1 // Copyright (C) 2007-2021 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 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, or (at your option) any later version.
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
23 // SMESH SMESH : implementation of SMESH idl descriptions
24 // File : StdMeshers_NumberOfSegments.hxx
25 // Moved here from SMESH_NumberOfSegments.hxx
26 // Author : Paul RASCLE, EDF
29 #ifndef _SMESH_NUMBEROFSEGMENTS_HXX_
30 #define _SMESH_NUMBEROFSEGMENTS_HXX_
32 #include "StdMeshers_Reversible1D.hxx"
33 #include "SMESH_Hypothesis.hxx"
34 #include "Utils_SALOME_Exception.hxx"
36 #include <smIdType.hxx>
41 * \brief This class represents hypothesis for 1d algorithm
43 * It provides parameters for subdivision an edge by various
44 * distribution types, considering the given number of resulting segments
46 class STDMESHERS_EXPORT StdMeshers_NumberOfSegments: public StdMeshers_Reversible1D
49 StdMeshers_NumberOfSegments(int hypId, SMESH_Gen* gen);
50 virtual ~StdMeshers_NumberOfSegments();
52 // Builds point distribution according to passed function
53 const std::vector<double>& BuildDistributionExpr( const char*, int, int );
54 const std::vector<double>& BuildDistributionTab( const std::vector<double>&, int, int );
57 * \brief Set the number of segments
58 * \param segmentsNumber - must be greater than zero
60 void SetNumberOfSegments(smIdType segmentsNumber);
63 * \brief Get the number of segments
65 smIdType GetNumberOfSegments() const;
68 * \brief This enumeration presents available types of distribution
72 DT_Regular, //!< equidistant distribution
73 DT_Scale, //!< scale distribution
74 DT_TabFunc, //!< distribution with density function presented by table
75 DT_ExprFunc //!< distribution with density function presented by expression
79 * \brief Set distribution type
81 void SetDistrType(DistrType typ);
84 * \brief Get distribution type
86 DistrType GetDistrType() const;
89 * \brief Set scale factor for scale distribution
90 * \param scaleFactor - positive value different from 1
92 * Throws SALOME_Exception if distribution type is not DT_Scale,
93 * or scaleFactor is not a positive value different from 1
95 virtual void SetScaleFactor(double scaleFactor);
98 * \brief Get scale factor for scale distribution
100 * Throws SALOME_Exception if distribution type is not DT_Scale
102 double GetScaleFactor() const;
105 * \brief Set table function for distribution DT_TabFunc
106 * \param table - this vector contains the pairs (parameter, value)
107 * following each by other, so the number of elements in the vector
108 * must be even. The parameters must be in range [0,1] and sorted in
109 * increase order. The values of function must be positive.
111 * Throws SALOME_Exception if distribution type is not DT_TabFunc
113 void SetTableFunction(const std::vector<double>& table);
116 * \brief Get table function for distribution DT_TabFunc
118 * Throws SALOME_Exception if distribution type is not DT_TabFunc
120 const std::vector<double>& GetTableFunction() const;
123 * \brief Set expression function for distribution DT_ExprFunc
124 * \param expr - string containing the expression of the function
125 * f(t), e.g. "sin(t)"
127 * Throws SALOME_Exception if distribution type is not DT_ExprFunc
129 void SetExpressionFunction( const char* expr);
132 * \brief Get expression function for distribution DT_ExprFunc
134 * Throws SALOME_Exception if distribution type is not DT_ExprFunc
136 const char* GetExpressionFunction() const;
139 * \brief Checks validity of the expression of the function f(t), e.g. "sin(t)".
140 * In case of validity returns a cleaned expression
141 * \param convMode - 0 for "Exponent mode", 1 for "Cut negative mode"
143 static std::string CheckExpressionFunction( const std::string& expr,
147 * \brief Set conversion mode. When it is 0, it means "exponent mode":
148 * the function of distribution of density is used as an exponent of 10, i,e, 10^f(t).
149 * When it is 1, it means "cut negative mode". The function of distribution is used as
150 * F(t), where F(t0)=f(t0), if f(t0)>=0, otherwise F(t0) = 0.
151 * This mode is sensible only when function distribution is used (DT_TabFunc or DT_ExprFunc)
153 * Throws SALOME_Exception if distribution type is not functional
155 void SetConversionMode( int conv );
158 * \brief Returns conversion mode
160 * Throws SALOME_Exception if distribution type is not functional
162 int ConversionMode() const;
165 * \brief Initialize number of segments by the mesh built on the geometry
166 * \param theMesh - the built mesh
167 * \param theShape - the geometry of interest
168 * \retval bool - true if parameter values have been successfully defined
170 virtual bool SetParametersByMesh(const SMESH_Mesh* theMesh, const TopoDS_Shape& theShape);
173 * \brief Initialize my parameter values by default parameters.
174 * \retval bool - true if parameter values have been successfully defined
176 virtual bool SetParametersByDefaults(const TDefaults& dflts, const SMESH_Mesh* theMesh=0);
178 virtual std::ostream & SaveTo(std::ostream & save);
179 virtual std::istream & LoadFrom(std::istream & load);
180 friend std::ostream& operator << (std::ostream & save, StdMeshers_NumberOfSegments & hyp);
181 friend std::istream& operator >> (std::istream & load, StdMeshers_NumberOfSegments & hyp);
184 smIdType _numberOfSegments; //!< an edge will be split on to this number of segments
185 DistrType _distrType; //!< the type of distribution of density function
186 double _scaleFactor; //!< the scale parameter for DT_Scale
187 std::vector<double> _table, _distr; //!< the table for DT_TabFunc, a sequence of pairs of numbers
188 std::string _func; //!< the expression of the function for DT_ExprFunc
189 int _convMode; //!< flag of conversion mode: 0=exponent, 1=cut negative