MovieScenePlayRateCurve.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Channels/MovieSceneTimeWarpChannel.h"
#include "Channels/MovieScenePiecewiseCurve.h"
#include "Variants/MovieSceneTimeWarpGetter.h"
#include "MovieScenePlayRateCurve.generated.h"
 
 
UCLASS(MinimalAPI, DisplayName="Play Rate Curve")
class UMovieScenePlayRateCurve : public UMovieSceneTimeWarpGetter
{
public:
 
    GENERATED_BODY()
 
    UMovieScenePlayRateCurve();
 
    /* Begin UMovieSceneTimeWarpGetter Implementation */
    FFrameTime RemapTime(FFrameTime In) const override;
    TOptional<FFrameTime> InverseRemapTimeCycled(FFrameTime InValue, FFrameTime InTimeHint, const UE::MovieScene::FInverseTransformTimeParams& Params) const override;
    TRange<FFrameTime> ComputeTraversedHull(const TRange<FFrameTime>& Range) const override;
    bool InverseRemapTimeWithinRange(FFrameTime InTime, FFrameTime RangeStart, FFrameTime RangeEnd, const TFunctionRef<bool(FFrameTime)>& VisitorCallback) const override;
    void InitializeDefaults() override;
    EMovieSceneChannelProxyType PopulateChannelProxy(FMovieSceneChannelProxyData& OutProxyData, EAllowTopLevelChannels AllowTopLevel) override;
    bool DeleteChannel(FMovieSceneTimeWarpVariant& OutVariant, FName ChannelName) override;
    void ScaleBy(double UnwarpedScaleFactor) override;
    UE::MovieScene::ETimeWarpChannelDomain GetDomain() const override;
    /* End UMovieSceneTimeWarpGetter Implementation */
 
#if WITH_EDITOR
    virtual bool Modify(bool bAlwaysMarkDirty = true) override;
#endif
 
    MOVIESCENE_API const UE::MovieScene::FPiecewiseCurve& GetTimeWarpCurve() const;
 
protected:
 
    void InvalidateTimeWarp();
 
public:
 
    UPROPERTY(EditAnywhere, Category="TimeWarp")
    FMovieSceneTimeWarpChannel PlayRate;
 
    UPROPERTY(EditAnywhere, Category="TimeWarp")
    FFrameNumber PlaybackStartFrame;
 
    UPROPERTY(EditAnywhere, Category="TimeWarp")
    bool bManualPlaybackStart = false;
 
private:
 
    mutable UE::MovieScene::FPiecewiseCurve IntegratedTimeWarp;
 
public:
 
    mutable bool bUpToDate = false;
};