/
StdMeshers_NumberOfSegments.cpp
698 lines (616 loc) · 19.4 KB
/
StdMeshers_NumberOfSegments.cpp
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// Copyright (C) 2007-2008 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.
//
// 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 SMESH : implementaion of SMESH idl descriptions
// File : StdMeshers_NumberOfSegments.cxx
// Moved here from SMESH_NumberOfSegments.cxx
// Author : Paul RASCLE, EDF
// Module : SMESH
// $Header: /home/server/cvs/SMESH/SMESH_SRC/src/StdMeshers/StdMeshers_NumberOfSegments.cxx,v 1.13.2.1 2008/11/27 13:03:49 abd Exp $
//
#include "StdMeshers_NumberOfSegments.hxx"
#include "StdMeshers_Distribution.hxx"
#include "SMESHDS_SubMesh.hxx"
#include "SMESH_Mesh.hxx"
#include <ExprIntrp_GenExp.hxx>
#include <Expr_Array1OfNamedUnknown.hxx>
#include <Expr_NamedUnknown.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TCollection_AsciiString.hxx>
#include <TopExp.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
#define NO_CAS_CATCH
#endif
#include <Standard_Failure.hxx>
#ifdef NO_CAS_CATCH
#include <Standard_ErrorHandler.hxx>
#endif
using namespace std;
const double PRECISION = 1e-7;
//=============================================================================
/*!
*
*/
//=============================================================================
StdMeshers_NumberOfSegments::StdMeshers_NumberOfSegments(int hypId,
int studyId,
SMESH_Gen * gen)
: SMESH_Hypothesis(hypId, studyId, gen),
_numberOfSegments(15),//issue 19923
_distrType(DT_Regular),
_scaleFactor(1.),
_convMode(1) //cut negative by default
{
_name = "NumberOfSegments";
_param_algo_dim = 1;
}
//=============================================================================
/*!
*
*/
//=============================================================================
StdMeshers_NumberOfSegments::~StdMeshers_NumberOfSegments()
{
}
//=============================================================================
/*!
*
*/
//=============================================================================
const vector<double>&
StdMeshers_NumberOfSegments::BuildDistributionExpr( const char* expr,int nbSeg,int conv )
throw ( SMESH_Exception )
{
if( !buildDistribution( TCollection_AsciiString( ( Standard_CString )expr ), conv, 0.0, 1.0, nbSeg, _distr, 1E-4 ) )
_distr.resize( 0 );
return _distr;
}
const vector<double>&
StdMeshers_NumberOfSegments::BuildDistributionTab( const vector<double>& tab,
int nbSeg,
int conv )
throw ( SMESH_Exception )
{
if( !buildDistribution( tab, conv, 0.0, 1.0, nbSeg, _distr, 1E-4 ) )
_distr.resize( 0 );
return _distr;
}
//=============================================================================
/*!
*
*/
//=============================================================================
void StdMeshers_NumberOfSegments::SetNumberOfSegments(int segmentsNumber)
throw(SMESH_Exception)
{
int oldNumberOfSegments = _numberOfSegments;
if (segmentsNumber <= 0)
throw SMESH_Exception(LOCALIZED("number of segments must be positive"));
_numberOfSegments = segmentsNumber;
if (oldNumberOfSegments != _numberOfSegments)
NotifySubMeshesHypothesisModification();
}
//=============================================================================
/*!
*
*/
//=============================================================================
int StdMeshers_NumberOfSegments::GetNumberOfSegments() const
{
return _numberOfSegments;
}
//================================================================================
/*!
*
*/
//================================================================================
void StdMeshers_NumberOfSegments::SetDistrType(DistrType typ)
throw(SMESH_Exception)
{
if (typ < DT_Regular || typ > DT_ExprFunc)
throw SMESH_Exception(LOCALIZED("distribution type is out of range"));
if (typ != _distrType)
{
_distrType = typ;
NotifySubMeshesHypothesisModification();
}
}
//================================================================================
/*!
*
*/
//================================================================================
StdMeshers_NumberOfSegments::DistrType StdMeshers_NumberOfSegments::GetDistrType() const
{
return _distrType;
}
//================================================================================
/*!
*
*/
//================================================================================
void StdMeshers_NumberOfSegments::SetScaleFactor(double scaleFactor)
throw(SMESH_Exception)
{
if (_distrType != DT_Scale)
_distrType = DT_Scale;
//throw SMESH_Exception(LOCALIZED("not a scale distribution"));
if (scaleFactor < PRECISION)
throw SMESH_Exception(LOCALIZED("scale factor must be positive"));
//if (fabs(scaleFactor - 1.0) < PRECISION)
// throw SMESH_Exception(LOCALIZED("scale factor must not be equal to 1"));
if (fabs(_scaleFactor - scaleFactor) > PRECISION)
{
_scaleFactor = scaleFactor;
NotifySubMeshesHypothesisModification();
}
}
//================================================================================
/*!
*
*/
//================================================================================
double StdMeshers_NumberOfSegments::GetScaleFactor() const
throw(SMESH_Exception)
{
if (_distrType != DT_Scale)
throw SMESH_Exception(LOCALIZED("not a scale distribution"));
return _scaleFactor;
}
//================================================================================
/*!
*
*/
//================================================================================
void StdMeshers_NumberOfSegments::SetTableFunction(const vector<double>& table)
throw(SMESH_Exception)
{
if (_distrType != DT_TabFunc)
_distrType = DT_TabFunc;
//throw SMESH_Exception(LOCALIZED("not a table function distribution"));
if ( (table.size() % 2) != 0 )
throw SMESH_Exception(LOCALIZED("odd size of vector of table function"));
int i;
double prev = -PRECISION;
bool isSame = table.size() == _table.size();
bool pos = false;
for (i=0; i < table.size()/2; i++) {
double par = table[i*2];
double val = table[i*2+1];
if( _convMode==0 )
{
try {
#ifdef NO_CAS_CATCH
OCC_CATCH_SIGNALS;
#endif
val = pow( 10.0, val );
} catch(Standard_Failure) {
Handle(Standard_Failure) aFail = Standard_Failure::Caught();
throw SMESH_Exception( LOCALIZED( "invalid value"));
return;
}
}
else if( _convMode==1 && val<0.0 )
val = 0.0;
if ( par<0 || par > 1)
throw SMESH_Exception(LOCALIZED("parameter of table function is out of range [0,1]"));
if ( fabs(par-prev)<PRECISION )
throw SMESH_Exception(LOCALIZED("two parameters are the same"));
if ( val < 0 )
throw SMESH_Exception(LOCALIZED("value of table function is not positive"));
if( val>PRECISION )
pos = true;
if (isSame)
{
double oldpar = _table[i*2];
double oldval = _table[i*2+1];
if (fabs(par - oldpar) > PRECISION || fabs(val - oldval) > PRECISION)
isSame = false;
}
prev = par;
}
if( !pos )
throw SMESH_Exception(LOCALIZED("value of table function is not positive"));
if( pos && !isSame )
{
_table = table;
NotifySubMeshesHypothesisModification();
}
}
//================================================================================
/*!
*
*/
//================================================================================
const vector<double>& StdMeshers_NumberOfSegments::GetTableFunction() const
throw(SMESH_Exception)
{
if (_distrType != DT_TabFunc)
throw SMESH_Exception(LOCALIZED("not a table function distribution"));
return _table;
}
//================================================================================
/*! check if only 't' is unknown variable in expression
*/
//================================================================================
bool isCorrectArg( const Handle( Expr_GeneralExpression )& expr )
{
Handle( Expr_NamedUnknown ) sub = Handle( Expr_NamedUnknown )::DownCast( expr );
if( !sub.IsNull() )
return sub->GetName()=="t";
bool res = true;
for( int i=1, n=expr->NbSubExpressions(); i<=n && res; i++ )
{
Handle( Expr_GeneralExpression ) sub = expr->SubExpression( i );
Handle( Expr_NamedUnknown ) name = Handle( Expr_NamedUnknown )::DownCast( sub );
if( !name.IsNull() )
{
if( name->GetName()!="t" )
res = false;
}
else
res = isCorrectArg( sub );
}
return res;
}
//================================================================================
/*! this function parses the expression 'str' in order to check if syntax is correct
* ( result in 'syntax' ) and if only 't' is unknown variable in expression ( result in 'args' )
*/
//================================================================================
bool process( const TCollection_AsciiString& str, int convMode,
bool& syntax, bool& args,
bool& non_neg, bool& non_zero,
bool& singulars, double& sing_point )
{
bool parsed_ok = true;
Handle( ExprIntrp_GenExp ) myExpr;
try {
#ifdef NO_CAS_CATCH
OCC_CATCH_SIGNALS;
#endif
myExpr = ExprIntrp_GenExp::Create();
myExpr->Process( str.ToCString() );
} catch(Standard_Failure) {
Handle(Standard_Failure) aFail = Standard_Failure::Caught();
parsed_ok = false;
}
syntax = false;
args = false;
if( parsed_ok && myExpr->IsDone() )
{
syntax = true;
args = isCorrectArg( myExpr->Expression() );
}
bool res = parsed_ok && syntax && args;
if( !res )
myExpr.Nullify();
non_neg = true;
singulars = false;
non_zero = false;
if( res )
{
FunctionExpr f( str.ToCString(), convMode );
const int max = 500;
for( int i=0; i<=max; i++ )
{
double t = double(i)/double(max), val;
if( !f.value( t, val ) )
{
sing_point = t;
singulars = true;
break;
}
if( val<0 )
{
non_neg = false;
break;
}
if( val>PRECISION )
non_zero = true;
}
}
return res && non_neg && non_zero && ( !singulars );
}
//================================================================================
/*!
*
*/
//================================================================================
void StdMeshers_NumberOfSegments::SetExpressionFunction(const char* expr)
throw(SMESH_Exception)
{
if (_distrType != DT_ExprFunc)
_distrType = DT_ExprFunc;
//throw SMESH_Exception(LOCALIZED("not an expression function distribution"));
// remove white spaces
TCollection_AsciiString str((Standard_CString)expr);
str.RemoveAll(' ');
str.RemoveAll('\t');
str.RemoveAll('\r');
str.RemoveAll('\n');
bool syntax, args, non_neg, singulars, non_zero;
double sing_point;
bool res = process( str, _convMode, syntax, args, non_neg, non_zero, singulars, sing_point );
if( !res )
{
if( !syntax )
throw SMESH_Exception(LOCALIZED("invalid expression syntax"));
if( !args )
throw SMESH_Exception(LOCALIZED("only 't' may be used as function argument"));
if( !non_neg )
throw SMESH_Exception(LOCALIZED("only non-negative function can be used as density"));
if( singulars )
{
char buf[1024];
sprintf( buf, "Function has singular point in %.3f", sing_point );
throw SMESH_Exception( buf );
}
if( !non_zero )
throw SMESH_Exception(LOCALIZED("f(t)=0 cannot be used as density"));
return;
}
string func = expr;
if( _func != func )
{
_func = func;
NotifySubMeshesHypothesisModification();
}
}
//================================================================================
/*!
*
*/
//================================================================================
const char* StdMeshers_NumberOfSegments::GetExpressionFunction() const
throw(SMESH_Exception)
{
if (_distrType != DT_ExprFunc)
throw SMESH_Exception(LOCALIZED("not an expression function distribution"));
return _func.c_str();
}
//================================================================================
/*!
*
*/
//================================================================================
void StdMeshers_NumberOfSegments::SetConversionMode( int conv )
throw(SMESH_Exception)
{
// if (_distrType != DT_TabFunc && _distrType != DT_ExprFunc)
// throw SMESH_Exception(LOCALIZED("not a functional distribution"));
if( conv != _convMode )
{
_convMode = conv;
NotifySubMeshesHypothesisModification();
}
}
//================================================================================
/*!
*
*/
//================================================================================
int StdMeshers_NumberOfSegments::ConversionMode() const
throw(SMESH_Exception)
{
// if (_distrType != DT_TabFunc && _distrType != DT_ExprFunc)
// throw SMESH_Exception(LOCALIZED("not a functional distribution"));
return _convMode;
}
//=============================================================================
/*!
*
*/
//=============================================================================
ostream & StdMeshers_NumberOfSegments::SaveTo(ostream & save)
{
save << _numberOfSegments << " " << (int)_distrType;
switch (_distrType)
{
case DT_Scale:
save << " " << _scaleFactor;
break;
case DT_TabFunc:
int i;
save << " " << _table.size();
for (i=0; i < _table.size(); i++)
save << " " << _table[i];
break;
case DT_ExprFunc:
save << " " << _func;
break;
case DT_Regular:
default:
break;
}
if (_distrType == DT_TabFunc || _distrType == DT_ExprFunc)
save << " " << _convMode;
return save;
}
//=============================================================================
/*!
*
*/
//=============================================================================
istream & StdMeshers_NumberOfSegments::LoadFrom(istream & load)
{
bool isOK = true;
int a;
// read number of segments
isOK = !(load >> a).bad();
if (isOK)
_numberOfSegments = a;
else
load.clear(ios::badbit | load.rdstate());
// read second stored value. It can be two variants here:
// 1. If the hypothesis is stored in old format (nb.segments and scale factor),
// we wait here the scale factor, which is double.
// 2. If the hypothesis is stored in new format
// (nb.segments, distr.type, some other params.),
// we wait here the ditribution type, which is integer
double scale_factor;
isOK = !(load >> scale_factor).bad();
a = (int)scale_factor;
// try to interprete ditribution type,
// supposing that this hypothesis was written in the new format
if (isOK)
{
if (a < DT_Regular || a > DT_ExprFunc)
_distrType = DT_Regular;
else
_distrType = (DistrType) a;
}
else
load.clear(ios::badbit | load.rdstate());
// parameters of distribution
double b;
switch (_distrType)
{
case DT_Scale:
{
isOK = !(load >> b).bad();
if (isOK)
_scaleFactor = b;
else
{
load.clear(ios::badbit | load.rdstate());
// this can mean, that the hypothesis is stored in old format
_distrType = DT_Regular;
_scaleFactor = scale_factor;
}
}
break;
case DT_TabFunc:
{
isOK = !(load >> a).bad();
if (isOK)
{
_table.resize(a, 0.);
int i;
for (i=0; i < _table.size(); i++)
{
isOK = !(load >> b).bad();
if (isOK)
_table[i] = b;
else
load.clear(ios::badbit | load.rdstate());
}
}
else
{
load.clear(ios::badbit | load.rdstate());
// this can mean, that the hypothesis is stored in old format
_distrType = DT_Regular;
_scaleFactor = scale_factor;
}
}
break;
case DT_ExprFunc:
{
string str;
isOK = !(load >> str).bad();
if (isOK)
_func = str;
else
{
load.clear(ios::badbit | load.rdstate());
// this can mean, that the hypothesis is stored in old format
_distrType = DT_Regular;
_scaleFactor = scale_factor;
}
}
break;
case DT_Regular:
default:
break;
}
if (_distrType == DT_TabFunc || _distrType == DT_ExprFunc)
{
isOK = !(load >> a).bad();
if (isOK)
_convMode = a;
else
load.clear(ios::badbit | load.rdstate());
}
return load;
}
//=============================================================================
/*!
*
*/
//=============================================================================
ostream & operator <<(ostream & save, StdMeshers_NumberOfSegments & hyp)
{
return hyp.SaveTo( save );
}
//=============================================================================
/*!
*
*/
//=============================================================================
istream & operator >>(istream & load, StdMeshers_NumberOfSegments & hyp)
{
return hyp.LoadFrom( load );
}
//================================================================================
/*!
* \brief Initialize number of segments 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_NumberOfSegments::SetParametersByMesh(const SMESH_Mesh* theMesh,
const TopoDS_Shape& theShape)
{
if ( !theMesh || theShape.IsNull() )
return false;
_numberOfSegments = 0;
_distrType = DT_Regular;
int nbEdges = 0;
TopTools_IndexedMapOfShape edgeMap;
TopExp::MapShapes( theShape, TopAbs_EDGE, edgeMap );
SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* >( theMesh )->GetMeshDS();
for ( int i = 1; i <= edgeMap.Extent(); ++i )
{
// get current segment length
SMESHDS_SubMesh * eSubMesh = aMeshDS->MeshElements( edgeMap( i ));
if ( eSubMesh && eSubMesh->NbElements())
_numberOfSegments += eSubMesh->NbElements();
++nbEdges;
}
if ( nbEdges )
_numberOfSegments /= nbEdges;
if (_numberOfSegments == 0) _numberOfSegments = 1;
return nbEdges;
}
//================================================================================
/*!
* \brief Initialize my parameter values by default parameters.
* \retval bool - true if parameter values have been successfully defined
*/
//================================================================================
bool StdMeshers_NumberOfSegments::SetParametersByDefaults(const TDefaults& dflts,
const SMESH_Mesh* /*theMesh*/)
{
return (_numberOfSegments = dflts._nbSegments );
}