1. Epic GamesDeveloper
  3. UGeometryCacheTrackStreamable

UGeometryCacheTrackStreamable

Derived GeometryCacheTrack class, used for Transform animation.

API > API/Plugins > API/Plugins/GeometryCache

Inheritance Hierarchy

References

   
Module GeometryCache
Header /Engine/Plugins/Runtime/GeometryCache/Source/GeometryCache/Classes/GeometryCacheTrackStreamable.h
Include #include "GeometryCacheTrackStreamable.h"

Syntax

UCLASS&40;CollapseCategories, HideCategories&61;Object, BlueprintType, Config&61;Engine&41;  
class UGeometryCacheTrackStreamable : public UGeometryCacheTrack

Remarks

Derived GeometryCacheTrack class, used for Transform animation.

FGeometryCacheTrackStreamableRenderResource keeps a reference to the track. Be sure to keep the implementation of this class valid so it properly releases the render resoruce before making any changes to this object that may affect the render thread.

Variables

  Type Name Description
Public variable UProperty Category visibleanywhere TObjectPtr< UGeometryCacheCodecBase > Codec Codec for this track
Public variable FGeometryCachePreprocessor * Preprocessor  

Constructors

  Type Name Description
Public function  

UGeometryCacheTrackStreamable ( const FObjectInitializer& ObjectInitializer
)

  

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Public function void

AddMeshSample ( const FGeometryCacheMeshData& MeshData,
const float SampleTime,
bool bSameTopologyAsPrevious
)

 Add a GeometryCacheMeshData sample to the Track
Public function void

AddVisibilitySample ( const bool bVisible,
const float SampleTime
)

  
Public function void

BeginCoding ( UGeometryCacheCodecBase* SetCodec,
bool bForceSingleOptimization,
bool bCalculateAndStoreMotionVectors,
bool bOptimizeIndexBuffers
)

 Begin coding and set the codec to use for this track.
Public function bool Finish up coding. Return true if the track has samples
Public function void

FindSampleIndexesFromTime ( float Time,
bool bLooping,
bool bIsPlayingBackwards,
int32& OutFrameIndex,
int32& OutNextFrameIndex,
float& InterpolationFactor
)

 Find the two frames closest to the given time.
Public function Const const uint32

FindSampleIndexFromTime ( const float Time,
const bool bLooping
)

 FindSampleIndexFromTime uses binary search to find the closest index to Time inside Samples
Public function FStreamedGeometryCacheChunk &

GetChunk ( int32 ChunkID
)

  
Public function Const const FStreamedGeometryCacheChunk &

GetChunk ( int32 ChunkID
)

  
Public function void

GetChunksForTimeRange ( float StartTime,
float EndTime,
bool Looping,
TArray< int32 >& OutChunkIndexes
)

 Get the CunksIds that need to be loaded to display any frames falling within the given time range.
Public function FGeometryCacheTrackStreamableRenderResource *  
Public function Const const FGeometryCacheTrackStreamableSampleInfo &

GetSampleInfo ( int32 SampleID
)

 Get the info for the sample with the given ID.
Public function Const const FVisibilitySample &

GetVisibilitySample ( float Time,
const bool bLooping
)

  
Public function Static void Creates a totally invalid UGeometryCacheTrackStreamable instance specially set up to be very large and then tries to serialize it to smoke-test the serialization of large assets and bulk data.

Overridden from UGeometryCacheTrack

  Type Name Description
Public function Virtual Const uint64

GetHash ()

 Return the hash of the mesh data of the track
Public function Virtual Const const float GetMaxSampleTime, returns the time for the last sample Not the same as the animation length since it might not start at time 0
Public function Virtual bool

GetMeshDataAtTime ( float Time,
FGeometryCacheMeshData& OutMeshData
)

 Get the mesh data for the specified time
Public function Virtual const FGeometryCacheTrackSampleInfo &

GetSampleInfo ( float Time,
const bool bLooping
)

 Get the info for the sample displayed at the given time.
Public function Virtual void

SetDuration ( float NewDuration
)

 Set the duration property.
Public function Virtual const bool

UpdateBoundsData ( const float Time,
const bool bLooping,
const bool bIsPlayingBackward,
int32& InOutBoundsSampleIndex,
FBox& OutBounds
)

 UpdateBoundsData
Public function Virtual const bool

UpdateMeshData ( const float Time,
const bool bLooping,
int32& InOutMeshSampleIndex,
FGeometryCacheMeshData*& OutMeshData
)

 UpdateMeshData*

Overridden from UObject

  Type Name Description
Public function Virtual void Called before destroying the object.
Public function Virtual void Called to finish destroying the object.
Public function Virtual void

GetResourceSizeEx ( FResourceSizeEx& CumulativeResourceSize
)

 Get the size of the object/resource for use in memory tools or to display to artists/LDs in the Editor This is the extended version which separates up the used memory into different memory regions (the actual definition of which may be platform specific).
Public function Virtual bool Called to check if the object is ready for FinishDestroy.
Public function Virtual void Called after the C++ constructor and after the properties have been initialized, including those loaded from config.
Public function Virtual void Do any object-specific cleanup required immediately after loading an object.
Public function Virtual void Handles reading, writing, and reference collecting using FArchive.

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