/**

* @author mrdoob / http://mrdoob.com/

*/

import { Vector3 } from '../math/Vector3';

import { Quaternion } from '../math/Quaternion';

import { Object3D } from '../core/Object3D';

import { getAudioContext } from './AudioContext';

function AudioListener() {

Object3D.call( this );

this.type = 'AudioListener';

this.context = getAudioContext();

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;

}

},

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 );

},

getMasterVolume: function () {

return this.gain.gain.value;

},

setMasterVolume: function ( value ) {

this.gain.gain.value = value;

},

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 );

listener.setPosition( position.x, position.y, position.z );

listener.setOrientation( orientation.x, orientation.y, orientation.z, up.x, up.y, up.z );

};

} )()

} );

export { AudioListener };