mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-16 19:17:57 +01:00
707 lines
17 KiB
JavaScript
Executable File
707 lines
17 KiB
JavaScript
Executable File
/**
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* @author qiao / https://github.com/qiao
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* @author mrdoob / http://mrdoob.com
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* @author alteredq / http://alteredqualia.com/
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* @author WestLangley / http://github.com/WestLangley
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* @author erich666 / http://erichaines.com
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*/
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/*global THREE, console */
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// This set of controls performs orbiting, dollying (zooming), and panning. It maintains
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// the "up" direction as +Y, unlike the TrackballControls. Touch on tablet and phones is
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// supported.
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//
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// Orbit - left mouse / touch: one finger move
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// Zoom - middle mouse, or mousewheel / touch: two finger spread or squish
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// Pan - right mouse, or arrow keys / touch: three finter swipe
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THREE.OrbitControls = function ( object, domElement ) {
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this.object = object;
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this.domElement = ( domElement !== undefined ) ? domElement : document;
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// API
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// Set to false to disable this control
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this.enabled = true;
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// "target" sets the location of focus, where the control orbits around
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// and where it pans with respect to.
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this.target = new THREE.Vector3();
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// center is old, deprecated; use "target" instead
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this.center = this.target;
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// This option actually enables dollying in and out; left as "zoom" for
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// backwards compatibility
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this.noZoom = false;
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this.zoomSpeed = 1.0;
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// Limits to how far you can dolly in and out ( PerspectiveCamera only )
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this.minDistance = 0;
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this.maxDistance = Infinity;
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// Limits to how far you can zoom in and out ( OrthographicCamera only )
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this.minZoom = 0;
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this.maxZoom = Infinity;
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// Set to true to disable this control
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this.noRotate = false;
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this.rotateSpeed = 1.0;
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// Set to true to disable this control
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this.noPan = false;
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this.keyPanSpeed = 7.0; // pixels moved per arrow key push
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// Set to true to automatically rotate around the target
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this.autoRotate = false;
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this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60
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// How far you can orbit vertically, upper and lower limits.
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// Range is 0 to Math.PI radians.
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this.minPolarAngle = 0; // radians
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this.maxPolarAngle = Math.PI; // radians
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// How far you can orbit horizontally, upper and lower limits.
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// If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ].
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this.minAzimuthAngle = - Infinity; // radians
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this.maxAzimuthAngle = Infinity; // radians
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// Set to true to disable use of the keys
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this.noKeys = false;
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// The four arrow keys
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this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
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// Mouse buttons
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this.mouseButtons = { ORBIT: THREE.MOUSE.LEFT, ZOOM: THREE.MOUSE.MIDDLE, PAN: THREE.MOUSE.RIGHT };
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////////////
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// internals
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var scope = this;
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var EPS = 0.000001;
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var rotateStart = new THREE.Vector2();
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var rotateEnd = new THREE.Vector2();
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var rotateDelta = new THREE.Vector2();
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var panStart = new THREE.Vector2();
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var panEnd = new THREE.Vector2();
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var panDelta = new THREE.Vector2();
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var panOffset = new THREE.Vector3();
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var offset = new THREE.Vector3();
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var dollyStart = new THREE.Vector2();
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var dollyEnd = new THREE.Vector2();
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var dollyDelta = new THREE.Vector2();
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var theta;
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var phi;
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var phiDelta = 0;
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var thetaDelta = 0;
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var scale = 1;
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var pan = new THREE.Vector3();
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var lastPosition = new THREE.Vector3();
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var lastQuaternion = new THREE.Quaternion();
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var STATE = { NONE : -1, ROTATE : 0, DOLLY : 1, PAN : 2, TOUCH_ROTATE : 3, TOUCH_DOLLY : 4, TOUCH_PAN : 5 };
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var state = STATE.NONE;
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// for reset
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this.target0 = this.target.clone();
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this.position0 = this.object.position.clone();
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this.zoom0 = this.object.zoom;
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// so camera.up is the orbit axis
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var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) );
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var quatInverse = quat.clone().inverse();
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// events
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var changeEvent = { type: 'change' };
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var startEvent = { type: 'start' };
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var endEvent = { type: 'end' };
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this.rotateLeft = function ( angle ) {
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if ( angle === undefined ) {
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angle = getAutoRotationAngle();
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}
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thetaDelta -= angle;
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};
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this.rotateUp = function ( angle ) {
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if ( angle === undefined ) {
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angle = getAutoRotationAngle();
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}
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phiDelta -= angle;
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};
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// pass in distance in world space to move left
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this.panLeft = function ( distance ) {
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var te = this.object.matrix.elements;
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// get X column of matrix
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panOffset.set( te[ 0 ], te[ 1 ], te[ 2 ] );
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panOffset.multiplyScalar( - distance );
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pan.add( panOffset );
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};
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// pass in distance in world space to move up
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this.panUp = function ( distance ) {
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var te = this.object.matrix.elements;
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// get Y column of matrix
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panOffset.set( te[ 4 ], te[ 5 ], te[ 6 ] );
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panOffset.multiplyScalar( distance );
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pan.add( panOffset );
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};
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// pass in x,y of change desired in pixel space,
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// right and down are positive
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this.pan = function ( deltaX, deltaY ) {
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var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
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if ( scope.object instanceof THREE.PerspectiveCamera ) {
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// perspective
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var position = scope.object.position;
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var offset = position.clone().sub( scope.target );
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var targetDistance = offset.length();
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// half of the fov is center to top of screen
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targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );
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// we actually don't use screenWidth, since perspective camera is fixed to screen height
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scope.panLeft( 2 * deltaX * targetDistance / element.clientHeight );
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scope.panUp( 2 * deltaY * targetDistance / element.clientHeight );
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} else if ( scope.object instanceof THREE.OrthographicCamera ) {
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// orthographic
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scope.panLeft( deltaX * (scope.object.right - scope.object.left) / element.clientWidth );
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scope.panUp( deltaY * (scope.object.top - scope.object.bottom) / element.clientHeight );
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} else {
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// camera neither orthographic or perspective
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console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
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}
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};
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this.dollyIn = function ( dollyScale ) {
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if ( dollyScale === undefined ) {
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dollyScale = getZoomScale();
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}
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if ( scope.object instanceof THREE.PerspectiveCamera ) {
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scale /= dollyScale;
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} else if ( scope.object instanceof THREE.OrthographicCamera ) {
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scope.object.zoom = Math.max( this.minZoom, Math.min( this.maxZoom, this.object.zoom * dollyScale ) );
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scope.object.updateProjectionMatrix();
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scope.dispatchEvent( changeEvent );
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} else {
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console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
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}
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};
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this.dollyOut = function ( dollyScale ) {
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if ( dollyScale === undefined ) {
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dollyScale = getZoomScale();
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}
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if ( scope.object instanceof THREE.PerspectiveCamera ) {
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scale *= dollyScale;
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} else if ( scope.object instanceof THREE.OrthographicCamera ) {
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scope.object.zoom = Math.max( this.minZoom, Math.min( this.maxZoom, this.object.zoom / dollyScale ) );
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scope.object.updateProjectionMatrix();
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scope.dispatchEvent( changeEvent );
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} else {
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console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
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}
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};
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this.update = function () {
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var position = this.object.position;
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offset.copy( position ).sub( this.target );
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// rotate offset to "y-axis-is-up" space
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offset.applyQuaternion( quat );
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// angle from z-axis around y-axis
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theta = Math.atan2( offset.x, offset.z );
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// angle from y-axis
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phi = Math.atan2( Math.sqrt( offset.x * offset.x + offset.z * offset.z ), offset.y );
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if ( this.autoRotate && state === STATE.NONE ) {
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this.rotateLeft( getAutoRotationAngle() );
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}
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theta += thetaDelta;
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phi += phiDelta;
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// restrict theta to be between desired limits
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theta = Math.max( this.minAzimuthAngle, Math.min( this.maxAzimuthAngle, theta ) );
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// restrict phi to be between desired limits
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phi = Math.max( this.minPolarAngle, Math.min( this.maxPolarAngle, phi ) );
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// restrict phi to be betwee EPS and PI-EPS
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phi = Math.max( EPS, Math.min( Math.PI - EPS, phi ) );
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var radius = offset.length() * scale;
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// restrict radius to be between desired limits
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radius = Math.max( this.minDistance, Math.min( this.maxDistance, radius ) );
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// move target to panned location
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this.target.add( pan );
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offset.x = radius * Math.sin( phi ) * Math.sin( theta );
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offset.y = radius * Math.cos( phi );
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offset.z = radius * Math.sin( phi ) * Math.cos( theta );
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// rotate offset back to "camera-up-vector-is-up" space
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offset.applyQuaternion( quatInverse );
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position.copy( this.target ).add( offset );
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this.object.lookAt( this.target );
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thetaDelta = 0;
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phiDelta = 0;
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scale = 1;
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pan.set( 0, 0, 0 );
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// update condition is:
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// min(camera displacement, camera rotation in radians)^2 > EPS
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// using small-angle approximation cos(x/2) = 1 - x^2 / 8
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if ( lastPosition.distanceToSquared( this.object.position ) > EPS
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|| 8 * (1 - lastQuaternion.dot(this.object.quaternion)) > EPS ) {
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this.dispatchEvent( changeEvent );
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lastPosition.copy( this.object.position );
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lastQuaternion.copy (this.object.quaternion );
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}
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};
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this.reset = function () {
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state = STATE.NONE;
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this.target.copy( this.target0 );
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this.object.position.copy( this.position0 );
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this.object.zoom = this.zoom0;
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this.object.updateProjectionMatrix();
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this.dispatchEvent( changeEvent );
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this.update();
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};
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this.getPolarAngle = function () {
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return phi;
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};
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this.getAzimuthalAngle = function () {
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return theta
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};
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function getAutoRotationAngle() {
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return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
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}
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function getZoomScale() {
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return Math.pow( 0.95, scope.zoomSpeed );
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}
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function onMouseDown( event ) {
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if ( scope.enabled === false ) return;
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event.preventDefault();
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if ( event.button === scope.mouseButtons.ORBIT ) {
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if ( scope.noRotate === true ) return;
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state = STATE.ROTATE;
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rotateStart.set( event.clientX, event.clientY );
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} else if ( event.button === scope.mouseButtons.ZOOM ) {
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if ( scope.noZoom === true ) return;
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state = STATE.DOLLY;
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dollyStart.set( event.clientX, event.clientY );
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} else if ( event.button === scope.mouseButtons.PAN ) {
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if ( scope.noPan === true ) return;
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state = STATE.PAN;
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panStart.set( event.clientX, event.clientY );
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}
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if ( state !== STATE.NONE ) {
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document.addEventListener( 'mousemove', onMouseMove, false );
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document.addEventListener( 'mouseup', onMouseUp, false );
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scope.dispatchEvent( startEvent );
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}
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}
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function onMouseMove( event ) {
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if ( scope.enabled === false ) return;
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event.preventDefault();
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var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
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if ( state === STATE.ROTATE ) {
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if ( scope.noRotate === true ) return;
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rotateEnd.set( event.clientX, event.clientY );
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rotateDelta.subVectors( rotateEnd, rotateStart );
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// rotating across whole screen goes 360 degrees around
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scope.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
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// rotating up and down along whole screen attempts to go 360, but limited to 180
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scope.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
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rotateStart.copy( rotateEnd );
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} else if ( state === STATE.DOLLY ) {
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if ( scope.noZoom === true ) return;
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dollyEnd.set( event.clientX, event.clientY );
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dollyDelta.subVectors( dollyEnd, dollyStart );
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if ( dollyDelta.y > 0 ) {
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scope.dollyIn();
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} else if ( dollyDelta.y < 0 ) {
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scope.dollyOut();
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}
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dollyStart.copy( dollyEnd );
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} else if ( state === STATE.PAN ) {
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if ( scope.noPan === true ) return;
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panEnd.set( event.clientX, event.clientY );
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panDelta.subVectors( panEnd, panStart );
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scope.pan( panDelta.x, panDelta.y );
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panStart.copy( panEnd );
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}
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if ( state !== STATE.NONE ) scope.update();
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}
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function onMouseUp( /* event */ ) {
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if ( scope.enabled === false ) return;
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document.removeEventListener( 'mousemove', onMouseMove, false );
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document.removeEventListener( 'mouseup', onMouseUp, false );
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scope.dispatchEvent( endEvent );
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state = STATE.NONE;
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}
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function onMouseWheel( event ) {
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if ( scope.enabled === false || scope.noZoom === true || state !== STATE.NONE ) return;
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event.preventDefault();
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event.stopPropagation();
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var delta = 0;
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if ( event.wheelDelta !== undefined ) { // WebKit / Opera / Explorer 9
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delta = event.wheelDelta;
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} else if ( event.detail !== undefined ) { // Firefox
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delta = - event.detail;
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}
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if ( delta > 0 ) {
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scope.dollyOut();
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} else if ( delta < 0 ) {
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scope.dollyIn();
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}
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scope.update();
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scope.dispatchEvent( startEvent );
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scope.dispatchEvent( endEvent );
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}
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function onKeyDown( event ) {
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if ( scope.enabled === false || scope.noKeys === true || scope.noPan === true ) return;
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switch ( event.keyCode ) {
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case scope.keys.UP:
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scope.pan( 0, scope.keyPanSpeed );
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scope.update();
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break;
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case scope.keys.BOTTOM:
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scope.pan( 0, - scope.keyPanSpeed );
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scope.update();
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break;
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case scope.keys.LEFT:
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scope.pan( scope.keyPanSpeed, 0 );
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scope.update();
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break;
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case scope.keys.RIGHT:
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scope.pan( - scope.keyPanSpeed, 0 );
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scope.update();
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break;
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}
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}
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function touchstart( event ) {
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if ( scope.enabled === false ) return;
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switch ( event.touches.length ) {
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case 1: // one-fingered touch: rotate
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if ( scope.noRotate === true ) return;
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state = STATE.TOUCH_ROTATE;
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rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
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break;
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case 2: // two-fingered touch: dolly
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if ( scope.noZoom === true ) return;
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state = STATE.TOUCH_DOLLY;
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var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
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var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
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var distance = Math.sqrt( dx * dx + dy * dy );
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dollyStart.set( 0, distance );
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break;
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case 3: // three-fingered touch: pan
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if ( scope.noPan === true ) return;
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state = STATE.TOUCH_PAN;
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panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
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break;
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default:
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state = STATE.NONE;
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|
}
|
|
|
|
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 if ( dollyDelta.y < 0 ) {
|
|
|
|
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;
|