MaterialExpressionNoise.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "MaterialExpressionIO.h"
#include "Materials/MaterialExpression.h"
#include "Materials/MaterialExpressionExternalCodeBase.h"
#include "MaterialExpressionNoise.generated.h"
 
UENUM()
enum ENoiseFunction : int
{
    NOISEFUNCTION_SimplexTex UMETA(DisplayName="Simplex - Texture Based"),
 
    NOISEFUNCTION_GradientTex UMETA(DisplayName="Gradient - Texture Based"),
 
    NOISEFUNCTION_GradientTex3D UMETA(DisplayName = "Fast Gradient - 3D Texture"),
 
    NOISEFUNCTION_GradientALU UMETA(DisplayName = "Gradient - Computational"),
 
    NOISEFUNCTION_ValueALU UMETA(DisplayName="Value - Computational"),
 
    NOISEFUNCTION_VoronoiALU UMETA(DisplayName = "Voronoi"),
 
    NOISEFUNCTION_MAX,
};
 
UCLASS(MinimalAPI)
class UMaterialExpressionNoise : public UMaterialExpression
{
    GENERATED_UCLASS_BODY()
 
    
    UPROPERTY()
    FExpressionInput Position;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionNoise)
    EPositionOrigin WorldPositionOriginType = EPositionOrigin::Absolute;
 
    UPROPERTY()
    FExpressionInput FilterWidth;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionNoise)
    float Scale;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionNoise, meta=(UIMin = "1", UIMax = "4"))
    int32 Quality;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionNoise, meta=(DisplayName = "Function"))
    TEnumAsByte<enum ENoiseFunction> NoiseFunction;
    
    UPROPERTY(EditAnywhere, Category=MaterialExpressionNoise)
    uint32 bTurbulence:1;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionNoise, meta=(UIMin = "1", UIMax = "10"))
    int32 Levels;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionNoise)
    float OutputMin;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionNoise)
    float OutputMax;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionNoise, meta=(UIMin = "2", UIMax = "8"))
    float LevelScale;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionNoise)
    uint32 bTiling:1;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionNoise, meta=(UIMin = "4"))
    uint32 RepeatSize;
 
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR
    virtual void Build(MIR::FEmitter& Emitter) override;
    virtual bool CanEditChange(const FProperty* InProperty) const override;
    virtual FName GetInputName(int32 InputIndex) const override;
    virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override;
#endif
    //~ End UMaterialExpression Interface
};
 
UCLASS(MinimalAPI)
class UMaterialExpressionScalarBlueNoise : public UMaterialExpressionExternalCodeBase
{
    GENERATED_UCLASS_BODY()
 
    // Later, we could add a 2D Position input if needed to overide pixel position
 
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR
    virtual EMaterialValueType GetOutputValueType(int32 OutputIndex) override;
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override;
    virtual void GetExpressionToolTip(TArray<FString>& OutToolTip) override;
    virtual void GetConnectorToolTip(int32 InputIndex, int32 OutputIndex, TArray<FString>& OutToolTip) override;
#endif
    //~ End UMaterialExpression Interface
};