AnimationUtils

A class with various methods to assist with animations.

Static Methods

.convertArray( array : TypedArray | Array, type : TypedArray.constructor ) : TypedArray

Converts an array to a specific type

array

The array to convert.

type

The constructor of a type array.

Returns: The converted array

.flattenJSON( jsonKeys : Array.<number>, times : Array.<number>, values : Array.<number>, valuePropertyName : string )

Used for parsing AOS keyframe formats.

jsonKeys

A list of JSON keyframes.

times

This array will be filled with keyframe times by this method.

values

This array will be filled with keyframe values by this method.

valuePropertyName

The name of the property to use.

.getKeyframeOrder( times : Array.<number> ) : Array.<number>

Returns an array by which times and values can be sorted.

times

The keyframe time values.

Returns: The array.

.isTypedArray( object : any ) : boolean

Returns true if the given object is a typed array.

object

The object to check.

Returns: Whether the given object is a typed array.

.makeClipAdditive( targetClip : AnimationClip, referenceFrame : number, referenceClip : AnimationClip, fps : number ) : AnimationClip

Converts the keyframes of the given animation clip to an additive format.

targetClip

The clip to make additive.

referenceFrame

The reference frame.

Default is 0.

referenceClip

The reference clip.

Default is targetClip.

fps

The FPS.

Default is 30.

Returns: The updated clip which is now additive.

.sortedArray( values : Array.<number>, stride : number, order : Array.<number> ) : Array.<number>

Sorts the given array by the previously computed order via getKeyframeOrder().

values

The values to sort.

stride

The stride.

order

The sort order.

Returns: The sorted values.

.subclip( sourceClip : AnimationClip, name : string, startFrame : number, endFrame : number, fps : number ) : AnimationClip

Creates a new clip, containing only the segment of the original clip between the given frames.

sourceClip

The values to sort.

name

The name of the clip.

startFrame

The start frame.

endFrame

The end frame.

fps

The FPS.

Default is 30.

Returns: The new sub clip.

Source

src/animation/AnimationUtils.js