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_LocalLength.cxx
25 // Moved here from SMESH_LocalLength.cxx
26 // Author : Paul RASCLE, EDF
30 #include "StdMeshers_LocalLength.hxx"
32 #include "SMESH_Mesh.hxx"
33 #include "SMESH_Algo.hxx"
35 #include "utilities.h"
37 #include <BRep_Tool.hxx>
38 #include <GCPnts_AbscissaPoint.hxx>
39 #include <GeomAdaptor_Curve.hxx>
40 #include <Geom_Curve.hxx>
42 #include <TopLoc_Location.hxx>
43 #include <TopTools_IndexedMapOfShape.hxx>
45 #include <TopoDS_Edge.hxx>
46 #include <Precision.hxx>
50 //=============================================================================
54 //=============================================================================
56 StdMeshers_LocalLength::StdMeshers_LocalLength(int hypId, int studyId, SMESH_Gen * gen)
57 :SMESH_Hypothesis(hypId, studyId, gen)
60 _precision = Precision::Confusion();
61 _name = "LocalLength";
62 _param_algo_dim = 1; // is used by SMESH_Regular_1D
65 //=============================================================================
69 //=============================================================================
71 StdMeshers_LocalLength::~StdMeshers_LocalLength()
75 //=============================================================================
79 //=============================================================================
81 void StdMeshers_LocalLength::SetLength(double length) throw(SALOME_Exception)
83 double oldLength = _length;
85 throw SALOME_Exception(LOCALIZED("length must be positive"));
87 const double precision = 1e-7;
88 if (fabs(oldLength - _length) > precision)
89 NotifySubMeshesHypothesisModification();
92 //=============================================================================
96 //=============================================================================
98 double StdMeshers_LocalLength::GetLength() const
103 //=============================================================================
107 //=============================================================================
108 void StdMeshers_LocalLength::SetPrecision (double thePrecision) throw(SALOME_Exception)
110 double oldPrecision = _precision;
112 throw SALOME_Exception(LOCALIZED("precision cannot be negative"));
113 _precision = thePrecision;
114 const double precision = 1e-8;
115 if (fabs(oldPrecision - _precision) > precision)
116 NotifySubMeshesHypothesisModification();
119 //=============================================================================
123 //=============================================================================
124 double StdMeshers_LocalLength::GetPrecision() const
129 //=============================================================================
133 //=============================================================================
135 ostream & StdMeshers_LocalLength::SaveTo(ostream & save)
137 save << this->_length << " " << this->_precision;
141 //=============================================================================
145 //=============================================================================
147 istream & StdMeshers_LocalLength::LoadFrom(istream & load)
156 load.clear(ios::badbit | load.rdstate());
160 this->_precision = a;
163 load.clear(ios::badbit | load.rdstate());
164 // old format, without precision
171 //=============================================================================
175 //=============================================================================
177 ostream & operator <<(ostream & save, StdMeshers_LocalLength & hyp)
179 return hyp.SaveTo( save );
182 //=============================================================================
186 //=============================================================================
188 istream & operator >>(istream & load, StdMeshers_LocalLength & hyp)
190 return hyp.LoadFrom( load );
193 //================================================================================
195 * \brief Initialize segment length by the mesh built on the geometry
196 * \param theMesh - the built mesh
197 * \param theShape - the geometry of interest
198 * \retval bool - true if parameter values have been successfully defined
200 //================================================================================
202 bool StdMeshers_LocalLength::SetParametersByMesh(const SMESH_Mesh* theMesh,
203 const TopoDS_Shape& theShape)
205 if ( !theMesh || theShape.IsNull() )
210 Standard_Real UMin, UMax;
214 TopTools_IndexedMapOfShape edgeMap;
215 TopExp::MapShapes( theShape, TopAbs_EDGE, edgeMap );
216 for ( int iE = 1; iE <= edgeMap.Extent(); ++iE )
218 const TopoDS_Edge& edge = TopoDS::Edge( edgeMap( iE ));
219 Handle(Geom_Curve) C = BRep_Tool::Curve( edge, L, UMin, UMax );
220 GeomAdaptor_Curve AdaptCurve(C);
222 vector< double > params;
223 SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* >( theMesh )->GetMeshDS();
224 if ( SMESH_Algo::GetNodeParamOnEdge( aMeshDS, edge, params ))
226 for ( int i = 1; i < params.size(); ++i )
227 _length += GCPnts_AbscissaPoint::Length( AdaptCurve, params[ i-1 ], params[ i ]);
228 nbEdges += params.size() - 1;
234 _precision = Precision::Confusion();