fireball/lib/audio/AudioListener.js
2018-12-25 17:29:22 +03:30

136 lines
2.9 KiB
JavaScript

/**
* @author mrdoob / http://mrdoob.com/
*/
import { Vector3 } from '../math/Vector3.js';
import { Quaternion } from '../math/Quaternion.js';
import { Object3D } from '../core/Object3D.js';
import { AudioContext } from './AudioContext.js';
function AudioListener() {
Object3D.call( this );
this.type = 'AudioListener';
this.context = AudioContext.getContext();
this.gain = this.context.createGain();
this.gain.connect( this.context.destination );
this.filter = null;
}
AudioListener.prototype = Object.assign( Object.create( Object3D.prototype ), {
constructor: AudioListener,
getInput: function () {
return this.gain;
},
removeFilter: function ( ) {
if ( this.filter !== null ) {
this.gain.disconnect( this.filter );
this.filter.disconnect( this.context.destination );
this.gain.connect( this.context.destination );
this.filter = null;
}
return this;
},
getFilter: function () {
return this.filter;
},
setFilter: function ( value ) {
if ( this.filter !== null ) {
this.gain.disconnect( this.filter );
this.filter.disconnect( this.context.destination );
} else {
this.gain.disconnect( this.context.destination );
}
this.filter = value;
this.gain.connect( this.filter );
this.filter.connect( this.context.destination );
return this;
},
getMasterVolume: function () {
return this.gain.gain.value;
},
setMasterVolume: function ( value ) {
this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );
return this;
},
updateMatrixWorld: ( function () {
var position = new Vector3();
var quaternion = new Quaternion();
var scale = new Vector3();
var orientation = new Vector3();
return function updateMatrixWorld( force ) {
Object3D.prototype.updateMatrixWorld.call( this, force );
var listener = this.context.listener;
var up = this.up;
this.matrixWorld.decompose( position, quaternion, scale );
orientation.set( 0, 0, - 1 ).applyQuaternion( quaternion );
if ( listener.positionX ) {
listener.positionX.setValueAtTime( position.x, this.context.currentTime );
listener.positionY.setValueAtTime( position.y, this.context.currentTime );
listener.positionZ.setValueAtTime( position.z, this.context.currentTime );
listener.forwardX.setValueAtTime( orientation.x, this.context.currentTime );
listener.forwardY.setValueAtTime( orientation.y, this.context.currentTime );
listener.forwardZ.setValueAtTime( orientation.z, this.context.currentTime );
listener.upX.setValueAtTime( up.x, this.context.currentTime );
listener.upY.setValueAtTime( up.y, this.context.currentTime );
listener.upZ.setValueAtTime( up.z, this.context.currentTime );
} else {
listener.setPosition( position.x, position.y, position.z );
listener.setOrientation( orientation.x, orientation.y, orientation.z, up.x, up.y, up.z );
}
};
} )()
} );
export { AudioListener };