include/opencascade/Contap_SurfProps.hxx

0001 // Created on: 1995-02-24
0002 // Created by: Jacques GOUSSARD
0003 // Copyright (c) 1995-1999 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 _Contap_SurfProps_HeaderFile
0018 #define _Contap_SurfProps_HeaderFile
0019
0020 #include <Adaptor3d_Surface.hxx>
0021
0022 class gp_Pnt;
0023 class gp_Vec;
0024
0025 //! Internal tool used  to compute the  normal and its
0026 //! derivatives.
0027 class Contap_SurfProps
0028 {
0029 public:
0030
0031   DEFINE_STANDARD_ALLOC
0032
0033
0034   //! Computes  the point <P>, and  normal vector <N> on
0035   //! <S> at parameters U,V.
0036   Standard_EXPORT static void Normale (const Handle(Adaptor3d_Surface)& S, const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& N);
0037
0038   //! Computes  the point <P>, and  normal vector <N> on
0039   //! <S> at parameters U,V.
0040   Standard_EXPORT static void DerivAndNorm (const Handle(Adaptor3d_Surface)& S, const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& d1u, gp_Vec& d1v, gp_Vec& N);
0041
0042   //! Computes the point <P>, normal vector <N>, and its
0043   //! derivatives <Dnu> and <Dnv> on <S> at parameters U,V.
0044   Standard_EXPORT static void NormAndDn (const Handle(Adaptor3d_Surface)& S, const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& N, gp_Vec& Dnu, gp_Vec& Dnv);
0045
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0049 protected:
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0055 private:
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0061 };
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0069 #endif // _Contap_SurfProps_HeaderFile