kstars/skycomponents/milkyway.cpp

0001 /*
0002     SPDX-FileCopyrightText: 2005 Jason Harris <kstars@30doradus.org>
0003
0004     SPDX-License-Identifier: GPL-2.0-or-later
0005 */
0006
0007 #include "milkyway.h"
0008
0009 #include "ksfilereader.h"
0010 #include "kstarsdata.h"
0011 #ifdef KSTARS_LITE
0012 #include "skymaplite.h"
0013 #else
0014 #include "skymap.h"
0015 #endif
0016 #include "Options.h"
0017 #include "skypainter.h"
0018 #include "skycomponents/skiphashlist.h"
0019
0020 #include <QtConcurrent>
0021
0022 MilkyWay::MilkyWay(SkyComposite *parent) : LineListIndex(parent, i18n("Milky Way"))
0023 {
0024     intro();
0025     // Milky way
0026     //loadContours("milkyway.dat", i18n("Loading Milky Way"));
0027     // Magellanic clouds
0028     //loadContours("lmc.dat", i18n("Loading Large Magellanic Clouds"));
0029     //loadContours("smc.dat", i18n("Loading Small Magellanic Clouds"));
0030     //summary();
0031
0032     QtConcurrent::run(this, &MilkyWay::loadContours, QString("milkyway.dat"), i18n("Loading Milky Way"));
0033     QtConcurrent::run(this, &MilkyWay::loadContours, QString("lmc.dat"), i18n("Loading Large Magellanic Clouds"));
0034     QtConcurrent::run(this, &MilkyWay::loadContours, QString("smc.dat"), i18n("Loading Small Magellanic Clouds"));
0035 }
0036
0037 const IndexHash &MilkyWay::getIndexHash(LineList *lineList)
0038 {
0039     SkipHashList *skipList = dynamic_cast<SkipHashList *>(lineList);
0040     return skyMesh()->indexLine(skipList->points(), skipList->skipHash());
0041 }
0042
0043 SkipHashList *MilkyWay::skipList(LineList *lineList)
0044 {
0045     return dynamic_cast<SkipHashList *>(lineList);
0046 }
0047
0048 bool MilkyWay::selected()
0049 {
0050 #ifndef KSTARS_LITE
0051     return Options::showMilkyWay() && !(Options::hideOnSlew() && Options::hideMilkyWay() && SkyMap::IsSlewing());
0052 #else
0053     return Options::showMilkyWay() && !(Options::hideOnSlew() && Options::hideMilkyWay() && SkyMapLite::IsSlewing());
0054 #endif
0055 }
0056
0057 void MilkyWay::draw(SkyPainter *skyp)
0058 {
0059     if (!selected())
0060         return;
0061
0062     QColor color = KStarsData::Instance()->colorScheme()->colorNamed("MWColor");
0063     skyp->setPen(QPen(color, 3, Qt::SolidLine));
0064     skyp->setBrush(QBrush(color));
0065
0066     if (Options::fillMilkyWay())
0067     {
0068         drawFilled(skyp);
0069     }
0070     else
0071     {
0072         drawLines(skyp);
0073     }
0074 }
0075
0076 void MilkyWay::loadContours(QString fname, QString greeting)
0077 {
0078     KSFileReader fileReader;
0079     std::shared_ptr<LineList> skipList;
0080     int iSkip = 0;
0081
0082     if (!fileReader.open(fname))
0083         return;
0084
0085     fileReader.setProgress(greeting, 2136, 5);
0086     while (fileReader.hasMoreLines())
0087     {
0088         QString line = fileReader.readLine();
0089         QChar firstChar = line.at(0);
0090
0091         fileReader.showProgress();
0092         if (firstChar == '#')
0093             continue;
0094
0095         bool okRA = false, okDec = false;
0096         double ra  = line.midRef(2, 8).toDouble(&okRA);
0097         double dec = line.midRef(11, 8).toDouble(&okDec);
0098
0099         if (!okRA || !okDec)
0100         {
0101             qDebug() << Q_FUNC_INFO << QString("%1: conversion error on line: %2\n").arg(fname).arg(fileReader.lineNumber());
0102             continue;
0103         }
0104
0105         if (firstChar == 'M')
0106         {
0107             if (skipList.get())
0108                 appendBoth(skipList);
0109             skipList.reset();
0110             iSkip    = 0;
0111         }
0112
0113         if (!skipList.get())
0114             skipList.reset(new SkipHashList());
0115
0116         std::shared_ptr<SkyPoint> point(new SkyPoint(ra, dec));
0117
0118         skipList->append(std::move(point));
0119         if (firstChar == 'S')
0120             static_cast<SkipHashList*>(skipList.get())->setSkip(iSkip);
0121
0122         iSkip++;
0123     }
0124     if (skipList.get())
0125         appendBoth(skipList);
0126 }