Documentation / scene / PCAGeometryCacheTrack

Class: PCAGeometryCacheTrack

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:39

Geometry cache track reconstructed from PCA bases and coefficients.

Extends

• AnimationTrack<PCAGeometryCacheState>

Constructors

Constructor

new PCAGeometryCacheTrack(data?, embedded?): PCAGeometryCacheTrack

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:52

Parameters

data?

Partial<PCAGeometryCacheTrackData>

embedded?

boolean

Returns

PCAGeometryCacheTrack

Overrides

AnimationTrack.constructor

Accessors

name

Get Signature

get name(): string

Defined in: libs/scene/src/animation/animationtrack.ts:45

Human-readable name of the track.

Returns

string

Set Signature

set name(val): void

Defined in: libs/scene/src/animation/animationtrack.ts:48

Parameters

val

string

Returns

void

Inherited from

AnimationTrack.name

---

embedded

Get Signature

get embedded(): boolean

Defined in: libs/scene/src/animation/animationtrack.ts:54

Whether this track is embedded (owned inline by a resource/container).

Returns

boolean

Inherited from

AnimationTrack.embedded

---

animation

Get Signature

get animation(): AnimationClip

Defined in: libs/scene/src/animation/animationtrack.ts:60

The AnimationClip that owns this track.

Returns

AnimationClip

Set Signature

set animation(ani): void

Defined in: libs/scene/src/animation/animationtrack.ts:63

Parameters

ani

AnimationClip

Returns

void

Inherited from

AnimationTrack.animation

---

target

Get Signature

get target(): string

Defined in: libs/scene/src/animation/animationtrack.ts:72

Logical target identifier for this track (optional metadata).

This does not affect application; it can be used by tooling or higher-level systems to label/group tracks.

Returns

string

Set Signature

set target(val): void

Defined in: libs/scene/src/animation/animationtrack.ts:75

Parameters

val

string

Returns

void

Inherited from

AnimationTrack.target

---

jointIndex

Get Signature

get jointIndex(): number

Defined in: libs/scene/src/animation/animationtrack.ts:81

Joint index if this track controls a joint, otherwise -1

Returns

number

Set Signature

set jointIndex(index): void

Defined in: libs/scene/src/animation/animationtrack.ts:84

Parameters

index

number

Returns

void

Inherited from

AnimationTrack.jointIndex

---

times

Get Signature

get times(): Float32Array<ArrayBufferLike>

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:77

Returns

Float32Array<ArrayBufferLike>

Set Signature

set times(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:81

Parameters

value

Float32Array

Returns

void

---

bounds

Get Signature

get bounds(): [number, number, number, number, number, number][]

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:85

Returns

[number, number, number, number, number, number][]

Set Signature

set bounds(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:89

Parameters

value

[number, number, number, number, number, number][]

Returns

void

---

positionMean

Get Signature

get positionMean(): Float32Array<ArrayBufferLike>

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:93

Returns

Float32Array<ArrayBufferLike>

Set Signature

set positionMean(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:105

Parameters

value

Float32Array

Returns

void

---

positionReference

Get Signature

get positionReference(): Float32Array<ArrayBufferLike>

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:97

Returns

Float32Array<ArrayBufferLike>

Set Signature

set positionReference(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:101

Parameters

value

Float32Array<ArrayBufferLike>

Returns

void

---

positionBases

Get Signature

get positionBases(): Float32Array<ArrayBufferLike>[]

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:116

Returns

Float32Array<ArrayBufferLike>[]

Set Signature

set positionBases(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:120

Parameters

value

Float32Array<ArrayBufferLike>[]

Returns

void

---

positionCoefficients

Get Signature

get positionCoefficients(): Float32Array<ArrayBufferLike>[]

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:124

Returns

Float32Array<ArrayBufferLike>[]

Set Signature

set positionCoefficients(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:128

Parameters

value

Float32Array<ArrayBufferLike>[]

Returns

void

---

normalMean

Get Signature

get normalMean(): Float32Array<ArrayBufferLike>

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:132

Returns

Float32Array<ArrayBufferLike>

Set Signature

set normalMean(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:136

Parameters

value

Float32Array<ArrayBufferLike>

Returns

void

---

normalBases

Get Signature

get normalBases(): Float32Array<ArrayBufferLike>[]

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:140

Returns

Float32Array<ArrayBufferLike>[]

Set Signature

set normalBases(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:144

Parameters

value

Float32Array<ArrayBufferLike>[]

Returns

void

---

normalCoefficients

Get Signature

get normalCoefficients(): Float32Array<ArrayBufferLike>[]

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:148

Returns

Float32Array<ArrayBufferLike>[]

Set Signature

set normalCoefficients(value): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:152

Parameters

value

Float32Array<ArrayBufferLike>[]

Returns

void

Methods

clone()

clone(): this

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:73

Clone this animation track

Returns

this

Overrides

AnimationTrack.clone

---

calculateState()

calculateState(_target, currentTime): GeometryCacheState

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:156

Compute the animation state at the specified time.

Implementations should be pure with respect to inputs: given the same target and currentTime, return the same StateType.

Parameters

_target

object

currentTime

number

Time cursor in seconds within the track's timeline.

Returns

GeometryCacheState

The computed state at currentTime.

Overrides

AnimationTrack.calculateState

---

applyState()

applyState(target, state): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:181

Apply a previously computed animation state to the target.

Parameters

target

object

The animated object to modify.

state

GeometryCacheState

The state to apply.

Returns

void

Overrides

AnimationTrack.applyState

---

mixState()

mixState(a, b, t): object

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:196

Blend two states into a new state using a weight.

Parameters

a

GeometryCacheState

First state.

b

GeometryCacheState

Second state.

t

number

Blend weight in [0, 1], where 0 yields a and 1 yields b.

Returns

object

The blended state.

positions

positions: Float32Array<ArrayBuffer>

normals

normals: Float32Array<ArrayBufferLike>

boundingBox

boundingBox: BoundingBox

Overrides

AnimationTrack.mixState

---

getBlendId()

getBlendId(): string

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:218

Get the blend identifier for this track.

Tracks with the same blend ID are considered compatible for blending on the same target channel/property.

Returns

string

An identifier used to group compatible tracks for blending.

Overrides

AnimationTrack.getBlendId

---

getDuration()

getDuration(): number

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:222

Get the intrinsic duration of this track in seconds.

Used by clips to determine overall clip duration and looping behavior.

Returns

number

Track duration (seconds).

Overrides

AnimationTrack.getDuration

---

reset()

reset(target): void

Defined in: libs/scene/src/animation/pca_geometry_cache_track.ts:226

Reset the track to its initial state for the given target.

Intended to stop playback and rewind the target to the first frame or default state.

Parameters

target

object

Returns

void

Overrides

AnimationTrack.reset