1 // Copyright (C) 2019-2020 CEA/DEN, EDF R&D
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 #ifndef GeomAPI_BSpline2d_H_
21 #define GeomAPI_BSpline2d_H_
23 #include <GeomAPI_Interface.h>
31 /** \class GeomAPI_BSpline2d
33 * \brief B-spline curve in 2D
35 class GeomAPI_BSpline2d : public GeomAPI_Interface
38 /// Creation of B-spline curve defined by list of poles and weights
39 GEOMAPI_EXPORT GeomAPI_BSpline2d(const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
40 const std::list<double>& theWeights,
41 const bool thePeriodic = false);
43 /// Creation of B-spline curve defined by list of poles and weights
44 GEOMAPI_EXPORT GeomAPI_BSpline2d(const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
45 const std::list<double>& theWeights,
47 const bool thePeriodic = false);
49 /// Returns true if curve is not initialized
50 GEOMAPI_EXPORT bool isNull() const;
52 /// Returns degree of the curve
53 GEOMAPI_EXPORT int degree() const;
55 /// \brief Calculate point on B-spline curve accrding to the given parameter
56 GEOMAPI_EXPORT void D0(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint);
58 /// \brief Calculate point and first derivative for B-spline curve accrding to the given parameter
59 GEOMAPI_EXPORT void D1(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint,
60 std::shared_ptr<GeomAPI_XY>& theDerivative);