Engine.AnimationCompressionAlgorithm_PerTrackCompression

Extends

AnimationCompressionAlgorithm_RemoveLinearKeys

Modifiers

hidecategories ( AnimationCompressionAlgorithm ) native ( Anim )

Keyframe reduction algorithm that removes keys which are linear interpolations of surrounding keys, as well as choosing the best bitwise compression for each track independently. Copyright 1998-2011 Epic Games, Inc. All Rights Reserved.

Core.Object
|   
+-- Engine.AnimationCompressionAlgorithm
   |   
   +-- Engine.AnimationCompressionAlgorithm_RemoveLinearKeys
      |   
      +-- Engine.AnimationCompressionAlgorithm_PerTrackCompression

PerReductionCachedData Source code

Cached metastructures used within DoReduction, tied to a particular sequence and mesh

PerturbationProbeSize Source code

How big of a perturbation should be made when probing error propagation

AdaptiveError

bUseAdaptiveError Source code

If TRUE, adjust the error thresholds based on the 'height' within the skeleton

bUseOverrideForEndEffectors Source code

If TRUE, uses MinEffectorDiff as the threhsold for end effectors

ParentingDivisor Source code

Reduces the error tolerance the further up the tree that a key occurs EffectiveErrorTolerance = Max(BaseErrorTolerance / Power(ParentingDivisor, Max(Height+Bias,0) * ParentingDivisorExponent), ZeroingThreshold) Only has an effect bUseAdaptiveError is TRUE

ParentingDivisorExponent Source code

Reduces the error tolerance the further up the tree that a key occurs EffectiveErrorTolerance = Max(BaseErrorTolerance / Power(ParentingDivisor, Max(Height+Bias,0) * ParentingDivisorExponent), ZeroingThreshold) Only has an effect bUseAdaptiveError is TRUE

TrackHeightBias Source code

A bias added to the track height before using it to calculate the adaptive error

AdaptiveError2

bUseAdaptiveError2 Source code

If true, the adaptive error system will determine how much error to allow for each track, based on the error introduced in end effectors due to errors in the track.

MaxErrorPerTrackRatio Source code

A fraction that determines how much of the total error budget can be introduced by any particular track

RotationErrorSourceRatio Source code

This ratio determines how much error in end effector rotation can come from a given track's rotation error or translation error. If 1, all of it must come from rotation error, if 0.5, half can come from each, and if 0.0, all must come from translation error.

TranslationErrorSourceRatio Source code

This ratio determines how much error in end effector translation can come from a given track's rotation error or translation error. If 1, all of it must come from rotation error, if 0.5, half can come from each, and if 0.0, all must come from translation error.

PerTrack

AllowedRotationFormats Source code

Which encoding formats is the per-track compressor allowed to try on rotation keys

AllowedTranslationFormats Source code

Which encoding formats is the per-track compressor allowed to try on translation keys

MaxAngleDiffBitwise Source code

Maximum angle difference to use when testing if an animation key may be removed. Lower values retain more keys, but yield less compression.

MaxPosDiffBitwise Source code

Maximum position difference to use when testing if an animation key may be removed. Lower values retain more keys, but yield less compression.

MaxZeroingThreshold Source code

Maximum threshold to use when replacing a component with zero. Lower values retain more keys, but yield less compression.

Resampling

bResampleAnimation Source code

If TRUE, resample the animation to ResampleFramerate frames per second

MinKeysForResampling Source code

Animations with fewer keys than MinKeysForResampling will not be resampled.

ResampledFramerate Source code

When bResampleAnimation is true, this defines the desired framerate

defaultproperties
{
	Description="Compress each track independently"
	
	
	MaxPosDiffBitwise = 0.007
	MaxAngleDiffBitwise = 0.002
	MaxZeroingThreshold = 0.0002

	
	ResampledFramerate = 15.0
	bResampleAnimation = FALSE
	MinKeysForResampling = 10;

	
	bRetarget = FALSE
	bActuallyFilterLinearKeys = FALSE

	
	bUseAdaptiveError = FALSE
	ParentingDivisor = 1.0
	ParentingDivisorExponent = 1.0
	TrackHeightBias = 1
	bUseOverrideForEndEffectors = FALSE


	
	bUseAdaptiveError2 = FALSE
	RotationErrorSourceRatio = 0.8
	TranslationErrorSourceRatio = 0.8
	MaxErrorPerTrackRatio = 0.3
	PerturbationProbeSize = 0.001


	
	AllowedRotationFormats[0] = ACF_Identity
	AllowedRotationFormats[1] = ACF_Fixed48NoW

	




	
	AllowedTranslationFormats[0] = ACF_Identity
	AllowedTranslationFormats[1] = ACF_IntervalFixed32NoW
	AllowedTranslationFormats[2] = ACF_Fixed48NoW
}