smesh/src/StdMeshers/StdMeshers_Arithmetic1D.cxx

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// 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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
//
//
//
// File : StdMeshers_Arithmetic1D.cxx
// Author : Damien COQUERET, OCC
// Module : SMESH
// $Header$
#include "StdMeshers_Arithmetic1D.hxx"
#include "SMESH_Algo.hxx"
#include "SMESH_Mesh.hxx"
#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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//=============================================================================
/*!
*
*/
//=============================================================================
StdMeshers_Arithmetic1D::StdMeshers_Arithmetic1D(int hypId, int studyId, SMESH_Gen * gen)
:SMESH_Hypothesis(hypId, studyId, gen)
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{
_begLength = 1.;
_endLength = 10.;
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_name = "Arithmetic1D";
_param_algo_dim = 1;
}
//=============================================================================
/*!
*
*/
//=============================================================================
StdMeshers_Arithmetic1D::~StdMeshers_Arithmetic1D()
{
}
//=============================================================================
/*!
*
*/
//=============================================================================
void StdMeshers_Arithmetic1D::SetLength(double length, bool isStartLength)
throw(SALOME_Exception)
{
if ( (isStartLength ? _begLength : _endLength) != length ) {
if (length <= 0)
throw SALOME_Exception(LOCALIZED("length must be positive"));
if ( isStartLength )
_begLength = length;
else
_endLength = length;
NotifySubMeshesHypothesisModification();
}
}
//=============================================================================
/*!
*
*/
//=============================================================================
double StdMeshers_Arithmetic1D::GetLength(bool isStartLength) const
{
return isStartLength ? _begLength : _endLength;
}
//=============================================================================
/*!
*
*/
//=============================================================================
ostream & StdMeshers_Arithmetic1D::SaveTo(ostream & save)
{
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save << _begLength << " " << _endLength;
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return save;
}
//=============================================================================
/*!
*
*/
//=============================================================================
istream & StdMeshers_Arithmetic1D::LoadFrom(istream & load)
{
bool isOK = true;
isOK = (load >> _begLength);
if (!isOK)
load.clear(ios::badbit | load.rdstate());
isOK = (load >> _endLength);
if (!isOK)
load.clear(ios::badbit | load.rdstate());
return load;
}
//=============================================================================
/*!
*
*/
//=============================================================================
ostream & operator <<(ostream & save, StdMeshers_Arithmetic1D & hyp)
{
return hyp.SaveTo( save );
}
//=============================================================================
/*!
*
*/
//=============================================================================
istream & operator >>(istream & load, StdMeshers_Arithmetic1D & hyp)
{
return hyp.LoadFrom( load );
}
//================================================================================
/*!
* \brief Initialize start and end 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_Arithmetic1D::SetParametersByMesh(const SMESH_Mesh* theMesh,
const TopoDS_Shape& theShape)
{
if ( !theMesh || theShape.IsNull() )
return false;
_begLength = _endLength = 0.;
Standard_Real UMin, UMax;
TopLoc_Location L;
int nbEdges = 0;
TopTools_IndexedMapOfShape edgeMap;
TopExp::MapShapes( theShape, TopAbs_EDGE, edgeMap );
for ( int i = 1; i <= edgeMap.Extent(); ++i )
{
const TopoDS_Edge& edge = TopoDS::Edge( edgeMap( i ));
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 ))
{
nbEdges++;
_begLength += GCPnts_AbscissaPoint::Length( AdaptCurve, params[0], params[1]);
int nb = params.size();
_endLength += GCPnts_AbscissaPoint::Length( AdaptCurve, params[nb-2], params[nb-1]);
}
}
if ( nbEdges ) {
_begLength /= nbEdges;
_endLength /= nbEdges;
}
return nbEdges;
}