include/opencascade/Extrema_FuncExtSS.hxx

0001 // Created on: 1996-01-09
0002 // Created by: Laurent PAINNOT
0003 // Copyright (c) 1996-1999 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 _Extrema_FuncExtSS_HeaderFile
0018 #define _Extrema_FuncExtSS_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022
0023 #include <gp_Pnt.hxx>
0024 #include <NCollection_Sequence.hxx>
0025 #include <Extrema_POnSurf.hxx>
0026 #include <math_FunctionSetWithDerivatives.hxx>
0027 #include <math_Vector.hxx>
0028 class Adaptor3d_Surface;
0029 class math_Matrix;
0030 class Extrema_POnSurf;
0031
0032 //! Function to find extrema of the
0033 //! distance between two surfaces.
0034 class Extrema_FuncExtSS : public math_FunctionSetWithDerivatives
0035 {
0036 public:
0037   DEFINE_STANDARD_ALLOC
0038
0039   Standard_EXPORT Extrema_FuncExtSS();
0040
0041   Standard_EXPORT Extrema_FuncExtSS(const Adaptor3d_Surface& S1, const Adaptor3d_Surface& S2);
0042
0043   //! sets the field mysurf of the function.
0044   Standard_EXPORT void Initialize(const Adaptor3d_Surface& S1, const Adaptor3d_Surface& S2);
0045
0046   Standard_EXPORT int NbVariables() const override;
0047
0048   Standard_EXPORT int NbEquations() const override;
0049
0050   //! Calculate Fi(U,V).
0051   Standard_EXPORT bool Value(const math_Vector& UV, math_Vector& F) override;
0052
0053   //! Calculate Fi'(U,V).
0054   Standard_EXPORT bool Derivatives(const math_Vector& UV, math_Matrix& DF) override;
0055
0056   //! Calculate Fi(U,V) and Fi'(U,V).
0057   Standard_EXPORT bool Values(const math_Vector& UV, math_Vector& F, math_Matrix& DF) override;
0058
0059   //! Save the found extremum.
0060   Standard_EXPORT int GetStateNumber() override;
0061
0062   //! Return the number of found extrema.
0063   Standard_EXPORT int NbExt() const;
0064
0065   //! Return the value of the Nth distance.
0066   Standard_EXPORT double SquareDistance(const int N) const;
0067
0068   //! Return the Nth extremum on S1.
0069   Standard_EXPORT const Extrema_POnSurf& PointOnS1(const int N) const;
0070
0071   //! Renvoie le Nieme extremum sur S2.
0072   Standard_EXPORT const Extrema_POnSurf& PointOnS2(const int N) const;
0073
0074 private:
0075   const Adaptor3d_Surface*              myS1;
0076   const Adaptor3d_Surface*              myS2;
0077   gp_Pnt                                myP1;
0078   gp_Pnt                                myP2;
0079   double                                myU1;
0080   double                                myV1;
0081   double                                myU2;
0082   double                                myV2;
0083   NCollection_Sequence<double>          mySqDist;
0084   NCollection_Sequence<Extrema_POnSurf> myPoint1;
0085   NCollection_Sequence<Extrema_POnSurf> myPoint2;
0086   bool                                  myS1init;
0087   bool                                  myS2init;
0088 };
0089
0090 #endif // _Extrema_FuncExtSS_HeaderFile