[page:KeyframeTrack] →

# [name]

A Track of boolean keyframe values.

## Constructor

### [name]( [param:String name], [param:Array times], [param:Array values] )

[page:String name] - (required) identifier for the KeyframeTrack.
[page:Array times] - (required) array of keyframe times.
[page:Array values] - values for the keyframes at the times specified.

This keyframe track type has no interpolation parameter because the interpolation is always [page:Animation InterpolateDiscrete].

## Properties

See [page:KeyframeTrack] for inherited properties.

### [property:Constant DefaultInterpolation]

The default interpolation type to use. Only [page:Animation InterpolateDiscrete] is valid for this track type.

### [property:Array ValueBufferType]

A normal Array (no Float32Array in this case, unlike `ValueBufferType` of [page:KeyframeTrack]).

### [property:String ValueTypeName]

String 'bool'.

## Methods

See [page:KeyframeTrack] for inherited methods.

### [method:undefined InterpolantFactoryMethodLinear ]()

The value of this method here is 'undefined', as it does not make sense for discrete properties.

### [method:undefined InterpolantFactoryMethodSmooth ]()

The value of this method here is 'undefined', as it does not make sense for discrete properties.

## Source

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