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
0029 //! Implementation of the ParTool from IntImpParGen
0030 //! for conics of gp, using the class PConic from IntCurve.
0031 class IntCurve_PConicTool
0032 {
0033 public:
0034
0035   DEFINE_STANDARD_ALLOC
0036
0037
0038   Standard_EXPORT static Standard_Real EpsX (const IntCurve_PConic& C);
0039
0040   Standard_EXPORT static Standard_Integer NbSamples (const IntCurve_PConic& C);
0041
0042   Standard_EXPORT static Standard_Integer NbSamples (const IntCurve_PConic& C, const Standard_Real U0, const Standard_Real U1);
0043
0044   Standard_EXPORT static gp_Pnt2d Value (const IntCurve_PConic& C, const Standard_Real X);
0045
0046   Standard_EXPORT static void D1 (const IntCurve_PConic& C, const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& T);
0047
0048   Standard_EXPORT static void D2 (const IntCurve_PConic& C, const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& T, gp_Vec2d& N);
0049
0050
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0053 protected:
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0059 private:
0060
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0064
0065 };
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0072
0073 #endif // _IntCurve_PConicTool_HeaderFile