MaterialExpressionPanner.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 "MaterialExpressionPanner.generated.h"
 
UCLASS(collapsecategories, hidecategories=Object, MinimalAPI)
class UMaterialExpressionPanner : public UMaterialExpression
{
    GENERATED_UCLASS_BODY()
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to 'ConstCoordinate' if not specified"))
    FExpressionInput Coordinate;
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to Game Time if not specified"))
    FExpressionInput Time;
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Vector2 speed scale, if specified"))
    FExpressionInput Speed;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionPanner, meta = (OverridingInputProperty = "Speed"))
    float SpeedX;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionPanner, meta = (OverridingInputProperty = "Speed"))
    float SpeedY;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionPanner, meta = (OverridingInputProperty = "Coordinate"))
    uint32 ConstCoordinate = 0;
 
    // Output only the fractional part of the pan calculation for greater precision.
    // Output is greater than or equal to 0 and less than 1.
    UPROPERTY(EditAnywhere, Category=MaterialExpressionPanner)
    bool bFractionalPart;
 
    //~ 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 bool NeedsRealtimePreview() override { return Time.Expression==NULL && (SpeedX != 0.f || SpeedY != 0.f); }
#endif
    //~ End UMaterialExpression Interface
 
};