1 // SMESH StdMeshers : implementaion of point distribution algorithm
3 // Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
24 // File : StdMeshers_Distribution.hxx
25 // Author : Alexandre SOLOVYOV
29 #ifndef _STD_MESHERS_DISTRIBUTION_HXX_
30 #define _STD_MESHERS_DISTRIBUTION_HXX_
33 #include <math_Function.hxx>
34 #include <ExprIntrp_GenExp.hxx>
35 #include <Expr_Array1OfNamedUnknown.hxx>
36 #include <TColStd_Array1OfReal.hxx>
42 Function( const int );
44 virtual bool value( const double, double& ) const;
45 virtual double integral( const double, const double ) const = 0;
51 class FunctionIntegral : public Function
54 FunctionIntegral( const Function*, const double );
55 virtual ~FunctionIntegral();
56 virtual bool value( const double, double& ) const;
57 virtual double integral( const double, const double ) const;
64 class FunctionTable : public Function
67 FunctionTable( const std::vector<double>&, const int );
68 virtual ~FunctionTable();
69 virtual bool value( const double, double& ) const;
70 virtual double integral( const double, const double ) const;
73 bool findBounds( const double, int&, int& ) const;
75 //integral from x[i] to x[i+1]
76 double integral( const int i ) const;
78 //integral from x[i] to x[i]+d
79 //warning: function is presented as linear on interaval from x[i] to x[i]+d,
80 // for correct result d must be >=0 and <=x[i+1]-x[i]
81 double integral( const int i, const double d ) const;
84 std::vector<double> myData;
87 class FunctionExpr : public Function, public math_Function
90 FunctionExpr( const char*, const int );
91 virtual ~FunctionExpr();
92 virtual Standard_Boolean Value( Standard_Real, Standard_Real& );
93 virtual bool value( const double, double& ) const;
94 virtual double integral( const double, const double ) const;
97 Handle(ExprIntrp_GenExp) myExpr;
98 Expr_Array1OfNamedUnknown myVars;
99 TColStd_Array1OfReal myValues;
102 bool buildDistribution( const Function& f,
103 const double start, const double end,
105 vector<double>& data,
108 bool buildDistribution( const TCollection_AsciiString& f, const int conv, const double start, const double end,
109 const int nbSeg, vector<double>& data, const double eps );
110 bool buildDistribution( const std::vector<double>& f, const int conv, const double start, const double end,
111 const int nbSeg, vector<double>& data, const double eps );