1 // Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
22 // File : StdMeshersGUI_DistrPreview.cxx
23 // Author : Open CASCADE S.A.S.
26 #include "StdMeshersGUI_DistrPreview.h"
29 #include <qwt_plot_curve.h>
30 #include <qwt_plot_marker.h>
31 #include <qwt_plot_grid.h>
32 #include <qwt_symbol.h>
33 #include <qwt_legend.h>
36 #include <Expr_NamedUnknown.hxx>
37 #include <Expr_GeneralExpression.hxx>
39 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
43 #include <Standard_Failure.hxx>
46 #include <Standard_ErrorHandler.hxx>
53 StdMeshersGUI_DistrPreview::StdMeshersGUI_DistrPreview( QWidget* p, StdMeshers::StdMeshers_NumberOfSegments_ptr h )
59 myConv( CUT_NEGATIVE ),
63 myHypo = StdMeshers::StdMeshers_NumberOfSegments::_duplicate( h );
64 myVars.ChangeValue( 1 ) = new Expr_NamedUnknown( "t" );
65 myDensity = new QwtPlotCurve( QString() );
66 myDensity->attach( this );
67 myDistr = new QwtPlotCurve( QString() );
68 myDistr->attach( this );
69 myMsg = new QwtPlotMarker();
70 myMsg->attach( this );
71 myMsg->setValue( 0.5, 0.5 );
72 QwtText mt = myMsg->label();
73 mt.setBackgroundPen( QPen( Qt::red, 1 ) );
75 f.setPointSize( 14 ); f.setBold( true );
77 myMsg->setLabel( mt );
78 myDensity->setPen( QPen( Qt::red, 1 ) );
81 myDistr->setPen( QPen( dc, 1 ) );
82 myDistr->setSymbol( QwtSymbol( QwtSymbol::XCross, QBrush( dc ), QPen( dc ), QSize( 5, 5 ) ) );
84 QwtLegend* l = legend();
86 l = new QwtLegend( this );
87 l->setFrameStyle( QFrame::Box | QFrame::Sunken );
89 insertLegend( l, QwtPlot::BottomLegend );
91 myDensity->setTitle( tr( "SMESH_DENSITY_FUNC" ) );
92 myDistr->setTitle( tr( "SMESH_DISTR" ) );
94 QwtPlotGrid* aGrid = new QwtPlotGrid();
95 QPen aMajPen = aGrid->majPen();
96 aMajPen.setStyle( Qt::DashLine );
97 aGrid->setPen( aMajPen );
99 aGrid->enableX( true );
100 aGrid->enableY( true );
102 aGrid->attach( this );
105 StdMeshersGUI_DistrPreview::~StdMeshersGUI_DistrPreview()
109 bool StdMeshersGUI_DistrPreview::isTableFunc() const
114 void StdMeshersGUI_DistrPreview::tableFunc( SMESH::double_array& f ) const
119 QString StdMeshersGUI_DistrPreview::function() const
124 int StdMeshersGUI_DistrPreview::nbSeg() const
129 int StdMeshersGUI_DistrPreview::pointsCount() const
134 void StdMeshersGUI_DistrPreview::setConversion( Conversion conv, const bool upd )
141 bool StdMeshersGUI_DistrPreview::setParams( const QString& func, const int nbSeg, const int points, const bool upd )
144 myTableFunc = SMESH::double_array();
145 myFunction = func.isEmpty() ? "0" : func;
146 myPoints = points>0 ? points : 2;
147 myNbSeg = nbSeg>0 ? nbSeg : 1;
148 bool res = init( func );
154 bool StdMeshersGUI_DistrPreview::setParams( const SMESH::double_array& f, const int nbSeg, const bool upd )
158 if( myTableFunc.length()%2==1 )
159 myTableFunc.length( myTableFunc.length()-1 );
162 myPoints = myTableFunc.length()/2;
163 myNbSeg = nbSeg>0 ? nbSeg : 1;
168 return myTableFunc.length()>0;
171 bool StdMeshersGUI_DistrPreview::createTable( SMESH::double_array& func )
173 if( myExpr.IsNull() )
179 const double xmin = 0.0, xmax = 1.0;
181 double d = (xmax-xmin)/double(myPoints-1);
182 func.length( 2*myPoints );
184 for( int i=0, j=0; i<myPoints; j++ )
187 double t = xmin + d*j, f = funcValue( t, ok );
197 func.length( func.length()-2*err );
201 void StdMeshersGUI_DistrPreview::update()
203 SMESH::double_array graph, distr;
210 myIsDone = createTable( graph );
212 if( graph.length()>=2 )
214 StdMeshers::StdMeshers_NumberOfSegments_var h =
215 StdMeshers::StdMeshers_NumberOfSegments::_narrow( myHypo );
217 if( !CORBA::is_nil( h.in() ) )
219 SMESH::double_array* arr = 0;
221 arr = h->BuildDistributionTab( myTableFunc, myNbSeg, ( int )myConv );
223 arr = h->BuildDistributionExpr( myFunction.toLatin1().data(), myNbSeg, ( int )myConv );
232 bool correct = graph.length()>=2 && distr.length()>=2;
240 QwtText mt = myMsg->label();
241 mt.setText( QString() );
242 myMsg->setLabel( mt );
245 int size = graph.length()/2;
246 double* x = new double[size], *y = new double[size];
247 double min_x, max_x, min_y, max_y;
248 for( int i=0; i<size; i++ )
252 if( !convert( y[i] ) )
254 min_x = 0.0; max_x = 1.0; min_y = 0.0; max_y = 1.0;
255 delete[] x; delete[] y;
260 if( i==0 || y[i]<min_y )
262 if( i==0 || y[i]>max_y )
264 if( i==0 || x[i]<min_x )
266 if( i==0 || x[i]>max_x )
270 setAxisScale( myDensity->xAxis(), min_x, max_x );
271 setAxisScale( myDensity->yAxis(),
276 std::min( 0.0, min_y ),
277 std::max( 0.0, max_y )
280 myDensity->setData( x, y, size );
287 size = distr.length();
288 x = new double[size];
289 y = new double[size];
290 for( int i=0; i<size; i++ )
295 myDistr->setData( x, y, size );
305 } catch(Standard_Failure) {
306 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
310 void StdMeshersGUI_DistrPreview::showError()
312 setAxisScale( myDensity->xAxis(), 0.0, 1.0 );
313 setAxisScale( myDensity->yAxis(), 0.0, 1.0 );
314 myDensity->setData( 0, 0, 0 );
315 myDistr->setData( 0, 0, 0 );
316 QwtText mt = myMsg->label();
317 mt.setText( tr( "SMESH_INVALID_FUNCTION" ) );
318 myMsg->setLabel( mt );
322 bool isCorrectArg( const Handle( Expr_GeneralExpression )& expr )
324 Handle( Expr_NamedUnknown ) sub = Handle( Expr_NamedUnknown )::DownCast( expr );
326 return sub->GetName()=="t";
329 for( int i=1, n=expr->NbSubExpressions(); i<=n && res; i++ )
331 Handle( Expr_GeneralExpression ) sub = expr->SubExpression( i );
332 Handle( Expr_NamedUnknown ) name = Handle( Expr_NamedUnknown )::DownCast( sub );
335 if( name->GetName()!="t" )
339 res = isCorrectArg( sub );
344 bool StdMeshersGUI_DistrPreview::init( const QString& str )
346 bool parsed_ok = true;
351 myExpr = ExprIntrp_GenExp::Create();
352 myExpr->Process( ( Standard_CString ) str.toLatin1().data() );
353 } catch(Standard_Failure) {
354 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
358 bool syntax = false, args = false;
359 if( parsed_ok && myExpr->IsDone() )
362 args = isCorrectArg( myExpr->Expression() );
365 bool res = parsed_ok && syntax && args;
371 double StdMeshersGUI_DistrPreview::funcValue( const double t, bool& ok )
373 if( myExpr.IsNull() )
376 myValues.ChangeValue( 1 ) = t;
379 double res = calc( ok );
384 double StdMeshersGUI_DistrPreview::calc( bool& ok )
393 res = myExpr->Expression()->Evaluate( myVars, myValues );
394 } catch(Standard_Failure) {
395 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
403 bool StdMeshersGUI_DistrPreview::isDone() const
408 bool StdMeshersGUI_DistrPreview::convert( double& v ) const
419 // in StdMeshers_NumberOfSegments.cc
420 // const double PRECISION = 1e-7;
424 } catch(Standard_Failure) {
425 Handle(Standard_Failure) aFail = Standard_Failure::Caught();