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  3. FAnimationCompression_PerTrackUtils

FAnimationCompression_PerTrackUtils

This class contains helper methods for dealing with animations compressed with the per-track codec

API > API/Runtime > API/Runtime/Engine

References

   
Module Engine
Header /Engine/Source/Runtime/Engine/Public/AnimationCompression.h
Include #include "AnimationCompression.h"

Syntax

class FAnimationCompression_PerTrackUtils

Remarks

This class contains helper methods for dealing with animations compressed with the per-track codec

Functions

  Type Name Description
Public function Static uint16

CompressFixed16 ( float Value,
int32 Log2MaxValue
)

 Log2MaxValue of 0 => -1..1 Log2MaxValue of 7 => -128..128 Can be 0..15 Compresses a float into a signed fixed point number, which can range from the symmetrical values of -2^Log2MaxValue ..
Public function Static void

DecomposeHeader ( int32 Header,
int32& KeyFormat,
int32& NumKeys,
int32& FormatFlags
)

 Decomposes a header created with MakeHeader into three/four fields (two are still left packed into FormatFlags):
Public function Static void

DecomposeHeader ( int32 Header,
int32& KeyFormat,
int32& NumKeys,
int32& FormatFlags,
int32& BytesPerKey,
int32& FixedBytes
)

 Decomposes a header created with MakeHeader into three/four fields (two are still left packed into FormatFlags):
Public function Static float

DecompressFixed16 ( uint16 Value
)

 Decompresses a fixed point number encoded by ComrpessFixed16
Public function float

DecompressFixed16 ( uint16 Value
)

  
Public function Static void

DecompressRotation ( int32 Format,
int32 FormatFlags,
FQuat4f& Out,
const uint8*__restrict TopOfStream,
const uint8*__restrict KeyData
)

 Decompress a single rotation key from a single track that was compressed with the PerTrack codec (scalar)
Public function Static void

DecompressScale ( int32 Format,
int32 FormatFlags,
FVector3f& Out,
const uint8*__restrict TopOfStream,
const uint8*__restrict KeyData
)

 Decompress a single Scale key from a single track that was compressed with the PerTrack codec (scalar)
Public function Static void

DecompressTranslation ( int32 Format,
int32 FormatFlags,
FVector3f& Out,
const uint8*__restrict TopOfStream,
const uint8*__restrict KeyData
)

 Decompress a single translation key from a single track that was compressed with the PerTrack codec (scalar)
Public function Static void

GetAllSizesFromFormat ( int32 KeyFormat,
int32 FormatFlags,
int32& KeyComponentCount,
int32& KeyComponentSize,
int32& FixedComponentCount,
int32& FixedComponentSize
)

 Figures out the size of various parts of a compressed track from the format and format flags combo
Public function Static void

GetByteSizesFromFormat ( int32 KeyFormat,
int32 FormatFlags,
int32& BytesPerKey,
int32& FixedBytes
)

  
Public function Static int32

GetKeyCountFromHeader ( int32 Header
)

 Extracts the number of keys from a header created by MakeHeader
Public function Static int32

MakeHeader ( const int32 NumKeys,
const int32 KeyFormat,
const int32 KeyFlags,
bool bReallyNeedsFrameTable
)

 Creates a header integer with four fields: NumKeys can be no more than 24 bits (positions 0..23) KeyFlags can be no more than 3 bits (positions 24..27) bReallyNeedsFrameTable is a single bit (position 27) KeyFormat can be no more than 4 bits (positions 31..28)

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