MaterialExpressionDynamicParameter.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "MaterialExpressionIO.h"
#include "Materials/MaterialExpression.h"
#include "MaterialExpressionDynamicParameter.generated.h"
 
struct FPropertyChangedEvent;
 
UCLASS(collapsecategories, hidecategories=Object, MinimalAPI)
class UMaterialExpressionDynamicParameter : public UMaterialExpression
{
    GENERATED_UCLASS_BODY()
 
    
    UPROPERTY(EditAnywhere, editfixedsize, Category=MaterialExpressionDynamicParameter)
    TArray<FString> ParamNames;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionDynamicParameter, Meta = (ShowAsInputPin = "Primary"))
    FLinearColor DefaultValue = FLinearColor::White;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionDynamicParameter, meta = (UIMin = 0, ClampMin = 0, UIMax = 3, ClampMax = 3, ShowAsInputPin = "Primary"))
    uint32 ParameterIndex = 0;
 
    //~ Begin UObject Interface
#if WITH_EDITOR
    virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
#endif // WITH_EDITOR
 
    virtual void PostLoad() override;
    //~ End UObject Interface
 
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR
    virtual void Build(MIR::FEmitter& Emitter) override;
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override;
    virtual TArray<FExpressionOutput>& GetOutputs() override;
    virtual bool MatchesSearchQuery(const TCHAR* SearchQuery) override;
    virtual int32 GetWidth() const override;
    virtual int32 GetLabelPadding() override { return 8; }
    virtual FText GetKeywords() const override { return FText::FromString(TEXT("dynamic")); }
 
#endif
    //~ End UMaterialExpression Interface
 
#if WITH_EDITORONLY_DATA
    ENGINE_API void UpdateDynamicParameterProperties();
#endif // WITH_EDITORONLY_DATA
 
    bool CopyDynamicParameterProperties(const UMaterialExpressionDynamicParameter* FromParam);
};