( function () {
const _changeEvent = {
type: 'change'
};
class FlyControls extends THREE.EventDispatcher {
constructor( object, domElement ) {
super();
this.object = object;
this.domElement = domElement; // API
this.movementSpeed = 1.0;
this.rollSpeed = 0.005;
this.dragToLook = false;
this.autoForward = false; // disable default target object behavior
// internals
const scope = this;
const EPS = 0.000001;
const lastQuaternion = new THREE.Quaternion();
const lastPosition = new THREE.Vector3();
this.tmpQuaternion = new THREE.Quaternion();
this.mouseStatus = 0;
this.moveState = {
up: 0,
down: 0,
left: 0,
right: 0,
forward: 0,
back: 0,
pitchUp: 0,
pitchDown: 0,
yawLeft: 0,
yawRight: 0,
rollLeft: 0,
rollRight: 0
};
this.moveVector = new THREE.Vector3( 0, 0, 0 );
this.rotationVector = new THREE.Vector3( 0, 0, 0 );
this.keydown = function ( event ) {
if ( event.altKey ) {
return;
}
switch ( event.code ) {
case 'ShiftLeft':
case 'ShiftRight':
this.movementSpeedMultiplier = .1;
break;
case 'KeyW':
this.moveState.forward = 1;
break;
case 'KeyS':
this.moveState.back = 1;
break;
case 'KeyA':
this.moveState.left = 1;
break;
case 'KeyD':
this.moveState.right = 1;
break;
case 'KeyR':
this.moveState.up = 1;
break;
case 'KeyF':
this.moveState.down = 1;
break;
case 'ArrowUp':
this.moveState.pitchUp = 1;
break;
case 'ArrowDown':
this.moveState.pitchDown = 1;
break;
case 'ArrowLeft':
this.moveState.yawLeft = 1;
break;
case 'ArrowRight':
this.moveState.yawRight = 1;
break;
case 'KeyQ':
this.moveState.rollLeft = 1;
break;
case 'KeyE':
this.moveState.rollRight = 1;
break;
}
this.updateMovementVector();
this.updateRotationVector();
};
this.keyup = function ( event ) {
switch ( event.code ) {
case 'ShiftLeft':
case 'ShiftRight':
this.movementSpeedMultiplier = 1;
break;
case 'KeyW':
this.moveState.forward = 0;
break;
case 'KeyS':
this.moveState.back = 0;
break;
case 'KeyA':
this.moveState.left = 0;
break;
case 'KeyD':
this.moveState.right = 0;
break;
case 'KeyR':
this.moveState.up = 0;
break;
case 'KeyF':
this.moveState.down = 0;
break;
case 'ArrowUp':
this.moveState.pitchUp = 0;
break;
case 'ArrowDown':
this.moveState.pitchDown = 0;
break;
case 'ArrowLeft':
this.moveState.yawLeft = 0;
break;
case 'ArrowRight':
this.moveState.yawRight = 0;
break;
case 'KeyQ':
this.moveState.rollLeft = 0;
break;
case 'KeyE':
this.moveState.rollRight = 0;
break;
}
this.updateMovementVector();
this.updateRotationVector();
};
this.mousedown = function ( event ) {
if ( this.dragToLook ) {
this.mouseStatus ++;
} else {
switch ( event.button ) {
case 0:
this.moveState.forward = 1;
break;
case 2:
this.moveState.back = 1;
break;
}
this.updateMovementVector();
}
};
this.mousemove = function ( event ) {
if ( ! this.dragToLook || this.mouseStatus > 0 ) {
const container = this.getContainerDimensions();
const halfWidth = container.size[ 0 ] / 2;
const halfHeight = container.size[ 1 ] / 2;
this.moveState.yawLeft = - ( event.pageX - container.offset[ 0 ] - halfWidth ) / halfWidth;
this.moveState.pitchDown = ( event.pageY - container.offset[ 1 ] - halfHeight ) / halfHeight;
this.updateRotationVector();
}
};
this.mouseup = function ( event ) {
if ( this.dragToLook ) {
this.mouseStatus --;
this.moveState.yawLeft = this.moveState.pitchDown = 0;
} else {
switch ( event.button ) {
case 0:
this.moveState.forward = 0;
break;
case 2:
this.moveState.back = 0;
break;
}
this.updateMovementVector();
}
this.updateRotationVector();
};
this.update = function ( delta ) {
const moveMult = delta * scope.movementSpeed;
const rotMult = delta * scope.rollSpeed;
scope.object.translateX( scope.moveVector.x * moveMult );
scope.object.translateY( scope.moveVector.y * moveMult );
scope.object.translateZ( scope.moveVector.z * moveMult );
scope.tmpQuaternion.set( scope.rotationVector.x * rotMult, scope.rotationVector.y * rotMult, scope.rotationVector.z * rotMult, 1 ).normalize();
scope.object.quaternion.multiply( scope.tmpQuaternion );
if ( lastPosition.distanceToSquared( scope.object.position ) > EPS || 8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {
scope.dispatchEvent( _changeEvent );
lastQuaternion.copy( scope.object.quaternion );
lastPosition.copy( scope.object.position );
}
};
this.updateMovementVector = function () {
const forward = this.moveState.forward || this.autoForward && ! this.moveState.back ? 1 : 0;
this.moveVector.x = - this.moveState.left + this.moveState.right;
this.moveVector.y = - this.moveState.down + this.moveState.up;
this.moveVector.z = - forward + this.moveState.back; //console.log( 'move:', [ this.moveVector.x, this.moveVector.y, this.moveVector.z ] );
};
this.updateRotationVector = function () {
this.rotationVector.x = - this.moveState.pitchDown + this.moveState.pitchUp;
this.rotationVector.y = - this.moveState.yawRight + this.moveState.yawLeft;
this.rotationVector.z = - this.moveState.rollRight + this.moveState.rollLeft; //console.log( 'rotate:', [ this.rotationVector.x, this.rotationVector.y, this.rotationVector.z ] );
};
this.getContainerDimensions = function () {
if ( this.domElement != document ) {
return {
size: [ this.domElement.offsetWidth, this.domElement.offsetHeight ],
offset: [ this.domElement.offsetLeft, this.domElement.offsetTop ]
};
} else {
return {
size: [ window.innerWidth, window.innerHeight ],
offset: [ 0, 0 ]
};
}
};
this.dispose = function () {
this.domElement.removeEventListener( 'contextmenu', contextmenu );
this.domElement.removeEventListener( 'mousedown', _mousedown );
this.domElement.removeEventListener( 'mousemove', _mousemove );
this.domElement.removeEventListener( 'mouseup', _mouseup );
window.removeEventListener( 'keydown', _keydown );
window.removeEventListener( 'keyup', _keyup );
};
const _mousemove = this.mousemove.bind( this );
const _mousedown = this.mousedown.bind( this );
const _mouseup = this.mouseup.bind( this );
const _keydown = this.keydown.bind( this );
const _keyup = this.keyup.bind( this );
this.domElement.addEventListener( 'contextmenu', contextmenu );
this.domElement.addEventListener( 'mousemove', _mousemove );
this.domElement.addEventListener( 'mousedown', _mousedown );
this.domElement.addEventListener( 'mouseup', _mouseup );
window.addEventListener( 'keydown', _keydown );
window.addEventListener( 'keyup', _keyup );
this.updateMovementVector();
this.updateRotationVector();
}
}
function contextmenu( event ) {
event.preventDefault();
}
THREE.FlyControls = FlyControls;
} )();
