RawMesh.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/Array.h"
#include "Containers/UnrealString.h"
#include "CoreMinimal.h"
#include "HAL/CriticalSection.h"
#include "Math/Color.h"
#include "Math/UnrealMathSSE.h"
#include "Math/Vector.h"
#include "Math/Vector2D.h"
#include "Misc/Guid.h"
#include "Serialization/BulkData.h"
#include "Serialization/StructuredArchiveAdapters.h"
#include "Templates/DontCopy.h"
 
class FArchive;
 
enum
{
    MAX_MESH_TEXTURE_COORDS = 8,
};
 
struct FRawMesh
{
    TArray<int32> FaceMaterialIndices;
    TArray<uint32> FaceSmoothingMasks;
 
    TArray<FVector3f> VertexPositions;
 
    TArray<uint32> WedgeIndices;
    TArray<FVector3f>   WedgeTangentX;
    TArray<FVector3f>   WedgeTangentY;
    TArray<FVector3f>   WedgeTangentZ;
    TArray<FVector2f> WedgeTexCoords[MAX_MESH_TEXTURE_COORDS];
    TArray<FColor> WedgeColors;
 
    TArray<int32> MaterialIndexToImportIndex;
 
    RAWMESH_API void Empty();
 
    RAWMESH_API bool IsValid() const;
 
    RAWMESH_API bool IsValidOrFixable() const;
 
    inline FVector3f GetWedgePosition(int32 WedgeIndex) const
    {
        return VertexPositions[WedgeIndices[WedgeIndex]];
    }
 
    RAWMESH_API void CompactMaterialIndices();
 
};
 
RAWMESH_API FArchive& operator<<(FArchive& Ar, FRawMesh& RawMesh);
 
 
class FRawMeshBulkData
{
#if WITH_EDITOR
    TDontCopy<FRWLock> BulkDataLock;
#endif
    FByteBulkData BulkData;
    FGuid Guid;
    bool bGuidIsHash;
 
public:
    RAWMESH_API FRawMeshBulkData();
 
    RAWMESH_API void Serialize(class FArchive& Ar, class UObject* Owner);
 
    RAWMESH_API void SaveRawMesh(struct FRawMesh& InMesh);
 
    RAWMESH_API void LoadRawMesh(struct FRawMesh& OutMesh);
 
    RAWMESH_API FString GetIdString() const;
 
    RAWMESH_API void UseHashAsGuid(class UObject* Owner);
    bool UsesHashAsGuid() const { return bGuidIsHash; }
 
    RAWMESH_API const FByteBulkData& GetBulkData() const;
 
    inline bool IsEmpty() const { return BulkData.GetBulkDataSize() == 0; }
 
    RAWMESH_API void Empty();
};