CollectionConnectionGraphFacade.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "GeometryCollection/ManagedArrayCollection.h"
#include "GeometryCollection/ManagedArrayAccessor.h"
 
namespace GeometryCollection::Facades
{
 
    class FCollectionConnectionGraphFacade
    {
    public:
        CHAOS_API FCollectionConnectionGraphFacade(FManagedArrayCollection& InCollection);
        CHAOS_API FCollectionConnectionGraphFacade(const FManagedArrayCollection& InCollection);
 
        CHAOS_API bool IsValid() const;
 
        bool IsConst() const
        {
            return ConnectionEdgeStartAttribute.IsConst();
        }
 
        CHAOS_API void DefineSchema();
 
        CHAOS_API void ClearAttributes();
 
        CHAOS_API void ConnectWithContact(int32 BoneA, int32 BoneB, float ContactArea);
 
        CHAOS_API void Connect(int32 BoneA, int32 BoneB);
 
        CHAOS_API void EnableContactAreas(bool bEnable, float DefaultContactArea = 1.0f);
 
        CHAOS_API void ReserveAdditionalConnections(int32 NumAdditionalConnections);
 
        UE_DEPRECATED(5.3, "We have switched to an edge array connection representation. Please use the accessor functions (GetConnection, NumConnections, etc) to access the arrays of edge data.")
        TManagedArrayAccessor<TSet<int32>> ConnectionsAttribute;
 
        // Get the transform indices for the ConnectionIndex
        CHAOS_API TPair<int32, int32> GetConnection(int32 ConnectionIndex) const;
        // Get the contact area for the ConnectionIndex
        CHAOS_API float GetConnectionContactArea(int32 ConnectionIndex) const;
 
        CHAOS_API bool HasContactAreas() const;
 
        // Number of connection edges
        CHAOS_API int32 NumConnections() const;
 
        // Verifies the connections indices are valid indices into the Collection's Transform group
        CHAOS_API bool HasValidConnections() const;
 
        // Remove all edge connections, but keep the connection attributes
        CHAOS_API void ResetConnections();
 
    protected:
         TManagedArrayAccessor<int32> ConnectionEdgeStartAttribute;
         TManagedArrayAccessor<int32> ConnectionEdgeEndAttribute;
         TManagedArrayAccessor<float> ConnectionEdgeContactAttribute;
 
#if UE_BUILD_DEBUG
        TManagedArrayAccessor<int32> ParentAttribute;
#endif 
    };
 
}