mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-09-24 11:42:51 +05:00
468 lines
10 KiB
C++
468 lines
10 KiB
C++
// Copyright (C) 2007-2012 CEA/DEN, EDF R&D, OPEN CASCADE
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//
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// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
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// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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//
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// File : StdMeshersGUI_DistrPreview.cxx
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// Author : Open CASCADE S.A.S.
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// SMESH includes
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//
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#include "StdMeshersGUI_DistrPreview.h"
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// Qwt includes
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#include <qwt_plot_curve.h>
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#include <qwt_plot_marker.h>
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#include <qwt_plot_grid.h>
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#include <qwt_symbol.h>
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#include <qwt_legend.h>
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// OCCT includes
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#include <Expr_NamedUnknown.hxx>
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#include <Expr_GeneralExpression.hxx>
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#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
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#define NO_CAS_CATCH
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#endif
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#include <Standard_Failure.hxx>
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#ifdef NO_CAS_CATCH
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#include <Standard_ErrorHandler.hxx>
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#endif
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#ifdef WIN32
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# include <algorithm>
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#endif
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#include <math.h>
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#include <limits>
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#include <Basics_Utils.hxx>
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StdMeshersGUI_DistrPreview::StdMeshersGUI_DistrPreview( QWidget* p, StdMeshers::StdMeshers_NumberOfSegments_ptr h )
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: QwtPlot( p ),
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myPoints( 50 ),
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myIsTable( false ),
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myVars( 1, 1 ),
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myValues( 1, 1 ),
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myConv( CUT_NEGATIVE ),
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myIsDone( true ),
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myNbSeg( 1 )
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{
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Kernel_Utils::Localizer loc;
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myHypo = StdMeshers::StdMeshers_NumberOfSegments::_duplicate( h );
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myVars.ChangeValue( 1 ) = new Expr_NamedUnknown( "t" );
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myDensity = new QwtPlotCurve( QString() );
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myDensity->attach( this );
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myDistr = new QwtPlotCurve( QString() );
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myDistr->attach( this );
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myMsg = new QwtPlotMarker();
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myMsg->attach( this );
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myMsg->setValue( 0.5, 0.5 );
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QwtText mt = myMsg->label();
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mt.setBackgroundPen( QPen( Qt::red, 1 ) );
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QFont f = mt.font();
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f.setPointSize( 14 ); //f.setBold( true );
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mt.setFont( f );
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myMsg->setLabel( mt );
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myDensity->setPen( QPen( Qt::red, 1 ) );
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QColor dc = Qt::blue;
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myDistr->setPen( QPen( dc, 1 ) );
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myDistr->setSymbol( QwtSymbol( QwtSymbol::XCross, QBrush( dc ), QPen( dc ), QSize( 5, 5 ) ) );
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QwtLegend* l = legend();
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if ( !l ) {
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l = new QwtLegend( this );
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l->setFrameStyle( QFrame::Box | QFrame::Sunken );
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}
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insertLegend( l, QwtPlot::BottomLegend );
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enableAxis(QwtPlot::yLeft, false);
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enableAxis(QwtPlot::yRight, true);
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QFont axisFont;
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axisFont.setPointSize( 8 );
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setAxisFont(QwtPlot::yRight, axisFont);
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setAxisFont(QwtPlot::xBottom, axisFont);
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myDensity->setYAxis(QwtPlot::yRight);
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myDistr->setYAxis(QwtPlot::yRight);
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myMsg->setYAxis(QwtPlot::yRight);
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myDensity->setTitle( tr( "SMESH_DENSITY_FUNC" ) );
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myDistr->setTitle( tr( "SMESH_DISTR" ) );
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QwtPlotGrid* aGrid = new QwtPlotGrid();
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QPen aMajPen = aGrid->majPen();
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aMajPen.setStyle( Qt::DashLine );
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aGrid->setPen( aMajPen );
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aGrid->enableX( true );
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aGrid->enableY( true );
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aGrid->attach( this );
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}
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StdMeshersGUI_DistrPreview::~StdMeshersGUI_DistrPreview()
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{
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}
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bool StdMeshersGUI_DistrPreview::isTableFunc() const
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{
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return myIsTable;
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}
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void StdMeshersGUI_DistrPreview::tableFunc( SMESH::double_array& f ) const
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{
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f = myTableFunc;
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}
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QString StdMeshersGUI_DistrPreview::function() const
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{
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return myFunction;
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}
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int StdMeshersGUI_DistrPreview::nbSeg() const
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{
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return myNbSeg;
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}
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int StdMeshersGUI_DistrPreview::pointsCount() const
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{
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return myPoints;
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}
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void StdMeshersGUI_DistrPreview::setConversion( Conversion conv, const bool upd )
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{
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myConv = conv;
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if( upd )
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update();
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}
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bool StdMeshersGUI_DistrPreview::setParams( const QString& func, const int nbSeg, const int points, const bool upd )
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{
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myIsTable = false;
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myTableFunc = SMESH::double_array();
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myFunction = func.isEmpty() ? "0" : func;
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myPoints = points>0 ? points : 2;
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myNbSeg = nbSeg>0 ? nbSeg : 1;
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bool res = init( func );
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if( upd )
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update();
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return res;
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}
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bool StdMeshersGUI_DistrPreview::setParams( const SMESH::double_array& f, const int nbSeg, const bool upd )
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{
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myIsTable = true;
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myTableFunc = f;
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if( myTableFunc.length()%2==1 )
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myTableFunc.length( myTableFunc.length()-1 );
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myFunction = "0";
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myPoints = myTableFunc.length()/2;
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myNbSeg = nbSeg>0 ? nbSeg : 1;
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if( upd )
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update();
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return myTableFunc.length()>0;
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}
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bool StdMeshersGUI_DistrPreview::createTable( SMESH::double_array& func )
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{
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if( myExpr.IsNull() )
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{
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func.length( 0 );
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return false;
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}
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const double xmin = 0.0, xmax = 1.0;
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double d = (xmax-xmin)/double(myPoints-1);
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func.length( 2*myPoints );
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int err = 0;
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for( int i=0, j=0; i<myPoints; j++ )
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{
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bool ok;
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double t = xmin + d*j, f = funcValue( t, ok );
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if( ok )
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{
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func[2*i] = t;
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func[2*i+1] = f;
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i++;
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}
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else
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err++;
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}
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func.length( func.length()-2*err );
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return err==0;
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}
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void StdMeshersGUI_DistrPreview::update()
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{
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Kernel_Utils::Localizer loc;
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SMESH::double_array graph, distr;
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if( isTableFunc() )
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{
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myIsDone = true;
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graph = myTableFunc;
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}
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else
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myIsDone = createTable( graph );
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if( graph.length()>=2 )
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{
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StdMeshers::StdMeshers_NumberOfSegments_var h =
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StdMeshers::StdMeshers_NumberOfSegments::_narrow( myHypo );
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if( !CORBA::is_nil( h.in() ) )
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{
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SMESH::double_array* arr = 0;
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if( isTableFunc() )
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arr = h->BuildDistributionTab( myTableFunc, myNbSeg, ( int )myConv );
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else
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arr = h->BuildDistributionExpr( myFunction.toLatin1().data(), myNbSeg, ( int )myConv );
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if( arr )
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{
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distr = *arr;
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delete arr;
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}
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}
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}
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bool correct = graph.length()>=2 && distr.length()>=2;
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if( !correct )
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{
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showError();
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return;
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}
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else
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{
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QwtText mt = myMsg->label();
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mt.setText( QString() );
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myMsg->setLabel( mt );
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}
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int size = graph.length()/2;
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double* x = new double[size], *y = new double[size];
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double min_x, max_x, min_y, max_y;
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for( int i=0; i<size; i++ )
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{
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x[i] = graph[2*i];
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y[i] = graph[2*i+1];
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if( !convert( y[i] ) )
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{
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min_x = 0.0; max_x = 1.0; min_y = 0.0; max_y = 1.0;
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delete[] x; delete[] y;
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x = y = 0;
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showError();
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return;
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}
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#ifdef WIN32
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if ( std::fabs(y[i]) >= HUGE_VAL)
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y[i] = HUGE_VAL/100.;
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#else
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if ( isinf(y[i]))
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y[i] = std::numeric_limits<double>::max()/100.;
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#endif
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// if ( y[i] > 1e3 )
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// y[i] = 1e3;
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if( i==0 || y[i]<min_y )
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min_y = y[i];
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if( i==0 || y[i]>max_y )
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max_y = y[i];
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if( i==0 || x[i]<min_x )
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min_x = x[i];
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if( i==0 || x[i]>max_x )
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max_x = x[i];
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}
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setAxisScale( myDensity->xAxis(), min_x, max_x );
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setAxisScale( myDensity->yAxis(),
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#ifdef WIN32
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min( 0.0, min_y ),
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max( 0.0, max_y )
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#else
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std::min( 0.0, min_y ),
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std::max( 0.0, max_y )
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#endif
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);
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myDensity->setData( x, y, size );
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if( x )
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delete[] x;
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if( y )
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delete[] y;
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x = y = 0;
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size = distr.length();
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x = new double[size];
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y = new double[size];
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for( int i=0; i<size; i++ )
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{
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x[i] = distr[i];
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y[i] = 0;
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}
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myDistr->setData( x, y, size );
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delete[] x;
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delete[] y;
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x = y = 0;
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try {
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#ifdef NO_CAS_CATCH
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OCC_CATCH_SIGNALS;
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#endif
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replot();
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} catch(Standard_Failure) {
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Handle(Standard_Failure) aFail = Standard_Failure::Caught();
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}
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}
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void StdMeshersGUI_DistrPreview::showError()
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{
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setAxisScale( myDensity->xAxis(), 0.0, 1.0 );
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setAxisScale( myDensity->yAxis(), 0.0, 1.0 );
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myDensity->setData( 0, 0, 0 );
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myDistr->setData( 0, 0, 0 );
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QwtText mt = myMsg->label();
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mt.setText( tr( "SMESH_INVALID_FUNCTION" ) );
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myMsg->setLabel( mt );
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replot();
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}
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bool isCorrectArg( const Handle( Expr_GeneralExpression )& expr )
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{
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Handle( Expr_NamedUnknown ) sub = Handle( Expr_NamedUnknown )::DownCast( expr );
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if( !sub.IsNull() )
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return sub->GetName()=="t";
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bool res = true;
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for( int i=1, n=expr->NbSubExpressions(); i<=n && res; i++ )
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{
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Handle( Expr_GeneralExpression ) sub = expr->SubExpression( i );
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Handle( Expr_NamedUnknown ) name = Handle( Expr_NamedUnknown )::DownCast( sub );
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if( !name.IsNull() )
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{
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if( name->GetName()!="t" )
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res = false;
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}
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else
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res = isCorrectArg( sub );
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}
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return res;
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}
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bool StdMeshersGUI_DistrPreview::init( const QString& str )
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{
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Kernel_Utils::Localizer loc;
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bool parsed_ok = true;
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try {
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#ifdef NO_CAS_CATCH
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OCC_CATCH_SIGNALS;
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#endif
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myExpr = ExprIntrp_GenExp::Create();
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myExpr->Process( ( Standard_CString ) str.toLatin1().data() );
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} catch(Standard_Failure) {
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Handle(Standard_Failure) aFail = Standard_Failure::Caught();
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parsed_ok = false;
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}
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bool syntax = false, args = false;
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if( parsed_ok && myExpr->IsDone() )
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{
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syntax = true;
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args = isCorrectArg( myExpr->Expression() );
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}
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bool res = parsed_ok && syntax && args;
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if( !res )
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myExpr.Nullify();
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return res;
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}
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double StdMeshersGUI_DistrPreview::funcValue( const double t, bool& ok )
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{
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if( myExpr.IsNull() )
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return 0;
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myValues.ChangeValue( 1 ) = t;
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ok = true;
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double res = calc( ok );
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return res;
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}
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double StdMeshersGUI_DistrPreview::calc( bool& ok )
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{
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double res = 0.0;
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ok = true;
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try {
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#ifdef NO_CAS_CATCH
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OCC_CATCH_SIGNALS;
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#endif
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res = myExpr->Expression()->Evaluate( myVars, myValues );
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} catch(Standard_Failure) {
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Handle(Standard_Failure) aFail = Standard_Failure::Caught();
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ok = false;
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res = 0.0;
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}
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return res;
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}
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bool StdMeshersGUI_DistrPreview::isDone() const
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{
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return myIsDone;
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}
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bool StdMeshersGUI_DistrPreview::convert( double& v ) const
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{
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bool ok = true;
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switch( myConv )
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{
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case EXPONENT:
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{
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try {
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#ifdef NO_CAS_CATCH
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OCC_CATCH_SIGNALS;
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#endif
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// in StdMeshers_NumberOfSegments.cc
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// const double PRECISION = 1e-7;
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//
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if(v < -7) v = -7.0;
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v = pow( 10.0, v );
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} catch(Standard_Failure) {
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Handle(Standard_Failure) aFail = Standard_Failure::Caught();
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v = 0.0;
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ok = false;
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}
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}
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break;
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case CUT_NEGATIVE:
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if( v<0 )
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v = 0;
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break;
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}
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return ok;
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}
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