1 // Created on: 1992-03-26
2 // Created by: Laurent BUCHARD
3 // Copyright (c) 1992-1999 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 _IntCurve_PConicTool_HeaderFile
18 #define _IntCurve_PConicTool_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Real.hxx>
25 #include <Standard_Integer.hxx>
26 class IntCurve_PConic;
31 //! Implementation of the ParTool from IntImpParGen
32 //! for conics of gp, using the class PConic from IntCurve.
33 class IntCurve_PConicTool
40 Standard_EXPORT static Standard_Real EpsX (const IntCurve_PConic& C);
42 Standard_EXPORT static Standard_Integer NbSamples (const IntCurve_PConic& C);
44 Standard_EXPORT static Standard_Integer NbSamples (const IntCurve_PConic& C, const Standard_Real U0, const Standard_Real U1);
46 Standard_EXPORT static gp_Pnt2d Value (const IntCurve_PConic& C, const Standard_Real X);
48 Standard_EXPORT static void D1 (const IntCurve_PConic& C, const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& T);
50 Standard_EXPORT static void D2 (const IntCurve_PConic& C, const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& T, gp_Vec2d& N);
75 #endif // _IntCurve_PConicTool_HeaderFile