This algorithm converts a parabola into a non rational B-spline curve. The parabola is a Parab2d from package gp with the parametrization P (U) = Loc + F * (U*U * Xdir + 2 * U * Ydir) where Loc is the apex of the parabola, Xdir is the normalized direction of the symmetry axis of the parabola, Ydir is the normalized direction of the directrix and F is the focal length. KeyWords : Convert, Parabola, BSplineCurve, 2D . More...

#include <Convert_ParabolaToBSplineCurve.hxx>

Inheritance diagram for Convert_ParabolaToBSplineCurve:

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Public Member Functions
	Convert_ParabolaToBSplineCurve (const gp_Parab2d &Prb, const double U1, const double U2)
	The parabola Prb is limited between the parametric values U1, U2 and the equivalent B-spline curve as the same orientation as the parabola Prb.

Public Member Functions inherited from Convert_ConicToBSplineCurve
int	Degree () const
	Returns the degree of the BSpline curve whose data is computed in this framework.

int	NbPoles () const
	Returns the number of poles of the BSpline curve whose data is computed in this framework.

int	NbKnots () const
	Returns the number of knots of the BSpline curve whose data is computed in this framework.

bool	IsPeriodic () const
	Returns true if the BSpline curve whose data is computed in this framework is periodic.

gp_Pnt2d	Pole (const int theIndex) const
	Returns the pole of index Index to the poles table of the BSpline curve whose data is computed in this framework.

double	Weight (const int theIndex) const
	Returns the weight of the pole of index Index to the poles table of the BSpline curve whose data is computed in this framework.

double	Knot (const int theIndex) const
	Returns the knot of index Index to the knots table of the BSpline curve whose data is computed in this framework.

int	Multiplicity (const int theIndex) const
	Returns the multiplicity of the knot of index Index to the knots table of the BSpline curve whose data is computed in this framework.

const NCollection_Array1< gp_Pnt2d > &	Poles () const
	Returns the poles of the BSpline curve.

const NCollection_Array1< double > &	Weights () const
	Returns the weights of the BSpline curve.

const NCollection_Array1< double > &	Knots () const
	Returns the knots of the BSpline curve.

const NCollection_Array1< int > &	Multiplicities () const
	Returns the multiplicities of the BSpline curve.

void	BuildCosAndSin (const Convert_ParameterisationType theParametrisation, occ::handle< NCollection_HArray1< double > > &theCosNumerator, occ::handle< NCollection_HArray1< double > > &theSinNumerator, occ::handle< NCollection_HArray1< double > > &theDenominator, int &theDegree, occ::handle< NCollection_HArray1< double > > &theKnots, occ::handle< NCollection_HArray1< int > > &theMults) const
	Legacy API returning handle arrays for compatibility.

void	BuildCosAndSin (const Convert_ParameterisationType theParametrisation, const double theUFirst, const double theULast, occ::handle< NCollection_HArray1< double > > &theCosNumerator, occ::handle< NCollection_HArray1< double > > &theSinNumerator, occ::handle< NCollection_HArray1< double > > &theDenominator, int &theDegree, occ::handle< NCollection_HArray1< double > > &theKnots, occ::handle< NCollection_HArray1< int > > &theMults) const
	Legacy API returning handle arrays for compatibility.

Additional Inherited Members
Protected Member Functions inherited from Convert_ConicToBSplineCurve
	Convert_ConicToBSplineCurve (const int theNumberOfPoles, const int theNumberOfKnots, const int theDegree)

void	BuildCosAndSin (const Convert_ParameterisationType theParametrisation, NCollection_Array1< double > &theCosNumerator, NCollection_Array1< double > &theSinNumerator, NCollection_Array1< double > &theDenominator, int &theDegree, NCollection_Array1< double > &theKnots, NCollection_Array1< int > &theMults) const

void	BuildCosAndSin (const Convert_ParameterisationType theParametrisation, const double theUFirst, const double theULast, NCollection_Array1< double > &theCosNumerator, NCollection_Array1< double > &theSinNumerator, NCollection_Array1< double > &theDenominator, int &theDegree, NCollection_Array1< double > &theKnots, NCollection_Array1< int > &theMults) const

Protected Attributes inherited from Convert_ConicToBSplineCurve
NCollection_Array1< gp_Pnt2d >	myPoles

NCollection_Array1< double >	myWeights

NCollection_Array1< double >	myKnots

NCollection_Array1< int >	myMults

int	myDegree = 0

bool	myIsPeriodic = false

Detailed Description

This algorithm converts a parabola into a non rational B-spline curve. The parabola is a Parab2d from package gp with the parametrization P (U) = Loc + F * (U*U * Xdir + 2 * U * Ydir) where Loc is the apex of the parabola, Xdir is the normalized direction of the symmetry axis of the parabola, Ydir is the normalized direction of the directrix and F is the focal length. KeyWords : Convert, Parabola, BSplineCurve, 2D .

Constructor & Destructor Documentation

◆ Convert_ParabolaToBSplineCurve()

Convert_ParabolaToBSplineCurve::Convert_ParabolaToBSplineCurve	(	const gp_Parab2d &	Prb,
		const double	U1,
		const double	U2 )

The parabola Prb is limited between the parametric values U1, U2 and the equivalent B-spline curve as the same orientation as the parabola Prb.

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

Convert_ParabolaToBSplineCurve.hxx

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Convert_ParabolaToBSplineCurve()