CollectionTetrahedralSkeletalBindingsFacade.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
#include "Containers/UnrealString.h"
#include "Containers/Array.h"
#include "GeometryCollection/ManagedArrayCollection.h"
#include "GeometryCollection/ManagedArrayAccessor.h"
 
namespace GeometryCollection::Facades
{
 
    class FTetrahedralSkeletalBindings
    {
    public:
        // Groups 
        static CHAOS_API const FName MeshBindingsGroupName;
        static CHAOS_API const FName MeshBindingsIdGroupName;
 
        // Attributes
        static CHAOS_API const FName MeshIdAttributeName;
        static CHAOS_API const FName MeshIndexAttributeName;
        static CHAOS_API const FName TetrahedronIndexAttributeName;
        static CHAOS_API const FName WeightsAttributeName;
        static CHAOS_API const FName SkeletalIndexAttributeName;
 
        CHAOS_API FTetrahedralSkeletalBindings(FManagedArrayCollection& InSelf);
        CHAOS_API FTetrahedralSkeletalBindings(const FManagedArrayCollection& InSelf);
        CHAOS_API virtual ~FTetrahedralSkeletalBindings();
 
        CHAOS_API void DefineSchema();
 
        bool IsConst() const { return MeshIdAttribute.IsConst(); }
 
        CHAOS_API bool IsValid() const;
 
        //
        // API
        //
        static CHAOS_API FString GenerateMeshGroupName(const int32 TetMeshIdx, const FName& SkeletalMeshName, const int32 LOD = INDEX_NONE);
        CHAOS_API void SetBindings(const FString& InMeshGroupIndex, const TArray<int32>& InTetrahedronIndex, const TArray<FVector4f>& WeightsIn, const TArray<int32>& InSkeletalIndex);
        
        CHAOS_API bool CalculateBindings(const FString& InKey, const TArray<FVector3f>& InVertices, TArray<FVector>& OutPosition, TArray<bool>* OutInfluence = nullptr) const;
        
    private:
        TManagedArrayAccessor<FString> MeshIdAttribute;
 
        TManagedArrayAccessor<int32> MeshGroupIndexAttribute;
        TManagedArrayAccessor<int32> TetrahedronIndexAttribute;
        TManagedArrayAccessor<FVector4f> WeightsAttribute;
        TManagedArrayAccessor<int32> SkeletalIndexAttribute;
 
        TManagedArrayAccessor<FIntVector4> TetrahedronAttribute;
        TManagedArrayAccessor<FVector3f> VerticesAttribute;
 
    };
 
}