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CameraControls.ts
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CameraControls.ts
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import type * as _THREE from 'three';
import {
THREESubset,
Ref,
MOUSE_BUTTON,
ACTION,
DOLLY_DIRECTION,
PointerInput,
MouseButtons,
Touches,
FitToOptions,
CameraControlsEventMap,
isPerspectiveCamera,
isOrthographicCamera,
} from './types';
import {
PI_2,
PI_HALF,
} from './constants';
import {
DEG2RAD,
clamp,
approxZero,
approxEquals,
roundToStep,
infinityToMaxNumber,
maxNumberToInfinity,
smoothDamp,
smoothDampVec3,
} from './utils/math-utils';
import { extractClientCoordFromEvent } from './utils/extractClientCoordFromEvent';
import { notSupportedInOrthographicCamera } from './utils/notSupportedInOrthographicCamera';
import { EventDispatcher, Listener } from './EventDispatcher';
const VERSION = '__VERSION'; // will be replaced with `version` in package.json during the build process.
const TOUCH_DOLLY_FACTOR = 1 / 8;
const isMac = /Mac/.test( globalThis?.navigator?.platform );
let THREE: THREESubset;
let _ORIGIN: _THREE.Vector3;
let _AXIS_Y: _THREE.Vector3;
let _AXIS_Z: _THREE.Vector3;
let _v2: _THREE.Vector2;
let _v3A: _THREE.Vector3;
let _v3B: _THREE.Vector3;
let _v3C: _THREE.Vector3;
let _cameraDirection: _THREE.Vector3;
let _xColumn: _THREE.Vector3;
let _yColumn: _THREE.Vector3;
let _zColumn: _THREE.Vector3;
let _deltaTarget: _THREE.Vector3;
let _deltaOffset: _THREE.Vector3;
let _sphericalA: _THREE.Spherical;
let _sphericalB: _THREE.Spherical;
let _box3A: _THREE.Box3;
let _box3B: _THREE.Box3;
let _sphere: _THREE.Sphere;
let _quaternionA: _THREE.Quaternion;
let _quaternionB: _THREE.Quaternion;
let _rotationMatrix: _THREE.Matrix4;
let _raycaster: _THREE.Raycaster;
export class CameraControls extends EventDispatcher {
/**
* Injects THREE as the dependency. You can then proceed to use CameraControls.
*
* e.g
* ```javascript
* CameraControls.install( { THREE: THREE } );
* ```
*
* Note: If you do not wish to use enter three.js to reduce file size(tree-shaking for example), make a subset to install.
*
* ```js
* import {
* Vector2,
* Vector3,
* Vector4,
* Quaternion,
* Matrix4,
* Spherical,
* Box3,
* Sphere,
* Raycaster,
* MathUtils,
* } from 'three';
*
* const subsetOfTHREE = {
* Vector2 : Vector2,
* Vector3 : Vector3,
* Vector4 : Vector4,
* Quaternion: Quaternion,
* Matrix4 : Matrix4,
* Spherical : Spherical,
* Box3 : Box3,
* Sphere : Sphere,
* Raycaster : Raycaster,
* };
* CameraControls.install( { THREE: subsetOfTHREE } );
* ```
* @category Statics
*/
static install( libs: { THREE: THREESubset } ): void {
THREE = libs.THREE;
_ORIGIN = Object.freeze( new THREE.Vector3( 0, 0, 0 ) );
_AXIS_Y = Object.freeze( new THREE.Vector3( 0, 1, 0 ) );
_AXIS_Z = Object.freeze( new THREE.Vector3( 0, 0, 1 ) );
_v2 = new THREE.Vector2();
_v3A = new THREE.Vector3();
_v3B = new THREE.Vector3();
_v3C = new THREE.Vector3();
_cameraDirection = new THREE.Vector3();
_xColumn = new THREE.Vector3();
_yColumn = new THREE.Vector3();
_zColumn = new THREE.Vector3();
_deltaTarget = new THREE.Vector3();
_deltaOffset = new THREE.Vector3();
_sphericalA = new THREE.Spherical();
_sphericalB = new THREE.Spherical();
_box3A = new THREE.Box3();
_box3B = new THREE.Box3();
_sphere = new THREE.Sphere();
_quaternionA = new THREE.Quaternion();
_quaternionB = new THREE.Quaternion();
_rotationMatrix = new THREE.Matrix4();
_raycaster = new THREE.Raycaster();
}
/**
* list all ACTIONs
* @category Statics
*/
static get ACTION(): typeof ACTION {
return ACTION;
}
/**
* Minimum vertical angle in radians.
* The angle has to be between `0` and `.maxPolarAngle` inclusive.
* The default value is `0`.
*
* e.g.
* ```
* cameraControls.maxPolarAngle = 0;
* ```
* @category Properties
*/
minPolarAngle = 0; // radians
/**
* Maximum vertical angle in radians.
* The angle has to be between `.maxPolarAngle` and `Math.PI` inclusive.
* The default value is `Math.PI`.
*
* e.g.
* ```
* cameraControls.maxPolarAngle = Math.PI;
* ```
* @category Properties
*/
maxPolarAngle = Math.PI; // radians
/**
* Minimum horizontal angle in radians.
* The angle has to be less than `.maxAzimuthAngle`.
* The default value is `- Infinity`.
*
* e.g.
* ```
* cameraControls.minAzimuthAngle = - Infinity;
* ```
* @category Properties
*/
minAzimuthAngle = - Infinity; // radians
/**
* Maximum horizontal angle in radians.
* The angle has to be greater than `.minAzimuthAngle`.
* The default value is `Infinity`.
*
* e.g.
* ```
* cameraControls.maxAzimuthAngle = Infinity;
* ```
* @category Properties
*/
maxAzimuthAngle = Infinity; // radians
// How far you can dolly in and out ( PerspectiveCamera only )
/**
* Minimum distance for dolly. The value must be higher than `0`. Default is `Number.EPSILON`.
* PerspectiveCamera only.
* @category Properties
*/
minDistance = Number.EPSILON;
/**
* Maximum distance for dolly. The value must be higher than `minDistance`. Default is `Infinity`.
* PerspectiveCamera only.
* @category Properties
*/
maxDistance = Infinity;
/**
* `true` to enable Infinity Dolly for wheel and pinch. Use this with `minDistance` and `maxDistance`
* If the Dolly distance is less (or over) than the `minDistance` (or `maxDistance`), `infinityDolly` will keep the distance and pushes the target position instead.
* @category Properties
*/
infinityDolly = false;
/**
* Minimum camera zoom.
* @category Properties
*/
minZoom = 0.01;
/**
* Maximum camera zoom.
* @category Properties
*/
maxZoom = Infinity;
/**
* Approximate time in seconds to reach the target. A smaller value will reach the target faster.
* @category Properties
*/
smoothTime = 0.25;
/**
* the smoothTime while dragging
* @category Properties
*/
draggingSmoothTime = 0.125;
/**
* Max transition speed in unit-per-seconds
* @category Properties
*/
maxSpeed = Infinity;
/**
* Speed of azimuth (horizontal) rotation.
* @category Properties
*/
azimuthRotateSpeed = 1.0;
/**
* Speed of polar (vertical) rotation.
* @category Properties
*/
polarRotateSpeed = 1.0;
/**
* Speed of mouse-wheel dollying.
* @category Properties
*/
dollySpeed = 1.0;
/**
* `true` to invert direction when dollying or zooming via drag
* @category Properties
*/
dollyDragInverted = false;
/**
* Speed of drag for truck and pedestal.
* @category Properties
*/
truckSpeed = 2.0;
/**
* `true` to enable Dolly-in to the mouse cursor coords.
* @category Properties
*/
dollyToCursor = false;
/**
* @category Properties
*/
dragToOffset = false;
/**
* The same as `.screenSpacePanning` in three.js's OrbitControls.
* @category Properties
*/
verticalDragToForward = false;
/**
* Friction ratio of the boundary.
* @category Properties
*/
boundaryFriction = 0.0;
/**
* Controls how soon the `rest` event fires as the camera slows.
* @category Properties
*/
restThreshold = 0.01;
/**
* An array of Meshes to collide with camera.
* Be aware colliderMeshes may decrease performance. The collision test uses 4 raycasters from the camera since the near plane has 4 corners.
* @category Properties
*/
colliderMeshes: _THREE.Object3D[] = [];
// button configs
/**
* User's mouse input config.
*
* | button to assign | behavior |
* | --------------------- | -------- |
* | `mouseButtons.left` | `CameraControls.ACTION.ROTATE`* \| `CameraControls.ACTION.TRUCK` \| `CameraControls.ACTION.OFFSET` \| `CameraControls.ACTION.DOLLY` \| `CameraControls.ACTION.ZOOM` \| `CameraControls.ACTION.NONE` |
* | `mouseButtons.right` | `CameraControls.ACTION.ROTATE` \| `CameraControls.ACTION.TRUCK`* \| `CameraControls.ACTION.OFFSET` \| `CameraControls.ACTION.DOLLY` \| `CameraControls.ACTION.ZOOM` \| `CameraControls.ACTION.NONE` |
* | `mouseButtons.wheel` ¹ | `CameraControls.ACTION.ROTATE` \| `CameraControls.ACTION.TRUCK` \| `CameraControls.ACTION.OFFSET` \| `CameraControls.ACTION.DOLLY` \| `CameraControls.ACTION.ZOOM` \| `CameraControls.ACTION.NONE` |
* | `mouseButtons.middle` ² | `CameraControls.ACTION.ROTATE` \| `CameraControls.ACTION.TRUCK` \| `CameraControls.ACTION.OFFSET` \| `CameraControls.ACTION.DOLLY`* \| `CameraControls.ACTION.ZOOM` \| `CameraControls.ACTION.NONE` |
*
* 1. Mouse wheel event for scroll "up/down" on mac "up/down/left/right"
* 2. Mouse click on wheel event "button"
* - \* is the default.
* - The default of `mouseButtons.wheel` is:
* - `DOLLY` for Perspective camera.
* - `ZOOM` for Orthographic camera, and can't set `DOLLY`.
* @category Properties
*/
mouseButtons: MouseButtons;
/**
* User's touch input config.
*
* | fingers to assign | behavior |
* | --------------------- | -------- |
* | `touches.one` | `CameraControls.ACTION.TOUCH_ROTATE`* \| `CameraControls.ACTION.TOUCH_TRUCK` \| `CameraControls.ACTION.TOUCH_OFFSET` \| `CameraControls.ACTION.DOLLY` | `CameraControls.ACTION.ZOOM` | `CameraControls.ACTION.NONE` |
* | `touches.two` | `ACTION.TOUCH_DOLLY_TRUCK` \| `ACTION.TOUCH_DOLLY_OFFSET` \| `ACTION.TOUCH_DOLLY_ROTATE` \| `ACTION.TOUCH_ZOOM_TRUCK` \| `ACTION.TOUCH_ZOOM_OFFSET` \| `ACTION.TOUCH_ZOOM_ROTATE` \| `ACTION.TOUCH_DOLLY` \| `ACTION.TOUCH_ZOOM` \| `CameraControls.ACTION.TOUCH_ROTATE` \| `CameraControls.ACTION.TOUCH_TRUCK` \| `CameraControls.ACTION.TOUCH_OFFSET` \| `CameraControls.ACTION.NONE` |
* | `touches.three` | `ACTION.TOUCH_DOLLY_TRUCK` \| `ACTION.TOUCH_DOLLY_OFFSET` \| `ACTION.TOUCH_DOLLY_ROTATE` \| `ACTION.TOUCH_ZOOM_TRUCK` \| `ACTION.TOUCH_ZOOM_OFFSET` \| `ACTION.TOUCH_ZOOM_ROTATE` \| `CameraControls.ACTION.TOUCH_ROTATE` \| `CameraControls.ACTION.TOUCH_TRUCK` \| `CameraControls.ACTION.TOUCH_OFFSET` \| `CameraControls.ACTION.NONE` |
*
* - \* is the default.
* - The default of `touches.two` and `touches.three` is:
* - `TOUCH_DOLLY_TRUCK` for Perspective camera.
* - `TOUCH_ZOOM_TRUCK` for Orthographic camera, and can't set `TOUCH_DOLLY_TRUCK` and `TOUCH_DOLLY`.
* @category Properties
*/
touches: Touches;
/**
* Force cancel user dragging.
* @category Methods
*/
// cancel will be overwritten in the constructor.
cancel: () => void = () => {};
/**
* Still an experimental feature.
* This could change at any time.
* @category Methods
*/
lockPointer: () => void;
/**
* Still an experimental feature.
* This could change at any time.
* @category Methods
*/
unlockPointer: () => void;
protected _enabled = true;
protected _camera: _THREE.PerspectiveCamera | _THREE.OrthographicCamera;
protected _yAxisUpSpace: _THREE.Quaternion;
protected _yAxisUpSpaceInverse: _THREE.Quaternion;
protected _state: ACTION = ACTION.NONE;
protected _domElement?: HTMLElement;
protected _viewport: _THREE.Vector4 | null = null;
// the location of focus, where the object orbits around
protected _target: _THREE.Vector3;
protected _targetEnd: _THREE.Vector3;
protected _focalOffset: _THREE.Vector3;
protected _focalOffsetEnd: _THREE.Vector3;
// rotation and dolly distance
protected _spherical: _THREE.Spherical;
protected _sphericalEnd: _THREE.Spherical;
protected _lastDistance: number;
protected _zoom: number;
protected _zoomEnd: number;
protected _lastZoom: number;
// reset
protected _cameraUp0: _THREE.Vector3;
protected _target0: _THREE.Vector3;
protected _position0: _THREE.Vector3;
protected _zoom0: number;
protected _focalOffset0: _THREE.Vector3;
protected _dollyControlCoord: _THREE.Vector2;
protected _changedDolly = 0;
protected _changedZoom = 0;
// collisionTest uses nearPlane. ( PerspectiveCamera only )
protected _nearPlaneCorners: [ _THREE.Vector3, _THREE.Vector3, _THREE.Vector3, _THREE.Vector3 ];
protected _hasRested = true;
protected _boundary: _THREE.Box3;
protected _boundaryEnclosesCamera = false;
protected _needsUpdate = true;
protected _updatedLastTime = false;
protected _elementRect = new DOMRect();
protected _isDragging = false;
protected _dragNeedsUpdate = true;
protected _activePointers: PointerInput[] = [];
protected _lockedPointer: PointerInput | null = null;
protected _interactiveArea = new DOMRect( 0, 0, 1, 1 );
// Use draggingSmoothTime over smoothTime while true.
// set automatically true on user-dragging start.
// set automatically false on programmable methods call.
protected _isUserControllingRotate: boolean = false;
protected _isUserControllingDolly: boolean = false;
protected _isUserControllingTruck: boolean = false;
protected _isUserControllingOffset: boolean = false;
protected _isUserControllingZoom: boolean = false;
protected _lastDollyDirection: DOLLY_DIRECTION = DOLLY_DIRECTION.NONE;
// velocities for smoothDamp
protected _thetaVelocity: Ref = { value: 0 };
protected _phiVelocity: Ref = { value: 0 };
protected _radiusVelocity: Ref = { value: 0 };
protected _targetVelocity: _THREE.Vector3 = new THREE.Vector3();
protected _focalOffsetVelocity: _THREE.Vector3 = new THREE.Vector3();
protected _zoomVelocity: Ref = { value: 0 };
/**
* Creates a `CameraControls` instance.
*
* Note:
* You **must install** three.js before using camera-controls. see [#install](#install)
* Not doing so will lead to runtime errors (`undefined` references to THREE).
*
* e.g.
* ```
* CameraControls.install( { THREE } );
* const cameraControls = new CameraControls( camera, domElement );
* ```
*
* @param camera A `THREE.PerspectiveCamera` or `THREE.OrthographicCamera` to be controlled.
* @param domElement A `HTMLElement` for the draggable area, usually `renderer.domElement`.
* @category Constructor
*/
constructor(
camera: _THREE.PerspectiveCamera | _THREE.OrthographicCamera,
domElement?: HTMLElement,
) {
super();
// Check if the user has installed THREE
if ( typeof THREE === 'undefined' ) {
console.error( 'camera-controls: `THREE` is undefined. You must first run `CameraControls.install( { THREE: THREE } )`. Check the docs for further information.' );
}
this._camera = camera;
this._yAxisUpSpace = new THREE.Quaternion().setFromUnitVectors( this._camera.up, _AXIS_Y );
this._yAxisUpSpaceInverse = this._yAxisUpSpace.clone().invert();
this._state = ACTION.NONE;
// the location
this._target = new THREE.Vector3();
this._targetEnd = this._target.clone();
this._focalOffset = new THREE.Vector3();
this._focalOffsetEnd = this._focalOffset.clone();
// rotation
this._spherical = new THREE.Spherical().setFromVector3( _v3A.copy( this._camera.position ).applyQuaternion( this._yAxisUpSpace ) );
this._sphericalEnd = this._spherical.clone();
this._lastDistance = this._spherical.radius;
this._zoom = this._camera.zoom;
this._zoomEnd = this._zoom;
this._lastZoom = this._zoom;
// collisionTest uses nearPlane.s
this._nearPlaneCorners = [
new THREE.Vector3(),
new THREE.Vector3(),
new THREE.Vector3(),
new THREE.Vector3(),
];
this._updateNearPlaneCorners();
// Target cannot move outside of this box
this._boundary = new THREE.Box3(
new THREE.Vector3( - Infinity, - Infinity, - Infinity ),
new THREE.Vector3( Infinity, Infinity, Infinity ),
);
// reset
this._cameraUp0 = this._camera.up.clone();
this._target0 = this._target.clone();
this._position0 = this._camera.position.clone();
this._zoom0 = this._zoom;
this._focalOffset0 = this._focalOffset.clone();
this._dollyControlCoord = new THREE.Vector2();
// configs
this.mouseButtons = {
left: ACTION.ROTATE,
middle: ACTION.DOLLY,
right: ACTION.TRUCK,
wheel:
isPerspectiveCamera( this._camera ) ? ACTION.DOLLY :
isOrthographicCamera( this._camera ) ? ACTION.ZOOM :
ACTION.NONE,
};
this.touches = {
one: ACTION.TOUCH_ROTATE,
two:
isPerspectiveCamera( this._camera ) ? ACTION.TOUCH_DOLLY_TRUCK :
isOrthographicCamera( this._camera ) ? ACTION.TOUCH_ZOOM_TRUCK :
ACTION.NONE,
three: ACTION.TOUCH_TRUCK,
};
const dragStartPosition = new THREE.Vector2() as _THREE.Vector2;
const lastDragPosition = new THREE.Vector2() as _THREE.Vector2;
const dollyStart = new THREE.Vector2() as _THREE.Vector2;
const onPointerDown = ( event: PointerEvent ) => {
if ( ! this._enabled || ! this._domElement ) return;
if (
this._interactiveArea.left !== 0 ||
this._interactiveArea.top !== 0 ||
this._interactiveArea.width !== 1 ||
this._interactiveArea.height !== 1
) {
const elRect = this._domElement.getBoundingClientRect();
const left = event.clientX / elRect.width;
const top = event.clientY / elRect.height;
// check if the interactiveArea contains the drag start position.
if (
left < this._interactiveArea.left ||
left > this._interactiveArea.right ||
top < this._interactiveArea.top ||
top > this._interactiveArea.bottom
) return;
}
// Don't call `event.preventDefault()` on the pointerdown event
// to keep receiving pointermove evens outside dragging iframe
// https://taye.me/blog/tips/2015/11/16/mouse-drag-outside-iframe/
const mouseButton =
event.pointerType !== 'mouse' ? null :
( event.buttons & MOUSE_BUTTON.LEFT ) === MOUSE_BUTTON.LEFT ? MOUSE_BUTTON.LEFT :
( event.buttons & MOUSE_BUTTON.MIDDLE ) === MOUSE_BUTTON.MIDDLE ? MOUSE_BUTTON.MIDDLE :
( event.buttons & MOUSE_BUTTON.RIGHT ) === MOUSE_BUTTON.RIGHT ? MOUSE_BUTTON.RIGHT :
null;
if ( mouseButton !== null ) {
const zombiePointer = this._findPointerByMouseButton( mouseButton );
zombiePointer && this._disposePointer( zombiePointer );
}
if ( ( event.buttons & MOUSE_BUTTON.LEFT ) === MOUSE_BUTTON.LEFT && this._lockedPointer ) return;
const pointer = {
pointerId: event.pointerId,
clientX: event.clientX,
clientY: event.clientY,
deltaX: 0,
deltaY: 0,
mouseButton,
};
this._activePointers.push( pointer );
// eslint-disable-next-line no-undef
this._domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, { passive: false } as AddEventListenerOptions );
this._domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp );
this._domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove, { passive: false } );
this._domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp );
this._isDragging = true;
startDragging( event );
};
const onPointerMove = ( event: PointerEvent ) => {
if ( event.cancelable ) event.preventDefault();
const pointerId = event.pointerId;
const pointer = this._lockedPointer || this._findPointerById( pointerId );
if ( ! pointer ) return;
pointer.clientX = event.clientX;
pointer.clientY = event.clientY;
pointer.deltaX = event.movementX;
pointer.deltaY = event.movementY;
this._state = 0;
if ( event.pointerType === 'touch' ) {
switch ( this._activePointers.length ) {
case 1:
this._state = this.touches.one;
break;
case 2:
this._state = this.touches.two;
break;
case 3:
this._state = this.touches.three;
break;
}
} else {
if (
( ! this._isDragging && this._lockedPointer ) ||
this._isDragging && ( event.buttons & MOUSE_BUTTON.LEFT ) === MOUSE_BUTTON.LEFT
) {
this._state = this._state | this.mouseButtons.left;
}
if ( this._isDragging && ( event.buttons & MOUSE_BUTTON.MIDDLE ) === MOUSE_BUTTON.MIDDLE ) {
this._state = this._state | this.mouseButtons.middle;
}
if ( this._isDragging && ( event.buttons & MOUSE_BUTTON.RIGHT ) === MOUSE_BUTTON.RIGHT ) {
this._state = this._state | this.mouseButtons.right;
}
}
dragging();
};
const onPointerUp = ( event: PointerEvent ) => {
const pointer = this._findPointerById( event.pointerId );
if ( pointer && pointer === this._lockedPointer ) return;
pointer && this._disposePointer( pointer );
if ( event.pointerType === 'touch' ) {
switch ( this._activePointers.length ) {
case 0:
this._state = ACTION.NONE;
break;
case 1:
this._state = this.touches.one;
break;
case 2:
this._state = this.touches.two;
break;
case 3:
this._state = this.touches.three;
break;
}
} else {
this._state = ACTION.NONE;
}
endDragging();
};
let lastScrollTimeStamp = - 1;
const onMouseWheel = ( event: WheelEvent ): void => {
if ( ! this._domElement ) return;
if ( ! this._enabled || this.mouseButtons.wheel === ACTION.NONE ) return;
if (
this._interactiveArea.left !== 0 ||
this._interactiveArea.top !== 0 ||
this._interactiveArea.width !== 1 ||
this._interactiveArea.height !== 1
) {
const elRect = this._domElement.getBoundingClientRect();
const left = event.clientX / elRect.width;
const top = event.clientY / elRect.height;
// check if the interactiveArea contains the drag start position.
if (
left < this._interactiveArea.left ||
left > this._interactiveArea.right ||
top < this._interactiveArea.top ||
top > this._interactiveArea.bottom
) return;
}
event.preventDefault();
if (
this.dollyToCursor ||
this.mouseButtons.wheel === ACTION.ROTATE ||
this.mouseButtons.wheel === ACTION.TRUCK
) {
const now = performance.now();
// only need to fire this at scroll start.
if ( lastScrollTimeStamp - now < 1000 ) this._getClientRect( this._elementRect );
lastScrollTimeStamp = now;
}
// Ref: https://github.com/cedricpinson/osgjs/blob/00e5a7e9d9206c06fdde0436e1d62ab7cb5ce853/sources/osgViewer/input/source/InputSourceMouse.js#L89-L103
const deltaYFactor = isMac ? - 1 : - 3;
const delta = ( event.deltaMode === 1 ) ? event.deltaY / deltaYFactor : event.deltaY / ( deltaYFactor * 10 );
const x = this.dollyToCursor ? ( event.clientX - this._elementRect.x ) / this._elementRect.width * 2 - 1 : 0;
const y = this.dollyToCursor ? ( event.clientY - this._elementRect.y ) / this._elementRect.height * - 2 + 1 : 0;
switch ( this.mouseButtons.wheel ) {
case ACTION.ROTATE: {
this._rotateInternal( event.deltaX, event.deltaY );
this._isUserControllingRotate = true;
break;
}
case ACTION.TRUCK: {
this._truckInternal( event.deltaX, event.deltaY, false );
this._isUserControllingTruck = true;
break;
}
case ACTION.OFFSET: {
this._truckInternal( event.deltaX, event.deltaY, true );
this._isUserControllingOffset = true;
break;
}
case ACTION.DOLLY: {
this._dollyInternal( - delta, x, y );
this._isUserControllingDolly = true;
break;
}
case ACTION.ZOOM: {
this._zoomInternal( - delta, x, y );
this._isUserControllingZoom = true;
break;
}
}
this.dispatchEvent( { type: 'control' } );
};
const onContextMenu = ( event: Event ): void => {
if ( ! this._domElement || ! this._enabled ) return;
// contextmenu event is fired right after pointerdown
// remove attached handlers and active pointer, if interrupted by contextmenu.
if ( this.mouseButtons.right === CameraControls.ACTION.NONE ) {
const pointerId = event instanceof PointerEvent ? event.pointerId : 0;
const pointer = this._findPointerById( pointerId );
pointer && this._disposePointer( pointer );
// eslint-disable-next-line no-undef
this._domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, { passive: false } as AddEventListenerOptions );
this._domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp );
return;
}
event.preventDefault();
};
const startDragging = ( event?: PointerEvent ): void => {
if ( ! this._enabled ) return;
extractClientCoordFromEvent( this._activePointers, _v2 );
this._getClientRect( this._elementRect );
dragStartPosition.copy( _v2 );
lastDragPosition.copy( _v2 );
const isMultiTouch = this._activePointers.length >= 2;
if ( isMultiTouch ) {
// 2 finger pinch
const dx = _v2.x - this._activePointers[ 1 ].clientX;
const dy = _v2.y - this._activePointers[ 1 ].clientY;
const distance = Math.sqrt( dx * dx + dy * dy );
dollyStart.set( 0, distance );
// center coords of 2 finger truck
const x = ( this._activePointers[ 0 ].clientX + this._activePointers[ 1 ].clientX ) * 0.5;
const y = ( this._activePointers[ 0 ].clientY + this._activePointers[ 1 ].clientY ) * 0.5;
lastDragPosition.set( x, y );
}
this._state = 0;
if ( ! event ) {
if ( this._lockedPointer ) this._state = this._state | this.mouseButtons.left;
} else if ( 'pointerType' in event && event.pointerType === 'touch' ) {
switch ( this._activePointers.length ) {
case 1:
this._state = this.touches.one;
break;
case 2:
this._state = this.touches.two;
break;
case 3:
this._state = this.touches.three;
break;
}
} else {
if ( ! this._lockedPointer && ( event.buttons & MOUSE_BUTTON.LEFT ) === MOUSE_BUTTON.LEFT ) {
this._state = this._state | this.mouseButtons.left;
}
if ( ( event.buttons & MOUSE_BUTTON.MIDDLE ) === MOUSE_BUTTON.MIDDLE ) {
this._state = this._state | this.mouseButtons.middle;
}
if ( ( event.buttons & MOUSE_BUTTON.RIGHT ) === MOUSE_BUTTON.RIGHT ) {
this._state = this._state | this.mouseButtons.right;
}
}
// stop current movement on drag start
if (
( this._state & ACTION.ROTATE ) === ACTION.ROTATE ||
( this._state & ACTION.TOUCH_ROTATE ) === ACTION.TOUCH_ROTATE ||
( this._state & ACTION.TOUCH_DOLLY_ROTATE ) === ACTION.TOUCH_DOLLY_ROTATE ||
( this._state & ACTION.TOUCH_ZOOM_ROTATE ) === ACTION.TOUCH_ZOOM_ROTATE
) {
this._sphericalEnd.theta = this._spherical.theta;
this._sphericalEnd.phi = this._spherical.phi;
this._thetaVelocity.value = 0;
this._phiVelocity.value = 0;
}
if (
( this._state & ACTION.TRUCK ) === ACTION.TRUCK ||
( this._state & ACTION.TOUCH_TRUCK ) === ACTION.TOUCH_TRUCK ||
( this._state & ACTION.TOUCH_DOLLY_TRUCK ) === ACTION.TOUCH_DOLLY_TRUCK ||
( this._state & ACTION.TOUCH_ZOOM_TRUCK ) === ACTION.TOUCH_ZOOM_TRUCK
) {
this._targetEnd.copy( this._target );
this._targetVelocity.set( 0, 0, 0 );
}
if (
( this._state & ACTION.DOLLY ) === ACTION.DOLLY ||
( this._state & ACTION.TOUCH_DOLLY ) === ACTION.TOUCH_DOLLY ||
( this._state & ACTION.TOUCH_DOLLY_TRUCK ) === ACTION.TOUCH_DOLLY_TRUCK ||
( this._state & ACTION.TOUCH_DOLLY_OFFSET ) === ACTION.TOUCH_DOLLY_OFFSET ||
( this._state & ACTION.TOUCH_DOLLY_ROTATE ) === ACTION.TOUCH_DOLLY_ROTATE
) {
this._sphericalEnd.radius = this._spherical.radius;
this._radiusVelocity.value = 0;
}
if (
( this._state & ACTION.ZOOM ) === ACTION.ZOOM ||
( this._state & ACTION.TOUCH_ZOOM ) === ACTION.TOUCH_ZOOM ||
( this._state & ACTION.TOUCH_ZOOM_TRUCK ) === ACTION.TOUCH_ZOOM_TRUCK ||
( this._state & ACTION.TOUCH_ZOOM_OFFSET ) === ACTION.TOUCH_ZOOM_OFFSET ||
( this._state & ACTION.TOUCH_ZOOM_ROTATE ) === ACTION.TOUCH_ZOOM_ROTATE
) {
this._zoomEnd = this._zoom;
this._zoomVelocity.value = 0;
}
if (
( this._state & ACTION.OFFSET ) === ACTION.OFFSET ||
( this._state & ACTION.TOUCH_OFFSET ) === ACTION.TOUCH_OFFSET ||
( this._state & ACTION.TOUCH_DOLLY_OFFSET ) === ACTION.TOUCH_DOLLY_OFFSET ||
( this._state & ACTION.TOUCH_ZOOM_OFFSET ) === ACTION.TOUCH_ZOOM_OFFSET
) {
this._focalOffsetEnd.copy( this._focalOffset );
this._focalOffsetVelocity.set( 0, 0, 0 );
}
this.dispatchEvent( { type: 'controlstart' } );
};
const dragging = (): void => {
if ( ! this._enabled || ! this._dragNeedsUpdate ) return;
this._dragNeedsUpdate = false;
extractClientCoordFromEvent( this._activePointers, _v2 );
// When pointer lock is enabled clientX, clientY, screenX, and screenY remain 0.
// If pointer lock is enabled, use the Delta directory, and assume active-pointer is not multiple.
const isPointerLockActive = this._domElement && this._domElement.ownerDocument.pointerLockElement === this._domElement;
const lockedPointer = isPointerLockActive ? this._lockedPointer || this._activePointers[ 0 ] : null;
const deltaX = lockedPointer ? - lockedPointer.deltaX : lastDragPosition.x - _v2.x;