1 // Copyright (C) 2014-2017 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
18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
21 #ifndef GeomAPI_Circ2d_H_
22 #define GeomAPI_Circ2d_H_
24 #include <GeomAPI_Interface.h>
32 /**\class GeomAPI_Circ2d
37 class GeomAPI_Circ2d : public GeomAPI_Interface
40 /// Creation of circle defined by center point and circle radius
42 GeomAPI_Circ2d(const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
43 const std::shared_ptr<GeomAPI_Pnt2d>& theCirclePoint);
45 /// Creation of circle defined by center point, direction and circle radius
47 GeomAPI_Circ2d(const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
48 const std::shared_ptr<GeomAPI_Dir2d>& theDir, double theRadius);
50 /// Return center of the circle
52 const std::shared_ptr<GeomAPI_Pnt2d> center() const;
54 /// Return radius of the circle
56 double radius() const;
58 /// Project point on line
60 const std::shared_ptr<GeomAPI_Pnt2d> project(
61 const std::shared_ptr<GeomAPI_Pnt2d>& thePoint) const;
63 /** \brief Computes the parameter of a given point on a circle. The point must be
64 * located either on the circle itself or relatively to the latter
65 * at a distance less than the tolerance value. Return FALSE if the point
66 * is beyond the tolerance limit or if computation fails.
67 * Max Tolerance value is currently limited to 1.e-4
68 * \param[in] thePoint point of origin.
69 * \param[in] theTolerance tolerance of computation.
70 * \param[out] theParameter resulting parameter.
72 GEOMAPI_EXPORT const bool parameter(const std::shared_ptr<GeomAPI_Pnt2d> thePoint,
73 const double theTolerance,
74 double& theParameter) const;
76 /** \brief Returns in thePoint the point of parameter theU.
77 * P = C + R * Cos (U) * XDir + R * Sin (U) * YDir where C is the center of the circle,
78 * XDir the XDirection and YDir the YDirection of the circle's local coordinate system.
79 * \param[in] theU parameter.
80 * \param[out] thePoint resulting point.
82 GEOMAPI_EXPORT void D0(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint);