MaterialBillboardComponent.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Components/PrimitiveComponent.h"
#include "MaterialBillboardComponent.generated.h"
 
class FPrimitiveSceneProxy;
class UCurveFloat;
class UMaterialInterface;
 
USTRUCT(BlueprintType)
struct FMaterialSpriteElement
{
    GENERATED_USTRUCT_BODY()
 
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=MaterialSpriteElement)
    TObjectPtr<class UMaterialInterface> Material;
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=MaterialSpriteElement)
    TObjectPtr<UCurveFloat> DistanceToOpacityCurve;
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=MaterialSpriteElement)
    uint32 bSizeIsInScreenSpace:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=MaterialSpriteElement)
    float BaseSizeX;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=MaterialSpriteElement)
    float BaseSizeY;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=MaterialSpriteElement)
    TObjectPtr<UCurveFloat> DistanceToSizeCurve;
 
    FMaterialSpriteElement()
        : Material(NULL)
        , DistanceToOpacityCurve(NULL)
        , bSizeIsInScreenSpace(false)
        , BaseSizeX(32)
        , BaseSizeY(32)
        , DistanceToSizeCurve(NULL)
    {
    }
 
    friend FArchive& operator<<(FArchive& Ar,FMaterialSpriteElement& LODElement);
};
 
UCLASS(ClassGroup=Rendering, collapsecategories, hidecategories=(Object,Activation,"Components|Activation",Physics,Collision,Lighting,Mesh,PhysicsVolume), editinlinenew, meta=(BlueprintSpawnableComponent), MinimalAPI)
class UMaterialBillboardComponent : public UPrimitiveComponent
{
    GENERATED_UCLASS_BODY()
 
    
    UPROPERTY(EditAnywhere, BlueprintReadOnly, Category=Sprite)
    TArray<FMaterialSpriteElement> Elements;
 
    UFUNCTION(BlueprintCallable, Category="Rendering|Components|MaterialSprite")
    ENGINE_API void SetElements(const TArray<FMaterialSpriteElement>& NewElements);
 
    UFUNCTION(BlueprintCallable, Category="Rendering|Components|MaterialSprite")
    ENGINE_API void AddElement(
        class UMaterialInterface* Material,
        class UCurveFloat* DistanceToOpacityCurve,
        bool bSizeIsInScreenSpace,
        float BaseSizeX,
        float BaseSizeY,
        class UCurveFloat* DistanceToSizeCurve
        );
 
    //~ Begin UObject Interface.
    ENGINE_API virtual void PostLoad() override;
    //~ End UObject Interface.
    // 
    //~ Begin UPrimitiveComponent Interface
    ENGINE_API virtual FPrimitiveSceneProxy* CreateSceneProxy() override;
    ENGINE_API virtual FBoxSphereBounds CalcBounds(const FTransform& LocalToWorld) const override;
    ENGINE_API virtual UMaterialInterface* GetMaterial(int32 Index) const override;
    ENGINE_API virtual void SetMaterial(int32 ElementIndex, class UMaterialInterface* Material) override;
    ENGINE_API virtual void GetUsedMaterials(TArray<UMaterialInterface*>& OutMaterials, bool bGetDebugMaterials = false) const override;
    //~ End UPrimitiveComponent Interface
 
    ENGINE_API virtual void CollectPSOPrecacheData(const FPSOPrecacheParams& BasePrecachePSOParams, FMaterialInterfacePSOPrecacheParamsList& OutParams) override;
 
    //~ Begin USceneComponent Interface
#if WITH_EDITOR
    ENGINE_API virtual bool GetMaterialPropertyPath(int32 ElementIndex, UObject*& OutOwner, FString& OutPropertyPath, FProperty*& OutProperty) override;
#endif // WITH_EDITOR
    //~ End USceneComponent Interface
};