This class is used to approximate a BsplineCurve passing through an array of points, with a given Continuity. Describes functions for building a 2D BSpline curve which approximates a set of points. A PointsToBSpline object provides a framework for: More...

#include <Geom2dAPI_PointsToBSpline.hxx>

Public Member Functions
	Geom2dAPI_PointsToBSpline ()
	Constructs an empty approximation algorithm. Use an Init function to define and build the BSpline curve.

	Geom2dAPI_PointsToBSpline (const NCollection_Array1< gp_Pnt2d > &Points, const int DegMin=3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-6)
	Approximate a BSpline Curve passing through an array of Point. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

	Geom2dAPI_PointsToBSpline (const NCollection_Array1< double > &YValues, const double X0, const double DX, const int DegMin=3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-6)
	Approximate a BSpline Curve passing through an array of Point. Of coordinates :

	Geom2dAPI_PointsToBSpline (const NCollection_Array1< gp_Pnt2d > &Points, const Approx_ParametrizationType ParType, const int DegMin=3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-3)
	Approximate a BSpline Curve passing through an array of Point. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

	Geom2dAPI_PointsToBSpline (const NCollection_Array1< gp_Pnt2d > &Points, const NCollection_Array1< double > &Parameters, const int DegMin=3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-3)
	Approximate a BSpline Curve passing through an array of Point, which parameters are given by the array <Parameters>. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

	Geom2dAPI_PointsToBSpline (const NCollection_Array1< gp_Pnt2d > &Points, const double Weight1, const double Weight2, const double Weight3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol3D=1.0e-3)
	Approximate a BSpline Curve passing through an array of Point using variational smoothing algorithm, which tries to minimize additional criterium: Weight1CurveLength + Weight2Curvature + Weight3*Torsion.

void	Init (const NCollection_Array1< gp_Pnt2d > &Points, const int DegMin=3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-6)
	Approximate a BSpline Curve passing through an array of Point. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

void	Init (const NCollection_Array1< double > &YValues, const double X0, const double DX, const int DegMin=3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-6)
	Approximate a BSpline Curve passing through an array of Point. Of coordinates :

void	Init (const NCollection_Array1< gp_Pnt2d > &Points, const Approx_ParametrizationType ParType, const int DegMin=3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-3)
	Approximate a BSpline Curve passing through an array of Point. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

void	Init (const NCollection_Array1< gp_Pnt2d > &Points, const NCollection_Array1< double > &Parameters, const int DegMin=3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-3)
	Approximate a BSpline Curve passing through an array of Point, which parameters are given by the array <Parameters>. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

void	Init (const NCollection_Array1< gp_Pnt2d > &Points, const double Weight1, const double Weight2, const double Weight3, const int DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const double Tol2D=1.0e-3)
	Approximate a BSpline Curve passing through an array of Point using variational smoothing algorithm, which tries to minimize additional criterium: Weight1CurveLength + Weight2Curvature + Weight3*Torsion.

const occ::handle< Geom2d_BSplineCurve > &	Curve () const
	Returns the approximate BSpline Curve.

	operator occ::handle< Geom2d_BSplineCurve > () const

bool	IsDone () const

Detailed Description

This class is used to approximate a BsplineCurve passing through an array of points, with a given Continuity. Describes functions for building a 2D BSpline curve which approximates a set of points. A PointsToBSpline object provides a framework for:

defining the data of the BSpline curve to be built,
implementing the approximation algorithm, and
consulting the results

Constructor & Destructor Documentation

◆ Geom2dAPI_PointsToBSpline() [1/6]

Geom2dAPI_PointsToBSpline::Geom2dAPI_PointsToBSpline ( )

Constructs an empty approximation algorithm. Use an Init function to define and build the BSpline curve.

◆ Geom2dAPI_PointsToBSpline() [2/6]

Geom2dAPI_PointsToBSpline::Geom2dAPI_PointsToBSpline	(	const NCollection_Array1< gp_Pnt2d > &	Points,
		const int	DegMin = 3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-6 )

Approximate a BSpline Curve passing through an array of Point. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

◆ Geom2dAPI_PointsToBSpline() [3/6]

Geom2dAPI_PointsToBSpline::Geom2dAPI_PointsToBSpline	(	const NCollection_Array1< double > &	YValues,
		const double	X0,
		const double	DX,
		const int	DegMin = 3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-6 )

Approximate a BSpline Curve passing through an array of Point. Of coordinates :

X = X0 + DX * (i-YValues.Lower()) Y = YValues(i)

With i in the range YValues.Lower(), YValues.Upper()

The BSpline will be parametrized from t = X0 to X0 + DX * (YValues.Upper() - YValues.Lower())

And will satisfy X(t) = t

The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D

◆ Geom2dAPI_PointsToBSpline() [4/6]

Geom2dAPI_PointsToBSpline::Geom2dAPI_PointsToBSpline	(	const NCollection_Array1< gp_Pnt2d > &	Points,
		const Approx_ParametrizationType	ParType,
		const int	DegMin = 3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-3 )

Approximate a BSpline Curve passing through an array of Point. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

◆ Geom2dAPI_PointsToBSpline() [5/6]

Geom2dAPI_PointsToBSpline::Geom2dAPI_PointsToBSpline	(	const NCollection_Array1< gp_Pnt2d > &	Points,
		const NCollection_Array1< double > &	Parameters,
		const int	DegMin = 3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-3 )

Approximate a BSpline Curve passing through an array of Point, which parameters are given by the array <Parameters>. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

◆ Geom2dAPI_PointsToBSpline() [6/6]

Geom2dAPI_PointsToBSpline::Geom2dAPI_PointsToBSpline	(	const NCollection_Array1< gp_Pnt2d > &	Points,
		const double	Weight1,
		const double	Weight2,
		const double	Weight3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol3D = 1.0e-3 )

Approximate a BSpline Curve passing through an array of Point using variational smoothing algorithm, which tries to minimize additional criterium: Weight1*CurveLength + Weight2*Curvature + Weight3*Torsion.

Member Function Documentation

◆ Curve()

const occ::handle< Geom2d_BSplineCurve > & Geom2dAPI_PointsToBSpline::Curve ( ) const

Returns the approximate BSpline Curve.

◆ Init() [1/5]

void Geom2dAPI_PointsToBSpline::Init	(	const NCollection_Array1< double > &	YValues,
		const double	X0,
		const double	DX,
		const int	DegMin = 3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-6 )

Approximate a BSpline Curve passing through an array of Point. Of coordinates :

X = X0 + DX * (i-YValues.Lower()) Y = YValues(i)

With i in the range YValues.Lower(), YValues.Upper()

The BSpline will be parametrized from t = X0 to X0 + DX * (YValues.Upper() - YValues.Lower())

And will satisfy X(t) = t

The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D

◆ Init() [2/5]

void Geom2dAPI_PointsToBSpline::Init	(	const NCollection_Array1< gp_Pnt2d > &	Points,
		const Approx_ParametrizationType	ParType,
		const int	DegMin = 3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-3 )

Approximate a BSpline Curve passing through an array of Point. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

◆ Init() [3/5]

void Geom2dAPI_PointsToBSpline::Init	(	const NCollection_Array1< gp_Pnt2d > &	Points,
		const double	Weight1,
		const double	Weight2,
		const double	Weight3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-3 )

Approximate a BSpline Curve passing through an array of Point using variational smoothing algorithm, which tries to minimize additional criterium: Weight1*CurveLength + Weight2*Curvature + Weight3*Torsion.

◆ Init() [4/5]

void Geom2dAPI_PointsToBSpline::Init	(	const NCollection_Array1< gp_Pnt2d > &	Points,
		const int	DegMin = 3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-6 )

Approximate a BSpline Curve passing through an array of Point. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

◆ Init() [5/5]

void Geom2dAPI_PointsToBSpline::Init	(	const NCollection_Array1< gp_Pnt2d > &	Points,
		const NCollection_Array1< double > &	Parameters,
		const int	DegMin = 3,
		const int	DegMax = 8,
		const GeomAbs_Shape	Continuity = GeomAbs_C2,
		const double	Tol2D = 1.0e-3 )

Approximate a BSpline Curve passing through an array of Point, which parameters are given by the array <Parameters>. The resulting BSpline will have the following properties: 1- his degree will be in the range [Degmin,Degmax] 2- his continuity will be at least <Continuity> 3- the distance from the point <Points> to the BSpline will be lower to Tol2D.

◆ IsDone()

bool Geom2dAPI_PointsToBSpline::IsDone ( ) const

◆ operator occ::handle< Geom2d_BSplineCurve >()

Geom2dAPI_PointsToBSpline::operator occ::handle< Geom2d_BSplineCurve > ( ) const

The documentation for this class was generated from the following file:

Geom2dAPI_PointsToBSpline.hxx

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ Geom2dAPI_PointsToBSpline() [1/6]

◆ Geom2dAPI_PointsToBSpline() [2/6]

◆ Geom2dAPI_PointsToBSpline() [3/6]

◆ Geom2dAPI_PointsToBSpline() [4/6]

◆ Geom2dAPI_PointsToBSpline() [5/6]

◆ Geom2dAPI_PointsToBSpline() [6/6]

Member Function Documentation

◆ Curve()

◆ Init() [1/5]

◆ Init() [2/5]

◆ Init() [3/5]

◆ Init() [4/5]

◆ Init() [5/5]

◆ IsDone()

◆ operator occ::handle< Geom2d_BSplineCurve >()