/// Creation of circle defined by center point and circle radius
GeomAPI_Circ2d(const boost::shared_ptr<GeomAPI_Pnt2d>& theCenter,
const boost::shared_ptr<GeomAPI_Pnt2d>& theCirclePoint);
/// Creation of circle defined by center point, direction and circle radius
GeomAPI_Circ2d(const boost::shared_ptr<GeomAPI_Pnt2d>& theCenter,
/// Creation of circle defined by center point and circle radius
GeomAPI_Circ2d(const boost::shared_ptr<GeomAPI_Pnt2d>& theCenter,
const boost::shared_ptr<GeomAPI_Pnt2d>& theCirclePoint);
/// Creation of circle defined by center point, direction and circle radius
GeomAPI_Circ2d(const boost::shared_ptr<GeomAPI_Pnt2d>& theCenter,