MovieScenePiecewiseCurve.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/Array.h"
#include "MovieSceneFwd.h"
#include "Channels/MovieSceneInterpolation.h"
#include "MovieSceneTransformTypes.h"
 
#define UE_API MOVIESCENE_API
 
struct FFrameTime;
enum ERichCurveExtrapolation : int;
 
namespace UE::MovieScene
{
 
namespace Interpolation
{
    struct FCachedInterpolation;
} // namespace Interpolation
 
 
struct FPiecewiseCurve
{
    MOVIESCENE_API FPiecewiseCurve Integral() const;
 
 
    MOVIESCENE_API FPiecewiseCurve Derivative() const;
 
 
    MOVIESCENE_API void Offset(double Amount);
 
 
    MOVIESCENE_API Interpolation::FCachedInterpolation GetInterpolationForTime(FFrameTime Time) const;
 
 
    MOVIESCENE_API bool Evaluate(FFrameTime Time, double& OutResult) const;
 
 
    MOVIESCENE_API TOptional<FFrameTime> InverseEvaluate(double Value, FFrameTime TimeHint, EInverseEvaluateFlags Flags) const;
 
 
    MOVIESCENE_API bool InverseEvaluateBetween(double Value, FFrameTime StartTime, FFrameTime EndTime, const TFunctionRef<bool(FFrameTime)>& Visitor) const;
 
public:
 
    TArray<Interpolation::FCachedInterpolation> Values;
};
 
 
struct FPiecewiseCurveData
{
    const FPiecewiseCurve* Channel;
 
    UE_API bool HasDefaultValue() const;
    UE_API double GetDefaultValue() const;
    UE_API double PreExtrapolate(const FFrameTime& Time) const;
    UE_API double PostExtrapolate(const FFrameTime& Time) const;
    UE_API int32 NumPieces() const;
    UE_API int32 GetIndexOfPieceByTime(const FFrameTime& Time) const;
    UE_API Interpolation::FCachedInterpolation GetPieceByIndex(int32 Index) const;
    UE_API Interpolation::FCachedInterpolation GetPieceByTime(const FFrameTime& Time) const;
    UE_API FFrameNumber GetFiniteStart() const;
    UE_API FFrameNumber GetFiniteEnd() const;
    UE_API ERichCurveExtrapolation GetPreExtrapolation() const;
    UE_API ERichCurveExtrapolation GetPostExtrapolation() const;
    UE_API double GetStartingValue() const;
    UE_API double GetEndingValue() const;
};
 
 
} // namespace UE::MovieScene
 
#undef UE_API