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3216 lines
78 KiB
3216 lines
78 KiB
import {
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GridHelper,
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EllipseCurve,
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BufferGeometry,
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Line,
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LineBasicMaterial,
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Raycaster,
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Group,
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Box3,
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Sphere,
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Quaternion,
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Vector2,
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Vector3,
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Matrix4,
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MathUtils,
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EventDispatcher
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} from 'three';
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//trackball state
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const STATE = {
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IDLE: Symbol(),
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ROTATE: Symbol(),
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PAN: Symbol(),
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SCALE: Symbol(),
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FOV: Symbol(),
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FOCUS: Symbol(),
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ZROTATE: Symbol(),
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TOUCH_MULTI: Symbol(),
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ANIMATION_FOCUS: Symbol(),
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ANIMATION_ROTATE: Symbol()
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};
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const INPUT = {
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NONE: Symbol(),
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ONE_FINGER: Symbol(),
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ONE_FINGER_SWITCHED: Symbol(),
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TWO_FINGER: Symbol(),
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MULT_FINGER: Symbol(),
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CURSOR: Symbol()
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};
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//cursor center coordinates
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const _center = {
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x: 0,
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y: 0
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};
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//transformation matrices for gizmos and camera
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const _transformation = {
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camera: new Matrix4(),
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gizmos: new Matrix4()
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};
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//events
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const _changeEvent = { type: 'change' };
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const _startEvent = { type: 'start' };
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const _endEvent = { type: 'end' };
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const _raycaster = new Raycaster();
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const _offset = new Vector3();
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const _gizmoMatrixStateTemp = new Matrix4();
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const _cameraMatrixStateTemp = new Matrix4();
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const _scalePointTemp = new Vector3();
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/**
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*
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* @param {Camera} camera Virtual camera used in the scene
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* @param {HTMLElement} domElement Renderer's dom element
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* @param {Scene} scene The scene to be rendered
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*/
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class ArcballControls extends EventDispatcher {
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constructor( camera, domElement, scene = null ) {
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super();
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this.camera = null;
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this.domElement = domElement;
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this.scene = scene;
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this.target = new Vector3();
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this._currentTarget = new Vector3();
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this.radiusFactor = 0.67;
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this.mouseActions = [];
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this._mouseOp = null;
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//global vectors and matrices that are used in some operations to avoid creating new objects every time (e.g. every time cursor moves)
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this._v2_1 = new Vector2();
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this._v3_1 = new Vector3();
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this._v3_2 = new Vector3();
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this._m4_1 = new Matrix4();
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this._m4_2 = new Matrix4();
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this._quat = new Quaternion();
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//transformation matrices
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this._translationMatrix = new Matrix4(); //matrix for translation operation
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this._rotationMatrix = new Matrix4(); //matrix for rotation operation
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this._scaleMatrix = new Matrix4(); //matrix for scaling operation
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this._rotationAxis = new Vector3(); //axis for rotate operation
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//camera state
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this._cameraMatrixState = new Matrix4();
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this._cameraProjectionState = new Matrix4();
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this._fovState = 1;
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this._upState = new Vector3();
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this._zoomState = 1;
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this._nearPos = 0;
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this._farPos = 0;
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this._gizmoMatrixState = new Matrix4();
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//initial values
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this._up0 = new Vector3();
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this._zoom0 = 1;
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this._fov0 = 0;
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this._initialNear = 0;
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this._nearPos0 = 0;
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this._initialFar = 0;
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this._farPos0 = 0;
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this._cameraMatrixState0 = new Matrix4();
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this._gizmoMatrixState0 = new Matrix4();
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//pointers array
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this._button = - 1;
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this._touchStart = [];
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this._touchCurrent = [];
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this._input = INPUT.NONE;
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//two fingers touch interaction
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this._switchSensibility = 32; //minimum movement to be performed to fire single pan start after the second finger has been released
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this._startFingerDistance = 0; //distance between two fingers
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this._currentFingerDistance = 0;
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this._startFingerRotation = 0; //amount of rotation performed with two fingers
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this._currentFingerRotation = 0;
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//double tap
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this._devPxRatio = 0;
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this._downValid = true;
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this._nclicks = 0;
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this._downEvents = [];
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this._downStart = 0; //pointerDown time
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this._clickStart = 0; //first click time
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this._maxDownTime = 250;
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this._maxInterval = 300;
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this._posThreshold = 24;
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this._movementThreshold = 24;
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//cursor positions
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this._currentCursorPosition = new Vector3();
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this._startCursorPosition = new Vector3();
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//grid
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this._grid = null; //grid to be visualized during pan operation
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this._gridPosition = new Vector3();
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//gizmos
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this._gizmos = new Group();
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this._curvePts = 128;
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//animations
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this._timeStart = - 1; //initial time
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this._animationId = - 1;
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//focus animation
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this.focusAnimationTime = 500; //duration of focus animation in ms
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//rotate animation
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this._timePrev = 0; //time at which previous rotate operation has been detected
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this._timeCurrent = 0; //time at which current rotate operation has been detected
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this._anglePrev = 0; //angle of previous rotation
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this._angleCurrent = 0; //angle of current rotation
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this._cursorPosPrev = new Vector3(); //cursor position when previous rotate operation has been detected
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this._cursorPosCurr = new Vector3();//cursor position when current rotate operation has been detected
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this._wPrev = 0; //angular velocity of the previous rotate operation
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this._wCurr = 0; //angular velocity of the current rotate operation
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//parameters
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this.adjustNearFar = false;
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this.scaleFactor = 1.1; //zoom/distance multiplier
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this.dampingFactor = 25;
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this.wMax = 20; //maximum angular velocity allowed
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this.enableAnimations = true; //if animations should be performed
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this.enableGrid = false; //if grid should be showed during pan operation
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this.cursorZoom = false; //if wheel zoom should be cursor centered
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this.minFov = 5;
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this.maxFov = 90;
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this.enabled = true;
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this.enablePan = true;
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this.enableRotate = true;
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this.enableZoom = true;
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this.enableGizmos = true;
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this.minDistance = 0;
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this.maxDistance = Infinity;
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this.minZoom = 0;
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this.maxZoom = Infinity;
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//trackball parameters
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this._tbRadius = 1;
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//FSA
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this._state = STATE.IDLE;
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this.setCamera( camera );
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if ( this.scene != null ) {
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this.scene.add( this._gizmos );
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}
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this.domElement.style.touchAction = 'none';
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this._devPxRatio = window.devicePixelRatio;
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this.initializeMouseActions();
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this.domElement.addEventListener( 'contextmenu', this.onContextMenu );
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this.domElement.addEventListener( 'wheel', this.onWheel );
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this.domElement.addEventListener( 'pointerdown', this.onPointerDown );
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this.domElement.addEventListener( 'pointercancel', this.onPointerCancel );
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window.addEventListener( 'resize', this.onWindowResize );
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}
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//listeners
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onWindowResize = () => {
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const scale = ( this._gizmos.scale.x + this._gizmos.scale.y + this._gizmos.scale.z ) / 3;
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this._tbRadius = this.calculateTbRadius( this.camera );
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const newRadius = this._tbRadius / scale;
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const curve = new EllipseCurve( 0, 0, newRadius, newRadius );
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const points = curve.getPoints( this._curvePts );
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const curveGeometry = new BufferGeometry().setFromPoints( points );
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for ( const gizmo in this._gizmos.children ) {
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this._gizmos.children[ gizmo ].geometry = curveGeometry;
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}
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this.dispatchEvent( _changeEvent );
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};
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onContextMenu = ( event ) => {
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if ( ! this.enabled ) {
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return;
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}
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for ( let i = 0; i < this.mouseActions.length; i ++ ) {
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if ( this.mouseActions[ i ].mouse == 2 ) {
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//prevent only if button 2 is actually used
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event.preventDefault();
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break;
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}
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}
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};
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onPointerCancel = () => {
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this._touchStart.splice( 0, this._touchStart.length );
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this._touchCurrent.splice( 0, this._touchCurrent.length );
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this._input = INPUT.NONE;
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};
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onPointerDown = ( event ) => {
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if ( event.button == 0 && event.isPrimary ) {
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this._downValid = true;
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this._downEvents.push( event );
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this._downStart = performance.now();
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} else {
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this._downValid = false;
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}
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if ( event.pointerType == 'touch' && this._input != INPUT.CURSOR ) {
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this._touchStart.push( event );
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this._touchCurrent.push( event );
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switch ( this._input ) {
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case INPUT.NONE:
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//singleStart
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this._input = INPUT.ONE_FINGER;
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this.onSinglePanStart( event, 'ROTATE' );
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window.addEventListener( 'pointermove', this.onPointerMove );
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window.addEventListener( 'pointerup', this.onPointerUp );
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break;
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case INPUT.ONE_FINGER:
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case INPUT.ONE_FINGER_SWITCHED:
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//doubleStart
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this._input = INPUT.TWO_FINGER;
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this.onRotateStart();
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this.onPinchStart();
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this.onDoublePanStart();
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break;
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case INPUT.TWO_FINGER:
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//multipleStart
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this._input = INPUT.MULT_FINGER;
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this.onTriplePanStart( event );
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break;
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}
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} else if ( event.pointerType != 'touch' && this._input == INPUT.NONE ) {
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let modifier = null;
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if ( event.ctrlKey || event.metaKey ) {
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modifier = 'CTRL';
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} else if ( event.shiftKey ) {
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modifier = 'SHIFT';
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}
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this._mouseOp = this.getOpFromAction( event.button, modifier );
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if ( this._mouseOp != null ) {
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window.addEventListener( 'pointermove', this.onPointerMove );
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window.addEventListener( 'pointerup', this.onPointerUp );
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//singleStart
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this._input = INPUT.CURSOR;
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this._button = event.button;
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this.onSinglePanStart( event, this._mouseOp );
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}
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}
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};
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onPointerMove = ( event ) => {
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if ( event.pointerType == 'touch' && this._input != INPUT.CURSOR ) {
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switch ( this._input ) {
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case INPUT.ONE_FINGER:
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//singleMove
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this.updateTouchEvent( event );
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this.onSinglePanMove( event, STATE.ROTATE );
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break;
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case INPUT.ONE_FINGER_SWITCHED:
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const movement = this.calculatePointersDistance( this._touchCurrent[ 0 ], event ) * this._devPxRatio;
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if ( movement >= this._switchSensibility ) {
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//singleMove
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this._input = INPUT.ONE_FINGER;
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this.updateTouchEvent( event );
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this.onSinglePanStart( event, 'ROTATE' );
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break;
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}
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break;
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case INPUT.TWO_FINGER:
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//rotate/pan/pinchMove
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this.updateTouchEvent( event );
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this.onRotateMove();
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this.onPinchMove();
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this.onDoublePanMove();
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break;
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case INPUT.MULT_FINGER:
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//multMove
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this.updateTouchEvent( event );
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this.onTriplePanMove( event );
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break;
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}
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} else if ( event.pointerType != 'touch' && this._input == INPUT.CURSOR ) {
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let modifier = null;
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if ( event.ctrlKey || event.metaKey ) {
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modifier = 'CTRL';
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} else if ( event.shiftKey ) {
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modifier = 'SHIFT';
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}
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const mouseOpState = this.getOpStateFromAction( this._button, modifier );
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if ( mouseOpState != null ) {
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this.onSinglePanMove( event, mouseOpState );
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}
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}
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//checkDistance
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if ( this._downValid ) {
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const movement = this.calculatePointersDistance( this._downEvents[ this._downEvents.length - 1 ], event ) * this._devPxRatio;
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if ( movement > this._movementThreshold ) {
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this._downValid = false;
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}
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}
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};
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onPointerUp = ( event ) => {
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if ( event.pointerType == 'touch' && this._input != INPUT.CURSOR ) {
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const nTouch = this._touchCurrent.length;
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for ( let i = 0; i < nTouch; i ++ ) {
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if ( this._touchCurrent[ i ].pointerId == event.pointerId ) {
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this._touchCurrent.splice( i, 1 );
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this._touchStart.splice( i, 1 );
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break;
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}
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}
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switch ( this._input ) {
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case INPUT.ONE_FINGER:
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case INPUT.ONE_FINGER_SWITCHED:
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//singleEnd
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window.removeEventListener( 'pointermove', this.onPointerMove );
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window.removeEventListener( 'pointerup', this.onPointerUp );
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this._input = INPUT.NONE;
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this.onSinglePanEnd();
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break;
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case INPUT.TWO_FINGER:
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//doubleEnd
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this.onDoublePanEnd( event );
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this.onPinchEnd( event );
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this.onRotateEnd( event );
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//switching to singleStart
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this._input = INPUT.ONE_FINGER_SWITCHED;
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break;
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case INPUT.MULT_FINGER:
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if ( this._touchCurrent.length == 0 ) {
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window.removeEventListener( 'pointermove', this.onPointerMove );
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window.removeEventListener( 'pointerup', this.onPointerUp );
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//multCancel
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this._input = INPUT.NONE;
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this.onTriplePanEnd();
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}
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break;
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}
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} else if ( event.pointerType != 'touch' && this._input == INPUT.CURSOR ) {
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window.removeEventListener( 'pointermove', this.onPointerMove );
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window.removeEventListener( 'pointerup', this.onPointerUp );
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this._input = INPUT.NONE;
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this.onSinglePanEnd();
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this._button = - 1;
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}
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if ( event.isPrimary ) {
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if ( this._downValid ) {
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const downTime = event.timeStamp - this._downEvents[ this._downEvents.length - 1 ].timeStamp;
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if ( downTime <= this._maxDownTime ) {
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if ( this._nclicks == 0 ) {
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//first valid click detected
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this._nclicks = 1;
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this._clickStart = performance.now();
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} else {
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const clickInterval = event.timeStamp - this._clickStart;
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const movement = this.calculatePointersDistance( this._downEvents[ 1 ], this._downEvents[ 0 ] ) * this._devPxRatio;
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if ( clickInterval <= this._maxInterval && movement <= this._posThreshold ) {
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//second valid click detected
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//fire double tap and reset values
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this._nclicks = 0;
|
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this._downEvents.splice( 0, this._downEvents.length );
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this.onDoubleTap( event );
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} else {
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//new 'first click'
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this._nclicks = 1;
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this._downEvents.shift();
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this._clickStart = performance.now();
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}
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}
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} else {
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this._downValid = false;
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this._nclicks = 0;
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this._downEvents.splice( 0, this._downEvents.length );
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}
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} else {
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this._nclicks = 0;
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this._downEvents.splice( 0, this._downEvents.length );
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|
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}
|
|
|
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}
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|
|
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};
|
|
|
|
onWheel = ( event ) => {
|
|
|
|
if ( this.enabled && this.enableZoom ) {
|
|
|
|
let modifier = null;
|
|
|
|
if ( event.ctrlKey || event.metaKey ) {
|
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|
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modifier = 'CTRL';
|
|
|
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} else if ( event.shiftKey ) {
|
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|
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modifier = 'SHIFT';
|
|
|
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}
|
|
|
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const mouseOp = this.getOpFromAction( 'WHEEL', modifier );
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|
|
|
if ( mouseOp != null ) {
|
|
|
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event.preventDefault();
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
const notchDeltaY = 125; //distance of one notch of mouse wheel
|
|
let sgn = event.deltaY / notchDeltaY;
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|
|
let size = 1;
|
|
|
|
if ( sgn > 0 ) {
|
|
|
|
size = 1 / this.scaleFactor;
|
|
|
|
} else if ( sgn < 0 ) {
|
|
|
|
size = this.scaleFactor;
|
|
|
|
}
|
|
|
|
switch ( mouseOp ) {
|
|
|
|
case 'ZOOM':
|
|
|
|
this.updateTbState( STATE.SCALE, true );
|
|
|
|
if ( sgn > 0 ) {
|
|
|
|
size = 1 / ( Math.pow( this.scaleFactor, sgn ) );
|
|
|
|
} else if ( sgn < 0 ) {
|
|
|
|
size = Math.pow( this.scaleFactor, - sgn );
|
|
|
|
}
|
|
|
|
if ( this.cursorZoom && this.enablePan ) {
|
|
|
|
let scalePoint;
|
|
|
|
if ( this.camera.isOrthographicCamera ) {
|
|
|
|
scalePoint = this.unprojectOnTbPlane( this.camera, event.clientX, event.clientY, this.domElement ).applyQuaternion( this.camera.quaternion ).multiplyScalar( 1 / this.camera.zoom ).add( this._gizmos.position );
|
|
|
|
} else if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
scalePoint = this.unprojectOnTbPlane( this.camera, event.clientX, event.clientY, this.domElement ).applyQuaternion( this.camera.quaternion ).add( this._gizmos.position );
|
|
|
|
}
|
|
|
|
this.applyTransformMatrix( this.scale( size, scalePoint ) );
|
|
|
|
} else {
|
|
|
|
this.applyTransformMatrix( this.scale( size, this._gizmos.position ) );
|
|
|
|
}
|
|
|
|
if ( this._grid != null ) {
|
|
|
|
this.disposeGrid();
|
|
this.drawGrid();
|
|
|
|
}
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
this.dispatchEvent( _endEvent );
|
|
|
|
break;
|
|
|
|
case 'FOV':
|
|
|
|
if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
this.updateTbState( STATE.FOV, true );
|
|
|
|
|
|
//Vertigo effect
|
|
|
|
// fov / 2
|
|
// |\
|
|
// | \
|
|
// | \
|
|
// x | \
|
|
// | \
|
|
// | \
|
|
// | _ _ _\
|
|
// y
|
|
|
|
//check for iOs shift shortcut
|
|
if ( event.deltaX != 0 ) {
|
|
|
|
sgn = event.deltaX / notchDeltaY;
|
|
|
|
size = 1;
|
|
|
|
if ( sgn > 0 ) {
|
|
|
|
size = 1 / ( Math.pow( this.scaleFactor, sgn ) );
|
|
|
|
} else if ( sgn < 0 ) {
|
|
|
|
size = Math.pow( this.scaleFactor, - sgn );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
this._v3_1.setFromMatrixPosition( this._cameraMatrixState );
|
|
const x = this._v3_1.distanceTo( this._gizmos.position );
|
|
let xNew = x / size; //distance between camera and gizmos if scale(size, scalepoint) would be performed
|
|
|
|
//check min and max distance
|
|
xNew = MathUtils.clamp( xNew, this.minDistance, this.maxDistance );
|
|
|
|
const y = x * Math.tan( MathUtils.DEG2RAD * this.camera.fov * 0.5 );
|
|
|
|
//calculate new fov
|
|
let newFov = MathUtils.RAD2DEG * ( Math.atan( y / xNew ) * 2 );
|
|
|
|
//check min and max fov
|
|
if ( newFov > this.maxFov ) {
|
|
|
|
newFov = this.maxFov;
|
|
|
|
} else if ( newFov < this.minFov ) {
|
|
|
|
newFov = this.minFov;
|
|
|
|
}
|
|
|
|
const newDistance = y / Math.tan( MathUtils.DEG2RAD * ( newFov / 2 ) );
|
|
size = x / newDistance;
|
|
|
|
this.setFov( newFov );
|
|
this.applyTransformMatrix( this.scale( size, this._gizmos.position, false ) );
|
|
|
|
}
|
|
|
|
if ( this._grid != null ) {
|
|
|
|
this.disposeGrid();
|
|
this.drawGrid();
|
|
|
|
}
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
this.dispatchEvent( _endEvent );
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onSinglePanStart = ( event, operation ) => {
|
|
|
|
if ( this.enabled ) {
|
|
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.setCenter( event.clientX, event.clientY );
|
|
|
|
switch ( operation ) {
|
|
|
|
case 'PAN':
|
|
|
|
if ( ! this.enablePan ) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if ( this._animationId != - 1 ) {
|
|
|
|
cancelAnimationFrame( this._animationId );
|
|
this._animationId = - 1;
|
|
this._timeStart = - 1;
|
|
|
|
this.activateGizmos( false );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
this.updateTbState( STATE.PAN, true );
|
|
this._startCursorPosition.copy( this.unprojectOnTbPlane( this.camera, _center.x, _center.y, this.domElement ) );
|
|
if ( this.enableGrid ) {
|
|
|
|
this.drawGrid();
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'ROTATE':
|
|
|
|
if ( ! this.enableRotate ) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if ( this._animationId != - 1 ) {
|
|
|
|
cancelAnimationFrame( this._animationId );
|
|
this._animationId = - 1;
|
|
this._timeStart = - 1;
|
|
|
|
}
|
|
|
|
this.updateTbState( STATE.ROTATE, true );
|
|
this._startCursorPosition.copy( this.unprojectOnTbSurface( this.camera, _center.x, _center.y, this.domElement, this._tbRadius ) );
|
|
this.activateGizmos( true );
|
|
if ( this.enableAnimations ) {
|
|
|
|
this._timePrev = this._timeCurrent = performance.now();
|
|
this._angleCurrent = this._anglePrev = 0;
|
|
this._cursorPosPrev.copy( this._startCursorPosition );
|
|
this._cursorPosCurr.copy( this._cursorPosPrev );
|
|
this._wCurr = 0;
|
|
this._wPrev = this._wCurr;
|
|
|
|
}
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
break;
|
|
|
|
case 'FOV':
|
|
|
|
if ( ! this.camera.isPerspectiveCamera || ! this.enableZoom ) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if ( this._animationId != - 1 ) {
|
|
|
|
cancelAnimationFrame( this._animationId );
|
|
this._animationId = - 1;
|
|
this._timeStart = - 1;
|
|
|
|
this.activateGizmos( false );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
this.updateTbState( STATE.FOV, true );
|
|
this._startCursorPosition.setY( this.getCursorNDC( _center.x, _center.y, this.domElement ).y * 0.5 );
|
|
this._currentCursorPosition.copy( this._startCursorPosition );
|
|
break;
|
|
|
|
case 'ZOOM':
|
|
|
|
if ( ! this.enableZoom ) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if ( this._animationId != - 1 ) {
|
|
|
|
cancelAnimationFrame( this._animationId );
|
|
this._animationId = - 1;
|
|
this._timeStart = - 1;
|
|
|
|
this.activateGizmos( false );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
this.updateTbState( STATE.SCALE, true );
|
|
this._startCursorPosition.setY( this.getCursorNDC( _center.x, _center.y, this.domElement ).y * 0.5 );
|
|
this._currentCursorPosition.copy( this._startCursorPosition );
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onSinglePanMove = ( event, opState ) => {
|
|
|
|
if ( this.enabled ) {
|
|
|
|
const restart = opState != this._state;
|
|
this.setCenter( event.clientX, event.clientY );
|
|
|
|
switch ( opState ) {
|
|
|
|
case STATE.PAN:
|
|
|
|
if ( this.enablePan ) {
|
|
|
|
if ( restart ) {
|
|
|
|
//switch to pan operation
|
|
|
|
this.dispatchEvent( _endEvent );
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.updateTbState( opState, true );
|
|
this._startCursorPosition.copy( this.unprojectOnTbPlane( this.camera, _center.x, _center.y, this.domElement ) );
|
|
if ( this.enableGrid ) {
|
|
|
|
this.drawGrid();
|
|
|
|
}
|
|
|
|
this.activateGizmos( false );
|
|
|
|
} else {
|
|
|
|
//continue with pan operation
|
|
this._currentCursorPosition.copy( this.unprojectOnTbPlane( this.camera, _center.x, _center.y, this.domElement ) );
|
|
this.applyTransformMatrix( this.pan( this._startCursorPosition, this._currentCursorPosition ) );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case STATE.ROTATE:
|
|
|
|
if ( this.enableRotate ) {
|
|
|
|
if ( restart ) {
|
|
|
|
//switch to rotate operation
|
|
|
|
this.dispatchEvent( _endEvent );
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.updateTbState( opState, true );
|
|
this._startCursorPosition.copy( this.unprojectOnTbSurface( this.camera, _center.x, _center.y, this.domElement, this._tbRadius ) );
|
|
|
|
if ( this.enableGrid ) {
|
|
|
|
this.disposeGrid();
|
|
|
|
}
|
|
|
|
this.activateGizmos( true );
|
|
|
|
} else {
|
|
|
|
//continue with rotate operation
|
|
this._currentCursorPosition.copy( this.unprojectOnTbSurface( this.camera, _center.x, _center.y, this.domElement, this._tbRadius ) );
|
|
|
|
const distance = this._startCursorPosition.distanceTo( this._currentCursorPosition );
|
|
const angle = this._startCursorPosition.angleTo( this._currentCursorPosition );
|
|
const amount = Math.max( distance / this._tbRadius, angle ); //effective rotation angle
|
|
|
|
this.applyTransformMatrix( this.rotate( this.calculateRotationAxis( this._startCursorPosition, this._currentCursorPosition ), amount ) );
|
|
|
|
if ( this.enableAnimations ) {
|
|
|
|
this._timePrev = this._timeCurrent;
|
|
this._timeCurrent = performance.now();
|
|
this._anglePrev = this._angleCurrent;
|
|
this._angleCurrent = amount;
|
|
this._cursorPosPrev.copy( this._cursorPosCurr );
|
|
this._cursorPosCurr.copy( this._currentCursorPosition );
|
|
this._wPrev = this._wCurr;
|
|
this._wCurr = this.calculateAngularSpeed( this._anglePrev, this._angleCurrent, this._timePrev, this._timeCurrent );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case STATE.SCALE:
|
|
|
|
if ( this.enableZoom ) {
|
|
|
|
if ( restart ) {
|
|
|
|
//switch to zoom operation
|
|
|
|
this.dispatchEvent( _endEvent );
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.updateTbState( opState, true );
|
|
this._startCursorPosition.setY( this.getCursorNDC( _center.x, _center.y, this.domElement ).y * 0.5 );
|
|
this._currentCursorPosition.copy( this._startCursorPosition );
|
|
|
|
if ( this.enableGrid ) {
|
|
|
|
this.disposeGrid();
|
|
|
|
}
|
|
|
|
this.activateGizmos( false );
|
|
|
|
} else {
|
|
|
|
//continue with zoom operation
|
|
const screenNotches = 8; //how many wheel notches corresponds to a full screen pan
|
|
this._currentCursorPosition.setY( this.getCursorNDC( _center.x, _center.y, this.domElement ).y * 0.5 );
|
|
|
|
const movement = this._currentCursorPosition.y - this._startCursorPosition.y;
|
|
|
|
let size = 1;
|
|
|
|
if ( movement < 0 ) {
|
|
|
|
size = 1 / ( Math.pow( this.scaleFactor, - movement * screenNotches ) );
|
|
|
|
} else if ( movement > 0 ) {
|
|
|
|
size = Math.pow( this.scaleFactor, movement * screenNotches );
|
|
|
|
}
|
|
|
|
this._v3_1.setFromMatrixPosition( this._gizmoMatrixState );
|
|
|
|
this.applyTransformMatrix( this.scale( size, this._v3_1 ) );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case STATE.FOV:
|
|
|
|
if ( this.enableZoom && this.camera.isPerspectiveCamera ) {
|
|
|
|
if ( restart ) {
|
|
|
|
//switch to fov operation
|
|
|
|
this.dispatchEvent( _endEvent );
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.updateTbState( opState, true );
|
|
this._startCursorPosition.setY( this.getCursorNDC( _center.x, _center.y, this.domElement ).y * 0.5 );
|
|
this._currentCursorPosition.copy( this._startCursorPosition );
|
|
|
|
if ( this.enableGrid ) {
|
|
|
|
this.disposeGrid();
|
|
|
|
}
|
|
|
|
this.activateGizmos( false );
|
|
|
|
} else {
|
|
|
|
//continue with fov operation
|
|
const screenNotches = 8; //how many wheel notches corresponds to a full screen pan
|
|
this._currentCursorPosition.setY( this.getCursorNDC( _center.x, _center.y, this.domElement ).y * 0.5 );
|
|
|
|
const movement = this._currentCursorPosition.y - this._startCursorPosition.y;
|
|
|
|
let size = 1;
|
|
|
|
if ( movement < 0 ) {
|
|
|
|
size = 1 / ( Math.pow( this.scaleFactor, - movement * screenNotches ) );
|
|
|
|
} else if ( movement > 0 ) {
|
|
|
|
size = Math.pow( this.scaleFactor, movement * screenNotches );
|
|
|
|
}
|
|
|
|
this._v3_1.setFromMatrixPosition( this._cameraMatrixState );
|
|
const x = this._v3_1.distanceTo( this._gizmos.position );
|
|
let xNew = x / size; //distance between camera and gizmos if scale(size, scalepoint) would be performed
|
|
|
|
//check min and max distance
|
|
xNew = MathUtils.clamp( xNew, this.minDistance, this.maxDistance );
|
|
|
|
const y = x * Math.tan( MathUtils.DEG2RAD * this._fovState * 0.5 );
|
|
|
|
//calculate new fov
|
|
let newFov = MathUtils.RAD2DEG * ( Math.atan( y / xNew ) * 2 );
|
|
|
|
//check min and max fov
|
|
newFov = MathUtils.clamp( newFov, this.minFov, this.maxFov );
|
|
|
|
const newDistance = y / Math.tan( MathUtils.DEG2RAD * ( newFov / 2 ) );
|
|
size = x / newDistance;
|
|
this._v3_2.setFromMatrixPosition( this._gizmoMatrixState );
|
|
|
|
this.setFov( newFov );
|
|
this.applyTransformMatrix( this.scale( size, this._v3_2, false ) );
|
|
|
|
//adjusting distance
|
|
_offset.copy( this._gizmos.position ).sub( this.camera.position ).normalize().multiplyScalar( newDistance / x );
|
|
this._m4_1.makeTranslation( _offset.x, _offset.y, _offset.z );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onSinglePanEnd = () => {
|
|
|
|
if ( this._state == STATE.ROTATE ) {
|
|
|
|
|
|
if ( ! this.enableRotate ) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if ( this.enableAnimations ) {
|
|
|
|
//perform rotation animation
|
|
const deltaTime = ( performance.now() - this._timeCurrent );
|
|
if ( deltaTime < 120 ) {
|
|
|
|
const w = Math.abs( ( this._wPrev + this._wCurr ) / 2 );
|
|
|
|
const self = this;
|
|
this._animationId = window.requestAnimationFrame( function ( t ) {
|
|
|
|
self.updateTbState( STATE.ANIMATION_ROTATE, true );
|
|
const rotationAxis = self.calculateRotationAxis( self._cursorPosPrev, self._cursorPosCurr );
|
|
|
|
self.onRotationAnim( t, rotationAxis, Math.min( w, self.wMax ) );
|
|
|
|
} );
|
|
|
|
} else {
|
|
|
|
//cursor has been standing still for over 120 ms since last movement
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.activateGizmos( false );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.activateGizmos( false );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
} else if ( this._state == STATE.PAN || this._state == STATE.IDLE ) {
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
|
|
if ( this.enableGrid ) {
|
|
|
|
this.disposeGrid();
|
|
|
|
}
|
|
|
|
this.activateGizmos( false );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
|
|
}
|
|
|
|
this.dispatchEvent( _endEvent );
|
|
|
|
};
|
|
|
|
onDoubleTap = ( event ) => {
|
|
|
|
if ( this.enabled && this.enablePan && this.scene != null ) {
|
|
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.setCenter( event.clientX, event.clientY );
|
|
const hitP = this.unprojectOnObj( this.getCursorNDC( _center.x, _center.y, this.domElement ), this.camera );
|
|
|
|
if ( hitP != null && this.enableAnimations ) {
|
|
|
|
const self = this;
|
|
if ( this._animationId != - 1 ) {
|
|
|
|
window.cancelAnimationFrame( this._animationId );
|
|
|
|
}
|
|
|
|
this._timeStart = - 1;
|
|
this._animationId = window.requestAnimationFrame( function ( t ) {
|
|
|
|
self.updateTbState( STATE.ANIMATION_FOCUS, true );
|
|
self.onFocusAnim( t, hitP, self._cameraMatrixState, self._gizmoMatrixState );
|
|
|
|
} );
|
|
|
|
} else if ( hitP != null && ! this.enableAnimations ) {
|
|
|
|
this.updateTbState( STATE.FOCUS, true );
|
|
this.focus( hitP, this.scaleFactor );
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
this.dispatchEvent( _endEvent );
|
|
|
|
};
|
|
|
|
onDoublePanStart = () => {
|
|
|
|
if ( this.enabled && this.enablePan ) {
|
|
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.updateTbState( STATE.PAN, true );
|
|
|
|
this.setCenter( ( this._touchCurrent[ 0 ].clientX + this._touchCurrent[ 1 ].clientX ) / 2, ( this._touchCurrent[ 0 ].clientY + this._touchCurrent[ 1 ].clientY ) / 2 );
|
|
this._startCursorPosition.copy( this.unprojectOnTbPlane( this.camera, _center.x, _center.y, this.domElement, true ) );
|
|
this._currentCursorPosition.copy( this._startCursorPosition );
|
|
|
|
this.activateGizmos( false );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onDoublePanMove = () => {
|
|
|
|
if ( this.enabled && this.enablePan ) {
|
|
|
|
this.setCenter( ( this._touchCurrent[ 0 ].clientX + this._touchCurrent[ 1 ].clientX ) / 2, ( this._touchCurrent[ 0 ].clientY + this._touchCurrent[ 1 ].clientY ) / 2 );
|
|
|
|
if ( this._state != STATE.PAN ) {
|
|
|
|
this.updateTbState( STATE.PAN, true );
|
|
this._startCursorPosition.copy( this._currentCursorPosition );
|
|
|
|
}
|
|
|
|
this._currentCursorPosition.copy( this.unprojectOnTbPlane( this.camera, _center.x, _center.y, this.domElement, true ) );
|
|
this.applyTransformMatrix( this.pan( this._startCursorPosition, this._currentCursorPosition, true ) );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onDoublePanEnd = () => {
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.dispatchEvent( _endEvent );
|
|
|
|
};
|
|
|
|
|
|
onRotateStart = () => {
|
|
|
|
if ( this.enabled && this.enableRotate ) {
|
|
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.updateTbState( STATE.ZROTATE, true );
|
|
|
|
//this._startFingerRotation = event.rotation;
|
|
|
|
this._startFingerRotation = this.getAngle( this._touchCurrent[ 1 ], this._touchCurrent[ 0 ] ) + this.getAngle( this._touchStart[ 1 ], this._touchStart[ 0 ] );
|
|
this._currentFingerRotation = this._startFingerRotation;
|
|
|
|
this.camera.getWorldDirection( this._rotationAxis ); //rotation axis
|
|
|
|
if ( ! this.enablePan && ! this.enableZoom ) {
|
|
|
|
this.activateGizmos( true );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onRotateMove = () => {
|
|
|
|
if ( this.enabled && this.enableRotate ) {
|
|
|
|
this.setCenter( ( this._touchCurrent[ 0 ].clientX + this._touchCurrent[ 1 ].clientX ) / 2, ( this._touchCurrent[ 0 ].clientY + this._touchCurrent[ 1 ].clientY ) / 2 );
|
|
let rotationPoint;
|
|
|
|
if ( this._state != STATE.ZROTATE ) {
|
|
|
|
this.updateTbState( STATE.ZROTATE, true );
|
|
this._startFingerRotation = this._currentFingerRotation;
|
|
|
|
}
|
|
|
|
//this._currentFingerRotation = event.rotation;
|
|
this._currentFingerRotation = this.getAngle( this._touchCurrent[ 1 ], this._touchCurrent[ 0 ] ) + this.getAngle( this._touchStart[ 1 ], this._touchStart[ 0 ] );
|
|
|
|
if ( ! this.enablePan ) {
|
|
|
|
rotationPoint = new Vector3().setFromMatrixPosition( this._gizmoMatrixState );
|
|
|
|
} else {
|
|
|
|
this._v3_2.setFromMatrixPosition( this._gizmoMatrixState );
|
|
rotationPoint = this.unprojectOnTbPlane( this.camera, _center.x, _center.y, this.domElement ).applyQuaternion( this.camera.quaternion ).multiplyScalar( 1 / this.camera.zoom ).add( this._v3_2 );
|
|
|
|
}
|
|
|
|
const amount = MathUtils.DEG2RAD * ( this._startFingerRotation - this._currentFingerRotation );
|
|
|
|
this.applyTransformMatrix( this.zRotate( rotationPoint, amount ) );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onRotateEnd = () => {
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.activateGizmos( false );
|
|
this.dispatchEvent( _endEvent );
|
|
|
|
};
|
|
|
|
onPinchStart = () => {
|
|
|
|
if ( this.enabled && this.enableZoom ) {
|
|
|
|
this.dispatchEvent( _startEvent );
|
|
this.updateTbState( STATE.SCALE, true );
|
|
|
|
this._startFingerDistance = this.calculatePointersDistance( this._touchCurrent[ 0 ], this._touchCurrent[ 1 ] );
|
|
this._currentFingerDistance = this._startFingerDistance;
|
|
|
|
this.activateGizmos( false );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onPinchMove = () => {
|
|
|
|
if ( this.enabled && this.enableZoom ) {
|
|
|
|
this.setCenter( ( this._touchCurrent[ 0 ].clientX + this._touchCurrent[ 1 ].clientX ) / 2, ( this._touchCurrent[ 0 ].clientY + this._touchCurrent[ 1 ].clientY ) / 2 );
|
|
const minDistance = 12; //minimum distance between fingers (in css pixels)
|
|
|
|
if ( this._state != STATE.SCALE ) {
|
|
|
|
this._startFingerDistance = this._currentFingerDistance;
|
|
this.updateTbState( STATE.SCALE, true );
|
|
|
|
}
|
|
|
|
this._currentFingerDistance = Math.max( this.calculatePointersDistance( this._touchCurrent[ 0 ], this._touchCurrent[ 1 ] ), minDistance * this._devPxRatio );
|
|
const amount = this._currentFingerDistance / this._startFingerDistance;
|
|
|
|
let scalePoint;
|
|
|
|
if ( ! this.enablePan ) {
|
|
|
|
scalePoint = this._gizmos.position;
|
|
|
|
} else {
|
|
|
|
if ( this.camera.isOrthographicCamera ) {
|
|
|
|
scalePoint = this.unprojectOnTbPlane( this.camera, _center.x, _center.y, this.domElement )
|
|
.applyQuaternion( this.camera.quaternion )
|
|
.multiplyScalar( 1 / this.camera.zoom )
|
|
.add( this._gizmos.position );
|
|
|
|
} else if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
scalePoint = this.unprojectOnTbPlane( this.camera, _center.x, _center.y, this.domElement )
|
|
.applyQuaternion( this.camera.quaternion )
|
|
.add( this._gizmos.position );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
this.applyTransformMatrix( this.scale( amount, scalePoint ) );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onPinchEnd = () => {
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.dispatchEvent( _endEvent );
|
|
|
|
};
|
|
|
|
onTriplePanStart = () => {
|
|
|
|
if ( this.enabled && this.enableZoom ) {
|
|
|
|
this.dispatchEvent( _startEvent );
|
|
|
|
this.updateTbState( STATE.SCALE, true );
|
|
|
|
//const center = event.center;
|
|
let clientX = 0;
|
|
let clientY = 0;
|
|
const nFingers = this._touchCurrent.length;
|
|
|
|
for ( let i = 0; i < nFingers; i ++ ) {
|
|
|
|
clientX += this._touchCurrent[ i ].clientX;
|
|
clientY += this._touchCurrent[ i ].clientY;
|
|
|
|
}
|
|
|
|
this.setCenter( clientX / nFingers, clientY / nFingers );
|
|
|
|
this._startCursorPosition.setY( this.getCursorNDC( _center.x, _center.y, this.domElement ).y * 0.5 );
|
|
this._currentCursorPosition.copy( this._startCursorPosition );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onTriplePanMove = () => {
|
|
|
|
if ( this.enabled && this.enableZoom ) {
|
|
|
|
// fov / 2
|
|
// |\
|
|
// | \
|
|
// | \
|
|
// x | \
|
|
// | \
|
|
// | \
|
|
// | _ _ _\
|
|
// y
|
|
|
|
//const center = event.center;
|
|
let clientX = 0;
|
|
let clientY = 0;
|
|
const nFingers = this._touchCurrent.length;
|
|
|
|
for ( let i = 0; i < nFingers; i ++ ) {
|
|
|
|
clientX += this._touchCurrent[ i ].clientX;
|
|
clientY += this._touchCurrent[ i ].clientY;
|
|
|
|
}
|
|
|
|
this.setCenter( clientX / nFingers, clientY / nFingers );
|
|
|
|
const screenNotches = 8; //how many wheel notches corresponds to a full screen pan
|
|
this._currentCursorPosition.setY( this.getCursorNDC( _center.x, _center.y, this.domElement ).y * 0.5 );
|
|
|
|
const movement = this._currentCursorPosition.y - this._startCursorPosition.y;
|
|
|
|
let size = 1;
|
|
|
|
if ( movement < 0 ) {
|
|
|
|
size = 1 / ( Math.pow( this.scaleFactor, - movement * screenNotches ) );
|
|
|
|
} else if ( movement > 0 ) {
|
|
|
|
size = Math.pow( this.scaleFactor, movement * screenNotches );
|
|
|
|
}
|
|
|
|
this._v3_1.setFromMatrixPosition( this._cameraMatrixState );
|
|
const x = this._v3_1.distanceTo( this._gizmos.position );
|
|
let xNew = x / size; //distance between camera and gizmos if scale(size, scalepoint) would be performed
|
|
|
|
//check min and max distance
|
|
xNew = MathUtils.clamp( xNew, this.minDistance, this.maxDistance );
|
|
|
|
const y = x * Math.tan( MathUtils.DEG2RAD * this._fovState * 0.5 );
|
|
|
|
//calculate new fov
|
|
let newFov = MathUtils.RAD2DEG * ( Math.atan( y / xNew ) * 2 );
|
|
|
|
//check min and max fov
|
|
newFov = MathUtils.clamp( newFov, this.minFov, this.maxFov );
|
|
|
|
const newDistance = y / Math.tan( MathUtils.DEG2RAD * ( newFov / 2 ) );
|
|
size = x / newDistance;
|
|
this._v3_2.setFromMatrixPosition( this._gizmoMatrixState );
|
|
|
|
this.setFov( newFov );
|
|
this.applyTransformMatrix( this.scale( size, this._v3_2, false ) );
|
|
|
|
//adjusting distance
|
|
_offset.copy( this._gizmos.position ).sub( this.camera.position ).normalize().multiplyScalar( newDistance / x );
|
|
this._m4_1.makeTranslation( _offset.x, _offset.y, _offset.z );
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
onTriplePanEnd = () => {
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.dispatchEvent( _endEvent );
|
|
//this.dispatchEvent( _changeEvent );
|
|
|
|
};
|
|
|
|
/**
|
|
* Set _center's x/y coordinates
|
|
* @param {Number} clientX
|
|
* @param {Number} clientY
|
|
*/
|
|
setCenter = ( clientX, clientY ) => {
|
|
|
|
_center.x = clientX;
|
|
_center.y = clientY;
|
|
|
|
};
|
|
|
|
/**
|
|
* Set default mouse actions
|
|
*/
|
|
initializeMouseActions = () => {
|
|
|
|
this.setMouseAction( 'PAN', 0, 'CTRL' );
|
|
this.setMouseAction( 'PAN', 2 );
|
|
|
|
this.setMouseAction( 'ROTATE', 0 );
|
|
|
|
this.setMouseAction( 'ZOOM', 'WHEEL' );
|
|
this.setMouseAction( 'ZOOM', 1 );
|
|
|
|
this.setMouseAction( 'FOV', 'WHEEL', 'SHIFT' );
|
|
this.setMouseAction( 'FOV', 1, 'SHIFT' );
|
|
|
|
|
|
};
|
|
|
|
/**
|
|
* Compare two mouse actions
|
|
* @param {Object} action1
|
|
* @param {Object} action2
|
|
* @returns {Boolean} True if action1 and action 2 are the same mouse action, false otherwise
|
|
*/
|
|
compareMouseAction = ( action1, action2 ) => {
|
|
|
|
if ( action1.operation == action2.operation ) {
|
|
|
|
if ( action1.mouse == action2.mouse && action1.key == action2.key ) {
|
|
|
|
return true;
|
|
|
|
} else {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Set a new mouse action by specifying the operation to be performed and a mouse/key combination. In case of conflict, replaces the existing one
|
|
* @param {String} operation The operation to be performed ('PAN', 'ROTATE', 'ZOOM', 'FOV)
|
|
* @param {*} mouse A mouse button (0, 1, 2) or 'WHEEL' for wheel notches
|
|
* @param {*} key The keyboard modifier ('CTRL', 'SHIFT') or null if key is not needed
|
|
* @returns {Boolean} True if the mouse action has been successfully added, false otherwise
|
|
*/
|
|
setMouseAction = ( operation, mouse, key = null ) => {
|
|
|
|
const operationInput = [ 'PAN', 'ROTATE', 'ZOOM', 'FOV' ];
|
|
const mouseInput = [ 0, 1, 2, 'WHEEL' ];
|
|
const keyInput = [ 'CTRL', 'SHIFT', null ];
|
|
let state;
|
|
|
|
if ( ! operationInput.includes( operation ) || ! mouseInput.includes( mouse ) || ! keyInput.includes( key ) ) {
|
|
|
|
//invalid parameters
|
|
return false;
|
|
|
|
}
|
|
|
|
if ( mouse == 'WHEEL' ) {
|
|
|
|
if ( operation != 'ZOOM' && operation != 'FOV' ) {
|
|
|
|
//cannot associate 2D operation to 1D input
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
switch ( operation ) {
|
|
|
|
case 'PAN':
|
|
|
|
state = STATE.PAN;
|
|
break;
|
|
|
|
case 'ROTATE':
|
|
|
|
state = STATE.ROTATE;
|
|
break;
|
|
|
|
case 'ZOOM':
|
|
|
|
state = STATE.SCALE;
|
|
break;
|
|
|
|
case 'FOV':
|
|
|
|
state = STATE.FOV;
|
|
break;
|
|
|
|
}
|
|
|
|
const action = {
|
|
|
|
operation: operation,
|
|
mouse: mouse,
|
|
key: key,
|
|
state: state
|
|
|
|
};
|
|
|
|
for ( let i = 0; i < this.mouseActions.length; i ++ ) {
|
|
|
|
if ( this.mouseActions[ i ].mouse == action.mouse && this.mouseActions[ i ].key == action.key ) {
|
|
|
|
this.mouseActions.splice( i, 1, action );
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
this.mouseActions.push( action );
|
|
return true;
|
|
|
|
};
|
|
|
|
/**
|
|
* Remove a mouse action by specifying its mouse/key combination
|
|
* @param {*} mouse A mouse button (0, 1, 2) or 'WHEEL' for wheel notches
|
|
* @param {*} key The keyboard modifier ('CTRL', 'SHIFT') or null if key is not needed
|
|
* @returns {Boolean} True if the operation has been succesfully removed, false otherwise
|
|
*/
|
|
unsetMouseAction = ( mouse, key = null ) => {
|
|
|
|
for ( let i = 0; i < this.mouseActions.length; i ++ ) {
|
|
|
|
if ( this.mouseActions[ i ].mouse == mouse && this.mouseActions[ i ].key == key ) {
|
|
|
|
this.mouseActions.splice( i, 1 );
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
};
|
|
|
|
/**
|
|
* Return the operation associated to a mouse/keyboard combination
|
|
* @param {*} mouse A mouse button (0, 1, 2) or 'WHEEL' for wheel notches
|
|
* @param {*} key The keyboard modifier ('CTRL', 'SHIFT') or null if key is not needed
|
|
* @returns The operation if it has been found, null otherwise
|
|
*/
|
|
getOpFromAction = ( mouse, key ) => {
|
|
|
|
let action;
|
|
|
|
for ( let i = 0; i < this.mouseActions.length; i ++ ) {
|
|
|
|
action = this.mouseActions[ i ];
|
|
if ( action.mouse == mouse && action.key == key ) {
|
|
|
|
return action.operation;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if ( key != null ) {
|
|
|
|
for ( let i = 0; i < this.mouseActions.length; i ++ ) {
|
|
|
|
action = this.mouseActions[ i ];
|
|
if ( action.mouse == mouse && action.key == null ) {
|
|
|
|
return action.operation;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return null;
|
|
|
|
};
|
|
|
|
/**
|
|
* Get the operation associated to mouse and key combination and returns the corresponding FSA state
|
|
* @param {Number} mouse Mouse button
|
|
* @param {String} key Keyboard modifier
|
|
* @returns The FSA state obtained from the operation associated to mouse/keyboard combination
|
|
*/
|
|
getOpStateFromAction = ( mouse, key ) => {
|
|
|
|
let action;
|
|
|
|
for ( let i = 0; i < this.mouseActions.length; i ++ ) {
|
|
|
|
action = this.mouseActions[ i ];
|
|
if ( action.mouse == mouse && action.key == key ) {
|
|
|
|
return action.state;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if ( key != null ) {
|
|
|
|
for ( let i = 0; i < this.mouseActions.length; i ++ ) {
|
|
|
|
action = this.mouseActions[ i ];
|
|
if ( action.mouse == mouse && action.key == null ) {
|
|
|
|
return action.state;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return null;
|
|
|
|
};
|
|
|
|
/**
|
|
* Calculate the angle between two pointers
|
|
* @param {PointerEvent} p1
|
|
* @param {PointerEvent} p2
|
|
* @returns {Number} The angle between two pointers in degrees
|
|
*/
|
|
getAngle = ( p1, p2 ) => {
|
|
|
|
return Math.atan2( p2.clientY - p1.clientY, p2.clientX - p1.clientX ) * 180 / Math.PI;
|
|
|
|
};
|
|
|
|
/**
|
|
* Update a PointerEvent inside current pointerevents array
|
|
* @param {PointerEvent} event
|
|
*/
|
|
updateTouchEvent = ( event ) => {
|
|
|
|
for ( let i = 0; i < this._touchCurrent.length; i ++ ) {
|
|
|
|
if ( this._touchCurrent[ i ].pointerId == event.pointerId ) {
|
|
|
|
this._touchCurrent.splice( i, 1, event );
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Apply a transformation matrix, to the camera and gizmos
|
|
* @param {Object} transformation Object containing matrices to apply to camera and gizmos
|
|
*/
|
|
applyTransformMatrix( transformation ) {
|
|
|
|
if ( transformation.camera != null ) {
|
|
|
|
this._m4_1.copy( this._cameraMatrixState ).premultiply( transformation.camera );
|
|
this._m4_1.decompose( this.camera.position, this.camera.quaternion, this.camera.scale );
|
|
this.camera.updateMatrix();
|
|
|
|
//update camera up vector
|
|
if ( this._state == STATE.ROTATE || this._state == STATE.ZROTATE || this._state == STATE.ANIMATION_ROTATE ) {
|
|
|
|
this.camera.up.copy( this._upState ).applyQuaternion( this.camera.quaternion );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if ( transformation.gizmos != null ) {
|
|
|
|
this._m4_1.copy( this._gizmoMatrixState ).premultiply( transformation.gizmos );
|
|
this._m4_1.decompose( this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale );
|
|
this._gizmos.updateMatrix();
|
|
|
|
}
|
|
|
|
if ( this._state == STATE.SCALE || this._state == STATE.FOCUS || this._state == STATE.ANIMATION_FOCUS ) {
|
|
|
|
this._tbRadius = this.calculateTbRadius( this.camera );
|
|
|
|
if ( this.adjustNearFar ) {
|
|
|
|
const cameraDistance = this.camera.position.distanceTo( this._gizmos.position );
|
|
|
|
const bb = new Box3();
|
|
bb.setFromObject( this._gizmos );
|
|
const sphere = new Sphere();
|
|
bb.getBoundingSphere( sphere );
|
|
|
|
const adjustedNearPosition = Math.max( this._nearPos0, sphere.radius + sphere.center.length() );
|
|
const regularNearPosition = cameraDistance - this._initialNear;
|
|
|
|
const minNearPos = Math.min( adjustedNearPosition, regularNearPosition );
|
|
this.camera.near = cameraDistance - minNearPos;
|
|
|
|
|
|
const adjustedFarPosition = Math.min( this._farPos0, - sphere.radius + sphere.center.length() );
|
|
const regularFarPosition = cameraDistance - this._initialFar;
|
|
|
|
const minFarPos = Math.min( adjustedFarPosition, regularFarPosition );
|
|
this.camera.far = cameraDistance - minFarPos;
|
|
|
|
this.camera.updateProjectionMatrix();
|
|
|
|
} else {
|
|
|
|
let update = false;
|
|
|
|
if ( this.camera.near != this._initialNear ) {
|
|
|
|
this.camera.near = this._initialNear;
|
|
update = true;
|
|
|
|
}
|
|
|
|
if ( this.camera.far != this._initialFar ) {
|
|
|
|
this.camera.far = this._initialFar;
|
|
update = true;
|
|
|
|
}
|
|
|
|
if ( update ) {
|
|
|
|
this.camera.updateProjectionMatrix();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Calculate the angular speed
|
|
* @param {Number} p0 Position at t0
|
|
* @param {Number} p1 Position at t1
|
|
* @param {Number} t0 Initial time in milliseconds
|
|
* @param {Number} t1 Ending time in milliseconds
|
|
*/
|
|
calculateAngularSpeed = ( p0, p1, t0, t1 ) => {
|
|
|
|
const s = p1 - p0;
|
|
const t = ( t1 - t0 ) / 1000;
|
|
if ( t == 0 ) {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
return s / t;
|
|
|
|
};
|
|
|
|
/**
|
|
* Calculate the distance between two pointers
|
|
* @param {PointerEvent} p0 The first pointer
|
|
* @param {PointerEvent} p1 The second pointer
|
|
* @returns {number} The distance between the two pointers
|
|
*/
|
|
calculatePointersDistance = ( p0, p1 ) => {
|
|
|
|
return Math.sqrt( Math.pow( p1.clientX - p0.clientX, 2 ) + Math.pow( p1.clientY - p0.clientY, 2 ) );
|
|
|
|
};
|
|
|
|
/**
|
|
* Calculate the rotation axis as the vector perpendicular between two vectors
|
|
* @param {Vector3} vec1 The first vector
|
|
* @param {Vector3} vec2 The second vector
|
|
* @returns {Vector3} The normalized rotation axis
|
|
*/
|
|
calculateRotationAxis = ( vec1, vec2 ) => {
|
|
|
|
this._rotationMatrix.extractRotation( this._cameraMatrixState );
|
|
this._quat.setFromRotationMatrix( this._rotationMatrix );
|
|
|
|
this._rotationAxis.crossVectors( vec1, vec2 ).applyQuaternion( this._quat );
|
|
return this._rotationAxis.normalize().clone();
|
|
|
|
};
|
|
|
|
/**
|
|
* Calculate the trackball radius so that gizmo's diamater will be 2/3 of the minimum side of the camera frustum
|
|
* @param {Camera} camera
|
|
* @returns {Number} The trackball radius
|
|
*/
|
|
calculateTbRadius = ( camera ) => {
|
|
|
|
const distance = camera.position.distanceTo( this._gizmos.position );
|
|
|
|
if ( camera.type == 'PerspectiveCamera' ) {
|
|
|
|
const halfFovV = MathUtils.DEG2RAD * camera.fov * 0.5; //vertical fov/2 in radians
|
|
const halfFovH = Math.atan( ( camera.aspect ) * Math.tan( halfFovV ) ); //horizontal fov/2 in radians
|
|
return Math.tan( Math.min( halfFovV, halfFovH ) ) * distance * this.radiusFactor;
|
|
|
|
} else if ( camera.type == 'OrthographicCamera' ) {
|
|
|
|
return Math.min( camera.top, camera.right ) * this.radiusFactor;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Focus operation consist of positioning the point of interest in front of the camera and a slightly zoom in
|
|
* @param {Vector3} point The point of interest
|
|
* @param {Number} size Scale factor
|
|
* @param {Number} amount Amount of operation to be completed (used for focus animations, default is complete full operation)
|
|
*/
|
|
focus = ( point, size, amount = 1 ) => {
|
|
|
|
//move center of camera (along with gizmos) towards point of interest
|
|
_offset.copy( point ).sub( this._gizmos.position ).multiplyScalar( amount );
|
|
this._translationMatrix.makeTranslation( _offset.x, _offset.y, _offset.z );
|
|
|
|
_gizmoMatrixStateTemp.copy( this._gizmoMatrixState );
|
|
this._gizmoMatrixState.premultiply( this._translationMatrix );
|
|
this._gizmoMatrixState.decompose( this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale );
|
|
|
|
_cameraMatrixStateTemp.copy( this._cameraMatrixState );
|
|
this._cameraMatrixState.premultiply( this._translationMatrix );
|
|
this._cameraMatrixState.decompose( this.camera.position, this.camera.quaternion, this.camera.scale );
|
|
|
|
//apply zoom
|
|
if ( this.enableZoom ) {
|
|
|
|
this.applyTransformMatrix( this.scale( size, this._gizmos.position ) );
|
|
|
|
}
|
|
|
|
this._gizmoMatrixState.copy( _gizmoMatrixStateTemp );
|
|
this._cameraMatrixState.copy( _cameraMatrixStateTemp );
|
|
|
|
};
|
|
|
|
/**
|
|
* Draw a grid and add it to the scene
|
|
*/
|
|
drawGrid = () => {
|
|
|
|
if ( this.scene != null ) {
|
|
|
|
const color = 0x888888;
|
|
const multiplier = 3;
|
|
let size, divisions, maxLength, tick;
|
|
|
|
if ( this.camera.isOrthographicCamera ) {
|
|
|
|
const width = this.camera.right - this.camera.left;
|
|
const height = this.camera.bottom - this.camera.top;
|
|
|
|
maxLength = Math.max( width, height );
|
|
tick = maxLength / 20;
|
|
|
|
size = maxLength / this.camera.zoom * multiplier;
|
|
divisions = size / tick * this.camera.zoom;
|
|
|
|
} else if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
const distance = this.camera.position.distanceTo( this._gizmos.position );
|
|
const halfFovV = MathUtils.DEG2RAD * this.camera.fov * 0.5;
|
|
const halfFovH = Math.atan( ( this.camera.aspect ) * Math.tan( halfFovV ) );
|
|
|
|
maxLength = Math.tan( Math.max( halfFovV, halfFovH ) ) * distance * 2;
|
|
tick = maxLength / 20;
|
|
|
|
size = maxLength * multiplier;
|
|
divisions = size / tick;
|
|
|
|
}
|
|
|
|
if ( this._grid == null ) {
|
|
|
|
this._grid = new GridHelper( size, divisions, color, color );
|
|
this._grid.position.copy( this._gizmos.position );
|
|
this._gridPosition.copy( this._grid.position );
|
|
this._grid.quaternion.copy( this.camera.quaternion );
|
|
this._grid.rotateX( Math.PI * 0.5 );
|
|
|
|
this.scene.add( this._grid );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Remove all listeners, stop animations and clean scene
|
|
*/
|
|
dispose = () => {
|
|
|
|
if ( this._animationId != - 1 ) {
|
|
|
|
window.cancelAnimationFrame( this._animationId );
|
|
|
|
}
|
|
|
|
this.domElement.removeEventListener( 'pointerdown', this.onPointerDown );
|
|
this.domElement.removeEventListener( 'pointercancel', this.onPointerCancel );
|
|
this.domElement.removeEventListener( 'wheel', this.onWheel );
|
|
this.domElement.removeEventListener( 'contextmenu', this.onContextMenu );
|
|
|
|
window.removeEventListener( 'pointermove', this.onPointerMove );
|
|
window.removeEventListener( 'pointerup', this.onPointerUp );
|
|
|
|
window.removeEventListener( 'resize', this.onWindowResize );
|
|
|
|
if ( this.scene !== null ) this.scene.remove( this._gizmos );
|
|
this.disposeGrid();
|
|
|
|
};
|
|
|
|
/**
|
|
* remove the grid from the scene
|
|
*/
|
|
disposeGrid = () => {
|
|
|
|
if ( this._grid != null && this.scene != null ) {
|
|
|
|
this.scene.remove( this._grid );
|
|
this._grid = null;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Compute the easing out cubic function for ease out effect in animation
|
|
* @param {Number} t The absolute progress of the animation in the bound of 0 (beginning of the) and 1 (ending of animation)
|
|
* @returns {Number} Result of easing out cubic at time t
|
|
*/
|
|
easeOutCubic = ( t ) => {
|
|
|
|
return 1 - Math.pow( 1 - t, 3 );
|
|
|
|
};
|
|
|
|
/**
|
|
* Make rotation gizmos more or less visible
|
|
* @param {Boolean} isActive If true, make gizmos more visible
|
|
*/
|
|
activateGizmos = ( isActive ) => {
|
|
|
|
const gizmoX = this._gizmos.children[ 0 ];
|
|
const gizmoY = this._gizmos.children[ 1 ];
|
|
const gizmoZ = this._gizmos.children[ 2 ];
|
|
|
|
if ( isActive ) {
|
|
|
|
gizmoX.material.setValues( { opacity: 1 } );
|
|
gizmoY.material.setValues( { opacity: 1 } );
|
|
gizmoZ.material.setValues( { opacity: 1 } );
|
|
|
|
} else {
|
|
|
|
gizmoX.material.setValues( { opacity: 0.6 } );
|
|
gizmoY.material.setValues( { opacity: 0.6 } );
|
|
gizmoZ.material.setValues( { opacity: 0.6 } );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Calculate the cursor position in NDC
|
|
* @param {number} x Cursor horizontal coordinate within the canvas
|
|
* @param {number} y Cursor vertical coordinate within the canvas
|
|
* @param {HTMLElement} canvas The canvas where the renderer draws its output
|
|
* @returns {Vector2} Cursor normalized position inside the canvas
|
|
*/
|
|
getCursorNDC = ( cursorX, cursorY, canvas ) => {
|
|
|
|
const canvasRect = canvas.getBoundingClientRect();
|
|
this._v2_1.setX( ( ( cursorX - canvasRect.left ) / canvasRect.width ) * 2 - 1 );
|
|
this._v2_1.setY( ( ( canvasRect.bottom - cursorY ) / canvasRect.height ) * 2 - 1 );
|
|
return this._v2_1.clone();
|
|
|
|
};
|
|
|
|
/**
|
|
* Calculate the cursor position inside the canvas x/y coordinates with the origin being in the center of the canvas
|
|
* @param {Number} x Cursor horizontal coordinate within the canvas
|
|
* @param {Number} y Cursor vertical coordinate within the canvas
|
|
* @param {HTMLElement} canvas The canvas where the renderer draws its output
|
|
* @returns {Vector2} Cursor position inside the canvas
|
|
*/
|
|
getCursorPosition = ( cursorX, cursorY, canvas ) => {
|
|
|
|
this._v2_1.copy( this.getCursorNDC( cursorX, cursorY, canvas ) );
|
|
this._v2_1.x *= ( this.camera.right - this.camera.left ) * 0.5;
|
|
this._v2_1.y *= ( this.camera.top - this.camera.bottom ) * 0.5;
|
|
return this._v2_1.clone();
|
|
|
|
};
|
|
|
|
/**
|
|
* Set the camera to be controlled
|
|
* @param {Camera} camera The virtual camera to be controlled
|
|
*/
|
|
setCamera = ( camera ) => {
|
|
|
|
camera.lookAt( this.target );
|
|
camera.updateMatrix();
|
|
|
|
//setting state
|
|
if ( camera.type == 'PerspectiveCamera' ) {
|
|
|
|
this._fov0 = camera.fov;
|
|
this._fovState = camera.fov;
|
|
|
|
}
|
|
|
|
this._cameraMatrixState0.copy( camera.matrix );
|
|
this._cameraMatrixState.copy( this._cameraMatrixState0 );
|
|
this._cameraProjectionState.copy( camera.projectionMatrix );
|
|
this._zoom0 = camera.zoom;
|
|
this._zoomState = this._zoom0;
|
|
|
|
this._initialNear = camera.near;
|
|
this._nearPos0 = camera.position.distanceTo( this.target ) - camera.near;
|
|
this._nearPos = this._initialNear;
|
|
|
|
this._initialFar = camera.far;
|
|
this._farPos0 = camera.position.distanceTo( this.target ) - camera.far;
|
|
this._farPos = this._initialFar;
|
|
|
|
this._up0.copy( camera.up );
|
|
this._upState.copy( camera.up );
|
|
|
|
this.camera = camera;
|
|
this.camera.updateProjectionMatrix();
|
|
|
|
//making gizmos
|
|
this._tbRadius = this.calculateTbRadius( camera );
|
|
this.makeGizmos( this.target, this._tbRadius );
|
|
|
|
};
|
|
|
|
/**
|
|
* Set gizmos visibility
|
|
* @param {Boolean} value Value of gizmos visibility
|
|
*/
|
|
setGizmosVisible( value ) {
|
|
|
|
this._gizmos.visible = value;
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
/**
|
|
* Set gizmos radius factor and redraws gizmos
|
|
* @param {Float} value Value of radius factor
|
|
*/
|
|
setTbRadius( value ) {
|
|
|
|
this.radiusFactor = value;
|
|
this._tbRadius = this.calculateTbRadius( this.camera );
|
|
|
|
const curve = new EllipseCurve( 0, 0, this._tbRadius, this._tbRadius );
|
|
const points = curve.getPoints( this._curvePts );
|
|
const curveGeometry = new BufferGeometry().setFromPoints( points );
|
|
|
|
|
|
for ( const gizmo in this._gizmos.children ) {
|
|
|
|
this._gizmos.children[ gizmo ].geometry = curveGeometry;
|
|
|
|
}
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
/**
|
|
* Creates the rotation gizmos matching trackball center and radius
|
|
* @param {Vector3} tbCenter The trackball center
|
|
* @param {number} tbRadius The trackball radius
|
|
*/
|
|
makeGizmos = ( tbCenter, tbRadius ) => {
|
|
|
|
const curve = new EllipseCurve( 0, 0, tbRadius, tbRadius );
|
|
const points = curve.getPoints( this._curvePts );
|
|
|
|
//geometry
|
|
const curveGeometry = new BufferGeometry().setFromPoints( points );
|
|
|
|
//material
|
|
const curveMaterialX = new LineBasicMaterial( { color: 0xff8080, fog: false, transparent: true, opacity: 0.6 } );
|
|
const curveMaterialY = new LineBasicMaterial( { color: 0x80ff80, fog: false, transparent: true, opacity: 0.6 } );
|
|
const curveMaterialZ = new LineBasicMaterial( { color: 0x8080ff, fog: false, transparent: true, opacity: 0.6 } );
|
|
|
|
//line
|
|
const gizmoX = new Line( curveGeometry, curveMaterialX );
|
|
const gizmoY = new Line( curveGeometry, curveMaterialY );
|
|
const gizmoZ = new Line( curveGeometry, curveMaterialZ );
|
|
|
|
const rotation = Math.PI * 0.5;
|
|
gizmoX.rotation.x = rotation;
|
|
gizmoY.rotation.y = rotation;
|
|
|
|
|
|
//setting state
|
|
this._gizmoMatrixState0.identity().setPosition( tbCenter );
|
|
this._gizmoMatrixState.copy( this._gizmoMatrixState0 );
|
|
|
|
if ( this.camera.zoom !== 1 ) {
|
|
|
|
//adapt gizmos size to camera zoom
|
|
const size = 1 / this.camera.zoom;
|
|
this._scaleMatrix.makeScale( size, size, size );
|
|
this._translationMatrix.makeTranslation( - tbCenter.x, - tbCenter.y, - tbCenter.z );
|
|
|
|
this._gizmoMatrixState.premultiply( this._translationMatrix ).premultiply( this._scaleMatrix );
|
|
this._translationMatrix.makeTranslation( tbCenter.x, tbCenter.y, tbCenter.z );
|
|
this._gizmoMatrixState.premultiply( this._translationMatrix );
|
|
|
|
}
|
|
|
|
this._gizmoMatrixState.decompose( this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale );
|
|
|
|
//
|
|
|
|
this._gizmos.traverse( function ( object ) {
|
|
|
|
if ( object.isLine ) {
|
|
|
|
object.geometry.dispose();
|
|
object.material.dispose();
|
|
|
|
}
|
|
|
|
} );
|
|
|
|
this._gizmos.clear();
|
|
|
|
//
|
|
|
|
this._gizmos.add( gizmoX );
|
|
this._gizmos.add( gizmoY );
|
|
this._gizmos.add( gizmoZ );
|
|
|
|
};
|
|
|
|
/**
|
|
* Perform animation for focus operation
|
|
* @param {Number} time Instant in which this function is called as performance.now()
|
|
* @param {Vector3} point Point of interest for focus operation
|
|
* @param {Matrix4} cameraMatrix Camera matrix
|
|
* @param {Matrix4} gizmoMatrix Gizmos matrix
|
|
*/
|
|
onFocusAnim = ( time, point, cameraMatrix, gizmoMatrix ) => {
|
|
|
|
if ( this._timeStart == - 1 ) {
|
|
|
|
//animation start
|
|
this._timeStart = time;
|
|
|
|
}
|
|
|
|
if ( this._state == STATE.ANIMATION_FOCUS ) {
|
|
|
|
const deltaTime = time - this._timeStart;
|
|
const animTime = deltaTime / this.focusAnimationTime;
|
|
|
|
this._gizmoMatrixState.copy( gizmoMatrix );
|
|
|
|
if ( animTime >= 1 ) {
|
|
|
|
//animation end
|
|
|
|
this._gizmoMatrixState.decompose( this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale );
|
|
|
|
this.focus( point, this.scaleFactor );
|
|
|
|
this._timeStart = - 1;
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.activateGizmos( false );
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
} else {
|
|
|
|
const amount = this.easeOutCubic( animTime );
|
|
const size = ( ( 1 - amount ) + ( this.scaleFactor * amount ) );
|
|
|
|
this._gizmoMatrixState.decompose( this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale );
|
|
this.focus( point, size, amount );
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
const self = this;
|
|
this._animationId = window.requestAnimationFrame( function ( t ) {
|
|
|
|
self.onFocusAnim( t, point, cameraMatrix, gizmoMatrix.clone() );
|
|
|
|
} );
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
//interrupt animation
|
|
|
|
this._animationId = - 1;
|
|
this._timeStart = - 1;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Perform animation for rotation operation
|
|
* @param {Number} time Instant in which this function is called as performance.now()
|
|
* @param {Vector3} rotationAxis Rotation axis
|
|
* @param {number} w0 Initial angular velocity
|
|
*/
|
|
onRotationAnim = ( time, rotationAxis, w0 ) => {
|
|
|
|
if ( this._timeStart == - 1 ) {
|
|
|
|
//animation start
|
|
this._anglePrev = 0;
|
|
this._angleCurrent = 0;
|
|
this._timeStart = time;
|
|
|
|
}
|
|
|
|
if ( this._state == STATE.ANIMATION_ROTATE ) {
|
|
|
|
//w = w0 + alpha * t
|
|
const deltaTime = ( time - this._timeStart ) / 1000;
|
|
const w = w0 + ( ( - this.dampingFactor ) * deltaTime );
|
|
|
|
if ( w > 0 ) {
|
|
|
|
//tetha = 0.5 * alpha * t^2 + w0 * t + tetha0
|
|
this._angleCurrent = 0.5 * ( - this.dampingFactor ) * Math.pow( deltaTime, 2 ) + w0 * deltaTime + 0;
|
|
this.applyTransformMatrix( this.rotate( rotationAxis, this._angleCurrent ) );
|
|
this.dispatchEvent( _changeEvent );
|
|
const self = this;
|
|
this._animationId = window.requestAnimationFrame( function ( t ) {
|
|
|
|
self.onRotationAnim( t, rotationAxis, w0 );
|
|
|
|
} );
|
|
|
|
} else {
|
|
|
|
this._animationId = - 1;
|
|
this._timeStart = - 1;
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
this.activateGizmos( false );
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
//interrupt animation
|
|
|
|
this._animationId = - 1;
|
|
this._timeStart = - 1;
|
|
|
|
if ( this._state != STATE.ROTATE ) {
|
|
|
|
this.activateGizmos( false );
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
/**
|
|
* Perform pan operation moving camera between two points
|
|
* @param {Vector3} p0 Initial point
|
|
* @param {Vector3} p1 Ending point
|
|
* @param {Boolean} adjust If movement should be adjusted considering camera distance (Perspective only)
|
|
*/
|
|
pan = ( p0, p1, adjust = false ) => {
|
|
|
|
const movement = p0.clone().sub( p1 );
|
|
|
|
if ( this.camera.isOrthographicCamera ) {
|
|
|
|
//adjust movement amount
|
|
movement.multiplyScalar( 1 / this.camera.zoom );
|
|
|
|
} else if ( this.camera.isPerspectiveCamera && adjust ) {
|
|
|
|
//adjust movement amount
|
|
this._v3_1.setFromMatrixPosition( this._cameraMatrixState0 ); //camera's initial position
|
|
this._v3_2.setFromMatrixPosition( this._gizmoMatrixState0 ); //gizmo's initial position
|
|
const distanceFactor = this._v3_1.distanceTo( this._v3_2 ) / this.camera.position.distanceTo( this._gizmos.position );
|
|
movement.multiplyScalar( 1 / distanceFactor );
|
|
|
|
}
|
|
|
|
this._v3_1.set( movement.x, movement.y, 0 ).applyQuaternion( this.camera.quaternion );
|
|
|
|
this._m4_1.makeTranslation( this._v3_1.x, this._v3_1.y, this._v3_1.z );
|
|
|
|
this.setTransformationMatrices( this._m4_1, this._m4_1 );
|
|
return _transformation;
|
|
|
|
};
|
|
|
|
/**
|
|
* Reset trackball
|
|
*/
|
|
reset = () => {
|
|
|
|
this.camera.zoom = this._zoom0;
|
|
|
|
if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
this.camera.fov = this._fov0;
|
|
|
|
}
|
|
|
|
this.camera.near = this._nearPos;
|
|
this.camera.far = this._farPos;
|
|
this._cameraMatrixState.copy( this._cameraMatrixState0 );
|
|
this._cameraMatrixState.decompose( this.camera.position, this.camera.quaternion, this.camera.scale );
|
|
this.camera.up.copy( this._up0 );
|
|
|
|
this.camera.updateMatrix();
|
|
this.camera.updateProjectionMatrix();
|
|
|
|
this._gizmoMatrixState.copy( this._gizmoMatrixState0 );
|
|
this._gizmoMatrixState0.decompose( this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale );
|
|
this._gizmos.updateMatrix();
|
|
|
|
this._tbRadius = this.calculateTbRadius( this.camera );
|
|
this.makeGizmos( this._gizmos.position, this._tbRadius );
|
|
|
|
this.camera.lookAt( this._gizmos.position );
|
|
|
|
this.updateTbState( STATE.IDLE, false );
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
};
|
|
|
|
/**
|
|
* Rotate the camera around an axis passing by trackball's center
|
|
* @param {Vector3} axis Rotation axis
|
|
* @param {number} angle Angle in radians
|
|
* @returns {Object} Object with 'camera' field containing transformation matrix resulting from the operation to be applied to the camera
|
|
*/
|
|
rotate = ( axis, angle ) => {
|
|
|
|
const point = this._gizmos.position; //rotation center
|
|
this._translationMatrix.makeTranslation( - point.x, - point.y, - point.z );
|
|
this._rotationMatrix.makeRotationAxis( axis, - angle );
|
|
|
|
//rotate camera
|
|
this._m4_1.makeTranslation( point.x, point.y, point.z );
|
|
this._m4_1.multiply( this._rotationMatrix );
|
|
this._m4_1.multiply( this._translationMatrix );
|
|
|
|
this.setTransformationMatrices( this._m4_1 );
|
|
|
|
return _transformation;
|
|
|
|
};
|
|
|
|
copyState = () => {
|
|
|
|
let state;
|
|
if ( this.camera.isOrthographicCamera ) {
|
|
|
|
state = JSON.stringify( { arcballState: {
|
|
|
|
cameraFar: this.camera.far,
|
|
cameraMatrix: this.camera.matrix,
|
|
cameraNear: this.camera.near,
|
|
cameraUp: this.camera.up,
|
|
cameraZoom: this.camera.zoom,
|
|
gizmoMatrix: this._gizmos.matrix
|
|
|
|
} } );
|
|
|
|
} else if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
state = JSON.stringify( { arcballState: {
|
|
cameraFar: this.camera.far,
|
|
cameraFov: this.camera.fov,
|
|
cameraMatrix: this.camera.matrix,
|
|
cameraNear: this.camera.near,
|
|
cameraUp: this.camera.up,
|
|
cameraZoom: this.camera.zoom,
|
|
gizmoMatrix: this._gizmos.matrix
|
|
|
|
} } );
|
|
|
|
}
|
|
|
|
navigator.clipboard.writeText( state );
|
|
|
|
};
|
|
|
|
pasteState = () => {
|
|
|
|
const self = this;
|
|
navigator.clipboard.readText().then( function resolved( value ) {
|
|
|
|
self.setStateFromJSON( value );
|
|
|
|
} );
|
|
|
|
};
|
|
|
|
/**
|
|
* Save the current state of the control. This can later be recover with .reset
|
|
*/
|
|
saveState = () => {
|
|
|
|
this._cameraMatrixState0.copy( this.camera.matrix );
|
|
this._gizmoMatrixState0.copy( this._gizmos.matrix );
|
|
this._nearPos = this.camera.near;
|
|
this._farPos = this.camera.far;
|
|
this._zoom0 = this.camera.zoom;
|
|
this._up0.copy( this.camera.up );
|
|
|
|
if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
this._fov0 = this.camera.fov;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Perform uniform scale operation around a given point
|
|
* @param {Number} size Scale factor
|
|
* @param {Vector3} point Point around which scale
|
|
* @param {Boolean} scaleGizmos If gizmos should be scaled (Perspective only)
|
|
* @returns {Object} Object with 'camera' and 'gizmo' fields containing transformation matrices resulting from the operation to be applied to the camera and gizmos
|
|
*/
|
|
scale = ( size, point, scaleGizmos = true ) => {
|
|
|
|
_scalePointTemp.copy( point );
|
|
let sizeInverse = 1 / size;
|
|
|
|
if ( this.camera.isOrthographicCamera ) {
|
|
|
|
//camera zoom
|
|
this.camera.zoom = this._zoomState;
|
|
this.camera.zoom *= size;
|
|
|
|
//check min and max zoom
|
|
if ( this.camera.zoom > this.maxZoom ) {
|
|
|
|
this.camera.zoom = this.maxZoom;
|
|
sizeInverse = this._zoomState / this.maxZoom;
|
|
|
|
} else if ( this.camera.zoom < this.minZoom ) {
|
|
|
|
this.camera.zoom = this.minZoom;
|
|
sizeInverse = this._zoomState / this.minZoom;
|
|
|
|
}
|
|
|
|
this.camera.updateProjectionMatrix();
|
|
|
|
this._v3_1.setFromMatrixPosition( this._gizmoMatrixState ); //gizmos position
|
|
|
|
//scale gizmos so they appear in the same spot having the same dimension
|
|
this._scaleMatrix.makeScale( sizeInverse, sizeInverse, sizeInverse );
|
|
this._translationMatrix.makeTranslation( - this._v3_1.x, - this._v3_1.y, - this._v3_1.z );
|
|
|
|
this._m4_2.makeTranslation( this._v3_1.x, this._v3_1.y, this._v3_1.z ).multiply( this._scaleMatrix );
|
|
this._m4_2.multiply( this._translationMatrix );
|
|
|
|
|
|
//move camera and gizmos to obtain pinch effect
|
|
_scalePointTemp.sub( this._v3_1 );
|
|
|
|
const amount = _scalePointTemp.clone().multiplyScalar( sizeInverse );
|
|
_scalePointTemp.sub( amount );
|
|
|
|
this._m4_1.makeTranslation( _scalePointTemp.x, _scalePointTemp.y, _scalePointTemp.z );
|
|
this._m4_2.premultiply( this._m4_1 );
|
|
|
|
this.setTransformationMatrices( this._m4_1, this._m4_2 );
|
|
return _transformation;
|
|
|
|
} else if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
this._v3_1.setFromMatrixPosition( this._cameraMatrixState );
|
|
this._v3_2.setFromMatrixPosition( this._gizmoMatrixState );
|
|
|
|
//move camera
|
|
let distance = this._v3_1.distanceTo( _scalePointTemp );
|
|
let amount = distance - ( distance * sizeInverse );
|
|
|
|
//check min and max distance
|
|
const newDistance = distance - amount;
|
|
if ( newDistance < this.minDistance ) {
|
|
|
|
sizeInverse = this.minDistance / distance;
|
|
amount = distance - ( distance * sizeInverse );
|
|
|
|
} else if ( newDistance > this.maxDistance ) {
|
|
|
|
sizeInverse = this.maxDistance / distance;
|
|
amount = distance - ( distance * sizeInverse );
|
|
|
|
}
|
|
|
|
_offset.copy( _scalePointTemp ).sub( this._v3_1 ).normalize().multiplyScalar( amount );
|
|
|
|
this._m4_1.makeTranslation( _offset.x, _offset.y, _offset.z );
|
|
|
|
|
|
if ( scaleGizmos ) {
|
|
|
|
//scale gizmos so they appear in the same spot having the same dimension
|
|
const pos = this._v3_2;
|
|
|
|
distance = pos.distanceTo( _scalePointTemp );
|
|
amount = distance - ( distance * sizeInverse );
|
|
_offset.copy( _scalePointTemp ).sub( this._v3_2 ).normalize().multiplyScalar( amount );
|
|
|
|
this._translationMatrix.makeTranslation( pos.x, pos.y, pos.z );
|
|
this._scaleMatrix.makeScale( sizeInverse, sizeInverse, sizeInverse );
|
|
|
|
this._m4_2.makeTranslation( _offset.x, _offset.y, _offset.z ).multiply( this._translationMatrix );
|
|
this._m4_2.multiply( this._scaleMatrix );
|
|
|
|
this._translationMatrix.makeTranslation( - pos.x, - pos.y, - pos.z );
|
|
|
|
this._m4_2.multiply( this._translationMatrix );
|
|
this.setTransformationMatrices( this._m4_1, this._m4_2 );
|
|
|
|
|
|
} else {
|
|
|
|
this.setTransformationMatrices( this._m4_1 );
|
|
|
|
}
|
|
|
|
return _transformation;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Set camera fov
|
|
* @param {Number} value fov to be setted
|
|
*/
|
|
setFov = ( value ) => {
|
|
|
|
if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
this.camera.fov = MathUtils.clamp( value, this.minFov, this.maxFov );
|
|
this.camera.updateProjectionMatrix();
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Set values in transformation object
|
|
* @param {Matrix4} camera Transformation to be applied to the camera
|
|
* @param {Matrix4} gizmos Transformation to be applied to gizmos
|
|
*/
|
|
setTransformationMatrices( camera = null, gizmos = null ) {
|
|
|
|
if ( camera != null ) {
|
|
|
|
if ( _transformation.camera != null ) {
|
|
|
|
_transformation.camera.copy( camera );
|
|
|
|
} else {
|
|
|
|
_transformation.camera = camera.clone();
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
_transformation.camera = null;
|
|
|
|
}
|
|
|
|
if ( gizmos != null ) {
|
|
|
|
if ( _transformation.gizmos != null ) {
|
|
|
|
_transformation.gizmos.copy( gizmos );
|
|
|
|
} else {
|
|
|
|
_transformation.gizmos = gizmos.clone();
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
_transformation.gizmos = null;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Rotate camera around its direction axis passing by a given point by a given angle
|
|
* @param {Vector3} point The point where the rotation axis is passing trough
|
|
* @param {Number} angle Angle in radians
|
|
* @returns The computed transormation matix
|
|
*/
|
|
zRotate = ( point, angle ) => {
|
|
|
|
this._rotationMatrix.makeRotationAxis( this._rotationAxis, angle );
|
|
this._translationMatrix.makeTranslation( - point.x, - point.y, - point.z );
|
|
|
|
this._m4_1.makeTranslation( point.x, point.y, point.z );
|
|
this._m4_1.multiply( this._rotationMatrix );
|
|
this._m4_1.multiply( this._translationMatrix );
|
|
|
|
this._v3_1.setFromMatrixPosition( this._gizmoMatrixState ).sub( point ); //vector from rotation center to gizmos position
|
|
this._v3_2.copy( this._v3_1 ).applyAxisAngle( this._rotationAxis, angle ); //apply rotation
|
|
this._v3_2.sub( this._v3_1 );
|
|
|
|
this._m4_2.makeTranslation( this._v3_2.x, this._v3_2.y, this._v3_2.z );
|
|
|
|
this.setTransformationMatrices( this._m4_1, this._m4_2 );
|
|
return _transformation;
|
|
|
|
};
|
|
|
|
|
|
getRaycaster() {
|
|
|
|
return _raycaster;
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Unproject the cursor on the 3D object surface
|
|
* @param {Vector2} cursor Cursor coordinates in NDC
|
|
* @param {Camera} camera Virtual camera
|
|
* @returns {Vector3} The point of intersection with the model, if exist, null otherwise
|
|
*/
|
|
unprojectOnObj = ( cursor, camera ) => {
|
|
|
|
const raycaster = this.getRaycaster();
|
|
raycaster.near = camera.near;
|
|
raycaster.far = camera.far;
|
|
raycaster.setFromCamera( cursor, camera );
|
|
|
|
const intersect = raycaster.intersectObjects( this.scene.children, true );
|
|
|
|
for ( let i = 0; i < intersect.length; i ++ ) {
|
|
|
|
if ( intersect[ i ].object.uuid != this._gizmos.uuid && intersect[ i ].face != null ) {
|
|
|
|
return intersect[ i ].point.clone();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return null;
|
|
|
|
};
|
|
|
|
/**
|
|
* Unproject the cursor on the trackball surface
|
|
* @param {Camera} camera The virtual camera
|
|
* @param {Number} cursorX Cursor horizontal coordinate on screen
|
|
* @param {Number} cursorY Cursor vertical coordinate on screen
|
|
* @param {HTMLElement} canvas The canvas where the renderer draws its output
|
|
* @param {number} tbRadius The trackball radius
|
|
* @returns {Vector3} The unprojected point on the trackball surface
|
|
*/
|
|
unprojectOnTbSurface = ( camera, cursorX, cursorY, canvas, tbRadius ) => {
|
|
|
|
if ( camera.type == 'OrthographicCamera' ) {
|
|
|
|
this._v2_1.copy( this.getCursorPosition( cursorX, cursorY, canvas ) );
|
|
this._v3_1.set( this._v2_1.x, this._v2_1.y, 0 );
|
|
|
|
const x2 = Math.pow( this._v2_1.x, 2 );
|
|
const y2 = Math.pow( this._v2_1.y, 2 );
|
|
const r2 = Math.pow( this._tbRadius, 2 );
|
|
|
|
if ( x2 + y2 <= r2 * 0.5 ) {
|
|
|
|
//intersection with sphere
|
|
this._v3_1.setZ( Math.sqrt( r2 - ( x2 + y2 ) ) );
|
|
|
|
} else {
|
|
|
|
//intersection with hyperboloid
|
|
this._v3_1.setZ( ( r2 * 0.5 ) / ( Math.sqrt( x2 + y2 ) ) );
|
|
|
|
}
|
|
|
|
return this._v3_1;
|
|
|
|
} else if ( camera.type == 'PerspectiveCamera' ) {
|
|
|
|
//unproject cursor on the near plane
|
|
this._v2_1.copy( this.getCursorNDC( cursorX, cursorY, canvas ) );
|
|
|
|
this._v3_1.set( this._v2_1.x, this._v2_1.y, - 1 );
|
|
this._v3_1.applyMatrix4( camera.projectionMatrixInverse );
|
|
|
|
const rayDir = this._v3_1.clone().normalize(); //unprojected ray direction
|
|
const cameraGizmoDistance = camera.position.distanceTo( this._gizmos.position );
|
|
const radius2 = Math.pow( tbRadius, 2 );
|
|
|
|
// camera
|
|
// |\
|
|
// | \
|
|
// | \
|
|
// h | \
|
|
// | \
|
|
// | \
|
|
// _ _ | _ _ _\ _ _ near plane
|
|
// l
|
|
|
|
const h = this._v3_1.z;
|
|
const l = Math.sqrt( Math.pow( this._v3_1.x, 2 ) + Math.pow( this._v3_1.y, 2 ) );
|
|
|
|
if ( l == 0 ) {
|
|
|
|
//ray aligned with camera
|
|
rayDir.set( this._v3_1.x, this._v3_1.y, tbRadius );
|
|
return rayDir;
|
|
|
|
}
|
|
|
|
const m = h / l;
|
|
const q = cameraGizmoDistance;
|
|
|
|
/*
|
|
* calculate intersection point between unprojected ray and trackball surface
|
|
*|y = m * x + q
|
|
*|x^2 + y^2 = r^2
|
|
*
|
|
* (m^2 + 1) * x^2 + (2 * m * q) * x + q^2 - r^2 = 0
|
|
*/
|
|
let a = Math.pow( m, 2 ) + 1;
|
|
let b = 2 * m * q;
|
|
let c = Math.pow( q, 2 ) - radius2;
|
|
let delta = Math.pow( b, 2 ) - ( 4 * a * c );
|
|
|
|
if ( delta >= 0 ) {
|
|
|
|
//intersection with sphere
|
|
this._v2_1.setX( ( - b - Math.sqrt( delta ) ) / ( 2 * a ) );
|
|
this._v2_1.setY( m * this._v2_1.x + q );
|
|
|
|
const angle = MathUtils.RAD2DEG * this._v2_1.angle();
|
|
|
|
if ( angle >= 45 ) {
|
|
|
|
//if angle between intersection point and X' axis is >= 45°, return that point
|
|
//otherwise, calculate intersection point with hyperboloid
|
|
|
|
const rayLength = Math.sqrt( Math.pow( this._v2_1.x, 2 ) + Math.pow( ( cameraGizmoDistance - this._v2_1.y ), 2 ) );
|
|
rayDir.multiplyScalar( rayLength );
|
|
rayDir.z += cameraGizmoDistance;
|
|
return rayDir;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
//intersection with hyperboloid
|
|
/*
|
|
*|y = m * x + q
|
|
*|y = (1 / x) * (r^2 / 2)
|
|
*
|
|
* m * x^2 + q * x - r^2 / 2 = 0
|
|
*/
|
|
|
|
a = m;
|
|
b = q;
|
|
c = - radius2 * 0.5;
|
|
delta = Math.pow( b, 2 ) - ( 4 * a * c );
|
|
this._v2_1.setX( ( - b - Math.sqrt( delta ) ) / ( 2 * a ) );
|
|
this._v2_1.setY( m * this._v2_1.x + q );
|
|
|
|
const rayLength = Math.sqrt( Math.pow( this._v2_1.x, 2 ) + Math.pow( ( cameraGizmoDistance - this._v2_1.y ), 2 ) );
|
|
|
|
rayDir.multiplyScalar( rayLength );
|
|
rayDir.z += cameraGizmoDistance;
|
|
return rayDir;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
/**
|
|
* Unproject the cursor on the plane passing through the center of the trackball orthogonal to the camera
|
|
* @param {Camera} camera The virtual camera
|
|
* @param {Number} cursorX Cursor horizontal coordinate on screen
|
|
* @param {Number} cursorY Cursor vertical coordinate on screen
|
|
* @param {HTMLElement} canvas The canvas where the renderer draws its output
|
|
* @param {Boolean} initialDistance If initial distance between camera and gizmos should be used for calculations instead of current (Perspective only)
|
|
* @returns {Vector3} The unprojected point on the trackball plane
|
|
*/
|
|
unprojectOnTbPlane = ( camera, cursorX, cursorY, canvas, initialDistance = false ) => {
|
|
|
|
if ( camera.type == 'OrthographicCamera' ) {
|
|
|
|
this._v2_1.copy( this.getCursorPosition( cursorX, cursorY, canvas ) );
|
|
this._v3_1.set( this._v2_1.x, this._v2_1.y, 0 );
|
|
|
|
return this._v3_1.clone();
|
|
|
|
} else if ( camera.type == 'PerspectiveCamera' ) {
|
|
|
|
this._v2_1.copy( this.getCursorNDC( cursorX, cursorY, canvas ) );
|
|
|
|
//unproject cursor on the near plane
|
|
this._v3_1.set( this._v2_1.x, this._v2_1.y, - 1 );
|
|
this._v3_1.applyMatrix4( camera.projectionMatrixInverse );
|
|
|
|
const rayDir = this._v3_1.clone().normalize(); //unprojected ray direction
|
|
|
|
// camera
|
|
// |\
|
|
// | \
|
|
// | \
|
|
// h | \
|
|
// | \
|
|
// | \
|
|
// _ _ | _ _ _\ _ _ near plane
|
|
// l
|
|
|
|
const h = this._v3_1.z;
|
|
const l = Math.sqrt( Math.pow( this._v3_1.x, 2 ) + Math.pow( this._v3_1.y, 2 ) );
|
|
let cameraGizmoDistance;
|
|
|
|
if ( initialDistance ) {
|
|
|
|
cameraGizmoDistance = this._v3_1.setFromMatrixPosition( this._cameraMatrixState0 ).distanceTo( this._v3_2.setFromMatrixPosition( this._gizmoMatrixState0 ) );
|
|
|
|
} else {
|
|
|
|
cameraGizmoDistance = camera.position.distanceTo( this._gizmos.position );
|
|
|
|
}
|
|
|
|
/*
|
|
* calculate intersection point between unprojected ray and the plane
|
|
*|y = mx + q
|
|
*|y = 0
|
|
*
|
|
* x = -q/m
|
|
*/
|
|
if ( l == 0 ) {
|
|
|
|
//ray aligned with camera
|
|
rayDir.set( 0, 0, 0 );
|
|
return rayDir;
|
|
|
|
}
|
|
|
|
const m = h / l;
|
|
const q = cameraGizmoDistance;
|
|
const x = - q / m;
|
|
|
|
const rayLength = Math.sqrt( Math.pow( q, 2 ) + Math.pow( x, 2 ) );
|
|
rayDir.multiplyScalar( rayLength );
|
|
rayDir.z = 0;
|
|
return rayDir;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Update camera and gizmos state
|
|
*/
|
|
updateMatrixState = () => {
|
|
|
|
//update camera and gizmos state
|
|
this._cameraMatrixState.copy( this.camera.matrix );
|
|
this._gizmoMatrixState.copy( this._gizmos.matrix );
|
|
|
|
if ( this.camera.isOrthographicCamera ) {
|
|
|
|
this._cameraProjectionState.copy( this.camera.projectionMatrix );
|
|
this.camera.updateProjectionMatrix();
|
|
this._zoomState = this.camera.zoom;
|
|
|
|
} else if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
this._fovState = this.camera.fov;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Update the trackball FSA
|
|
* @param {STATE} newState New state of the FSA
|
|
* @param {Boolean} updateMatrices If matriices state should be updated
|
|
*/
|
|
updateTbState = ( newState, updateMatrices ) => {
|
|
|
|
this._state = newState;
|
|
if ( updateMatrices ) {
|
|
|
|
this.updateMatrixState();
|
|
|
|
}
|
|
|
|
};
|
|
|
|
update = () => {
|
|
|
|
const EPS = 0.000001;
|
|
|
|
if ( this.target.equals( this._currentTarget ) === false ) {
|
|
|
|
this._gizmos.position.copy( this.target ); //for correct radius calculation
|
|
this._tbRadius = this.calculateTbRadius( this.camera );
|
|
this.makeGizmos( this.target, this._tbRadius );
|
|
this._currentTarget.copy( this.target );
|
|
|
|
}
|
|
|
|
//check min/max parameters
|
|
if ( this.camera.isOrthographicCamera ) {
|
|
|
|
//check zoom
|
|
if ( this.camera.zoom > this.maxZoom || this.camera.zoom < this.minZoom ) {
|
|
|
|
const newZoom = MathUtils.clamp( this.camera.zoom, this.minZoom, this.maxZoom );
|
|
this.applyTransformMatrix( this.scale( newZoom / this.camera.zoom, this._gizmos.position, true ) );
|
|
|
|
}
|
|
|
|
} else if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
//check distance
|
|
const distance = this.camera.position.distanceTo( this._gizmos.position );
|
|
|
|
if ( distance > this.maxDistance + EPS || distance < this.minDistance - EPS ) {
|
|
|
|
const newDistance = MathUtils.clamp( distance, this.minDistance, this.maxDistance );
|
|
this.applyTransformMatrix( this.scale( newDistance / distance, this._gizmos.position ) );
|
|
this.updateMatrixState();
|
|
|
|
}
|
|
|
|
//check fov
|
|
if ( this.camera.fov < this.minFov || this.camera.fov > this.maxFov ) {
|
|
|
|
this.camera.fov = MathUtils.clamp( this.camera.fov, this.minFov, this.maxFov );
|
|
this.camera.updateProjectionMatrix();
|
|
|
|
}
|
|
|
|
const oldRadius = this._tbRadius;
|
|
this._tbRadius = this.calculateTbRadius( this.camera );
|
|
|
|
if ( oldRadius < this._tbRadius - EPS || oldRadius > this._tbRadius + EPS ) {
|
|
|
|
const scale = ( this._gizmos.scale.x + this._gizmos.scale.y + this._gizmos.scale.z ) / 3;
|
|
const newRadius = this._tbRadius / scale;
|
|
const curve = new EllipseCurve( 0, 0, newRadius, newRadius );
|
|
const points = curve.getPoints( this._curvePts );
|
|
const curveGeometry = new BufferGeometry().setFromPoints( points );
|
|
|
|
for ( const gizmo in this._gizmos.children ) {
|
|
|
|
this._gizmos.children[ gizmo ].geometry = curveGeometry;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
this.camera.lookAt( this._gizmos.position );
|
|
|
|
};
|
|
|
|
setStateFromJSON = ( json ) => {
|
|
|
|
const state = JSON.parse( json );
|
|
|
|
if ( state.arcballState != undefined ) {
|
|
|
|
this._cameraMatrixState.fromArray( state.arcballState.cameraMatrix.elements );
|
|
this._cameraMatrixState.decompose( this.camera.position, this.camera.quaternion, this.camera.scale );
|
|
|
|
this.camera.up.copy( state.arcballState.cameraUp );
|
|
this.camera.near = state.arcballState.cameraNear;
|
|
this.camera.far = state.arcballState.cameraFar;
|
|
|
|
this.camera.zoom = state.arcballState.cameraZoom;
|
|
|
|
if ( this.camera.isPerspectiveCamera ) {
|
|
|
|
this.camera.fov = state.arcballState.cameraFov;
|
|
|
|
}
|
|
|
|
this._gizmoMatrixState.fromArray( state.arcballState.gizmoMatrix.elements );
|
|
this._gizmoMatrixState.decompose( this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale );
|
|
|
|
this.camera.updateMatrix();
|
|
this.camera.updateProjectionMatrix();
|
|
|
|
this._gizmos.updateMatrix();
|
|
|
|
this._tbRadius = this.calculateTbRadius( this.camera );
|
|
const gizmoTmp = new Matrix4().copy( this._gizmoMatrixState0 );
|
|
this.makeGizmos( this._gizmos.position, this._tbRadius );
|
|
this._gizmoMatrixState0.copy( gizmoTmp );
|
|
|
|
this.camera.lookAt( this._gizmos.position );
|
|
this.updateTbState( STATE.IDLE, false );
|
|
|
|
this.dispatchEvent( _changeEvent );
|
|
|
|
}
|
|
|
|
};
|
|
|
|
}
|
|
|
|
export { ArcballControls };
|
|
|