1 // Copyright (C) 2007-2010 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.
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 : implementaion of SMESH idl descriptions
24 // File : StdMeshers_AutomaticLength.hxx
25 // Author : Edward AGAPOV, OCC
28 #ifndef _SMESH_AutomaticLength_HXX_
29 #define _SMESH_AutomaticLength_HXX_
31 #include "SMESH_StdMeshers.hxx"
33 #include "SMESH_Hypothesis.hxx"
34 #include "Utils_SALOME_Exception.hxx"
43 * \brief 1D Hypothesis to compute segment length free of thinking
45 * It computes segment length basing on max shape size to shortest edge length ratio:
46 * S = S0 * f(L/Lmin) where f(x) = 1 + (2/Pi * 7 * atan(x/5) )
49 class STDMESHERS_EXPORT StdMeshers_AutomaticLength:public SMESH_Hypothesis
52 StdMeshers_AutomaticLength(int hypId, int studyId, SMESH_Gen * gen);
53 virtual ~ StdMeshers_AutomaticLength();
56 * \brief Computes segment for a given edge
58 double GetLength(const SMESH_Mesh* aMesh, const TopoDS_Shape& anEdge)
59 throw(SALOME_Exception);
62 * \brief Computes segment length for an edge of given length
64 double GetLength(const SMESH_Mesh* aMesh, const double edgeLength)
65 throw(SALOME_Exception);
69 * \param theFineness - The Fineness value [0.0-1.0],
73 * Raise if theFineness is out of range
74 * The "Initial Number of Elements on the Shortest Edge" (S0)
75 * is divided by (0.5 + 4.5 x theFineness)
77 void SetFineness(double theFineness)
78 throw(SALOME_Exception);
81 * \brief Return mesh Fineness
82 * \retval double - Fineness value [0.0-1.0]
84 double GetFineness() const { return _fineness; }
86 virtual std::ostream & SaveTo(std::ostream & save);
87 virtual std::istream & LoadFrom(std::istream & load);
88 friend std::ostream & operator <<(std::ostream & save, StdMeshers_AutomaticLength & hyp);
89 friend std::istream & operator >>(std::istream & load, StdMeshers_AutomaticLength & hyp);
92 * \brief Initialize Fineness by the mesh built on the geometry
93 * \param theMesh - the built mesh
94 * \param theShape - the geometry of interest
95 * \retval bool - true if parameter values have been successfully defined
97 virtual bool SetParametersByMesh(const SMESH_Mesh* theMesh, const TopoDS_Shape& theShape);
100 * \brief Initialize my parameter values by default parameters.
101 * \retval bool - true if parameter values have been successfully defined
103 virtual bool SetParametersByDefaults(const TDefaults& dflts, const SMESH_Mesh* theMesh=0);
106 std::map<const TopoDS_TShape*, double> _TShapeToLength;
107 const SMESH_Mesh* _mesh;
108 double _fineness, _S0, _minLen;