Class NumberTrack`Advanced`

Track for a number property, such as a node's x or a number field on your own subclass

Hierarchy (View Summary)

Track
- NumberTrack

Index

Constructors

Properties

interpolation label times values valueSize

Methods

blendInto evaluate

Constructors

constructor

new NumberTrack(options: Omit<TrackOptions, "valueSize">): NumberTrack
Parameters
- options: Omit<TrackOptions, "valueSize">
  Keyframes and target label
Returns NumberTrack

Overrides Track.constructor

Properties

interpolation

interpolation: InterpolationMode

Interpolation algorithm used between keyframes

label

label: string

The property this track drives; TrackOptions#label has the format

times

times: Float32Array

Keyframe times in seconds

values

values: Float32Array

Keyframe values; TrackOptions#values has the layout

`Readonly`valueSize

valueSize: number = 0

Number of numeric components in each sampled value

Methods

blendInto

blendInto(values: Float32Array, sample: Float32Array, t: number): void
Blends a sample in with the single-component lerp unrolled
Parameters
- values: Float32Array
  The running weighted average, updated in place
- sample: Float32Array
  The freshly evaluated value to blend in
- t: number
  Blend factor for sample against values
Returns void

Overrides Track.blendInto

evaluate

evaluate(
    time: number,
    index: number,
    target: Float32Array<ArrayBufferLike> | number[],
): number
Samples the track at a time, holding the first or last keyframe outside their range
Parameters
- time: number
  Time in seconds
- index: number
  Keyframe index this returned last time, which shortens the search; 0 always works
- target: Float32Array<ArrayBufferLike> | number[]
  Receives valueSize numbers
Returns number
The keyframe index to pass back as index next time

Inherited from Track.evaluate