DeferredDecalProxy.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Math/BoxSphereBounds.h"
 
class FSceneView;
class UDecalComponent;
class UMaterialInterface;
class USceneComponent;
 
 
class FDeferredDecalProxy
{
public:
    ENGINE_API FDeferredDecalProxy(const UDecalComponent* InComponent);
    ENGINE_API FDeferredDecalProxy(const USceneComponent* InComponent, UMaterialInterface* InMaterial);
    ENGINE_API FDeferredDecalProxy(const struct FDeferredDecalSceneProxyDesc& Desc);
 
    ENGINE_API void SetTransformIncludingDecalSize(const FTransform& InComponentToWorldIncludingDecalSize, const FBoxSphereBounds& InBounds);
 
    ENGINE_API void InitializeFadingParameters(float AbsSpawnTime, float FadeDuration, float FadeStartDelay, float FadeInDuration, float FadeInStartDelay);
 
    ENGINE_API bool IsShown( const FSceneView* View ) const;
 
    inline const FBoxSphereBounds& GetBounds() const { return Bounds; }
 
    const USceneComponent* Component;
 
    UMaterialInterface* DecalMaterial;
 
    FTransform ComponentTrans;
 
private:
    bool DrawInGame;
 
    bool DrawInEditor;
 
    FBoxSphereBounds Bounds;
 
public:
 
    int32 SortOrder;
 
    float InvFadeDuration;
 
    float InvFadeInDuration;
 
    float FadeStartDelayNormalized;
 
    float FadeInStartDelayNormalized;
 
    float FadeScreenSize;
 
    FLinearColor DecalColor = FLinearColor::White;
};
 
 
struct FDeferredDecalUpdateParams
{
    enum class EOperationType : int8
    {
        AddToSceneAndUpdate,                // Adds the decal to the scene an updates the parameters
        Update,                             // Updates the decals parameters
        RemoveFromSceneAndDelete,           // Remove the decal from the scene and deletes the proxy
    };
 
    FTransform              Transform;
    FDeferredDecalProxy*    DecalProxy = nullptr;
    FBoxSphereBounds        Bounds;
    float                   AbsSpawnTime = 0.0f;
    float                   FadeDuration = 0.0f;
    float                   FadeStartDelay = 1.0f;
    float                   FadeInDuration = 0.0f;
    float                   FadeInStartDelay = 0.0f;
    float                   FadeScreenSize = 0.01f;
    int32                   SortOrder = 0;
    FLinearColor            DecalColor = FLinearColor::White;
    EOperationType          OperationType = EOperationType::Update;
};