollyScale; | |
}; | |
this.update = function () { | |
var position = this.object.position; | |
offset.copy( position ).sub( this.target ); | |
// rotate offset to "y-axis-is-up" space | |
offset.applyQuaternion( quat ); | |
// angle from z-axis around y-axis | |
theta = Math.atan2( offset.x, offset.z ); | |
// angle from y-axis | |
phi = Math.atan2( Math.sqrt( offset.x * offset.x + offset.z * offset.z ), offset.y ); | |
if ( this.autoRotate && state === STATE.NONE ) { | |
this.rotateLeft( getAutoRotationAngle() ); | |
} | |
theta += thetaDelta; | |
phi += phiDelta; | |
// restrict theta to be between desired limits | |
theta = Math.max( this.minAzimuthAngle, Math.min( this.maxAzimuthAngle, theta ) ); | |
// restrict phi to be between desired limits | |
phi = Math.max( this.minPolarAngle, Math.min( this.maxPolarAngle, phi ) ); | |
// restrict phi to be betwee EPS and PI-EPS | |
phi = Math.max( EPS, Math.min( Math.PI - EPS, phi ) ); | |
var radius = offset.length() * scale; | |
// restrict radius to be between desired limits | |
radius = Math.max( this.minDistance, Math.min( this.maxDistance, radius ) ); | |
// move target to panned location | |
this.target.add( pan ); | |
offset.x = radius * Math.sin( phi ) * Math.sin( theta ); | |
offset.y = radius * Math.cos( phi ); | |
offset.z = radius * Math.sin( phi ) * Math.cos( theta ); | |
// rotate offset back to "camera-up-vector-is-up" space | |
offset.applyQuaternion( quatInverse ); | |
position.copy( this.target ).add( offset ); | |
this.object.lookAt( this.target ); | |
thetaDelta = 0; | |
phiDelta = 0; | |
scale = 1; | |
pan.set( 0, 0, 0 ); | |
// update condition is: | |
// min(camera displacement, camera rotation in radians)^2 > EPS | |
// using small-angle approximation cos(x/2) = 1 - x^2 / 8 | |
if ( lastPosition.distanceToSquared( this.object.position ) > EPS | |
|| 8 * (1 - lastQuaternion.dot(this.object.quaternion)) > EPS ) { | |
this.dispatchEvent( changeEvent ); | |
lastPosition.copy( this.object.position ); | |
lastQuaternion.copy (this.object.quaternion ); | |
} | |
}; | |
this.reset = function () { | |
state = STATE.NONE; | |
this.target.copy( this.target0 ); | |
this.object.position.copy( this.position0 ); | |
this.update(); | |
}; | |
this.getPolarAngle = function () { | |
return phi; | |
}; | |
this.getAzimuthalAngle = function () { | |
return theta | |
}; | |
function getAutoRotationAngle() { | |
return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed; | |
} | |
function getZoomScale() { | |
return Math.pow( 0.95, scope.zoomSpeed ); | |
} | |
function onMouseDown( event ) { | |
if ( scope.enabled === false ) return; | |
event.preventDefault(); | |
if ( event.button === scope.mouseButtons.ORBIT ) { | |
if ( scope.noRotate === true ) return; | |
state = STATE.ROTATE; | |
rotateStart.set( event.clientX, event.clientY ); | |
} else if ( event.button === scope.mouseButtons.ZOOM ) { | |
if ( scope.noZoom === true ) return; | |
state = STATE.DOLLY; | |
dollyStart.set( event.clientX, event.clientY ); | |
} else if ( event.button === scope.mouseButtons.PAN ) { | |
if ( scope.noPan === true ) return; | |
state = STATE.PAN; | |
panStart.set( event.clientX, event.clientY ); | |
} | |
if ( state !== STATE.NONE ) { | |
document.addEventListener( 'mousemove', onMouseMove, false ); | |
document.addEventListener( 'mouseup', onMouseUp, false ); | |
scope.dispatchEvent( startEvent ); | |
} | |
} | |
function onMouseMove( event ) { | |
if ( scope.enabled === false ) return; | |
event.preventDefault(); | |
var element = scope.domElement === document ? scope.domElement.body : scope.domElement; | |
if ( state === STATE.ROTATE ) { | |
if ( scope.noRotate === true ) return; | |
rotateEnd.set( event.clientX, event.clientY ); | |
rotateDelta.subVectors( rotateEnd, rotateStart ); | |
// rotating across whole screen goes 360 degrees around | |
scope.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed ); | |
// rotating up and down along whole screen attempts to go 360, but limited to 180 | |
scope.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed ); | |
rotateStart.copy( rotateEnd ); | |
} else if ( state === STATE.DOLLY ) { | |
if ( scope.noZoom === true ) return; | |
dollyEnd.set( event.clientX, event.clientY ); | |
dollyDelta.subVectors( dollyEnd, dollyStart ); | |
if ( dollyDelta.y > 0 ) { | |
scope.dollyIn(); | |
} else { | |
scope.dollyOut(); | |
} | |
dollyStart.copy( dollyEnd ); | |
} else if ( state === STATE.PAN ) { | |
if ( scope.noPan === true ) return; | |
panEnd.set( event.clientX, event.clientY ); | |
panDelta.subVectors( panEnd, panStart ); | |
scope.pan( panDelta.x, panDelta.y ); | |
panStart.copy( panEnd ); | |
} | |
if ( state !== STATE.NONE ) scope.update(); | |
} | |
function onMouseUp( /* event */ ) { | |
if ( scope.enabled === false ) return; | |
document.removeEventListener( 'mousemove', onMouseMove, false ); | |
document.removeEventListener( 'mouseup', onMouseUp, false ); | |
scope.dispatchEvent( endEvent ); | |
state = STATE.NONE; | |
} | |
function onMouseWheel( event ) { | |
if ( scope.enabled === false || scope.noZoom === true || state !== STATE.NONE ) return; | |
event.preventDefault(); | |
event.stopPropagation(); | |
var delta = 0; | |
if ( event.wheelDelta !== undefined ) { // WebKit / Opera / Explorer 9 | |
delta = event.wheelDelta; | |
} else if ( event.detail !== undefined ) { // Firefox | |
delta = - event.detail; | |
} | |
if ( delta > 0 ) { | |
scope.dollyOut(); | |
} else { | |
scope.dollyIn(); | |
} | |
scope.update(); | |
scope.dispatchEvent( startEvent ); | |
scope.dispatchEvent( endEvent ); | |
} | |
function onKeyDown( event ) { | |
if ( scope.enabled === false || scope.noKeys === true || scope.noPan === true ) return; | |
switch ( event.keyCode ) { | |
case scope.keys.UP: | |
scope.pan( 0, scope.keyPanSpeed ); | |
scope.update(); | |
break; | |
case scope.keys.BOTTOM: | |
scope.pan( 0, - scope.keyPanSpeed ); | |
scope.update(); | |
break; | |
case scope.keys.LEFT: | |
scope.pan( scope.keyPanSpeed, 0 ); | |
scope.update(); | |
break; | |
case scope.keys.RIGHT: | |
scope.pan( - scope.keyPanSpeed, 0 ); | |
scope.update(); | |
break; | |
} | |
} | |
function touchstart( event ) { | |
if ( scope.enabled === false ) return; | |
switch ( event.touches.length ) { | |
case 1: // one-fingered touch: rotate | |
if ( scope.noRotate === true ) return; | |
state = STATE.TOUCH_ROTATE; | |
rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ); | |
break; | |
case 2: // two-fingered touch: dolly | |
if ( scope.noZoom === true ) return; | |
state = STATE.TOUCH_DOLLY; | |
var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX; | |
var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY; | |
var distance = Math.sqrt( dx * dx + dy * dy ); | |
dollyStart.set( 0, distance ); | |
break; | |
case 3: // three-fingered touch: pan | |
if ( scope.noPan === true ) return; | |
state = STATE.TOUCH_PAN; | |
panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ); | |
break; | |
default: | |
state = STATE.NONE; | |
} | |
if ( state !== STATE.NONE ) scope.dispatchEvent( startEvent ); | |
} | |
function touchmove( event ) { | |
if ( scope.enabled === false ) return; | |
event.preventDefault(); | |
event.stopPropagation(); | |
var element = scope.domElement === document ? scope.domElement.body : scope.domElement; | |
switch ( event.touches.length ) { | |
case 1: // one-fingered touch: rotate | |
if ( scope.noRotate === true ) return; | |
if ( state !== STATE.TOUCH_ROTATE ) return; | |
rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ); | |
rotateDelta.subVectors( rotateEnd, rotateStart ); | |
// rotating across whole screen goes 360 degrees around | |
scope.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed ); | |
// rotating up and down along whole screen attempts to go 360, but limited to 180 | |
scope.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed ); | |
rotateStart.copy( rotateEnd ); | |
scope.update(); | |
break; | |
case 2: // two-fingered touch: dolly | |
if ( scope.noZoom === true ) return; | |
if ( state !== STATE.TOUCH_DOLLY ) return; | |
var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX; | |
var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY; | |
var distance = Math.sqrt( dx * dx + dy * dy ); | |
dollyEnd.set( 0, distance ); | |
dollyDelta.subVectors( dollyEnd, dollyStart ); | |
if ( dollyDelta.y > 0 ) { | |
scope.dollyOut(); | |
} else { | |
scope.dollyIn(); | |
} | |
dollyStart.copy( dollyEnd ); | |
scope.update(); | |
break; | |
case 3: // three-fingered touch: pan | |
if ( scope.noPan === true ) return; | |
if ( state !== STATE.TOUCH_PAN ) return; | |
panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ); | |
panDelta.subVectors( panEnd, panStart ); | |
scope.pan( panDelta.x, panDelta.y ); | |
panStart.copy( panEnd ); | |
scope.update(); | |
break; | |
default: | |
state = STATE.NONE; | |
} | |
} | |
function touchend( /* event */ ) { | |
if ( scope.enabled === false ) return; | |
scope.dispatchEvent( endEvent ); | |
state = STATE.NONE; | |
} | |
this.domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false ); | |
this.domElement.addEventListener( 'mousedown', onMouseDown, false ); | |
this.domElement.addEventListener( 'mousewheel', onMouseWheel, false ); | |
this.domElement.addEventListener( 'DOMMouseScroll', onMouseWheel, false ); // firefox | |
this.domElement.addEventListener( 'touchstart', touchstart, false ); | |
this.domElement.addEventListener( 'touchend', touchend, false ); | |
this.domElement.addEventListener( 'touchmove', touchmove, false ); | |
window.addEventListener( 'keydown', onKeyDown, false ); | |
// force an update at start | |
this.update(); | |
}; | |
THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype ); | |
THREE.OrbitControls.prototype.constructor = THREE.OrbitControls; |