1 // Copyright (C) 2019-2022 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_BSpline_H_
21 #define GeomAPI_BSpline_H_
23 #include <GeomAPI_Interface.h>
24 #include <GeomAPI_Curve.h>
30 class GeomAPI_BSpline;
32 //! Pointer on the object
33 typedef std::shared_ptr<GeomAPI_BSpline> GeomBSplinePtr;
35 /**\class GeomAPI_BSpline
37 * \brief B-spline in 3D
39 class GeomAPI_BSpline : public GeomAPI_Interface
42 /// Creation of B-spline defined by a curve
43 GEOMAPI_EXPORT GeomAPI_BSpline (const GeomCurvePtr& theCurve);
45 /// Degree of B-spline curve
46 GEOMAPI_EXPORT int degree() const;
48 /// Poles of B-spline curve
49 GEOMAPI_EXPORT std::list<std::shared_ptr<GeomAPI_Pnt> > poles() const;
51 /// Weights of B-spline poles
52 GEOMAPI_EXPORT std::list<double> weights() const;
54 /// Knots of B-spline curve
55 GEOMAPI_EXPORT std::list<double> knots() const;
57 /// Multiplicities of B-spline knots
58 GEOMAPI_EXPORT std::list<int> mults() const;
60 /// Return \c true if the curve is periodic
61 GEOMAPI_EXPORT bool isPeriodic() const;
63 /// Convert any curve into a B-spline curve
64 GEOMAPI_EXPORT static GeomBSplinePtr convertToBSpline (const GeomCurvePtr& theCurve);