1 // Copyright (C) 2007-2008 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
22 // SMESH SMESH : implementaion of SMESH idl descriptions
23 // File : StdMeshers_SegmentLengthAroundVertex.cxx
26 #include "StdMeshers_SegmentLengthAroundVertex.hxx"
28 #include "SMESH_Mesh.hxx"
29 #include "SMESH_Algo.hxx"
30 #include "SMDS_MeshNode.hxx"
31 #include "SMESHDS_Mesh.hxx"
32 #include "SMESHDS_SubMesh.hxx"
33 #include "SMESH_MesherHelper.hxx"
35 #include "utilities.h"
37 #include <BRepAdaptor_Curve.hxx>
38 #include <GCPnts_AbscissaPoint.hxx>
39 #include <TopTools_IndexedMapOfShape.hxx>
41 #include <TopoDS_Edge.hxx>
45 //=============================================================================
49 //=============================================================================
51 StdMeshers_SegmentLengthAroundVertex::StdMeshers_SegmentLengthAroundVertex
52 (int hypId, int studyId, SMESH_Gen * gen)
53 :SMESH_Hypothesis(hypId, studyId, gen)
56 _name = "SegmentLengthAroundVertex";
57 _param_algo_dim = 0; // is used by StdMeshers_SegmentAroundVertex_0D
60 //=============================================================================
64 //=============================================================================
66 StdMeshers_SegmentLengthAroundVertex::~StdMeshers_SegmentLengthAroundVertex()
70 //=============================================================================
74 //=============================================================================
76 void StdMeshers_SegmentLengthAroundVertex::SetLength(double length) throw(SALOME_Exception)
79 throw SALOME_Exception(LOCALIZED("length must be positive"));
80 if (_length != length) {
82 NotifySubMeshesHypothesisModification();
86 //=============================================================================
90 //=============================================================================
92 double StdMeshers_SegmentLengthAroundVertex::GetLength() const
97 //=============================================================================
101 //=============================================================================
103 ostream & StdMeshers_SegmentLengthAroundVertex::SaveTo(ostream & save)
105 save << this->_length;
109 //=============================================================================
113 //=============================================================================
115 istream & StdMeshers_SegmentLengthAroundVertex::LoadFrom(istream & load)
123 load.clear(ios::badbit | load.rdstate());
127 //=============================================================================
131 //=============================================================================
133 ostream & operator <<(ostream & save, StdMeshers_SegmentLengthAroundVertex & hyp)
135 return hyp.SaveTo( save );
138 //=============================================================================
142 //=============================================================================
144 istream & operator >>(istream & load, StdMeshers_SegmentLengthAroundVertex & hyp)
146 return hyp.LoadFrom( load );
149 //================================================================================
151 * \brief Initialize segment length by the mesh built on the geometry
152 * \param theMesh - the built mesh
153 * \param theShape - the geometry of interest
154 * \retval bool - true if parameter values have been successfully defined
156 //================================================================================
158 bool StdMeshers_SegmentLengthAroundVertex::SetParametersByMesh(const SMESH_Mesh* theMesh,
159 const TopoDS_Shape& theShape)
161 if ( !theMesh || theShape.IsNull() || theShape.ShapeType() != TopAbs_VERTEX )
164 SMESH_MeshEditor editor( const_cast<SMESH_Mesh*>( theMesh ) );
165 SMESH_MesherHelper helper( *editor.GetMesh() );
167 // get node built on theShape vertex
168 SMESHDS_Mesh* meshDS = editor.GetMeshDS();
169 SMESHDS_SubMesh* smV = meshDS->MeshElements( theShape );
170 if ( !smV || smV->NbNodes() == 0 )
172 const SMDS_MeshNode* vNode = smV->GetNodes()->next();
174 // calculate average length of segments sharing vNode
179 SMDS_ElemIteratorPtr segIt = vNode->GetInverseElementIterator(SMDSAbs_Edge);
180 while ( segIt->more() ) {
181 const SMDS_MeshElement* seg = segIt->next();
183 int shapeID = editor.FindShape( seg );
184 if (!shapeID) continue;
185 const TopoDS_Shape& s = meshDS->IndexToShape( shapeID );
186 if ( s.IsNull() || s.ShapeType() != TopAbs_EDGE ) continue;
187 const TopoDS_Edge& edge = TopoDS::Edge( s );
188 // params of edge ends
189 double u0 = helper.GetNodeU( edge, seg->GetNode(0) );
190 double u1 = helper.GetNodeU( edge, seg->GetNode(1) );
192 BRepAdaptor_Curve AdaptCurve( edge );
193 _length += GCPnts_AbscissaPoint::Length( AdaptCurve, u0, u1);
203 //================================================================================
205 * \brief Initialize my parameter values by default parameters.
206 * \retval bool - true if parameter values have been successfully defined
208 //================================================================================
210 bool StdMeshers_SegmentLengthAroundVertex::SetParametersByDefaults(const TDefaults&,