include/opencascade/IntCurve_PConicTool.hxx

0001 // Created on: 1992-03-26
0002 // Created by: Laurent BUCHARD
0003 // Copyright (c) 1992-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _IntCurve_PConicTool_HeaderFile
0018 #define _IntCurve_PConicTool_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022
0023 #include <Standard_Integer.hxx>
0024 class IntCurve_PConic;
0025 class gp_Pnt2d;
0026 class gp_Vec2d;
0027
0028 //! Implementation of the ParTool from IntImpParGen
0029 //! for conics of gp, using the class PConic from IntCurve.
0030 class IntCurve_PConicTool
0031 {
0032 public:
0033   DEFINE_STANDARD_ALLOC
0034
0035   Standard_EXPORT static double EpsX(const IntCurve_PConic& C);
0036
0037   Standard_EXPORT static int NbSamples(const IntCurve_PConic& C);
0038
0039   Standard_EXPORT static int NbSamples(const IntCurve_PConic& C, const double U0, const double U1);
0040
0041   Standard_EXPORT static gp_Pnt2d Value(const IntCurve_PConic& C, const double X);
0042
0043   Standard_EXPORT static void D1(const IntCurve_PConic& C,
0044                                  const double           U,
0045                                  gp_Pnt2d&              P,
0046                                  gp_Vec2d&              T);
0047
0048   Standard_EXPORT static void D2(const IntCurve_PConic& C,
0049                                  const double           U,
0050                                  gp_Pnt2d&              P,
0051                                  gp_Vec2d&              T,
0052                                  gp_Vec2d&              N);
0053 };
0054
0055 #endif // _IntCurve_PConicTool_HeaderFile