1 // SMESH StdMeshers_StartEndLength : 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_StartEndLength.cxx
28 #include "StdMeshers_StartEndLength.hxx"
30 #include "SMESH_Algo.hxx"
31 #include "SMESH_Mesh.hxx"
33 #include <BRep_Tool.hxx>
34 #include <GCPnts_AbscissaPoint.hxx>
35 #include <GeomAdaptor_Curve.hxx>
36 #include <Geom_Curve.hxx>
38 #include <TopLoc_Location.hxx>
39 #include <TopTools_IndexedMapOfShape.hxx>
41 #include <TopoDS_Edge.hxx>
45 //=============================================================================
49 //=============================================================================
51 StdMeshers_StartEndLength::StdMeshers_StartEndLength(int hypId,
54 :SMESH_Hypothesis(hypId, studyId, gen)
58 _name = "StartEndLength";
59 _param_algo_dim = 1; // is used by SMESH_Regular_1D
62 //=============================================================================
66 //=============================================================================
68 StdMeshers_StartEndLength::~StdMeshers_StartEndLength()
72 //=============================================================================
76 //=============================================================================
78 void StdMeshers_StartEndLength::SetLength(double length, bool isStartLength)
79 throw(SALOME_Exception)
81 if ( (isStartLength ? _begLength : _endLength) != length ) {
83 throw SALOME_Exception(LOCALIZED("length must be positive"));
89 NotifySubMeshesHypothesisModification();
93 //=============================================================================
97 //=============================================================================
99 double StdMeshers_StartEndLength::GetLength(bool isStartLength) const
101 return isStartLength ? _begLength : _endLength;
104 //=============================================================================
108 //=============================================================================
110 ostream & StdMeshers_StartEndLength::SaveTo(ostream & save)
112 save << _begLength << " " <<_endLength;
116 //=============================================================================
120 //=============================================================================
122 istream & StdMeshers_StartEndLength::LoadFrom(istream & load)
125 isOK = (load >> _begLength);
127 load.clear(ios::badbit | load.rdstate());
128 isOK = (load >> _endLength);
130 load.clear(ios::badbit | load.rdstate());
134 //=============================================================================
138 //=============================================================================
140 ostream & operator <<(ostream & save, StdMeshers_StartEndLength & hyp)
142 return hyp.SaveTo( save );
145 //=============================================================================
149 //=============================================================================
151 istream & operator >>(istream & load, StdMeshers_StartEndLength & hyp)
153 return hyp.LoadFrom( load );
156 //================================================================================
158 * \brief Initialize start and end length by the mesh built on the geometry
159 * \param theMesh - the built mesh
160 * \param theShape - the geometry of interest
161 * \retval bool - true if parameter values have been successfully defined
163 //================================================================================
165 bool StdMeshers_StartEndLength::SetParametersByMesh(const SMESH_Mesh* theMesh,
166 const TopoDS_Shape& theShape)
168 if ( !theMesh || theShape.IsNull() )
171 _begLength = _endLength = 0.;
173 Standard_Real UMin, UMax;
177 TopTools_IndexedMapOfShape edgeMap;
178 TopExp::MapShapes( theShape, TopAbs_EDGE, edgeMap );
179 for ( int i = 1; i <= edgeMap.Extent(); ++i )
181 const TopoDS_Edge& edge = TopoDS::Edge( edgeMap( i ));
182 Handle(Geom_Curve) C = BRep_Tool::Curve(edge, L, UMin, UMax);
183 GeomAdaptor_Curve AdaptCurve(C);
185 vector< double > params;
186 SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* >( theMesh )->GetMeshDS();
187 if ( SMESH_Algo::GetNodeParamOnEdge( aMeshDS, edge, params ))
190 _begLength += GCPnts_AbscissaPoint::Length( AdaptCurve, params[0], params[1]);
191 int nb = params.size();
192 _endLength += GCPnts_AbscissaPoint::Length( AdaptCurve, params[nb-2], params[nb-1]);
196 _begLength /= nbEdges;
197 _endLength /= nbEdges;