1 // Created on: 1991-10-10
2 // Created by: Jean Claude VAUTHIER
3 // Copyright (c) 1991-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _Convert_HyperbolaToBSplineCurve_HeaderFile
18 #define _Convert_HyperbolaToBSplineCurve_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Convert_ConicToBSplineCurve.hxx>
25 #include <Standard_Real.hxx>
30 //! This algorithm converts a hyperbola into a rational B-spline curve.
31 //! The hyperbola is an Hypr2d from package gp with the
34 //! Loc + (MajorRadius * Cosh(U) * Xdir + MinorRadius * Sinh(U) * Ydir)
35 //! where Loc is the location point of the hyperbola, Xdir and Ydir are
36 //! the normalized directions of the local cartesian coordinate system
39 //! Convert, Hyperbola, BSplineCurve, 2D .
40 class Convert_HyperbolaToBSplineCurve : public Convert_ConicToBSplineCurve
48 //! The hyperbola H is limited between the parametric values U1, U2
49 //! and the equivalent B-spline curve has the same orientation as the
51 Standard_EXPORT Convert_HyperbolaToBSplineCurve(const gp_Hypr2d& H, const Standard_Real U1, const Standard_Real U2);
76 #endif // _Convert_HyperbolaToBSplineCurve_HeaderFile