1 // SMESH SMESH : implementaion of SMESH idl descriptions
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_AutomaticLength.hxx
25 // Author : Edward AGAPOV, OCC
29 #ifndef _SMESH_AutomaticLength_HXX_
30 #define _SMESH_AutomaticLength_HXX_
32 #include "SMESH_Hypothesis.hxx"
33 #include "Utils_SALOME_Exception.hxx"
42 * \brief 1D Hypothesis to compute segment length free of thinking
44 * It computes segment length basing on max shape size to shortest edge length ratio:
45 * S = S0 * f(L/Lmin) where f(x) = 1 + (2/Pi * 7 * atan(x/5) )
48 class StdMeshers_AutomaticLength:public SMESH_Hypothesis
51 StdMeshers_AutomaticLength(int hypId, int studyId, SMESH_Gen * gen);
52 virtual ~ StdMeshers_AutomaticLength();
54 double GetLength(const SMESH_Mesh* aMesh, const TopoDS_Shape& anEdge)
55 throw(SALOME_Exception);
59 * \param theFineness - The Fineness value [0.0-1.0],
63 * Raise if theFineness is out of range
64 * The "Initial Number of Elements on the Shortest Edge" (S0)
65 * is divided by (0.5 + 4.5 x theFineness)
67 void SetFineness(double theFineness)
68 throw(SALOME_Exception);
71 * \brief Return mesh Fineness
72 * \retval double - Fineness value [0.0-1.0]
74 double GetFineness() const { return _fineness; }
76 virtual std::ostream & SaveTo(std::ostream & save);
77 virtual std::istream & LoadFrom(std::istream & load);
78 friend std::ostream & operator <<(std::ostream & save, StdMeshers_AutomaticLength & hyp);
79 friend std::istream & operator >>(std::istream & load, StdMeshers_AutomaticLength & hyp);
82 * \brief Initialize Fineness by the mesh built on the geometry
83 * \param theMesh - the built mesh
84 * \param theShape - the geometry of interest
85 * \retval bool - true if parameter values have been successfully defined
87 virtual bool SetParametersByMesh(const SMESH_Mesh* theMesh, const TopoDS_Shape& theShape);
90 std::map<const TopoDS_TShape*, double> _TShapeToLength;
91 const SMESH_Mesh* _mesh;