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>
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 computed in this framework. More... | |
| Standard_Integer | NbPoles () const |
| Returns the number of poles of the BSpline curve whose data is computed in this framework. More... | |
| Standard_Integer | NbKnots () const |
| Returns the number of knots of the BSpline curve whose data is computed in this framework. More... | |
| Standard_Boolean | IsPeriodic () const |
| Returns true if the BSpline curve whose data is computed in 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 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 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 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 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 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 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.
The documentation for this class was generated from the following file:
