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> Unreal Engine API Reference > Runtime > Core > Math > FInterpCurve

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FInterpCurve

Template for interpolation curves.

Inheritance Hierarchy

FInterpCurve

	FInterpCurveFloat
	FInterpCurveLinearColor
	FInterpCurveQuat
	FInterpCurveTwoVectors
	FInterpCurveVector
	FInterpCurveVector2D

References

Module	Core
Header	/Engine/Source/Runtime/Core/Public/Math/InterpCurve.h
Include	#include "Math/InterpCurve.h"

Syntax

template<class T>
class FInterpCurve

Remarks

Template for interpolation curves.

Variables

	Name	Description
bool	bIsLooped	Specify whether the curve is looped or not
float	LoopKeyOffset	Specify the offset from the last point's input key corresponding to the loop point
TArray< FInterp...	Points	Holds the collection of interpolation points.

Constructors

	Name	Description
	FInterpCurve()	Default constructor.

Functions

	Name	Description
int32	AddPoint ( const float InVal, const T& OutVal )	Adds a new keypoint to the InterpCurve with the supplied In and Out value.
void	AutoSetTangents ( float Tension, bool bStationaryEndpoints )	Automatically set the tangents on the curve based on surrounding points
void	CalcBounds ( T& OutMin, T& OutMax, const T& Default )	Calculate the min/max out value that can be returned by this InterpCurve.
void	ClearLoopKey()	Clear loop key for curve
T	Eval ( const float InVal, const T& Default )	Evaluate the output for an arbitary input value.
T	EvalDerivative ( const float InVal, const T& Default )	Evaluate the derivative at a point on the curve.
T	EvalSecondDerivative ( const float InVal, const T& Default )	Evaluate the second derivative at a point on the curve.
int32	GetPointIndexForInputValue ( const float InValue )	Finds the lower index of the two points whose input values bound the supplied input value.
float	InaccurateFindNearest ( const T& PointInSpace, float& OutDistanceSq )	Find the nearest point on spline to the given point.
float	InaccurateFindNearest ( const T& PointInSpace, float& OutDistanceSq, float& OutSegment )	Find the nearest point on spline to the given point.
float	InaccurateFindNearestOnSegment ( const T& PointInSpace, int32 PtIdx, float& OutSquaredDistance )	Find the nearest point (to the given point) on segment between Points[PtIdx] and Points[PtIdx+1]
int32	MovePoint ( int32 PointIndex, float NewInVal )	Moves a keypoint to a new In value.
void	Reset()	Clears all keypoints from InterpCurve.
void	SetLoopKey ( float InLoopKey )	Set loop key for curve