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. <br> Use an Init function to define and build the BSpline curve. More...

	Geom2dAPI_PointsToBSpline (const TColgp_Array1OfPnt2d &Points, const Standard_Integer DegMin=3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real 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 More...

	Geom2dAPI_PointsToBSpline (const TColStd_Array1OfReal &YValues, const Standard_Real X0, const Standard_Real DX, const Standard_Integer DegMin=3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real Tol2D=1.0e-6)
	Approximate a BSpline Curve passing through an <br> array of Point. Of coordinates : <br> 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 More...

	Geom2dAPI_PointsToBSpline (const TColgp_Array1OfPnt2d &Points, const Approx_ParametrizationType ParType, const Standard_Integer DegMin=3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real 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 More...

	Geom2dAPI_PointsToBSpline (const TColgp_Array1OfPnt2d &Points, const TColStd_Array1OfReal &Parameters, const Standard_Integer DegMin=3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real 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 More...

	Geom2dAPI_PointsToBSpline (const TColgp_Array1OfPnt2d &Points, const Standard_Real Weight1, const Standard_Real Weight2, const Standard_Real Weight3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real 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 More...

void	Init (const TColgp_Array1OfPnt2d &Points, const Standard_Integer DegMin=3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real 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 More...

void	Init (const TColStd_Array1OfReal &YValues, const Standard_Real X0, const Standard_Real DX, const Standard_Integer DegMin=3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real Tol2D=1.0e-6)
	Approximate a BSpline Curve passing through an <br> array of Point. Of coordinates : <br> 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 More...

void	Init (const TColgp_Array1OfPnt2d &Points, const Approx_ParametrizationType ParType, const Standard_Integer DegMin=3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real 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 More...

void	Init (const TColgp_Array1OfPnt2d &Points, const TColStd_Array1OfReal &Parameters, const Standard_Integer DegMin=3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real 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 More...

void	Init (const TColgp_Array1OfPnt2d &Points, const Standard_Real Weight1, const Standard_Real Weight2, const Standard_Real Weight3, const Standard_Integer DegMax=8, const GeomAbs_Shape Continuity=GeomAbs_C2, const Standard_Real 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 More...

const Handle_Geom2d_BSplineCurve &	Curve () const
	Returns the approximate BSpline Curve More...

	operator Handle< Geom2d_BSplineCurve > () const

Standard_Boolean	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::Geom2dAPI_PointsToBSpline ( )

 Constructs an empty approximation algorithm. <br>

Use an Init function to define and build the BSpline curve.

Geom2dAPI_PointsToBSpline::Geom2dAPI_PointsToBSpline	(	const TColgp_Array1OfPnt2d &	Points,
		const Standard_Integer	DegMin = `3`,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	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::Geom2dAPI_PointsToBSpline	(	const TColStd_Array1OfReal &	YValues,
		const Standard_Real	X0,
		const Standard_Real	DX,
		const Standard_Integer	DegMin = `3`,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	Tol2D = `1.0e-6`
	)

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

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::Geom2dAPI_PointsToBSpline	(	const TColgp_Array1OfPnt2d &	Points,
		const Approx_ParametrizationType	ParType,
		const Standard_Integer	DegMin = `3`,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	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::Geom2dAPI_PointsToBSpline	(	const TColgp_Array1OfPnt2d &	Points,
		const TColStd_Array1OfReal &	Parameters,
		const Standard_Integer	DegMin = `3`,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	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::Geom2dAPI_PointsToBSpline	(	const TColgp_Array1OfPnt2d &	Points,
		const Standard_Real	Weight1,
		const Standard_Real	Weight2,
		const Standard_Real	Weight3,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	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

const Handle_Geom2d_BSplineCurve& Geom2dAPI_PointsToBSpline::Curve ( ) const

Returns the approximate BSpline Curve

void Geom2dAPI_PointsToBSpline::Init	(	const TColgp_Array1OfPnt2d &	Points,
		const Standard_Integer	DegMin = `3`,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	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 Geom2dAPI_PointsToBSpline::Init	(	const TColStd_Array1OfReal &	YValues,
		const Standard_Real	X0,
		const Standard_Real	DX,
		const Standard_Integer	DegMin = `3`,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	Tol2D = `1.0e-6`
	)

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

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

void Geom2dAPI_PointsToBSpline::Init	(	const TColgp_Array1OfPnt2d &	Points,
		const Approx_ParametrizationType	ParType,
		const Standard_Integer	DegMin = `3`,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	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 Geom2dAPI_PointsToBSpline::Init	(	const TColgp_Array1OfPnt2d &	Points,
		const TColStd_Array1OfReal &	Parameters,
		const Standard_Integer	DegMin = `3`,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	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 Geom2dAPI_PointsToBSpline::Init	(	const TColgp_Array1OfPnt2d &	Points,
		const Standard_Real	Weight1,
		const Standard_Real	Weight2,
		const Standard_Real	Weight3,
		const Standard_Integer	DegMax = `8`,
		const GeomAbs_Shape	Continuity = `GeomAbs_C2`,
		const Standard_Real	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

Standard_Boolean Geom2dAPI_PointsToBSpline::IsDone ( ) const

Geom2dAPI_PointsToBSpline::operator 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

Member Function Documentation