MaterialExpressionStaticBoolParameter.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "MaterialValueType.h"
#include "Materials/MaterialExpressionParameter.h"
#include "MaterialExpressionStaticBoolParameter.generated.h"
 
UCLASS(collapsecategories, hidecategories=Object, MinimalAPI)
class UMaterialExpressionStaticBoolParameter : public UMaterialExpressionParameter
{
    GENERATED_UCLASS_BODY()
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionStaticBoolParameter, meta = (ShowAsInputPin = "Primary"))
    uint32 DefaultValue:1;
 
    UPROPERTY()
    uint32 DynamicBranch:1;
 
public:
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR
    virtual void Build(MIR::FEmitter& Emitter) override;
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual int32 CompilePreview(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override;
    virtual EMaterialValueType GetOutputValueType(int32 OutputIndex) override {return DynamicBranch ? MCT_Bool : MCT_StaticBool;}
    virtual bool IsStaticExpression() const override { return DynamicBranch == 0; }
    virtual bool GetParameterValue(FMaterialParameterMetadata& OutMeta) const override
    {
        OutMeta.Value = (bool)DefaultValue;
        OutMeta.bDynamicSwitchParameter = DynamicBranch;
        return Super::GetParameterValue(OutMeta);
    }
    virtual bool SetParameterValue(const FName& Name, const FMaterialParameterMetadata& Meta, EMaterialExpressionSetParameterValueFlags Flags) override
    {
        if (Meta.Value.Type == EMaterialParameterType::StaticSwitch)
        {
            if (SetParameterValue(Name, Meta.Value.AsStaticSwitch(), Meta.ExpressionGuid, Flags))
            {
                if (EnumHasAnyFlags(Flags, EMaterialExpressionSetParameterValueFlags::AssignGroupAndSortPriority))
                {
                    Group = Meta.Group;
                    SortPriority = Meta.SortPriority;
                }
                return true;
            }
        }
        return false;
    }
#endif
    //~ End UMaterialExpression Interface
 
#if WITH_EDITOR
    bool SetParameterValue(FName InParameterName, bool OutValue, FGuid InExpressionGuid, EMaterialExpressionSetParameterValueFlags Flags = EMaterialExpressionSetParameterValueFlags::None);
#endif
};