Convert_ParabolaToBSplineCurve Class Reference

This algorithm converts a parabola into a non rational B-spline <br>

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:

Public Member Functions
	Convert_ParabolaToBSplineCurve (const gp_Parab2d &Prb, const Standard_Real U1, const Standard_Real 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. More...
Public Member Functions inherited from Convert_ConicToBSplineCurve
Standard_Integer	Degree () const
	Returns the degree of the BSpline curve whose data is <br> computed in this framework. More...
Standard_Integer	NbPoles () const
	Returns the number of poles of the BSpline curve whose <br> data is computed in this framework. More...
Standard_Integer	NbKnots () const
	Returns the number of knots of the BSpline curve whose <br> data is computed in this framework. More...
Standard_Boolean	IsPeriodic () const
	Returns true if the BSpline curve whose data is computed in <br> this framework is periodic. More...
gp_Pnt2d	Pole (const Standard_Integer Index) const
	Returns the pole of index Index to the poles table of the <br> BSpline curve whose data is computed in this framework. Exceptions Standard_OutOfRange if Index is outside the bounds of the poles table of the BSpline curve whose data is computed in this framework. More...
Standard_Real	Weight (const Standard_Integer Index) const
	Returns the weight of the pole of index Index to the poles <br> table of the BSpline curve whose data is computed in this framework. Exceptions Standard_OutOfRange if Index is outside the bounds of the poles table of the BSpline curve whose data is computed in this framework. More...
Standard_Real	Knot (const Standard_Integer Index) const
	Returns the knot of index Index to the knots table of the <br> BSpline curve whose data is computed in this framework. Exceptions Standard_OutOfRange if Index is outside the bounds of the knots table of the BSpline curve whose data is computed in this framework. More...
Standard_Integer	Multiplicity (const Standard_Integer Index) const
	Returns the multiplicity of the knot of index Index to the <br> knots table of the BSpline curve whose data is computed in this framework. Exceptions Standard_OutOfRange if Index is outside the bounds of the knots table of the BSpline curve whose data is computed in this framework. More...
void	BuildCosAndSin (const Convert_ParameterisationType Parametrisation, Handle< TColStd_HArray1OfReal > &CosNumerator, Handle< TColStd_HArray1OfReal > &SinNumerator, Handle< TColStd_HArray1OfReal > &Denominator, Standard_Integer &Degree, Handle< TColStd_HArray1OfReal > &Knots, Handle< TColStd_HArray1OfInteger > &Mults) const
void	BuildCosAndSin (const Convert_ParameterisationType Parametrisation, const Standard_Real UFirst, const Standard_Real ULast, Handle< TColStd_HArray1OfReal > &CosNumerator, Handle< TColStd_HArray1OfReal > &SinNumerator, Handle< TColStd_HArray1OfReal > &Denominator, Standard_Integer &Degree, Handle< TColStd_HArray1OfReal > &Knots, Handle< TColStd_HArray1OfInteger > &Mults) const

Additional Inherited Members
Protected Member Functions inherited from Convert_ConicToBSplineCurve
	Convert_ConicToBSplineCurve (const Standard_Integer NumberOfPoles, const Standard_Integer NumberOfKnots, const Standard_Integer Degree)
Protected Attributes inherited from Convert_ConicToBSplineCurve
Handle_TColgp_HArray1OfPnt2d	poles
Handle_TColStd_HArray1OfReal	weights
Handle_TColStd_HArray1OfReal	knots
Handle_TColStd_HArray1OfInteger	mults
Standard_Integer	degree
Standard_Integer	nbPoles
Standard_Integer	nbKnots
Standard_Boolean	isperiodic

Detailed Description

This algorithm converts a parabola into a non rational B-spline <br>

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	(	const gp_Parab2d &	Prb,
		const Standard_Real	U1,
		const Standard_Real	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.

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

• Convert_ParabolaToBSplineCurve.hxx