--- /dev/null
+// SMESH SMESH : implementaion of SMESH idl descriptions
+//
+// Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+//
+//
+// File : StdMeshers_SegmentLengthAroundVertex.cxx
+// Module : SMESH
+// $Header$
+
+#include "StdMeshers_SegmentLengthAroundVertex.hxx"
+
+#include "SMESH_Mesh.hxx"
+#include "SMESH_Algo.hxx"
+#include "SMDS_MeshNode.hxx"
+#include "SMESHDS_Mesh.hxx"
+#include "SMESHDS_SubMesh.hxx"
+#include "SMESH_MeshEditor.hxx"
+#include "SMESH_MesherHelper.hxx"
+
+#include "utilities.h"
+
+#include <BRepAdaptor_Curve.hxx>
+#include <GCPnts_AbscissaPoint.hxx>
+#include <TopTools_IndexedMapOfShape.hxx>
+#include <TopoDS.hxx>
+#include <TopoDS_Edge.hxx>
+
+using namespace std;
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+StdMeshers_SegmentLengthAroundVertex::StdMeshers_SegmentLengthAroundVertex
+ (int hypId, int studyId, SMESH_Gen * gen)
+ :SMESH_Hypothesis(hypId, studyId, gen)
+{
+ _length = 1.;
+ _name = "SegmentLengthAroundVertex";
+ _param_algo_dim = 0; // is used by StdMeshers_SegmentAroundVertex_0D
+}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+StdMeshers_SegmentLengthAroundVertex::~StdMeshers_SegmentLengthAroundVertex()
+{
+}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+void StdMeshers_SegmentLengthAroundVertex::SetLength(double length) throw(SALOME_Exception)
+{
+ if (length <= 0)
+ throw SALOME_Exception(LOCALIZED("length must be positive"));
+ if (_length != length) {
+ _length = length;
+ NotifySubMeshesHypothesisModification();
+ }
+}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+double StdMeshers_SegmentLengthAroundVertex::GetLength() const
+{
+ return _length;
+}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+ostream & StdMeshers_SegmentLengthAroundVertex::SaveTo(ostream & save)
+{
+ save << this->_length;
+ return save;
+}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+istream & StdMeshers_SegmentLengthAroundVertex::LoadFrom(istream & load)
+{
+ bool isOK = true;
+ double a;
+ isOK = (load >> a);
+ if (isOK)
+ this->_length = a;
+ else
+ load.clear(ios::badbit | load.rdstate());
+ return load;
+}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+ostream & operator <<(ostream & save, StdMeshers_SegmentLengthAroundVertex & hyp)
+{
+ return hyp.SaveTo( save );
+}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+istream & operator >>(istream & load, StdMeshers_SegmentLengthAroundVertex & hyp)
+{
+ return hyp.LoadFrom( load );
+}
+
+//================================================================================
+/*!
+ * \brief Initialize segment length by the mesh built on the geometry
+ * \param theMesh - the built mesh
+ * \param theShape - the geometry of interest
+ * \retval bool - true if parameter values have been successfully defined
+ */
+//================================================================================
+
+bool StdMeshers_SegmentLengthAroundVertex::SetParametersByMesh(const SMESH_Mesh* theMesh,
+ const TopoDS_Shape& theShape)
+{
+ if ( !theMesh || theShape.IsNull() || theShape.ShapeType() != TopAbs_VERTEX )
+ return false;
+
+ SMESH_MeshEditor editor( const_cast<SMESH_Mesh*>( theMesh ) );
+ SMESH_MesherHelper helper( *editor.GetMesh() );
+
+ // get node built on theShape vertex
+ SMESHDS_Mesh* meshDS = editor.GetMeshDS();
+ SMESHDS_SubMesh* smV = meshDS->MeshElements( theShape );
+ if ( !smV || smV->NbNodes() == 0 )
+ return false;
+ const SMDS_MeshNode* vNode = smV->GetNodes()->next();
+
+ // calculate average length of segments sharing vNode
+
+ _length = 0.;
+ int nbSegs = 0;
+
+ SMDS_ElemIteratorPtr segIt = vNode->GetInverseElementIterator(SMDSAbs_Edge);
+ while ( segIt->more() ) {
+ const SMDS_MeshElement* seg = segIt->next();
+ // get geom edge
+ int shapeID = editor.FindShape( seg );
+ if (!shapeID) continue;
+ const TopoDS_Shape& s = meshDS->IndexToShape( shapeID );
+ if ( s.IsNull() || s.ShapeType() != TopAbs_EDGE ) continue;
+ const TopoDS_Edge& edge = TopoDS::Edge( s );
+ // params of edge ends
+ double u0 = helper.GetNodeU( edge, seg->GetNode(0) );
+ double u1 = helper.GetNodeU( edge, seg->GetNode(1) );
+ // length
+ BRepAdaptor_Curve AdaptCurve( edge );
+ _length += GCPnts_AbscissaPoint::Length( AdaptCurve, u0, u1);
+ nbSegs++;
+ }
+
+ if ( nbSegs > 1 )
+ _length /= nbSegs;
+
+ return nbSegs;
+}
