MovieSceneColorSection.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Curves/KeyHandle.h"
#include "Curves/RichCurve.h"
#include "MovieSceneSection.h"
#include "MovieSceneKeyStruct.h"
#include "Channels/MovieSceneFloatChannel.h"
#include "EntitySystem/IMovieSceneEntityProvider.h"
#include "MovieSceneColorSection.generated.h"
 
struct FPropertyChangedEvent;
 
USTRUCT()
struct FMovieSceneColorKeyStruct
    : public FMovieSceneKeyStruct
{
    GENERATED_BODY()
 
    
    UPROPERTY(EditAnywhere, Category=Key, meta=(InlineColorPicker))
    FLinearColor Color = FLinearColor(0.f, 0.f, 0.f, 1.f);
 
    UPROPERTY(EditAnywhere, Category=Key)
    FFrameNumber Time;
 
    FMovieSceneKeyStructHelper KeyStructInterop;
 
    virtual void PropagateChanges(const FPropertyChangedEvent& ChangeEvent) override;
};
template<> struct TStructOpsTypeTraits<FMovieSceneColorKeyStruct> : public TStructOpsTypeTraitsBase2<FMovieSceneColorKeyStruct> { enum { WithCopy = false }; };
 
 
UCLASS(MinimalAPI)
class UMovieSceneColorSection 
    : public UMovieSceneSection
    , public IMovieSceneEntityProvider
{
    GENERATED_UCLASS_BODY()
 
public:
 
    FMovieSceneFloatChannel& GetRedChannel() { return RedCurve; }
    const FMovieSceneFloatChannel& GetRedChannel() const { return RedCurve; }
 
    FMovieSceneFloatChannel& GetGreenChannel() { return GreenCurve; }
    const FMovieSceneFloatChannel& GetGreenChannel() const { return GreenCurve; }
 
    FMovieSceneFloatChannel& GetBlueChannel() { return BlueCurve; }
    const FMovieSceneFloatChannel& GetBlueChannel() const { return BlueCurve; }
 
    FMovieSceneFloatChannel& GetAlphaChannel() { return AlphaCurve; }
    const FMovieSceneFloatChannel& GetAlphaChannel() const { return AlphaCurve; }
 
protected:
 
    //~ UMovieSceneSection interface
    virtual TSharedPtr<FStructOnScope> GetKeyStruct(TArrayView<const FKeyHandle> KeyHandles) override;
 
private:
 
    //~ IMovieSceneEntityProvider interface
    virtual void ImportEntityImpl(UMovieSceneEntitySystemLinker* EntityLinker, const FEntityImportParams& Params, FImportedEntity* OutImportedEntity) override;
    virtual bool PopulateEvaluationFieldImpl(const TRange<FFrameNumber>& EffectiveRange, const FMovieSceneEvaluationFieldEntityMetaData& InMetaData, FMovieSceneEntityComponentFieldBuilder* OutFieldBuilder) override;
 
private:
 
    UPROPERTY()
    FMovieSceneFloatChannel RedCurve;
 
    UPROPERTY()
    FMovieSceneFloatChannel GreenCurve;
 
    UPROPERTY()
    FMovieSceneFloatChannel BlueCurve;
 
    UPROPERTY()
    FMovieSceneFloatChannel AlphaCurve;
};