kstars/kstars/tools/jmoontool.cpp

   1 /***************************************************************************
   2                           jmoontool.cpp  -  Display overhead view of the solar system
   3                              -------------------
   4     begin                : Sun May 25 2003
   5     copyright            : (C) 2003 by Jason Harris
   6     email                : jharris@30doradus.org
   7  ***************************************************************************/
   8 /***************************************************************************
   9  *                                                                         *
  10  *   This program is free software; you can redistribute it and/or modify  *
  11  *   it under the terms of the GNU General Public License as published by  *
  12  *   the Free Software Foundation; either version 2 of the License, or     *
  13  *   (at your option) any later version.                                   *
  14  *                                                                         *
  15  ***************************************************************************/
  16
  17 #include <qlayout.h>
  18 #include <qlabel.h>
  19
  20 #include <kdebug.h>
  21 #include <klocale.h>
  22
  23 #include "jmoontool.h"
  24 #include "jupitermoons.h"
  25 #include "kstars.h"
  26 #include "kstarsdata.h"
  27 #include "ksplanet.h"
  28 #include "simclock.h"
  29 #include "planetcatalog.h"
  30 #include "dms.h"
  31 #include "ksnumbers.h"
  32
  33 JMoonTool::JMoonTool(QWidget *parent, const char *name)
  34  : KDialogBase( KDialogBase::Plain, i18n("Jupiter Moons Tool"), Close, Close, parent, name )
  35 {
  36         ksw = (KStars*)parent;
  37
  38         QFrame *page = plainPage();
  39         QVBoxLayout *vlay = new QVBoxLayout( page, 0, 0 );
  40
  41         colJp = "White";
  42         colIo = "Red";
  43         colEu = "Yellow";
  44         colGn = "Orange";
  45         colCa = "YellowGreen";
  46
  47         QLabel *labIo = new QLabel( "Io", page );
  48         QLabel *labEu = new QLabel( "Europa", page );
  49         QLabel *labGn = new QLabel( "Ganymede", page );
  50         QLabel *labCa = new QLabel( "Callisto", page );
  51
  52         labIo->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
  53         labEu->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
  54         labGn->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
  55         labCa->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
  56         labIo->setAlignment( AlignHCenter );
  57         labEu->setAlignment( AlignHCenter );
  58         labGn->setAlignment( AlignHCenter );
  59         labCa->setAlignment( AlignHCenter );
  60
  61         labIo->setPaletteForegroundColor( colIo );
  62         labEu->setPaletteForegroundColor( colEu );
  63         labGn->setPaletteForegroundColor( colGn );
  64         labCa->setPaletteForegroundColor( colCa );
  65         labIo->setPaletteBackgroundColor( "Black" );
  66         labEu->setPaletteBackgroundColor( "Black" );
  67         labGn->setPaletteBackgroundColor( "Black" );
  68         labCa->setPaletteBackgroundColor( "Black" );
  69
  70         QGridLayout *glay = new QGridLayout( 2, 2, 0 );
  71         glay->addWidget( labIo, 0, 0 );
  72         glay->addWidget( labEu, 1, 0 );
  73         glay->addWidget( labGn, 0, 1 );
  74         glay->addWidget( labCa, 1, 1 );
  75
  76         pw = new KStarsPlotWidget( 0.0, 1.0, 0.0, 1.0, page );
  77         pw->setShowGrid( false );
  78         pw->setYAxisType0( KStarsPlotWidget::TIME );
  79         pw->setLimits( -12.0, 12.0, -240.0, 240.0 );
  80         pw->setXAxisLabel( i18n( "offset from Jupiter (arcmin)" ) );
  81         pw->setYAxisLabel( i18n( "time since now (days)" ) );
  82         vlay->addLayout( glay );
  83         vlay->addWidget( pw );
  84         resize( 250, 500 );
  85
  86         initPlotObjects();
  87         update();
  88 }
  89
  90 JMoonTool::~JMoonTool()
  91 {
  92 }
  93
  94 void JMoonTool::initPlotObjects() {
  95         KPlotObject *orbit[4];
  96         KPlotObject *jpath;
  97         long double jd0 = ksw->data()->ut().djd();
  98         KSSun *ksun = (KSSun*)ksw->data()->PCat->findByName( "Sun" );
  99         KSPlanet *jup = (KSPlanet*)ksw->data()->PCat->findByName( "Jupiter" );
 100         JupiterMoons jm;
 101
 102         if ( pw->objectCount() ) pw->clearObjectList();
 103
 104         orbit[0] = new KPlotObject( "io", colIo, KPlotObject::CURVE, 1, KPlotObject::SOLID );
 105         orbit[1] = new KPlotObject( "europa", colEu, KPlotObject::CURVE, 1, KPlotObject::SOLID );
 106         orbit[2] = new KPlotObject( "ganymede", colGn, KPlotObject::CURVE, 1, KPlotObject::SOLID );
 107         orbit[3] = new KPlotObject( "callisto", colCa, KPlotObject::CURVE, 1, KPlotObject::SOLID );
 108         jpath    = new KPlotObject( "jupiter", colJp, KPlotObject::CURVE, 1, KPlotObject::SOLID );
 109
 110         double dy = 0.01*pw->dataHeight();
 111
 112         //t is the offset from jd0, in hours.
 113         for ( double t=pw->y(); t<=pw->y2(); t+=dy ) {
 114                 KSNumbers num( jd0 + t/24.0 );
 115                 jm.findPosition( &num, jup, ksun );
 116
 117                 //jm.x(i) tells the offset from Jupiter, in units of Jupiter's angular radius.
 118                 //multiply by 0.5*jup->angSize() to get arcminutes
 119                 for ( unsigned int i=0; i<4; ++i )
 120                         orbit[i]->addPoint( new DPoint( 0.5*jup->angSize()*jm.x(i), t ) );
 121
 122                 jpath->addPoint( new DPoint( 0.0, t ) );
 123         }
 124
 125         for ( unsigned int i=0; i<4; ++i )
 126                 pw->addObject( orbit[i] );
 127
 128         pw->addObject( jpath );
 129 }
 130
 131 void JMoonTool::keyPressEvent( QKeyEvent *e ) {
 132         switch ( e->key() ) {
 133                 case Key_BracketRight:
 134                 {
 135                         double dy = 0.02*pw->dataHeight();
 136                         pw->setLimits( pw->x(), pw->x2(), pw->y()+dy, pw->y2()+dy );
 137                         initPlotObjects();
 138                         pw->update();
 139                         break;
 140                 }
 141                 case Key_BracketLeft:
 142                 {
 143                         double dy = 0.02*pw->dataHeight();
 144                         pw->setLimits( pw->x(), pw->x2(), pw->y()-dy, pw->y2()-dy );
 145                         initPlotObjects();
 146                         pw->update();
 147                         break;
 148                 }
 149                 case Key_Plus:
 150                 case Key_Equal:
 151                 {
 152                         if ( pw->dataHeight() > 48.0 ) {
 153                                 double dy = 0.45*pw->dataHeight();
 154                                 double y0 = pw->y() + 0.5*pw->dataHeight();
 155                                 pw->setLimits( pw->x(), pw->x2(), y0-dy, y0+dy );
 156                                 initPlotObjects();
 157                                 pw->update();
 158                         }
 159                         break;
 160                 }
 161                 case Key_Minus:
 162                 case Key_Underscore:
 163                 {
 164                         if ( pw->dataHeight() < 960.0 ) {
 165                                 double dy = 0.55*pw->dataHeight();
 166                                 double y0 = pw->y() + 0.5*pw->dataHeight();
 167                                 pw->setLimits( pw->x(), pw->x2(), y0-dy, y0+dy );
 168                                 initPlotObjects();
 169                                 pw->update();
 170                         }
 171                         break;
 172                 }
 173                 case Key_Escape:
 174                 {
 175                         close();
 176                         break;
 177                 }
 178
 179                 default: { e->ignore(); break; }
 180         }
 181 }
 182
 183 #include "jmoontool.moc"