smesh/src/StdMeshers/StdMeshers_LocalLength.cxx

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// SMESH SMESH : implementaion of SMESH idl descriptions
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//
// 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
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//
//
//
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// File : StdMeshers_LocalLength.cxx
// Moved here from SMESH_LocalLength.cxx
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// Author : Paul RASCLE, EDF
// Module : SMESH
// $Header$
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#include "StdMeshers_LocalLength.hxx"
#include "SMESH_Mesh.hxx"
#include "SMESH_Algo.hxx"
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#include "utilities.h"
#include <BRep_Tool.hxx>
#include <GCPnts_AbscissaPoint.hxx>
#include <GeomAdaptor_Curve.hxx>
#include <Geom_Curve.hxx>
#include <TopExp.hxx>
#include <TopLoc_Location.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
using namespace std;
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//=============================================================================
/*!
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*
*/
//=============================================================================
StdMeshers_LocalLength::StdMeshers_LocalLength(int hypId, int studyId, SMESH_Gen * gen)
:SMESH_Hypothesis(hypId, studyId, gen)
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{
_length = 1.;
_name = "LocalLength";
_param_algo_dim = 1; // is used by SMESH_Regular_1D
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}
//=============================================================================
/*!
*
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*/
//=============================================================================
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StdMeshers_LocalLength::~StdMeshers_LocalLength()
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{
}
//=============================================================================
/*!
*
*/
//=============================================================================
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void StdMeshers_LocalLength::SetLength(double length) throw(SALOME_Exception)
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{
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double oldLength = _length;
if (length <= 0)
throw SALOME_Exception(LOCALIZED("length must be positive"));
_length = length;
if (oldLength != _length)
NotifySubMeshesHypothesisModification();
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}
//=============================================================================
/*!
*
*/
//=============================================================================
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double StdMeshers_LocalLength::GetLength() const
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{
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return _length;
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}
//=============================================================================
/*!
*
*/
//=============================================================================
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ostream & StdMeshers_LocalLength::SaveTo(ostream & save)
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{
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save << this->_length;
return save;
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}
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//=============================================================================
/*!
*
*/
//=============================================================================
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istream & StdMeshers_LocalLength::LoadFrom(istream & load)
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{
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bool isOK = true;
double a;
isOK = (load >> a);
if (isOK)
this->_length = a;
else
load.clear(ios::badbit | load.rdstate());
return load;
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}
//=============================================================================
/*!
*
*/
//=============================================================================
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ostream & operator <<(ostream & save, StdMeshers_LocalLength & hyp)
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{
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return hyp.SaveTo( save );
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}
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//=============================================================================
/*!
*
*/
//=============================================================================
istream & operator >>(istream & load, StdMeshers_LocalLength & 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_LocalLength::SetParametersByMesh(const SMESH_Mesh* theMesh,
const TopoDS_Shape& theShape)
{
if ( !theMesh || theShape.IsNull() )
return false;
_length = 0.;
Standard_Real UMin, UMax;
TopLoc_Location L;
int nbEdges = 0;
TopTools_IndexedMapOfShape edgeMap;
TopExp::MapShapes( theShape, TopAbs_EDGE, edgeMap );
for ( int iE = 1; iE <= edgeMap.Extent(); ++iE )
{
const TopoDS_Edge& edge = TopoDS::Edge( edgeMap( iE ));
Handle(Geom_Curve) C = BRep_Tool::Curve( edge, L, UMin, UMax );
GeomAdaptor_Curve AdaptCurve(C);
vector< double > params;
SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* >( theMesh )->GetMeshDS();
if ( SMESH_Algo::GetNodeParamOnEdge( aMeshDS, edge, params ))
{
for ( int i = 1; i < params.size(); ++i )
_length += GCPnts_AbscissaPoint::Length( AdaptCurve, params[ i-1 ], params[ i ]);
nbEdges += params.size() - 1;
}
}
if ( nbEdges )
_length /= nbEdges;
return nbEdges;
}