136 lines
2.4 KiB
JavaScript
136 lines
2.4 KiB
JavaScript
/**
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* @author mrdoob / http://mrdoob.com/
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*/
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THREE.Audio = function ( listener ) {
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THREE.Object3D.call( this );
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this.type = 'Audio';
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this.context = listener.context;
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this.source = this.context.createBufferSource();
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this.source.onended = this.onEnded.bind(this);
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this.gain = this.context.createGain();
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this.gain.connect( this.context.destination );
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this.panner = this.context.createPanner();
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this.panner.connect( this.gain );
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this.autoplay = false;
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this.startTime = 0;
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this.isPlaying = false;
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};
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THREE.Audio.prototype = Object.create( THREE.Object3D.prototype );
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THREE.Audio.prototype.constructor = THREE.Audio;
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THREE.Audio.prototype.load = function ( file ) {
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var scope = this;
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var request = new XMLHttpRequest();
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request.open( 'GET', file, true );
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request.responseType = 'arraybuffer';
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request.onload = function ( e ) {
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scope.context.decodeAudioData( this.response, function ( buffer ) {
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scope.source.buffer = buffer;
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if( scope.autoplay ) scope.play();
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} );
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};
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request.send();
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return this;
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};
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THREE.Audio.prototype.play = function () {
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if ( this.isPlaying === true ) {
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THREE.warn( 'THREE.Audio: Audio is already playing.' );
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return;
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}
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var source = this.context.createBufferSource();
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source.buffer = this.source.buffer;
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source.loop = this.source.loop;
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source.onended = this.source.onended;
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source.connect( this.panner );
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source.start( 0, this.startTime );
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this.isPlaying = true;
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this.source = source;
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};
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THREE.Audio.prototype.pause = function () {
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this.source.stop();
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this.startTime = this.context.currentTime;
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};
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THREE.Audio.prototype.stop = function () {
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this.source.stop();
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this.startTime = 0;
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};
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THREE.Audio.prototype.onEnded = function() {
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this.isPlaying = false;
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};
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THREE.Audio.prototype.setLoop = function ( value ) {
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this.source.loop = value;
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};
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THREE.Audio.prototype.setRefDistance = function ( value ) {
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this.panner.refDistance = value;
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};
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THREE.Audio.prototype.setRolloffFactor = function ( value ) {
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this.panner.rolloffFactor = value;
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};
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THREE.Audio.prototype.setVolume = function ( value ) {
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this.gain.gain.value = value;
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};
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THREE.Audio.prototype.updateMatrixWorld = ( function () {
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var position = new THREE.Vector3();
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return function ( force ) {
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THREE.Object3D.prototype.updateMatrixWorld.call( this, force );
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position.setFromMatrixPosition( this.matrixWorld );
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this.panner.setPosition( position.x, position.y, position.z );
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};
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} )();
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