CollectionPositionTargetFacade.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "GeometryCollection/ManagedArrayAccessor.h"
#include "GeometryCollection/ManagedArrayCollection.h"
#include "GeometryCollection/GeometryCollection.h"
#include "GeometryCollection/Facades/CollectionSelectionFacade.h"
 
namespace GeometryCollection::Facades
{
    struct FPositionTargetsData
    {
        TArray<int32> TargetIndex;
        TArray<int32> SourceIndex;
        TArray<float> TargetWeights;
        TArray<float> SourceWeights;
        UE_DEPRECATED(5.6, "TargetName will be removed and is no longer populated.")
        FString TargetName;
        UE_DEPRECATED(5.6, "SourceName will be removed and is no longer populated.")
        FString SourceName;
        float Stiffness = 0.f;
        float Damping = 0.f;
        bool bIsAnisotropic = false;
        bool bIsZeroRestLength = false;
        PRAGMA_DISABLE_DEPRECATION_WARNINGS
        FPositionTargetsData() = default;
        FPositionTargetsData(const FPositionTargetsData&) = default;
        FPositionTargetsData(FPositionTargetsData&&) = default;
        FPositionTargetsData& operator=(const FPositionTargetsData&) = default;
        FPositionTargetsData& operator=(FPositionTargetsData&&) = default;
        PRAGMA_ENABLE_DEPRECATION_WARNINGS
    };
 
    class FPositionTargetFacade
    {
    public:
 
        typedef GeometryCollection::Facades::FSelectionFacade::FSelectionKey FBindingKey;
 
        //
        // Kinematics
        //
        static CHAOS_API const FName GroupName;
        static CHAOS_API const FName TargetIndex;
        static CHAOS_API const FName SourceIndex;
        static CHAOS_API const FName Stiffness;
        static CHAOS_API const FName Damping;
        UE_DEPRECATED(5.6, "SourceName will be removed.")
        static CHAOS_API const FName SourceName;
        UE_DEPRECATED(5.6, "TargetName will be removed.")
        static CHAOS_API const FName TargetName;
        static CHAOS_API const FName TargetWeights;
        static CHAOS_API const FName SourceWeights;
        static CHAOS_API const FName IsAnisotropic;
        static CHAOS_API const FName IsZeroRestLength;
        
        CHAOS_API FPositionTargetFacade(FManagedArrayCollection& InCollection, const FName& InVerticesGroup = FGeometryCollection::VerticesGroup);
        CHAOS_API FPositionTargetFacade(const FManagedArrayCollection& InCollection, const FName& InVerticesGroup = FGeometryCollection::VerticesGroup);
 
        PRAGMA_DISABLE_DEPRECATION_WARNINGS
        FPositionTargetFacade(FPositionTargetFacade&&) = default;
        PRAGMA_ENABLE_DEPRECATION_WARNINGS
 
        CHAOS_API void DefineSchema();
 
        bool IsConst() const { return Collection == nullptr; }
 
        CHAOS_API bool IsValid() const;
 
        //
        //  Skeletal Mesh Bone Bindings
        //
        CHAOS_API int32 AddPositionTarget(const FPositionTargetsData& InputData);
        CHAOS_API FPositionTargetsData GetPositionTarget(const int32 DataIndex) const;
        int32 NumPositionTargets() const { return TargetIndexAttribute.Num(); }
        
        CHAOS_API int32 RemoveInvalidPositionTarget();
        CHAOS_API int32 RemovePositionTargetBetween(TFunctionRef<bool(const int32 VertexIdx)> IsVertexGroup1, TFunctionRef<bool(const int32 VertexIdx)> IsVertexGroup2);
 
    protected:
        const FManagedArrayCollection& ConstCollection;
        FManagedArrayCollection* Collection = nullptr;
        const FName VerticesGroup;
 
        TManagedArrayAccessor<TArray<int32>> TargetIndexAttribute;
        TManagedArrayAccessor<TArray<int32>> SourceIndexAttribute;
        TManagedArrayAccessor<float> StiffnessAttribute;
        TManagedArrayAccessor<float> DampingAttribute;
        TManagedArrayAccessor<TArray<float>> TargetWeightsAttribute;
        TManagedArrayAccessor<TArray<float>> SourceWeightsAttribute;
        TManagedArrayAccessor<bool> IsAnisotropicAttribute;
        TManagedArrayAccessor<bool> IsZeroRestLengthAttribute;
    };
}