MaterialExpressionDepthFade.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 "MaterialExpressionDepthFade.generated.h"
 
UCLASS(collapsecategories, hidecategories=Object)
class UMaterialExpressionDepthFade : public UMaterialExpression
{
    GENERATED_UCLASS_BODY()
 
    
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to 'OpacityDefault' if not specified"))
    FExpressionInput InOpacity;
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to 'FadeDistanceDefault' if not specified"))
    FExpressionInput FadeDistance;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionDepthFade, meta=(OverridingInputProperty = "InOpacity"))
    float OpacityDefault = 1.0f;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionDepthFade, meta=(OverridingInputProperty = "FadeDistance"))
    float FadeDistanceDefault = 100.0f;
 
#if WITH_EDITOR
 
    //~ Begin UMaterialExpression Interface
    virtual FName GetInputName(int32 InputIndex) const override
    {
        if (InputIndex == 0)
        {
            return TEXT("Opacity");
        }
        else
        {
            return Super::GetInputName(InputIndex);
        }
    }
    virtual void Build(MIR::FEmitter& Emitter) override;
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override
    {
        OutCaptions.Add(TEXT("Depth Fade"));
    }
 
#endif
    //~ End UMaterialExpression Interface#endif
};