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>
54 #include <Basics_Utils.hxx>
56 StdMeshersGUI_DistrPreview::StdMeshersGUI_DistrPreview( QWidget* p, StdMeshers::StdMeshers_NumberOfSegments_ptr h )
62 myConv( CUT_NEGATIVE ),
66 Kernel_Utils::Localizer loc;
67 myHypo = StdMeshers::StdMeshers_NumberOfSegments::_duplicate( h );
68 myVars.ChangeValue( 1 ) = new Expr_NamedUnknown( "t" );
69 myDensity = new QwtPlotCurve( QString() );
70 myDensity->attach( this );
71 myDistr = new QwtPlotCurve( QString() );
72 myDistr->attach( this );
73 myMsg = new QwtPlotMarker();
74 myMsg->attach( this );
75 myMsg->setValue( 0.5, 0.5 );
76 QwtText mt = myMsg->label();
77 mt.setBackgroundPen( QPen( Qt::red, 1 ) );
79 f.setPointSize( 14 ); f.setBold( true );
81 myMsg->setLabel( mt );
82 myDensity->setPen( QPen( Qt::red, 1 ) );
85 myDistr->setPen( QPen( dc, 1 ) );
86 myDistr->setSymbol( QwtSymbol( QwtSymbol::XCross, QBrush( dc ), QPen( dc ), QSize( 5, 5 ) ) );
88 QwtLegend* l = legend();
90 l = new QwtLegend( this );
91 l->setFrameStyle( QFrame::Box | QFrame::Sunken );
93 insertLegend( l, QwtPlot::BottomLegend );
95 myDensity->setTitle( tr( "SMESH_DENSITY_FUNC" ) );
96 myDistr->setTitle( tr( "SMESH_DISTR" ) );
98 QwtPlotGrid* aGrid = new QwtPlotGrid();
99 QPen aMajPen = aGrid->majPen();
100 aMajPen.setStyle( Qt::DashLine );
101 aGrid->setPen( aMajPen );
103 aGrid->enableX( true );
104 aGrid->enableY( true );
106 aGrid->attach( this );
109 StdMeshersGUI_DistrPreview::~StdMeshersGUI_DistrPreview()
113 bool StdMeshersGUI_DistrPreview::isTableFunc() const
118 void StdMeshersGUI_DistrPreview::tableFunc( SMESH::double_array& f ) const
123 QString StdMeshersGUI_DistrPreview::function() const
128 int StdMeshersGUI_DistrPreview::nbSeg() const
133 int StdMeshersGUI_DistrPreview::pointsCount() const
138 void StdMeshersGUI_DistrPreview::setConversion( Conversion conv, const bool upd )
145 bool StdMeshersGUI_DistrPreview::setParams( const QString& func, const int nbSeg, const int points, const bool upd )
148 myTableFunc = SMESH::double_array();
149 myFunction = func.isEmpty() ? "0" : func;
150 myPoints = points>0 ? points : 2;
151 myNbSeg = nbSeg>0 ? nbSeg : 1;
152 bool res = init( func );
158 bool StdMeshersGUI_DistrPreview::setParams( const SMESH::double_array& f, const int nbSeg, const bool upd )
162 if( myTableFunc.length()%2==1 )
163 myTableFunc.length( myTableFunc.length()-1 );
166 myPoints = myTableFunc.length()/2;
167 myNbSeg = nbSeg>0 ? nbSeg : 1;
172 return myTableFunc.length()>0;
175 bool StdMeshersGUI_DistrPreview::createTable( SMESH::double_array& func )
177 if( myExpr.IsNull() )
183 const double xmin = 0.0, xmax = 1.0;
185 double d = (xmax-xmin)/double(myPoints-1);
186 func.length( 2*myPoints );
188 for( int i=0, j=0; i<myPoints; j++ )
191 double t = xmin + d*j, f = funcValue( t, ok );
201 func.length( func.length()-2*err );
205 void StdMeshersGUI_DistrPreview::update()
207 Kernel_Utils::Localizer loc;
208 SMESH::double_array graph, distr;
215 myIsDone = createTable( graph );
217 if( graph.length()>=2 )
219 StdMeshers::StdMeshers_NumberOfSegments_var h =
220 StdMeshers::StdMeshers_NumberOfSegments::_narrow( myHypo );
222 if( !CORBA::is_nil( h.in() ) )
224 SMESH::double_array* arr = 0;
226 arr = h->BuildDistributionTab( myTableFunc, myNbSeg, ( int )myConv );
228 arr = h->BuildDistributionExpr( myFunction.toLatin1().data(), myNbSeg, ( int )myConv );
237 bool correct = graph.length()>=2 && distr.length()>=2;
245 QwtText mt = myMsg->label();
246 mt.setText( QString() );
247 myMsg->setLabel( mt );
250 int size = graph.length()/2;
251 double* x = new double[size], *y = new double[size];
252 double min_x, max_x, min_y, max_y;
253 for( int i=0; i<size; i++ )
257 if( !convert( y[i] ) )
259 min_x = 0.0; max_x = 1.0; min_y = 0.0; max_y = 1.0;
260 delete[] x; delete[] y;
265 if( i==0 || y[i]<min_y )
267 if( i==0 || y[i]>max_y )
269 if( i==0 || x[i]<min_x )
271 if( i==0 || x[i]>max_x )
275 setAxisScale( myDensity->xAxis(), min_x, max_x );
276 setAxisScale( myDensity->yAxis(),
281 std::min( 0.0, min_y ),
282 std::max( 0.0, max_y )
285 myDensity->setData( x, y, size );
292 size = distr.length();
293 x = new double[size];
294 y = new double[size];
295 for( int i=0; i<size; i++ )
300 myDistr->setData( x, y, size );
310 } catch(Standard_Failure) {
311 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
315 void StdMeshersGUI_DistrPreview::showError()
317 setAxisScale( myDensity->xAxis(), 0.0, 1.0 );
318 setAxisScale( myDensity->yAxis(), 0.0, 1.0 );
319 myDensity->setData( 0, 0, 0 );
320 myDistr->setData( 0, 0, 0 );
321 QwtText mt = myMsg->label();
322 mt.setText( tr( "SMESH_INVALID_FUNCTION" ) );
323 myMsg->setLabel( mt );
327 bool isCorrectArg( const Handle( Expr_GeneralExpression )& expr )
329 Handle( Expr_NamedUnknown ) sub = Handle( Expr_NamedUnknown )::DownCast( expr );
331 return sub->GetName()=="t";
334 for( int i=1, n=expr->NbSubExpressions(); i<=n && res; i++ )
336 Handle( Expr_GeneralExpression ) sub = expr->SubExpression( i );
337 Handle( Expr_NamedUnknown ) name = Handle( Expr_NamedUnknown )::DownCast( sub );
340 if( name->GetName()!="t" )
344 res = isCorrectArg( sub );
349 bool StdMeshersGUI_DistrPreview::init( const QString& str )
351 Kernel_Utils::Localizer loc;
352 bool parsed_ok = true;
357 myExpr = ExprIntrp_GenExp::Create();
358 myExpr->Process( ( Standard_CString ) str.toLatin1().data() );
359 } catch(Standard_Failure) {
360 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
364 bool syntax = false, args = false;
365 if( parsed_ok && myExpr->IsDone() )
368 args = isCorrectArg( myExpr->Expression() );
371 bool res = parsed_ok && syntax && args;
377 double StdMeshersGUI_DistrPreview::funcValue( const double t, bool& ok )
379 if( myExpr.IsNull() )
382 myValues.ChangeValue( 1 ) = t;
385 double res = calc( ok );
390 double StdMeshersGUI_DistrPreview::calc( bool& ok )
399 res = myExpr->Expression()->Evaluate( myVars, myValues );
400 } catch(Standard_Failure) {
401 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
409 bool StdMeshersGUI_DistrPreview::isDone() const
414 bool StdMeshersGUI_DistrPreview::convert( double& v ) const
425 // in StdMeshers_NumberOfSegments.cc
426 // const double PRECISION = 1e-7;
430 } catch(Standard_Failure) {
431 Handle(Standard_Failure) aFail = Standard_Failure::Caught();