1 // Copyright (C) 2007-2010 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
23 // File : StdMeshersGUI_DistrPreview.cxx
24 // Author : Open CASCADE S.A.S.
27 #include "StdMeshersGUI_DistrPreview.h"
30 #include <qwt_plot_curve.h>
31 #include <qwt_plot_marker.h>
32 #include <qwt_plot_grid.h>
33 #include <qwt_symbol.h>
34 #include <qwt_legend.h>
37 #include <Expr_NamedUnknown.hxx>
38 #include <Expr_GeneralExpression.hxx>
40 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
44 #include <Standard_Failure.hxx>
47 #include <Standard_ErrorHandler.hxx>
55 #include <Basics_Utils.hxx>
57 StdMeshersGUI_DistrPreview::StdMeshersGUI_DistrPreview( QWidget* p, StdMeshers::StdMeshers_NumberOfSegments_ptr h )
63 myConv( CUT_NEGATIVE ),
67 Kernel_Utils::Localizer loc;
68 myHypo = StdMeshers::StdMeshers_NumberOfSegments::_duplicate( h );
69 myVars.ChangeValue( 1 ) = new Expr_NamedUnknown( "t" );
70 myDensity = new QwtPlotCurve( QString() );
71 myDensity->attach( this );
72 myDistr = new QwtPlotCurve( QString() );
73 myDistr->attach( this );
74 myMsg = new QwtPlotMarker();
75 myMsg->attach( this );
76 myMsg->setValue( 0.5, 0.5 );
77 QwtText mt = myMsg->label();
78 mt.setBackgroundPen( QPen( Qt::red, 1 ) );
80 f.setPointSize( 14 ); f.setBold( true );
82 myMsg->setLabel( mt );
83 myDensity->setPen( QPen( Qt::red, 1 ) );
86 myDistr->setPen( QPen( dc, 1 ) );
87 myDistr->setSymbol( QwtSymbol( QwtSymbol::XCross, QBrush( dc ), QPen( dc ), QSize( 5, 5 ) ) );
89 QwtLegend* l = legend();
91 l = new QwtLegend( this );
92 l->setFrameStyle( QFrame::Box | QFrame::Sunken );
94 insertLegend( l, QwtPlot::BottomLegend );
96 myDensity->setTitle( tr( "SMESH_DENSITY_FUNC" ) );
97 myDistr->setTitle( tr( "SMESH_DISTR" ) );
99 QwtPlotGrid* aGrid = new QwtPlotGrid();
100 QPen aMajPen = aGrid->majPen();
101 aMajPen.setStyle( Qt::DashLine );
102 aGrid->setPen( aMajPen );
104 aGrid->enableX( true );
105 aGrid->enableY( true );
107 aGrid->attach( this );
110 StdMeshersGUI_DistrPreview::~StdMeshersGUI_DistrPreview()
114 bool StdMeshersGUI_DistrPreview::isTableFunc() const
119 void StdMeshersGUI_DistrPreview::tableFunc( SMESH::double_array& f ) const
124 QString StdMeshersGUI_DistrPreview::function() const
129 int StdMeshersGUI_DistrPreview::nbSeg() const
134 int StdMeshersGUI_DistrPreview::pointsCount() const
139 void StdMeshersGUI_DistrPreview::setConversion( Conversion conv, const bool upd )
146 bool StdMeshersGUI_DistrPreview::setParams( const QString& func, const int nbSeg, const int points, const bool upd )
149 myTableFunc = SMESH::double_array();
150 myFunction = func.isEmpty() ? "0" : func;
151 myPoints = points>0 ? points : 2;
152 myNbSeg = nbSeg>0 ? nbSeg : 1;
153 bool res = init( func );
159 bool StdMeshersGUI_DistrPreview::setParams( const SMESH::double_array& f, const int nbSeg, const bool upd )
163 if( myTableFunc.length()%2==1 )
164 myTableFunc.length( myTableFunc.length()-1 );
167 myPoints = myTableFunc.length()/2;
168 myNbSeg = nbSeg>0 ? nbSeg : 1;
173 return myTableFunc.length()>0;
176 bool StdMeshersGUI_DistrPreview::createTable( SMESH::double_array& func )
178 if( myExpr.IsNull() )
184 const double xmin = 0.0, xmax = 1.0;
186 double d = (xmax-xmin)/double(myPoints-1);
187 func.length( 2*myPoints );
189 for( int i=0, j=0; i<myPoints; j++ )
192 double t = xmin + d*j, f = funcValue( t, ok );
202 func.length( func.length()-2*err );
206 void StdMeshersGUI_DistrPreview::update()
208 Kernel_Utils::Localizer loc;
209 SMESH::double_array graph, distr;
216 myIsDone = createTable( graph );
218 if( graph.length()>=2 )
220 StdMeshers::StdMeshers_NumberOfSegments_var h =
221 StdMeshers::StdMeshers_NumberOfSegments::_narrow( myHypo );
223 if( !CORBA::is_nil( h.in() ) )
225 SMESH::double_array* arr = 0;
227 arr = h->BuildDistributionTab( myTableFunc, myNbSeg, ( int )myConv );
229 arr = h->BuildDistributionExpr( myFunction.toLatin1().data(), myNbSeg, ( int )myConv );
238 bool correct = graph.length()>=2 && distr.length()>=2;
246 QwtText mt = myMsg->label();
247 mt.setText( QString() );
248 myMsg->setLabel( mt );
251 int size = graph.length()/2;
252 double* x = new double[size], *y = new double[size];
253 double min_x, max_x, min_y, max_y;
254 for( int i=0; i<size; i++ )
258 if( !convert( y[i] ) )
260 min_x = 0.0; max_x = 1.0; min_y = 0.0; max_y = 1.0;
261 delete[] x; delete[] y;
267 y[i] = std::numeric_limits<double>::max()/100.;
270 if( i==0 || y[i]<min_y )
272 if( i==0 || y[i]>max_y )
274 if( i==0 || x[i]<min_x )
276 if( i==0 || x[i]>max_x )
280 setAxisScale( myDensity->xAxis(), min_x, max_x );
281 setAxisScale( myDensity->yAxis(),
286 std::min( 0.0, min_y ),
287 std::max( 0.0, max_y )
290 myDensity->setData( x, y, size );
297 size = distr.length();
298 x = new double[size];
299 y = new double[size];
300 for( int i=0; i<size; i++ )
305 myDistr->setData( x, y, size );
315 } catch(Standard_Failure) {
316 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
320 void StdMeshersGUI_DistrPreview::showError()
322 setAxisScale( myDensity->xAxis(), 0.0, 1.0 );
323 setAxisScale( myDensity->yAxis(), 0.0, 1.0 );
324 myDensity->setData( 0, 0, 0 );
325 myDistr->setData( 0, 0, 0 );
326 QwtText mt = myMsg->label();
327 mt.setText( tr( "SMESH_INVALID_FUNCTION" ) );
328 myMsg->setLabel( mt );
332 bool isCorrectArg( const Handle( Expr_GeneralExpression )& expr )
334 Handle( Expr_NamedUnknown ) sub = Handle( Expr_NamedUnknown )::DownCast( expr );
336 return sub->GetName()=="t";
339 for( int i=1, n=expr->NbSubExpressions(); i<=n && res; i++ )
341 Handle( Expr_GeneralExpression ) sub = expr->SubExpression( i );
342 Handle( Expr_NamedUnknown ) name = Handle( Expr_NamedUnknown )::DownCast( sub );
345 if( name->GetName()!="t" )
349 res = isCorrectArg( sub );
354 bool StdMeshersGUI_DistrPreview::init( const QString& str )
356 Kernel_Utils::Localizer loc;
357 bool parsed_ok = true;
362 myExpr = ExprIntrp_GenExp::Create();
363 myExpr->Process( ( Standard_CString ) str.toLatin1().data() );
364 } catch(Standard_Failure) {
365 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
369 bool syntax = false, args = false;
370 if( parsed_ok && myExpr->IsDone() )
373 args = isCorrectArg( myExpr->Expression() );
376 bool res = parsed_ok && syntax && args;
382 double StdMeshersGUI_DistrPreview::funcValue( const double t, bool& ok )
384 if( myExpr.IsNull() )
387 myValues.ChangeValue( 1 ) = t;
390 double res = calc( ok );
395 double StdMeshersGUI_DistrPreview::calc( bool& ok )
404 res = myExpr->Expression()->Evaluate( myVars, myValues );
405 } catch(Standard_Failure) {
406 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
414 bool StdMeshersGUI_DistrPreview::isDone() const
419 bool StdMeshersGUI_DistrPreview::convert( double& v ) const
430 // in StdMeshers_NumberOfSegments.cc
431 // const double PRECISION = 1e-7;
435 } catch(Standard_Failure) {
436 Handle(Standard_Failure) aFail = Standard_Failure::Caught();