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 #include <Basics_Utils.hxx>
55 StdMeshersGUI_DistrPreview::StdMeshersGUI_DistrPreview( QWidget* p, StdMeshers::StdMeshers_NumberOfSegments_ptr h )
61 myConv( CUT_NEGATIVE ),
65 Kernel_Utils::Localizer loc;
66 myHypo = StdMeshers::StdMeshers_NumberOfSegments::_duplicate( h );
67 myVars.ChangeValue( 1 ) = new Expr_NamedUnknown( "t" );
68 myDensity = new QwtPlotCurve( QString() );
69 myDensity->attach( this );
70 myDistr = new QwtPlotCurve( QString() );
71 myDistr->attach( this );
72 myMsg = new QwtPlotMarker();
73 myMsg->attach( this );
74 myMsg->setValue( 0.5, 0.5 );
75 QwtText mt = myMsg->label();
76 mt.setBackgroundPen( QPen( Qt::red, 1 ) );
78 f.setPointSize( 14 ); f.setBold( true );
80 myMsg->setLabel( mt );
81 myDensity->setPen( QPen( Qt::red, 1 ) );
84 myDistr->setPen( QPen( dc, 1 ) );
85 myDistr->setSymbol( QwtSymbol( QwtSymbol::XCross, QBrush( dc ), QPen( dc ), QSize( 5, 5 ) ) );
87 QwtLegend* l = legend();
89 l = new QwtLegend( this );
90 l->setFrameStyle( QFrame::Box | QFrame::Sunken );
92 insertLegend( l, QwtPlot::BottomLegend );
94 myDensity->setTitle( tr( "SMESH_DENSITY_FUNC" ) );
95 myDistr->setTitle( tr( "SMESH_DISTR" ) );
97 QwtPlotGrid* aGrid = new QwtPlotGrid();
98 QPen aMajPen = aGrid->majPen();
99 aMajPen.setStyle( Qt::DashLine );
100 aGrid->setPen( aMajPen );
102 aGrid->enableX( true );
103 aGrid->enableY( true );
105 aGrid->attach( this );
108 StdMeshersGUI_DistrPreview::~StdMeshersGUI_DistrPreview()
112 bool StdMeshersGUI_DistrPreview::isTableFunc() const
117 void StdMeshersGUI_DistrPreview::tableFunc( SMESH::double_array& f ) const
122 QString StdMeshersGUI_DistrPreview::function() const
127 int StdMeshersGUI_DistrPreview::nbSeg() const
132 int StdMeshersGUI_DistrPreview::pointsCount() const
137 void StdMeshersGUI_DistrPreview::setConversion( Conversion conv, const bool upd )
144 bool StdMeshersGUI_DistrPreview::setParams( const QString& func, const int nbSeg, const int points, const bool upd )
147 myTableFunc = SMESH::double_array();
148 myFunction = func.isEmpty() ? "0" : func;
149 myPoints = points>0 ? points : 2;
150 myNbSeg = nbSeg>0 ? nbSeg : 1;
151 bool res = init( func );
157 bool StdMeshersGUI_DistrPreview::setParams( const SMESH::double_array& f, const int nbSeg, const bool upd )
161 if( myTableFunc.length()%2==1 )
162 myTableFunc.length( myTableFunc.length()-1 );
165 myPoints = myTableFunc.length()/2;
166 myNbSeg = nbSeg>0 ? nbSeg : 1;
171 return myTableFunc.length()>0;
174 bool StdMeshersGUI_DistrPreview::createTable( SMESH::double_array& func )
176 if( myExpr.IsNull() )
182 const double xmin = 0.0, xmax = 1.0;
184 double d = (xmax-xmin)/double(myPoints-1);
185 func.length( 2*myPoints );
187 for( int i=0, j=0; i<myPoints; j++ )
190 double t = xmin + d*j, f = funcValue( t, ok );
200 func.length( func.length()-2*err );
204 void StdMeshersGUI_DistrPreview::update()
206 Kernel_Utils::Localizer loc;
207 SMESH::double_array graph, distr;
214 myIsDone = createTable( graph );
216 if( graph.length()>=2 )
218 StdMeshers::StdMeshers_NumberOfSegments_var h =
219 StdMeshers::StdMeshers_NumberOfSegments::_narrow( myHypo );
221 if( !CORBA::is_nil( h.in() ) )
223 SMESH::double_array* arr = 0;
225 arr = h->BuildDistributionTab( myTableFunc, myNbSeg, ( int )myConv );
227 arr = h->BuildDistributionExpr( myFunction.toLatin1().data(), myNbSeg, ( int )myConv );
236 bool correct = graph.length()>=2 && distr.length()>=2;
244 QwtText mt = myMsg->label();
245 mt.setText( QString() );
246 myMsg->setLabel( mt );
249 int size = graph.length()/2;
250 double* x = new double[size], *y = new double[size];
251 double min_x, max_x, min_y, max_y;
252 for( int i=0; i<size; i++ )
256 if( !convert( y[i] ) )
258 min_x = 0.0; max_x = 1.0; min_y = 0.0; max_y = 1.0;
259 delete[] x; delete[] y;
264 if( i==0 || y[i]<min_y )
266 if( i==0 || y[i]>max_y )
268 if( i==0 || x[i]<min_x )
270 if( i==0 || x[i]>max_x )
274 setAxisScale( myDensity->xAxis(), min_x, max_x );
275 setAxisScale( myDensity->yAxis(),
280 std::min( 0.0, min_y ),
281 std::max( 0.0, max_y )
284 myDensity->setData( x, y, size );
291 size = distr.length();
292 x = new double[size];
293 y = new double[size];
294 for( int i=0; i<size; i++ )
299 myDistr->setData( x, y, size );
309 } catch(Standard_Failure) {
310 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
314 void StdMeshersGUI_DistrPreview::showError()
316 setAxisScale( myDensity->xAxis(), 0.0, 1.0 );
317 setAxisScale( myDensity->yAxis(), 0.0, 1.0 );
318 myDensity->setData( 0, 0, 0 );
319 myDistr->setData( 0, 0, 0 );
320 QwtText mt = myMsg->label();
321 mt.setText( tr( "SMESH_INVALID_FUNCTION" ) );
322 myMsg->setLabel( mt );
326 bool isCorrectArg( const Handle( Expr_GeneralExpression )& expr )
328 Handle( Expr_NamedUnknown ) sub = Handle( Expr_NamedUnknown )::DownCast( expr );
330 return sub->GetName()=="t";
333 for( int i=1, n=expr->NbSubExpressions(); i<=n && res; i++ )
335 Handle( Expr_GeneralExpression ) sub = expr->SubExpression( i );
336 Handle( Expr_NamedUnknown ) name = Handle( Expr_NamedUnknown )::DownCast( sub );
339 if( name->GetName()!="t" )
343 res = isCorrectArg( sub );
348 bool StdMeshersGUI_DistrPreview::init( const QString& str )
350 Kernel_Utils::Localizer loc;
351 bool parsed_ok = true;
356 myExpr = ExprIntrp_GenExp::Create();
357 myExpr->Process( ( Standard_CString ) str.toLatin1().data() );
358 } catch(Standard_Failure) {
359 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
363 bool syntax = false, args = false;
364 if( parsed_ok && myExpr->IsDone() )
367 args = isCorrectArg( myExpr->Expression() );
370 bool res = parsed_ok && syntax && args;
376 double StdMeshersGUI_DistrPreview::funcValue( const double t, bool& ok )
378 if( myExpr.IsNull() )
381 myValues.ChangeValue( 1 ) = t;
384 double res = calc( ok );
389 double StdMeshersGUI_DistrPreview::calc( bool& ok )
398 res = myExpr->Expression()->Evaluate( myVars, myValues );
399 } catch(Standard_Failure) {
400 Handle(Standard_Failure) aFail = Standard_Failure::Caught();
408 bool StdMeshersGUI_DistrPreview::isDone() const
413 bool StdMeshersGUI_DistrPreview::convert( double& v ) const
424 // in StdMeshers_NumberOfSegments.cc
425 // const double PRECISION = 1e-7;
429 } catch(Standard_Failure) {
430 Handle(Standard_Failure) aFail = Standard_Failure::Caught();