smesh/src/StdMeshers/StdMeshers_MaxLength.cxx

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// Copyright (C) 2007-2013 CEA/DEN, EDF R&D, OPEN CASCADE
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//
// 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
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//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
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// SMESH SMESH : implementaion of SMESH idl descriptions
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// File : StdMeshers_MaxLength.cxx
// Module : SMESH
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//
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#include "StdMeshers_MaxLength.hxx"
#include "SMESH_Mesh.hxx"
#include "SMESH_Algo.hxx"
#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>
#include <Precision.hxx>
using namespace std;
//=============================================================================
/*!
*
*/
//=============================================================================
StdMeshers_MaxLength::StdMeshers_MaxLength(int hypId, int studyId, SMESH_Gen * gen)
:SMESH_Hypothesis(hypId, studyId, gen)
{
_length = 1.;
_preestimated = 0.;
_preestimation = false;
_name = "MaxLength";
_param_algo_dim = 1; // is used by SMESH_Regular_1D
}
//=============================================================================
/*!
*
*/
//=============================================================================
StdMeshers_MaxLength::~StdMeshers_MaxLength()
{
}
//=============================================================================
/*!
*
*/
//=============================================================================
void StdMeshers_MaxLength::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_MaxLength::GetLength() const
{
return ( _preestimation && _preestimated > 0. ) ? _preestimated : _length;
}
//================================================================================
/*!
* \brief Sets boolean parameter enabling/desabling usage of length computed
* basing on size of bounding box of shape to mesh
*/
//================================================================================
void StdMeshers_MaxLength::SetUsePreestimatedLength(bool toUse)
{
if ( toUse != _preestimation )
{
_preestimation = toUse;
// this parameter is just to help the user
//NotifySubMeshesHypothesisModification();
}
}
//================================================================================
/*!
* \brief Store preestemated length
*/
//================================================================================
void StdMeshers_MaxLength::SetPreestimatedLength(double length)
{
if ( length > 0 )
_preestimated = length;
}
//================================================================================
/*!
* \brief Returns value of boolean parameter enabling/desabling usage of length computed
* basing on size of bounding box of shape to mesh
*/
//================================================================================
bool StdMeshers_MaxLength::GetUsePreestimatedLength() const
{
return _preestimation;
}
//=============================================================================
/*!
*
*/
//=============================================================================
ostream & StdMeshers_MaxLength::SaveTo(ostream & save)
{
save << _length << " " << _preestimated << " " << _preestimation;
return save;
}
//=============================================================================
/*!
*
*/
//=============================================================================
istream & StdMeshers_MaxLength::LoadFrom(istream & load)
{
bool isOK = true;
double a;
isOK = (load >> a);
if (isOK)
_length = a;
else
load.clear(ios::badbit | load.rdstate());
isOK = (load >> a);
if (isOK)
_preestimated = a;
else
load.clear(ios::badbit | load.rdstate());
bool pre;
isOK = (load >> pre);
if ( isOK )
_preestimation = pre;
else
load.clear(ios::badbit | load.rdstate());
return 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_MaxLength::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 );
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GeomAdaptor_Curve AdaptCurve(C, UMin, UMax);
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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;
}
//================================================================================
/*!
* \brief Initialize my parameter values by default parameters.
* \retval bool - true if parameter values have been successfully defined
*/
//================================================================================
bool StdMeshers_MaxLength::SetParametersByDefaults(const TDefaults& dflts,
const SMESH_Mesh* /*theMesh*/)
{
//_preestimation = ( dflts._elemLength > 0.);
if ( dflts._elemLength > 0. )
_preestimated = dflts._elemLength;
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return ( _length = dflts._elemLength );
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}