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<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8" />
<base href="../../../" />
<script src="page.js"></script>
<link type="text/css" rel="stylesheet" href="page.css" />
</head>
<body>
[page:Object3D] &rarr; [page:Audio] &rarr;
<h1>[name]</h1>
<p class="desc">
创建一个位置相关的音频对象.<br /><br />
使用了[link:https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API Web Audio API].
</p>
<h2>代码示例</h2>
<code>
// create an AudioListener and add it to the camera
const listener = new THREE.AudioListener();
camera.add( listener );
// create the PositionalAudio object (passing in the listener)
const sound = new THREE.PositionalAudio( listener );
// load a sound and set it as the PositionalAudio object's buffer
const audioLoader = new THREE.AudioLoader();
audioLoader.load( 'sounds/song.ogg', function( buffer ) {
sound.setBuffer( buffer );
sound.setRefDistance( 20 );
sound.play();
});
// create an object for the sound to play from
const sphere = new THREE.SphereGeometry( 20, 32, 16 );
const material = new THREE.MeshPhongMaterial( { color: 0xff2200 } );
const mesh = new THREE.Mesh( sphere, material );
scene.add( mesh );
// finally add the sound to the mesh
mesh.add( sound );
</code>
<h2>例子</h2>
<p>
[example:webaudio_orientation webaudio / orientation ]<br />
[example:webaudio_sandbox webaudio / sandbox ]<br />
[example:webaudio_timing webaudio / timing ]
</p>
<h2>构造函数</h2>
<h3>[name]( [param:AudioListener listener] )</h3>
<p>
listener — (必须) [page:AudioListener AudioListener] 实例.
</p>
<h2>属性</h2>
<p>
[page:Audio Audio]类的继承属性.
</p>
<h3>[property:PannerNode panner]</h3>
<p>位置相关音频的[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode PannerNode].</p>
<h2>方法</h2>
<p>
[page:Audio Audio]类的继承方法.
</p>
<h3>[method:PannerNode getOutput]()</h3>
<p>
返回[page:PositionalAudio.panner panner].
</p>
<h3>[method:Float getRefDistance]()</h3>
<p>
返回[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/refDistance panner.refDistance]的值.
</p>
<h3>[method:this setRefDistance]( [param:Float value] )</h3>
<p>
设置[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/refDistance panner.refDistance]的值.
</p>
<h3>[method:Float getRolloffFactor]()</h3>
<p>
返回[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/rolloffFactor panner.rolloffFactor]的值.
</p>
<h3>[method:this setRolloffFactor]( [param:Float value] )</h3>
<p>
设置[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/rolloffFactor panner.rolloffFactor]的值.
</p>
<h3>[method:String getDistanceModel]()</h3>
<p>
返回[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/distanceModel panner.distanceModel]的值.
</p>
<h3>[method:this setDistanceModel]( [param:String value] )</h3>
<p>
设置[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/distanceModel panner.distanceModel]的值.
</p>
<h3>[method:Float getMaxDistance]()</h3>
<p>
返回[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/maxDistance panner.maxDistance]的值.
</p>
<h3>[method:this setMaxDistance]( [param:Float value] )</h3>
<p>
设置[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/maxDistance panner.maxDistance]的值.
</p>
<h3>[method:this setDirectionalCone]( [param:Float coneInnerAngle], [param:Float coneOuterAngle], [param:Float coneOuterGain] )</h3>
<p>
这个方法用来把环绕声音转换为定向声音[link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode directional sound].
</p>
<h2>Source</h2>
<p>
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
</p>
</body>
</html>