File: //var/www/aspa/three/addons/controls/FirstPersonControls.js
import {
MathUtils,
Spherical,
Vector3
} from 'three';
const _lookDirection = new Vector3();
const _spherical = new Spherical();
const _target = new Vector3();
class FirstPersonControls {
constructor( object, domElement ) {
this.object = object;
this.domElement = domElement;
// API
this.enabled = true;
this.movementSpeed = 1.0;
this.lookSpeed = 0.005;
this.lookVertical = true;
this.autoForward = false;
this.activeLook = true;
this.heightSpeed = false;
this.heightCoef = 1.0;
this.heightMin = 0.0;
this.heightMax = 1.0;
this.constrainVertical = false;
this.verticalMin = 0;
this.verticalMax = Math.PI;
this.mouseDragOn = false;
// internals
this.autoSpeedFactor = 0.0;
this.pointerX = 0;
this.pointerY = 0;
this.moveForward = false;
this.moveBackward = false;
this.moveLeft = false;
this.moveRight = false;
this.viewHalfX = 0;
this.viewHalfY = 0;
// private variables
let lat = 0;
let lon = 0;
//
this.handleResize = function () {
if ( this.domElement === document ) {
this.viewHalfX = window.innerWidth / 2;
this.viewHalfY = window.innerHeight / 2;
} else {
this.viewHalfX = this.domElement.offsetWidth / 2;
this.viewHalfY = this.domElement.offsetHeight / 2;
}
};
this.onPointerDown = function ( event ) {
if ( this.domElement !== document ) {
this.domElement.focus();
}
if ( this.activeLook ) {
switch ( event.button ) {
case 0: this.moveForward = true; break;
case 2: this.moveBackward = true; break;
}
}
this.mouseDragOn = true;
};
this.onPointerUp = function ( event ) {
if ( this.activeLook ) {
switch ( event.button ) {
case 0: this.moveForward = false; break;
case 2: this.moveBackward = false; break;
}
}
this.mouseDragOn = false;
};
this.onPointerMove = function ( event ) {
if ( this.domElement === document ) {
this.pointerX = event.pageX - this.viewHalfX;
this.pointerY = event.pageY - this.viewHalfY;
} else {
this.pointerX = event.pageX - this.domElement.offsetLeft - this.viewHalfX;
this.pointerY = event.pageY - this.domElement.offsetTop - this.viewHalfY;
}
};
this.onKeyDown = function ( event ) {
switch ( event.code ) {
case 'ArrowUp':
case 'KeyW': this.moveForward = true; break;
case 'ArrowLeft':
case 'KeyA': this.moveLeft = true; break;
case 'ArrowDown':
case 'KeyS': this.moveBackward = true; break;
case 'ArrowRight':
case 'KeyD': this.moveRight = true; break;
case 'KeyR': this.moveUp = true; break;
case 'KeyF': this.moveDown = true; break;
}
};
this.onKeyUp = function ( event ) {
switch ( event.code ) {
case 'ArrowUp':
case 'KeyW': this.moveForward = false; break;
case 'ArrowLeft':
case 'KeyA': this.moveLeft = false; break;
case 'ArrowDown':
case 'KeyS': this.moveBackward = false; break;
case 'ArrowRight':
case 'KeyD': this.moveRight = false; break;
case 'KeyR': this.moveUp = false; break;
case 'KeyF': this.moveDown = false; break;
}
};
this.lookAt = function ( x, y, z ) {
if ( x.isVector3 ) {
_target.copy( x );
} else {
_target.set( x, y, z );
}
this.object.lookAt( _target );
setOrientation( this );
return this;
};
this.update = function () {
const targetPosition = new Vector3();
return function update( delta ) {
if ( this.enabled === false ) return;
if ( this.heightSpeed ) {
const y = MathUtils.clamp( this.object.position.y, this.heightMin, this.heightMax );
const heightDelta = y - this.heightMin;
this.autoSpeedFactor = delta * ( heightDelta * this.heightCoef );
} else {
this.autoSpeedFactor = 0.0;
}
const actualMoveSpeed = delta * this.movementSpeed;
if ( this.moveForward || ( this.autoForward && ! this.moveBackward ) ) this.object.translateZ( - ( actualMoveSpeed + this.autoSpeedFactor ) );
if ( this.moveBackward ) this.object.translateZ( actualMoveSpeed );
if ( this.moveLeft ) this.object.translateX( - actualMoveSpeed );
if ( this.moveRight ) this.object.translateX( actualMoveSpeed );
if ( this.moveUp ) this.object.translateY( actualMoveSpeed );
if ( this.moveDown ) this.object.translateY( - actualMoveSpeed );
let actualLookSpeed = delta * this.lookSpeed;
if ( ! this.activeLook ) {
actualLookSpeed = 0;
}
let verticalLookRatio = 1;
if ( this.constrainVertical ) {
verticalLookRatio = Math.PI / ( this.verticalMax - this.verticalMin );
}
lon -= this.pointerX * actualLookSpeed;
if ( this.lookVertical ) lat -= this.pointerY * actualLookSpeed * verticalLookRatio;
lat = Math.max( - 85, Math.min( 85, lat ) );
let phi = MathUtils.degToRad( 90 - lat );
const theta = MathUtils.degToRad( lon );
if ( this.constrainVertical ) {
phi = MathUtils.mapLinear( phi, 0, Math.PI, this.verticalMin, this.verticalMax );
}
const position = this.object.position;
targetPosition.setFromSphericalCoords( 1, phi, theta ).add( position );
this.object.lookAt( targetPosition );
};
}();
this.dispose = function () {
this.domElement.removeEventListener( 'contextmenu', contextmenu );
this.domElement.removeEventListener( 'pointerdown', _onPointerDown );
this.domElement.removeEventListener( 'pointermove', _onPointerMove );
this.domElement.removeEventListener( 'pointerup', _onPointerUp );
window.removeEventListener( 'keydown', _onKeyDown );
window.removeEventListener( 'keyup', _onKeyUp );
};
const _onPointerMove = this.onPointerMove.bind( this );
const _onPointerDown = this.onPointerDown.bind( this );
const _onPointerUp = this.onPointerUp.bind( this );
const _onKeyDown = this.onKeyDown.bind( this );
const _onKeyUp = this.onKeyUp.bind( this );
this.domElement.addEventListener( 'contextmenu', contextmenu );
this.domElement.addEventListener( 'pointerdown', _onPointerDown );
this.domElement.addEventListener( 'pointermove', _onPointerMove );
this.domElement.addEventListener( 'pointerup', _onPointerUp );
window.addEventListener( 'keydown', _onKeyDown );
window.addEventListener( 'keyup', _onKeyUp );
function setOrientation( controls ) {
const quaternion = controls.object.quaternion;
_lookDirection.set( 0, 0, - 1 ).applyQuaternion( quaternion );
_spherical.setFromVector3( _lookDirection );
lat = 90 - MathUtils.radToDeg( _spherical.phi );
lon = MathUtils.radToDeg( _spherical.theta );
}
this.handleResize();
setOrientation( this );
}
}
function contextmenu( event ) {
event.preventDefault();
}
export { FirstPersonControls };