1 // Copyright (C) 2007-2011 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_SegmentLengthAroundVertex.cxx
27 #include "StdMeshers_SegmentLengthAroundVertex.hxx"
29 #include "SMESH_Mesh.hxx"
30 #include "SMESH_Algo.hxx"
31 #include "SMDS_MeshNode.hxx"
32 #include "SMESHDS_Mesh.hxx"
33 #include "SMESHDS_SubMesh.hxx"
34 #include "SMESH_MesherHelper.hxx"
36 #include "utilities.h"
38 #include <BRepAdaptor_Curve.hxx>
39 #include <GCPnts_AbscissaPoint.hxx>
40 #include <TopTools_IndexedMapOfShape.hxx>
42 #include <TopoDS_Edge.hxx>
46 //=============================================================================
50 //=============================================================================
52 StdMeshers_SegmentLengthAroundVertex::StdMeshers_SegmentLengthAroundVertex
53 (int hypId, int studyId, SMESH_Gen * gen)
54 :SMESH_Hypothesis(hypId, studyId, gen)
57 _name = "SegmentLengthAroundVertex";
58 _param_algo_dim = 0; // is used by StdMeshers_SegmentAroundVertex_0D
61 //=============================================================================
65 //=============================================================================
67 StdMeshers_SegmentLengthAroundVertex::~StdMeshers_SegmentLengthAroundVertex()
71 //=============================================================================
75 //=============================================================================
77 void StdMeshers_SegmentLengthAroundVertex::SetLength(double length) throw(SALOME_Exception)
80 throw SALOME_Exception(LOCALIZED("length must be positive"));
81 if (_length != length) {
83 NotifySubMeshesHypothesisModification();
87 //=============================================================================
91 //=============================================================================
93 double StdMeshers_SegmentLengthAroundVertex::GetLength() const
98 //=============================================================================
102 //=============================================================================
104 ostream & StdMeshers_SegmentLengthAroundVertex::SaveTo(ostream & save)
106 save << this->_length;
110 //=============================================================================
114 //=============================================================================
116 istream & StdMeshers_SegmentLengthAroundVertex::LoadFrom(istream & load)
124 load.clear(ios::badbit | load.rdstate());
128 //=============================================================================
132 //=============================================================================
134 ostream & operator <<(ostream & save, StdMeshers_SegmentLengthAroundVertex & hyp)
136 return hyp.SaveTo( save );
139 //=============================================================================
143 //=============================================================================
145 istream & operator >>(istream & load, StdMeshers_SegmentLengthAroundVertex & hyp)
147 return hyp.LoadFrom( load );
150 //================================================================================
152 * \brief Initialize segment length by the mesh built on the geometry
153 * \param theMesh - the built mesh
154 * \param theShape - the geometry of interest
155 * \retval bool - true if parameter values have been successfully defined
157 //================================================================================
159 bool StdMeshers_SegmentLengthAroundVertex::SetParametersByMesh(const SMESH_Mesh* theMesh,
160 const TopoDS_Shape& theShape)
162 if ( !theMesh || theShape.IsNull() || theShape.ShapeType() != TopAbs_VERTEX )
165 SMESH_MeshEditor editor( const_cast<SMESH_Mesh*>( theMesh ) );
166 SMESH_MesherHelper helper( *editor.GetMesh() );
168 // get node built on theShape vertex
169 SMESHDS_Mesh* meshDS = editor.GetMeshDS();
170 SMESHDS_SubMesh* smV = meshDS->MeshElements( theShape );
171 if ( !smV || smV->NbNodes() == 0 )
173 const SMDS_MeshNode* vNode = smV->GetNodes()->next();
175 // calculate average length of segments sharing vNode
180 SMDS_ElemIteratorPtr segIt = vNode->GetInverseElementIterator(SMDSAbs_Edge);
181 while ( segIt->more() ) {
182 const SMDS_MeshElement* seg = segIt->next();
184 int shapeID = editor.FindShape( seg );
185 if (!shapeID) continue;
186 const TopoDS_Shape& s = meshDS->IndexToShape( shapeID );
187 if ( s.IsNull() || s.ShapeType() != TopAbs_EDGE ) continue;
188 const TopoDS_Edge& edge = TopoDS::Edge( s );
189 // params of edge ends
190 double u0 = helper.GetNodeU( edge, seg->GetNode(0) );
191 double u1 = helper.GetNodeU( edge, seg->GetNode(1) );
193 BRepAdaptor_Curve AdaptCurve( edge );
194 _length += GCPnts_AbscissaPoint::Length( AdaptCurve, u0, u1);
204 //================================================================================
206 * \brief Initialize my parameter values by default parameters.
207 * \retval bool - true if parameter values have been successfully defined
209 //================================================================================
211 bool StdMeshers_SegmentLengthAroundVertex::SetParametersByDefaults(const TDefaults&,