MaterialExpressionDistanceFieldApproxAO.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 "MaterialExpressionDistanceFieldApproxAO.generated.h"
 
UCLASS()
class UMaterialExpressionDistanceFieldApproxAO : public UMaterialExpression
{
    GENERATED_BODY()
 
public:
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to current world position if not specified"))
    FExpressionInput Position;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionDistanceFieldApproxAO)
    EPositionOrigin WorldPositionOriginType = EPositionOrigin::Absolute;
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to current world normal if not specified"))
    FExpressionInput Normal;
 
    UPROPERTY(meta = (RequiredInput = "false"))
    FExpressionInput BaseDistance;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionDistanceFieldApproxAO, meta=(OverridingInputProperty = "BaseDistance"))
    float BaseDistanceDefault = 15;
 
    UPROPERTY(meta = (RequiredInput = "false"))
    FExpressionInput Radius;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionDistanceFieldApproxAO, meta=(OverridingInputProperty = "Radius"))
    float RadiusDefault = 150;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionDistanceFieldApproxAO, meta = (UIMin = "1", UIMax = "4", ShowAsInputPin = "Primary", ToolTip = "Number of samples used to calculate occlusion"))
    uint32 NumSteps = 1;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionDistanceFieldApproxAO, DisplayName = "Step Scale", meta = (UIMin = "1.0", UIMax = "8.0", ShowAsInputPin = "Advanced", ToolTip = "Used to control step distance distribution"))
    float StepScaleDefault = 3.0f;
 
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR
    virtual void Build(MIR::FEmitter& Emitter) 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
};