IMovieSceneRetimingInterface.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "Misc/FrameRate.h"
 
#define UE_API MOVIESCENE_API
 
struct FFrameNumber;
struct FFrameTime;
class UMovieScene;
 
namespace UE::MovieScene
{
 
struct IRetimingInterface
{
    virtual ~IRetimingInterface() {}
 
    MOVIESCENE_API FFrameNumber RemapTime(FFrameNumber InTime) const;
 
    virtual double GetScale() const = 0;
    virtual FFrameTime RemapTime(FFrameTime InTime) const = 0;
 
    virtual TUniquePtr<IRetimingInterface> RecurseInto(UMovieScene* InMovieScene) const = 0;
 
    virtual void Begin(UMovieScene* InMovieScene) const = 0;
    virtual void End(UMovieScene* InMovieScene) const = 0;
};
 
 
struct FFrameRateRetiming : IRetimingInterface
{
    FFrameRate SourceRate;
    FFrameRate DestinationRate;
 
    UE_API FFrameRateRetiming(FFrameRate InSourceRate, FFrameRate InDestinationRate);
 
    UE_API virtual double GetScale() const override;
    UE_API virtual FFrameTime RemapTime(FFrameTime InTime) const override;
 
    UE_API virtual TUniquePtr<IRetimingInterface> RecurseInto(UMovieScene* InMovieScene) const override;
 
    UE_API virtual void Begin(UMovieScene* InMovieScene) const override;
    UE_API virtual void End(UMovieScene* InMovieScene) const override;
};
 
 
} // namespace UE::MovieScene
 
#undef UE_API