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b83b0dc15c
ADDED Support for importing GeometryCache assets from Alembic files ADDED CalculateRawMeshTangets function that only calculates the tangents without building the RawMesh [CL 2591762 by Jurre DeBaare in Main branch]
84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "GeometryCacheTrack.generated.h"
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struct FGeometryCacheMeshData;
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/** Base class for GeometryCache tracks, stores matrix animation data and implements functionality for it */
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UCLASS(collapsecategories, hidecategories = Object, MinimalAPI, BlueprintType, config = Engine)
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class UGeometryCacheTrack : public UObject
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{
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GENERATED_UCLASS_BODY()
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virtual ~UGeometryCacheTrack();
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// Begin UObject interface.
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virtual void Serialize(FArchive& Ar) override;
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virtual SIZE_T GetResourceSize(EResourceSizeMode::Type Mode) override;
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// End UObject interface
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/**
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* UpdateMatrixData
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*
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* @param Time - (Elapsed)Time to check against
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* @param bLooping - Whether or not the animation should be played on a loop
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* @param InOutMatrixSampleIndex - Hold the MatrixSampleIndex and will be updated if changed according to the Elapsed Time
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* @param OutWorldMatrix - Will hold the new WorldMatrix if the SampleIndex changed
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* @return const bool
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*/
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virtual const bool UpdateMatrixData(const float Time, const bool bLooping, int32& InOutMatrixSampleIndex, FMatrix& OutWorldMatrix);
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/**
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* UpdateMeshData
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*
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* * @param Time - (Elapsed)Time to check against
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* @param bLooping - Whether or not the animation should be played on a loop
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* @param InOutMeshSampleIndex - Hold the MeshSampleIndex and will be updated if changed according to the Elapsed Time
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* @param OutVertices - Will hold the new VertexData if the SampleIndex changed
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* @return const bool
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*/
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virtual const bool UpdateMeshData(const float Time, const bool bLooping, int32& InOutMeshSampleIndex, FGeometryCacheMeshData*& OutMeshData );
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/**
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* SetMatrixSamples, Set the Matrix animation Samples
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*
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* @param Matrices - Array of Matrices
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* @param SampleTimes - Array of SampleTimes
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* @return void
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*/
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virtual void SetMatrixSamples(const TArray<FMatrix>& Matrices, const TArray<float>& SampleTimes);
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/**
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* GetMaxSampleTime, returns the time for the last sample can be considered as the total animation leght
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*
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* @return const float
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*/
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virtual const float GetMaxSampleTime() const;
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/**
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* GetNumMaterials, total number of materials inside this track (depends on batches)
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*
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* @return const uint32
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*/
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const uint32 GetNumMaterials() const { return NumMaterials; }
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protected:
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/**
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* FindSampleIndexFromTime uses binary search to find the closest index to Time inside Samples
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*
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* @param SampleTimes - Array of Sample times used for the search
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* @param Time - Time for which the closest index has to be found
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* @param bLooping - Whether or not we should fmod Time according to the last entry in SampleTimes
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* @return const uint32
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*/
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const uint32 FindSampleIndexFromTime(const TArray<float>& SampleTimes, const float Time, const bool bLooping);
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/** Matrix sample data, both FMatrix and time*/
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TArray<FMatrix> MatrixSamples;
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TArray<float> MatrixSampleTimes;
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/** Number of materials for this track*/
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uint32 NumMaterials;
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};
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