1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
3 // File: GeomAPI_Circ2d.h
4 // Created: 29 May 2014
5 // Author: Artem ZHIDKOV
7 #ifndef GeomAPI_Circ2d_H_
8 #define GeomAPI_Circ2d_H_
10 #include <GeomAPI_Interface.h>
16 /**\class GeomAPI_Circ2d
21 class GeomAPI_Circ2d : public GeomAPI_Interface
24 /// Creation of circle defined by center point and circle radius
26 GeomAPI_Circ2d(const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
27 const std::shared_ptr<GeomAPI_Pnt2d>& theCirclePoint);
29 /// Creation of circle defined by center point, direction and circle radius
31 GeomAPI_Circ2d(const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
32 const std::shared_ptr<GeomAPI_Dir2d>& theDir, double theRadius);
34 /// Creation of circle defined by three points lying on it
36 GeomAPI_Circ2d(const std::shared_ptr<GeomAPI_Pnt2d>& theFirstPoint,
37 const std::shared_ptr<GeomAPI_Pnt2d>& theSecondPoint,
38 const std::shared_ptr<GeomAPI_Pnt2d>& theThirdPoint);
40 /// Return center of the circle
42 const std::shared_ptr<GeomAPI_Pnt2d> center() const;
44 /// Return radius of the circle
46 double radius() const;
48 /// Project point on line
50 const std::shared_ptr<GeomAPI_Pnt2d> project(
51 const std::shared_ptr<GeomAPI_Pnt2d>& thePoint) const;
53 /** \brief Computes the parameter of a given point on a circle. The point must be
54 * located either on the circle itself or relatively to the latter
55 * at a distance less than the tolerance value. Return FALSE if the point
56 * is beyond the tolerance limit or if computation fails.
57 * Max Tolerance value is currently limited to 1.e-4
58 * \param[in] thePoint point of origin.
59 * \param[in] theTolerance tolerance of computation.
60 * \param[out] theParameter resulting parameter.
62 GEOMAPI_EXPORT const bool parameter(const std::shared_ptr<GeomAPI_Pnt2d> thePoint,
63 const double theTolerance,
64 double& theParameter) const;
66 /** \brief Returns in thePoint the point of parameter theU.
67 * P = C + R * Cos (U) * XDir + R * Sin (U) * YDir where C is the center of the circle,
68 * XDir the XDirection and YDir the YDirection of the circle's local coordinate system.
69 * \param[in] theU parameter.
70 * \param[out] thePoint resulting point.
72 GEOMAPI_EXPORT void D0(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint);