BVHParticles.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "Chaos/Particles.h"
#include "ChaosArchive.h"
#include "Chaos/ParticleHandleFwd.h"
 
 
namespace Chaos
{
    extern int32 CHAOS_API CollisionParticlesBVHDepth;
 
    template<class OBJECT_ARRAY, class LEAF_TYPE, class T, int d>
    class TBoundingVolumeHierarchy;
 
 
    template<class OBJECT_ARRAY, class LEAF_TYPE, class T, int d>
    class TBoundingVolumeHierarchy;
 
    template<class T, int d>
    class TAABB;
 
    class FBVHParticles final /*Note: removing this final has implications for serialization. See TImplicitObject*/ : public FParticles
    {
    public:
        using TArrayCollection::Size;
        using FParticles::X;
        using FParticles::AddParticles;
 
        CHAOS_API FBVHParticles();
        FBVHParticles(FBVHParticles&& Other);
        FBVHParticles(FParticles&& Other);
        CHAOS_API ~FBVHParticles();
 
        CHAOS_API FBVHParticles& operator=(const FBVHParticles& Other);
        CHAOS_API FBVHParticles& operator=(FBVHParticles&& Other);
 
        FBVHParticles* NewCopy() const
        {
            return new FBVHParticles(*this);
        }
 
        CHAOS_API void UpdateAccelerationStructures();
        const TArray<int32> FindAllIntersections(const FAABB3& Object) const;
 
        static FBVHParticles* SerializationFactory(FChaosArchive& Ar, FBVHParticles* BVHParticles)
        {
            return Ar.IsLoading() ? new FBVHParticles() : nullptr;
        }
 
        CHAOS_API void Serialize(FChaosArchive& Ar);
 
        void Serialize(FArchive& Ar)
        {
            check(false); //Aggregate simplicial require FChaosArchive - check false by default
        }
 
    private:
        CHAOS_API FBVHParticles(const FBVHParticles& Other);
 
        TBoundingVolumeHierarchy<FParticles, TArray<int32>, FReal, 3>* MBVH;
    };
 
    FORCEINLINE FChaosArchive& operator<<(FChaosArchive& Ar, FBVHParticles& Value)
    {
        Value.Serialize(Ar);
        return Ar;
    }
 
    FORCEINLINE FArchive& operator<<(FArchive& Ar, FBVHParticles& Value)
    {
        Value.Serialize(Ar);
        return Ar;
    }
 
 
    template<class T, int d>
    using TBVHParticles = FBVHParticles;
 
    typedef TBVHParticles<FReal, 3> FBVHParticlesFloat3;
}