ClothingSystemRuntimeTypes.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "Containers/Array.h"
#include "Math/Transform.h"
#include "Math/UnrealMathSSE.h"
#include "Math/Vector.h"
#include "ClothingSystemRuntimeTypes.generated.h"
 
 
// Data produced by a clothing simulation
struct FClothSimulData
{
    void Reset()
    {
        Positions.Reset();
        Normals.Reset();
        LODIndex = INDEX_NONE;
    }
 
    bool IsReset() const
    {
        return Positions.IsEmpty() && Normals.IsEmpty() && LODIndex == INDEX_NONE;
    }
 
    // Positions of the simulation mesh particles (aligned for SIMD loads)
    TArray<FVector3f, TAlignedHeapAllocator<16>> Positions;
 
    // Normals at the simulation mesh particles (aligned for SIMD loads)
    TArray<FVector3f, TAlignedHeapAllocator<16>> Normals;
 
    // Transform applied per position/normal element when loaded
    FTransform Transform;
 
    // Transform relative to the component to update clothing root transform when not ticking clothing but rendering a component
    FTransform ComponentRelativeTransform;
 
    // Current LOD index the data is valid for
    int32 LODIndex;
};
 
UENUM()
enum class EClothingTeleportMode : uint8
{
    // No teleport, simulate as normal
    None = 0,
    // Teleport the simulation, causing no intertial effects but keep the sim mesh shape
    Teleport,
    // Teleport the simulation, causing no intertial effects and reset the sim mesh shape
    TeleportAndReset,
    // Hard reset the simulation by refreshing the cloth config
    HardReset
};
 
struct IClothSimulationDataProvider
{
    virtual void GetUpdateClothSimulationData_AnyThread(TMap<int32, FClothSimulData>& OutClothSimulData, FMatrix& OutLocalToWorld, float& OutClothBlendWeight) const = 0;
};