[page:Object3D] →

# [name]

This helper displays the directional cone of a [page:PositionalAudio].

## Example

[example:webaudio_orientation webaudio / orientation ]

## Code Example

`var positionalAudio = new THREE.PositionalAudio( listener ); positionalAudio.setDirectionalCone( 180, 230, 0.1 ); var helper = new PositionalAudioHelper( positionalAudio ); positionalAudio.add( helper );`

## Constructor

### [name]( [param:PositionalAudio audio], [param:Number range] )

[page:PositionalAudio audio] -- The [page:PositionalAudio] to be visualized.
[page:Number range] -- (optional) The range of the directional cone.
[page:Number divisionsInnerAngle] -- (optional) The amount of divisions of the inner part of the directional cone.
[page:Number divisionsOuterAngle] -- (optional) The amount of divisions of the outer part of the directional cone.

## Properties

See the base [page:Object3D] class for common properties.

### [property:PositionalAudio audio]

[page:PositionalAudio] to be visualized.

### [property:Number range]

The range of the directional cone.

### [property:Number divisionsInnerAngle]

The amount of divisions of the inner part of the directional cone.

### [property:Number divisionsOuterAngle]

The amount of divisions of the outer part of the directional cone.

## Methods

See the base [page:Object3D] class for common methods.

### [method:null dispose]()

Disposes of the helper.

### [method:null update]()

Updates the helper.

## Source

[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]