A Track of numeric keyframe 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.
[page:Constant interpolation] - the type of interpolation to use. See
[page:Animation Animation Constants] for possible values. Default is
[page:Animation InterpolateLinear].
See [page:KeyframeTrack] for inherited properties.
String 'number'.
See [page:KeyframeTrack] for inherited methods.
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]