Doodle3D-Slicer/three.js-master/examples/js/controls/FirstPersonControls.js
2017-06-22 13:21:07 +02:00

279 lines
5.8 KiB
JavaScript
Executable File

/**
* @author mrdoob / http://mrdoob.com/
* @author alteredq / http://alteredqualia.com/
* @author paulirish / http://paulirish.com/
*/
THREE.FirstPersonControls = function ( object, domElement ) {
this.object = object;
this.target = new THREE.Vector3( 0, 0, 0 );
this.domElement = ( domElement !== undefined ) ? domElement : document;
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.autoSpeedFactor = 0.0;
this.mouseX = 0;
this.mouseY = 0;
this.lat = 0;
this.lon = 0;
this.phi = 0;
this.theta = 0;
this.moveForward = false;
this.moveBackward = false;
this.moveLeft = false;
this.moveRight = false;
this.mouseDragOn = false;
this.viewHalfX = 0;
this.viewHalfY = 0;
if ( this.domElement !== document ) {
this.domElement.setAttribute( 'tabindex', -1 );
}
//
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.onMouseDown = function ( event ) {
if ( this.domElement !== document ) {
this.domElement.focus();
}
event.preventDefault();
event.stopPropagation();
if ( this.activeLook ) {
switch ( event.button ) {
case 0: this.moveForward = true; break;
case 2: this.moveBackward = true; break;
}
}
this.mouseDragOn = true;
};
this.onMouseUp = function ( event ) {
event.preventDefault();
event.stopPropagation();
if ( this.activeLook ) {
switch ( event.button ) {
case 0: this.moveForward = false; break;
case 2: this.moveBackward = false; break;
}
}
this.mouseDragOn = false;
};
this.onMouseMove = function ( event ) {
if ( this.domElement === document ) {
this.mouseX = event.pageX - this.viewHalfX;
this.mouseY = event.pageY - this.viewHalfY;
} else {
this.mouseX = event.pageX - this.domElement.offsetLeft - this.viewHalfX;
this.mouseY = event.pageY - this.domElement.offsetTop - this.viewHalfY;
}
};
this.onKeyDown = function ( event ) {
//event.preventDefault();
switch ( event.keyCode ) {
case 38: /*up*/
case 87: /*W*/ this.moveForward = true; break;
case 37: /*left*/
case 65: /*A*/ this.moveLeft = true; break;
case 40: /*down*/
case 83: /*S*/ this.moveBackward = true; break;
case 39: /*right*/
case 68: /*D*/ this.moveRight = true; break;
case 82: /*R*/ this.moveUp = true; break;
case 70: /*F*/ this.moveDown = true; break;
}
};
this.onKeyUp = function ( event ) {
switch ( event.keyCode ) {
case 38: /*up*/
case 87: /*W*/ this.moveForward = false; break;
case 37: /*left*/
case 65: /*A*/ this.moveLeft = false; break;
case 40: /*down*/
case 83: /*S*/ this.moveBackward = false; break;
case 39: /*right*/
case 68: /*D*/ this.moveRight = false; break;
case 82: /*R*/ this.moveUp = false; break;
case 70: /*F*/ this.moveDown = false; break;
}
};
this.update = function( delta ) {
if ( this.enabled === false ) return;
if ( this.heightSpeed ) {
var y = THREE.Math.clamp( this.object.position.y, this.heightMin, this.heightMax );
var heightDelta = y - this.heightMin;
this.autoSpeedFactor = delta * ( heightDelta * this.heightCoef );
} else {
this.autoSpeedFactor = 0.0;
}
var 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 );
var actualLookSpeed = delta * this.lookSpeed;
if ( !this.activeLook ) {
actualLookSpeed = 0;
}
var verticalLookRatio = 1;
if ( this.constrainVertical ) {
verticalLookRatio = Math.PI / ( this.verticalMax - this.verticalMin );
}
this.lon += this.mouseX * actualLookSpeed;
if ( this.lookVertical ) this.lat -= this.mouseY * actualLookSpeed * verticalLookRatio;
this.lat = Math.max( - 85, Math.min( 85, this.lat ) );
this.phi = THREE.Math.degToRad( 90 - this.lat );
this.theta = THREE.Math.degToRad( this.lon );
if ( this.constrainVertical ) {
this.phi = THREE.Math.mapLinear( this.phi, 0, Math.PI, this.verticalMin, this.verticalMax );
}
var targetPosition = this.target,
position = this.object.position;
targetPosition.x = position.x + 100 * Math.sin( this.phi ) * Math.cos( this.theta );
targetPosition.y = position.y + 100 * Math.cos( this.phi );
targetPosition.z = position.z + 100 * Math.sin( this.phi ) * Math.sin( this.theta );
this.object.lookAt( targetPosition );
};
this.domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false );
this.domElement.addEventListener( 'mousemove', bind( this, this.onMouseMove ), false );
this.domElement.addEventListener( 'mousedown', bind( this, this.onMouseDown ), false );
this.domElement.addEventListener( 'mouseup', bind( this, this.onMouseUp ), false );
window.addEventListener( 'keydown', bind( this, this.onKeyDown ), false );
window.addEventListener( 'keyup', bind( this, this.onKeyUp ), false );
function bind( scope, fn ) {
return function () {
fn.apply( scope, arguments );
};
};
this.handleResize();
};