smesh/src/StdMeshers/StdMeshers_Deflection1D.cxx
2020-04-15 18:19:44 +03:00

236 lines
7.0 KiB
C++

// Copyright (C) 2007-2020 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 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, or (at your option) any later version.
//
// 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
//
// SMESH StdMeshers_Deflection1D : implementation of SMESH idl descriptions
// File : StdMeshers_Deflection1D.cxx
// Module : SMESH
//
#include "StdMeshers_Deflection1D.hxx"
#include "utilities.h"
#include "SMESH_Mesh.hxx"
#include "SMESH_Algo.hxx"
#include <BRep_Tool.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 <gp_Lin.hxx>
#include <gp_Pnt.hxx>
using namespace std;
//=============================================================================
/*!
*
*/
//=============================================================================
StdMeshers_Deflection1D::StdMeshers_Deflection1D(int hypId,
SMESH_Gen * gen)
:SMESH_Hypothesis(hypId, gen)
{
_value = 1.;
_name = "Deflection1D";
_param_algo_dim = 1; // is used by SMESH_Regular_1D
}
//=============================================================================
/*!
*
*/
//=============================================================================
StdMeshers_Deflection1D::~StdMeshers_Deflection1D()
{
}
//=============================================================================
/*!
*
*/
//=============================================================================
void StdMeshers_Deflection1D::SetDeflection(double value)
throw(SALOME_Exception)
{
if (_value != value) {
if (value <= 0.)
throw SALOME_Exception(LOCALIZED("Value must be positive"));
NotifySubMeshesHypothesisModification();
_value = value;
}
}
//=============================================================================
/*!
*
*/
//=============================================================================
double StdMeshers_Deflection1D::GetDeflection() const
{
return _value;
}
//=============================================================================
/*!
*
*/
//=============================================================================
ostream & StdMeshers_Deflection1D::SaveTo(ostream & save)
{
save << _value;
return save;
}
//=============================================================================
/*!
*
*/
//=============================================================================
istream & StdMeshers_Deflection1D::LoadFrom(istream & load)
{
bool isOK = static_cast<bool>(load >> _value);
if (!isOK)
load.clear(ios::badbit | load.rdstate());
return load;
}
//=============================================================================
/*!
*
*/
//=============================================================================
ostream & operator <<(ostream & save, StdMeshers_Deflection1D & hyp)
{
return hyp.SaveTo( save );
}
//=============================================================================
/*!
*
*/
//=============================================================================
istream & operator >>(istream & load, StdMeshers_Deflection1D & hyp)
{
return hyp.LoadFrom( load );
}
//================================================================================
/*!
* \brief Evaluate curve deflection between two points
* \param theCurve - the curve
* \param theU1 - the parameter of the first point
* \param theU2 - the parameter of the second point
* \retval double - deflection value
*/
//================================================================================
static double deflection(const GeomAdaptor_Curve & theCurve,
double theU1,
double theU2)
{
if ( theCurve.GetType() == GeomAbs_Line )
return 0;
// line between theU1 and theU2
gp_Pnt p1 = theCurve.Value( theU1 ), p2 = theCurve.Value( theU2 );
gp_Lin segment( p1, gp_Vec( p1, p2 ));
// evaluate square distance of theCurve from the segment
Standard_Real dist2 = 0;
const int nbPnt = 7;
const double step = ( theU2 - theU1 ) / nbPnt;
while (( theU1 += step ) < theU2 )
dist2 = Max( dist2, segment.SquareDistance( theCurve.Value( theU1 )));
return sqrt( dist2 );
}
//================================================================================
/*!
* \brief Initialize deflection value 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_Deflection1D::SetParametersByMesh(const SMESH_Mesh* theMesh,
const TopoDS_Shape& theShape)
{
if ( !theMesh || theShape.IsNull() )
return false;
_value = 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, UMin, UMax);
if ( AdaptCurve.GetType() != GeomAbs_Line )
{
vector< double > params;
SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* >( theMesh )->GetMeshDS();
if ( SMESH_Algo::GetNodeParamOnEdge( aMeshDS, edge, params ))
{
nbEdges++;
for ( size_t i = 1; i < params.size(); ++i )
_value = Max( _value, deflection( AdaptCurve, params[ i-1 ], params[ i ]));
}
}
else
nbEdges++;
}
return nbEdges;
}
//================================================================================
/*!
* \brief Initialize my parameter values by default parameters.
* \retval bool - true if parameter values have been successfully defined
*/
//================================================================================
bool StdMeshers_Deflection1D::SetParametersByDefaults(const TDefaults& /*dflts*/,
const SMESH_Mesh* /*theMesh*/)
{
return false;
}