FTangentSpline

[FTangentSpline](API\Runtime\Engine\FTangentSpline) Definition

API > API/Runtime > API/Runtime/Engine

FTangentSpline Definition

A spline that provides tangent-based control over curve shape while using piecewise Bezier curves internally for evaluation. Supports both manual tangent control and automatic tangent computation.

   
Name FTangentSpline
Type class
Header File /Engine/Source/Runtime/Engine/Classes/Curves/Splines/TangentSpline.h
Include Path #include "Curves/Splines/TangentSpline.h"

Syntax

class FTangentSpline : public UE::Geometry::Spline::TMultiSpline< UE::Geometry::Spline::FTangentBezierSpline3d >

Inheritance Hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers
  Curves/Splines/TangentSpline.h  

FTangentSpline ( const FSplineCurves& Other
)

   Curves/Splines/TangentSpline.h  

FTangentSpline ( const FTangentSpline& Other
)

   Curves/Splines/TangentSpline.h  
  Curves/Splines/TangentSpline.h  

Destructors

Name Remarks Include Path Unreal Specifiers

virtual ~FTangentSpline()

   Curves/Splines/TangentSpline.h  

Structs

Name Remarks
FChangeStamp Inspired by FDynamicMesh3::FChangeStamp.
FUpdateSplineParams  

Typedefs

Name Type Remarks Include Path
FTangentBezierControlPoint UE::Geometry::Spline::TTangentBezierControlPoint< FVector3d >   Curves/Splines/TangentSpline.h

Constants

Name Type Remarks Include Path
RotationAttrName const FName   Curves/Splines/TangentSpline.h
ScaleAttrName const FName   Curves/Splines/TangentSpline.h

Variables

Protected

Name Type Remarks Include Path Unreal Specifiers
CachedUpdateSplineParams FUpdateSplineParams   Curves/Splines/TangentSpline.h  
LegacyCurvesNextVersion FChangeStamp   Curves/Splines/TangentSpline.h  
LegacyCurvesVersion uint32   Curves/Splines/TangentSpline.h  
PositionCurve FInterpCurveVector Legacy Curves: Curves/Splines/TangentSpline.h  
ReparamStepsPerSegment int32   Curves/Splines/TangentSpline.h  
ReparamTable FInterpCurveFloat   Curves/Splines/TangentSpline.h  
ReparamTableNextVersion FChangeStamp   Curves/Splines/TangentSpline.h  
ReparamTableRWLock FTransactionallySafeRWLock   Curves/Splines/TangentSpline.h  
ReparamTableVersion uint32   Curves/Splines/TangentSpline.h  
RotationCurve FInterpCurveQuat   Curves/Splines/TangentSpline.h  
ScaleCurve FInterpCurveVector   Curves/Splines/TangentSpline.h  
Version uint32   Curves/Splines/TangentSpline.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

int32 AddAttributeValue ( FName Name,
const AttrType& Value,
float Parameter
)

 Templated Attribute Interaction by Parameter functions. Curves/Splines/TangentSpline.h  

void AddPoint ( const FSplinePoint& Point
)

   Curves/Splines/TangentSpline.h  

AttrType EvaluateAttribute ( const FName& Name,
float Parameter
) const

   Curves/Splines/TangentSpline.h  

FVector EvaluateDerivative ( float Parameter
) const

   Curves/Splines/TangentSpline.h  

FVector EvaluatePosition ( float Parameter
) const

 Parameter based evaluation API. Curves/Splines/TangentSpline.h  

FQuat EvaluateRotation ( float Parameter
) const

   Curves/Splines/TangentSpline.h  

FVector EvaluateScale ( float Parameter
) const

   Curves/Splines/TangentSpline.h  

float FindNearestOnSegment ( const FVector& InLocation,
int32 SegmentIndex,
float& OutSquaredDistance
) const

   Curves/Splines/TangentSpline.h  

float GetAttributeParameter ( const FName& Name,
int32 Index
) const

   Curves/Splines/TangentSpline.h  

AttrType GetAttributeValue ( const FName& Name,
int32 Index
) const

 Templated Attribute Interaction by Index functions. Curves/Splines/TangentSpline.h  

float GetDistanceAtParameter ( float Parameter
) const

   Curves/Splines/TangentSpline.h  

int32 GetIndexAtParameter ( float Parameter
) const

   Curves/Splines/TangentSpline.h  

FVector GetInTangent ( const int32 Index
) const

   Curves/Splines/TangentSpline.h  

FVector GetLocation ( const int32 Index
) const

   Curves/Splines/TangentSpline.h  

int32 GetNumberOfPoints()

   Curves/Splines/TangentSpline.h  

FQuat GetOrientation ( int32 Index
) const

   Curves/Splines/TangentSpline.h  

FQuat GetOrientation ( float Param
) const

   Curves/Splines/TangentSpline.h  

FVector GetOutTangent ( const int32 Index
) const

   Curves/Splines/TangentSpline.h  

float GetParameterAtDistance ( float Distance
) const

   Curves/Splines/TangentSpline.h  

float GetParameterAtIndex ( int32 Index
) const

   Curves/Splines/TangentSpline.h  

FSplinePoint GetPoint ( int32 Index
) const

   Curves/Splines/TangentSpline.h  

FQuat GetRotation ( const int32 Index
) const

   Curves/Splines/TangentSpline.h  

FVector GetScale ( const int32 Index
) const

   Curves/Splines/TangentSpline.h  

float GetSegmentLength ( const int32 Index,
const float Param,
const FVector& Scale3D
) const

   Curves/Splines/TangentSpline.h  

float GetSplineLength()

   Curves/Splines/TangentSpline.h  

const FInterpCurveVector & GetSplinePointsPosition()

   Curves/Splines/TangentSpline.h  

const FInterpCurveQuat & GetSplinePointsRotation()

   Curves/Splines/TangentSpline.h  

const FInterpCurveVector & GetSplinePointsScale()

   Curves/Splines/TangentSpline.h  

EInterpCurveMode GetSplinePointType ( int32 Index
) const

   Curves/Splines/TangentSpline.h  

uint32 GetVersion()

   Curves/Splines/TangentSpline.h  

void InsertPoint ( const FSplinePoint& Point,
int32 Index
)

   Curves/Splines/TangentSpline.h  

bool IsNearlyEqual ( const FTangentSpline& Other,
const float RelativeTolerance,
const float AbsoluteTolerance
) const

   Curves/Splines/TangentSpline.h  

int32 NumAttributeValues ( FName Name
) const

 Templated Channel Creation/Query functions. Curves/Splines/TangentSpline.h  

void RemoveAttributeValue ( FName Name,
int32 Index
)

   Curves/Splines/TangentSpline.h  

void RemovePoint ( int32 Index
)

 Removes a point from the spline Curves/Splines/TangentSpline.h  

void Reparameterize ()

 Sets the parameters of all spline points according to the default policy (defined by the CVar 'TangentSpline.ParameterizationPolicy') Curves/Splines/TangentSpline.h  
Sets the parameters of all spline points according to the specified policy. Curves/Splines/TangentSpline.h  

void Reset()

   Curves/Splines/TangentSpline.h  

void ResetRotation()

   Curves/Splines/TangentSpline.h  

void ResetScale()

   Curves/Splines/TangentSpline.h  

int32 SetAttributeParameter ( const FName& Name,
int32 Index,
float ParentSpaceParameter
)

   Curves/Splines/TangentSpline.h  

void SetAttributeValue ( FName Name,
const AttrType& Value,
int32 Index
)

   Curves/Splines/TangentSpline.h  

void SetClosedLoop ( bool bInClosedLoop,
bool bUpdateSpline
)

   Curves/Splines/TangentSpline.h  

void SetInTangent ( const int32 Index,
const FVector& InTangent
)

   Curves/Splines/TangentSpline.h  

void SetLocation ( int32 Index,
const FVector& InLocation
)

   Curves/Splines/TangentSpline.h  

void SetOrientation ( int32 Index,
const FQuat& InOrientation
)

   Curves/Splines/TangentSpline.h  

void SetOutTangent ( const int32 Index,
const FVector& OutTangent
)

   Curves/Splines/TangentSpline.h  

bool SetParameterAtIndex ( int32 Index,
float Parameter
)

 Sets the parameter of a spline point. Curves/Splines/TangentSpline.h  

bool SetParameters ( const TArray< float >& InParameters
)

 Sets the parameters of all spline points. Curves/Splines/TangentSpline.h  

void SetRotation ( int32 Index,
const FQuat& InRotation
)

   Curves/Splines/TangentSpline.h  

void SetScale ( int32 Index,
const FVector& InScale
)

   Curves/Splines/TangentSpline.h  

void SetSplinePointType ( int32 Index,
EInterpCurveMode Type
)

   Curves/Splines/TangentSpline.h  

void SetVersion ( uint32 InVersion
)

   Curves/Splines/TangentSpline.h  

void UpdateSpline ()

 Updates the spline using the current configuration. Curves/Splines/TangentSpline.h  

void UpdateSpline ( const FUpdateSplineParams& Params
)

 Updates the spline configuration, then updates the spline. Curves/Splines/TangentSpline.h  

Public Virtual

Name Remarks Include Path Unreal Specifiers

virtual float FindNearest ( const FVector& InLocation,
float& OutSquaredDistance
) const

   Curves/Splines/TangentSpline.h  

Overridden from ISplineInterface

Name Remarks Include Path Unreal Specifiers

virtual bool Serialize ( FArchive& Ar
)

   Curves/Splines/TangentSpline.h  

virtual void SetClosedLoop ( bool bInClosedLoop
)

   Curves/Splines/TangentSpline.h  

Operators

Name Remarks Include Path Unreal Specifiers

bool operator!= ( const FTangentSpline& Other
) const

   Curves/Splines/TangentSpline.h  

FTangentSpline & operator= ( const FTangentSpline& Other
)

 Copy assignment Curves/Splines/TangentSpline.h  

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