File indexing completed on 2024-04-21 03:44:34

 /*
     SPDX-FileCopyrightText: 2007 James B. Bowlin <bowlin@mindspring.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "equator.h"
 
 #include "kstarsdata.h"
 #include "linelist.h"
 #include "Options.h"
 #include "skylabeler.h"
 #ifdef KSTARS_LITE
 #include "skymaplite.h"
 #else
 #include "skymap.h"
 #endif
 #include "skypainter.h"
 #include "projections/projector.h"
 
 Equator::Equator(SkyComposite *parent) : NoPrecessIndex(parent, i18n("Equator")), m_label(LineListIndex::name())
 {
     KStarsData *data = KStarsData::Instance();
     KSNumbers num(data->ut().djd());
 
     const double eps   = 0.1;
     const double minRa = 0.0;
     const double maxRa = 23.0;
     const double dRa   = 2.0;
     const double dRa2  = .5 / 5.;
 
     for (double ra = minRa; ra < maxRa; ra += dRa)
     {
         std::shared_ptr<LineList> lineList(new LineList());
 
         for (double ra2 = ra; ra2 <= ra + dRa + eps; ra2 += dRa2)
         {
             std::shared_ptr<SkyPoint> o(new SkyPoint(ra2, 0.0));
 
             o->EquatorialToHorizontal(data->lst(), data->geo()->lat());
             lineList->append(std::move(o));
         }
         appendLine(lineList);
     }
 }
 
 bool Equator::selected()
 {
     return Options::showEquator();
 }
 
 void Equator::preDraw(SkyPainter *skyp)
 {
     KStarsData *data = KStarsData::Instance();
     QColor color(data->colorScheme()->colorNamed("EqColor"));
     skyp->setPen(QPen(QBrush(color), 1, Qt::SolidLine));
 }
 
 void Equator::draw(SkyPainter *skyp)
 {
     if (!selected())
         return;
 
     m_label.reset();
     NoPrecessIndex::draw(skyp);
 
     KStarsData *data = KStarsData::Instance();
     QColor color(data->colorScheme()->colorNamed("EqColor"));
     SkyLabeler::Instance()->setPen(QPen(QBrush(color), 1, Qt::SolidLine));
     m_label.draw();
 
     drawCompassLabels();
 }
 
 void Equator::drawCompassLabels()
 {
 #ifndef KSTARS_LITE
     QString label;
 
     const Projector *proj  = SkyMap::Instance()->projector();
     KStarsData *data       = KStarsData::Instance();
     SkyLabeler *skyLabeler = SkyLabeler::Instance();
     // Set proper color for labels
     QColor color(data->colorScheme()->colorNamed("CompassColor"));
     skyLabeler->setPen(QPen(QBrush(color), 1, Qt::SolidLine));
 
     KSNumbers num(data->ut().djd());
     for (int ra = 0; ra < 23; ra += 2)
     {
         SkyPoint o(ra, 0.0);
         o.EquatorialToHorizontal(data->lst(), data->geo()->lat());
         bool visible;
         QPointF cpoint = proj->toScreen(&o, false, &visible);
         if (visible && proj->checkVisibility(&o))
         {
             label.setNum(o.ra().hour());
             skyLabeler->drawGuideLabel(cpoint, label, 0.0);
         }
     }
 #endif
 }