mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-08-22 05:10:45 +02:00
299 lines
7.2 KiB
JavaScript
299 lines
7.2 KiB
JavaScript
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/**
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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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*/
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THREE.EditorControls = function ( object, domElement ) {
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domElement = ( domElement !== undefined ) ? domElement : document;
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// API
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this.enabled = true;
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this.center = new THREE.Vector3();
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// internals
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var scope = this;
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var vector = new THREE.Vector3();
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var STATE = { NONE: -1, ROTATE: 0, ZOOM: 1, PAN: 2 };
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var state = STATE.NONE;
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var center = this.center;
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var normalMatrix = new THREE.Matrix3();
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var pointer = new THREE.Vector2();
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var pointerOld = new THREE.Vector2();
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// events
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var changeEvent = { type: 'change' };
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this.focus = function ( target, frame ) {
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var scale = new THREE.Vector3();
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target.matrixWorld.decompose( center, new THREE.Quaternion(), scale );
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if ( frame && target.geometry ) {
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scale = ( scale.x + scale.y + scale.z ) / 3;
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center.add(target.geometry.boundingSphere.center.clone().multiplyScalar( scale ));
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var radius = target.geometry.boundingSphere.radius * ( scale );
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var pos = object.position.clone().sub( center ).normalize().multiplyScalar( radius * 2 );
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object.position.copy( center ).add( pos );
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}
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object.lookAt( center );
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scope.dispatchEvent( changeEvent );
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};
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this.pan = function ( delta ) {
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var distance = object.position.distanceTo( center );
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delta.multiplyScalar( distance * 0.001 );
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delta.applyMatrix3( normalMatrix.getNormalMatrix( object.matrix ) );
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object.position.add( delta );
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center.add( delta );
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scope.dispatchEvent( changeEvent );
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};
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this.zoom = function ( delta ) {
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var distance = object.position.distanceTo( center );
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delta.multiplyScalar( distance * 0.001 );
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if ( delta.length() > distance ) return;
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delta.applyMatrix3( normalMatrix.getNormalMatrix( object.matrix ) );
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object.position.add( delta );
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scope.dispatchEvent( changeEvent );
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};
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this.rotate = function ( delta ) {
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vector.copy( object.position ).sub( center );
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var theta = Math.atan2( vector.x, vector.z );
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var phi = Math.atan2( Math.sqrt( vector.x * vector.x + vector.z * vector.z ), vector.y );
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theta += delta.x;
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phi += delta.y;
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var EPS = 0.000001;
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phi = Math.max( EPS, Math.min( Math.PI - EPS, phi ) );
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var radius = vector.length();
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vector.x = radius * Math.sin( phi ) * Math.sin( theta );
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vector.y = radius * Math.cos( phi );
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vector.z = radius * Math.sin( phi ) * Math.cos( theta );
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object.position.copy( center ).add( vector );
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object.lookAt( center );
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scope.dispatchEvent( changeEvent );
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};
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// mouse
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function onMouseDown( event ) {
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if ( scope.enabled === false ) return;
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if ( event.button === 0 ) {
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state = STATE.ROTATE;
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} else if ( event.button === 1 ) {
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state = STATE.ZOOM;
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} else if ( event.button === 2 ) {
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state = STATE.PAN;
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}
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pointerOld.set( event.clientX, event.clientY );
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domElement.addEventListener( 'mousemove', onMouseMove, false );
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domElement.addEventListener( 'mouseup', onMouseUp, false );
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domElement.addEventListener( 'mouseout', onMouseUp, false );
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domElement.addEventListener( 'dblclick', onMouseUp, false );
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}
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function onMouseMove( event ) {
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if ( scope.enabled === false ) return;
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pointer.set( event.clientX, event.clientY );
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var movementX = pointer.x - pointerOld.x;
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var movementY = pointer.y - pointerOld.y;
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if ( state === STATE.ROTATE ) {
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scope.rotate( new THREE.Vector3( - movementX * 0.005, - movementY * 0.005, 0 ) );
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} else if ( state === STATE.ZOOM ) {
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scope.zoom( new THREE.Vector3( 0, 0, movementY ) );
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} else if ( state === STATE.PAN ) {
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scope.pan( new THREE.Vector3( - movementX, movementY, 0 ) );
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}
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pointerOld.set( event.clientX, event.clientY );
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}
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function onMouseUp( event ) {
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domElement.removeEventListener( 'mousemove', onMouseMove, false );
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domElement.removeEventListener( 'mouseup', onMouseUp, false );
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domElement.removeEventListener( 'mouseout', onMouseUp, false );
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domElement.removeEventListener( 'dblclick', onMouseUp, false );
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state = STATE.NONE;
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}
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function onMouseWheel( event ) {
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event.preventDefault();
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// if ( scope.enabled === false ) return;
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var delta = 0;
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if ( event.wheelDelta ) { // WebKit / Opera / Explorer 9
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delta = - event.wheelDelta;
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} else if ( event.detail ) { // Firefox
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delta = event.detail * 10;
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}
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scope.zoom( new THREE.Vector3( 0, 0, delta ) );
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}
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domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false );
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domElement.addEventListener( 'mousedown', onMouseDown, false );
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domElement.addEventListener( 'mousewheel', onMouseWheel, false );
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domElement.addEventListener( 'DOMMouseScroll', onMouseWheel, false ); // firefox
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// touch
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var touch = new THREE.Vector3();
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var touches = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];
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var prevTouches = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];
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var prevDistance = null;
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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:
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touches[ 0 ].set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY, 0 );
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touches[ 1 ].set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY, 0 );
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break;
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case 2:
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touches[ 0 ].set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY, 0 );
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touches[ 1 ].set( event.touches[ 1 ].pageX, event.touches[ 1 ].pageY, 0 );
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prevDistance = touches[ 0 ].distanceTo( touches[ 1 ] );
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break;
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}
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prevTouches[ 0 ].copy( touches[ 0 ] );
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prevTouches[ 1 ].copy( touches[ 1 ] );
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}
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function touchMove( event ) {
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if ( scope.enabled === false ) return;
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event.preventDefault();
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event.stopPropagation();
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var getClosest = function( touch, touches ) {
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var closest = touches[ 0 ];
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for ( var i in touches ) {
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if ( closest.distanceTo(touch) > touches[ i ].distanceTo(touch) ) closest = touches[ i ];
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}
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return closest;
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}
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switch ( event.touches.length ) {
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case 1:
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touches[ 0 ].set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY, 0 );
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touches[ 1 ].set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY, 0 );
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scope.rotate( touches[ 0 ].sub( getClosest( touches[ 0 ], prevTouches ) ).multiplyScalar( - 0.005 ) );
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break;
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case 2:
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touches[ 0 ].set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY, 0 );
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touches[ 1 ].set( event.touches[ 1 ].pageX, event.touches[ 1 ].pageY, 0 );
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distance = touches[ 0 ].distanceTo( touches[ 1 ] );
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scope.zoom( new THREE.Vector3( 0, 0, prevDistance - distance ) );
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prevDistance = distance;
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var offset0 = touches[ 0 ].clone().sub( getClosest( touches[ 0 ], prevTouches ) );
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var offset1 = touches[ 1 ].clone().sub( getClosest( touches[ 1 ], prevTouches ) );
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offset0.x = -offset0.x;
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offset1.x = -offset1.x;
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scope.pan( offset0.add( offset1 ).multiplyScalar( 0.5 ) );
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break;
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}
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prevTouches[ 0 ].copy( touches[ 0 ] );
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prevTouches[ 1 ].copy( touches[ 1 ] );
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}
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domElement.addEventListener( 'touchstart', touchStart, false );
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domElement.addEventListener( 'touchmove', touchMove, false );
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};
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THREE.EditorControls.prototype = Object.create( THREE.EventDispatcher.prototype );
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THREE.EditorControls.prototype.constructor = THREE.EditorControls;
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