SALOME - SMESH
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00001 // Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE 00002 // 00003 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN, 00004 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS 00005 // 00006 // This library is free software; you can redistribute it and/or 00007 // modify it under the terms of the GNU Lesser General Public 00008 // License as published by the Free Software Foundation; either 00009 // version 2.1 of the License. 00010 // 00011 // This library is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 // Lesser General Public License for more details. 00015 // 00016 // You should have received a copy of the GNU Lesser General Public 00017 // License along with this library; if not, write to the Free Software 00018 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00019 // 00020 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com 00021 // 00022 // SMESH StdMeshers : implementaion of point distribution algorithm 00023 // File : StdMeshers_Distribution.hxx 00024 // Author : Alexandre SOLOVYOV 00025 // Module : SMESH 00026 // $Header$ 00027 // 00028 #ifndef _STD_MESHERS_DISTRIBUTION_HXX_ 00029 #define _STD_MESHERS_DISTRIBUTION_HXX_ 00030 00031 #include "SMESH_StdMeshers.hxx" 00032 00033 #include <vector> 00034 #include <math_Function.hxx> 00035 #include <ExprIntrp_GenExp.hxx> 00036 #include <Expr_Array1OfNamedUnknown.hxx> 00037 #include <TColStd_Array1OfReal.hxx> 00038 00039 00040 class STDMESHERS_EXPORT Function 00041 { 00042 public: 00043 Function( const int ); 00044 virtual ~Function(); 00045 virtual bool value( const double, double& ) const; 00046 virtual double integral( const double, const double ) const = 0; 00047 00048 private: 00049 int myConv; 00050 }; 00051 00052 class STDMESHERS_EXPORT FunctionIntegral : public Function 00053 { 00054 public: 00055 FunctionIntegral( const Function*, const double ); 00056 virtual ~FunctionIntegral(); 00057 virtual bool value( const double, double& ) const; 00058 virtual double integral( const double, const double ) const; 00059 00060 private: 00061 Function* myFunc; 00062 double myStart; 00063 }; 00064 00065 class STDMESHERS_EXPORT FunctionTable : public Function 00066 { 00067 public: 00068 FunctionTable( const std::vector<double>&, const int ); 00069 virtual ~FunctionTable(); 00070 virtual bool value( const double, double& ) const; 00071 virtual double integral( const double, const double ) const; 00072 00073 private: 00074 bool findBounds( const double, int&, int& ) const; 00075 00076 //integral from x[i] to x[i+1] 00077 double integral( const int i ) const; 00078 00079 //integral from x[i] to x[i]+d 00080 //warning: function is presented as linear on interaval from x[i] to x[i]+d, 00081 // for correct result d must be >=0 and <=x[i+1]-x[i] 00082 double integral( const int i, const double d ) const; 00083 00084 private: 00085 std::vector<double> myData; 00086 }; 00087 00088 class STDMESHERS_EXPORT FunctionExpr : public Function, public math_Function 00089 { 00090 public: 00091 FunctionExpr( const char*, const int ); 00092 virtual ~FunctionExpr(); 00093 virtual Standard_Boolean Value( const Standard_Real, Standard_Real& ); 00094 virtual bool value( const double, double& ) const; 00095 virtual double integral( const double, const double ) const; 00096 00097 private: 00098 Handle(ExprIntrp_GenExp) myExpr; 00099 Expr_Array1OfNamedUnknown myVars; 00100 TColStd_Array1OfReal myValues; 00101 }; 00102 00103 STDMESHERS_EXPORT 00104 bool buildDistribution( const Function& f, 00105 const double start, const double end, 00106 const int nbSeg, 00107 std::vector<double>& data, 00108 const double eps ); 00109 00110 STDMESHERS_EXPORT 00111 bool buildDistribution( const TCollection_AsciiString& f, const int conv, const double start, const double end, 00112 const int nbSeg, std::vector<double>& data, const double eps ); 00113 STDMESHERS_EXPORT 00114 bool buildDistribution( const std::vector<double>& f, const int conv, const double start, const double end, 00115 const int nbSeg, std::vector<double>& data, const double eps ); 00116 00117 #endif