3996069357

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github

Committed by Ruslan Kabatsayev

Commit Message

Shorten some lines

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0.0

/src/core/modules/SolarSystem.cpp

/*
 * Stellarium
 * Copyright (C) 2002 Fabien Chereau
 * Copyright (C) 2010 Bogdan Marinov
 * Copyright (C) 2011 Alexander Wolf
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
 */

#include "SolarSystem.hpp"
#include "StelTexture.hpp"
#include "EphemWrapper.hpp"
#include "Orbit.hpp"

#include "StelProjector.hpp"
#include "StelApp.hpp"
#include "StelCore.hpp"
#include "StelTextureMgr.hpp"
#include "StelObjectMgr.hpp"
#include "StelLocaleMgr.hpp"
#include "StelSkyCultureMgr.hpp"
#include "StelFileMgr.hpp"
#include "StelModuleMgr.hpp"
#include "StelIniParser.hpp"
#include "Planet.hpp"
#include "MinorPlanet.hpp"
#include "Comet.hpp"
#include "StelMainView.hpp"

#include "StelSkyDrawer.hpp"
#include "StelUtils.hpp"
#include "StelPainter.hpp"
#include "TrailGroup.hpp"

#include "AstroCalcDialog.hpp"
#include "StelObserver.hpp"

#include <algorithm>

#include <QTextStream>
#include <QSettings>
#include <QVariant>
#include <QString>
#include <QStringList>
#include <QMap>
#include <QMultiMap>
#include <QMapIterator>
#include <QDebug>
#include <QDir>
#include <QHash>

SolarSystem::SolarSystem() : StelObjectModule()
        , shadowPlanetCount(0)
        , earthShadowEnlargementDanjon(false)
        , flagMoonScale(false)
        , moonScale(1.0)
        , flagMinorBodyScale(false)
        , minorBodyScale(1.0)
        , flagPlanetScale(false)
        , planetScale(1.0)
        , flagSunScale(false)
        , sunScale(1.0)
        , labelsAmount(false)
        , flagPermanentSolarCorona(true)
        , flagOrbits(false)
        , flagLightTravelTime(true)
        , flagUseObjModels(false)
        , flagShowObjSelfShadows(true)
        , flagShow(false)
        , flagPointer(false)
        , flagNativePlanetNames(false)
        , flagIsolatedTrails(true)
        , numberIsolatedTrails(0)
        , maxTrailPoints(5000)
        , maxTrailTimeExtent(1)
        , trailsThickness(1)
        , flagIsolatedOrbits(true)
        , flagPlanetsOrbitsOnly(false)
        , ephemerisMarkersDisplayed(true)
        , ephemerisDatesDisplayed(false)
        , ephemerisMagnitudesDisplayed(false)
        , ephemerisHorizontalCoordinates(false)
        , ephemerisLineDisplayed(false)
        , ephemerisAlwaysOn(false)
        , ephemerisLineThickness(1)
        , ephemerisSkipDataDisplayed(false)
        , ephemerisSkipMarkersDisplayed(false)
        , ephemerisDataStep(1)
        , ephemerisDataLimit(1)
        , ephemerisSmartDatesDisplayed(true)
        , ephemerisScaleMarkersDisplayed(false)
        , ephemerisGenericMarkerColor(Vec3f(1.0f, 1.0f, 0.0f))
        , ephemerisSecondaryMarkerColor(Vec3f(0.7f, 0.7f, 1.0f))
        , ephemerisSelectedMarkerColor(Vec3f(1.0f, 0.7f, 0.0f))
        , ephemerisMercuryMarkerColor(Vec3f(1.0f, 1.0f, 0.0f))
        , ephemerisVenusMarkerColor(Vec3f(1.0f, 1.0f, 1.0f))
        , ephemerisMarsMarkerColor(Vec3f(1.0f, 0.0f, 0.0f))
        , ephemerisJupiterMarkerColor(Vec3f(0.3f, 1.0f, 1.0f))
        , ephemerisSaturnMarkerColor(Vec3f(0.0f, 1.0f, 0.0f))
        , allTrails(Q_NULLPTR)
        , conf(StelApp::getInstance().getSettings())
{
        planetNameFont.setPixelSize(StelApp::getInstance().getScreenFontSize());
        connect(&StelApp::getInstance(), SIGNAL(screenFontSizeChanged(int)), this, SLOT(setFontSize(int)));
        setObjectName("SolarSystem");
}

void SolarSystem::setFontSize(int newFontSize)
{
        planetNameFont.setPixelSize(newFontSize);
}

SolarSystem::~SolarSystem()
{
        // release selected:
        selected.clear();
        selectedSSO.clear();
        for (auto* orb : qAsConst(orbits))
        {
                delete orb;
                orb = Q_NULLPTR;
        }
        sun.clear();
        moon.clear();
        earth.clear();
        Planet::hintCircleTex.clear();
        Planet::texEarthShadow.clear();

        texEphemerisMarker.clear();
        texEphemerisCometMarker.clear();
        texPointer.clear();

        delete allTrails;
        allTrails = Q_NULLPTR;

        // Get rid of circular reference between the shared pointers which prevent proper destruction of the Planet objects.
        for (const auto& p : qAsConst(systemPlanets))
        {
                p->satellites.clear();
        }

        //delete comet textures created in loadPlanets
        Comet::comaTexture.clear();
        Comet::tailTexture.clear();

        //deinit of SolarSystem is NOT called at app end automatically
        SolarSystem::deinit();
}

/*************************************************************************
 Re-implementation of the getCallOrder method
*************************************************************************/
double SolarSystem::getCallOrder(StelModuleActionName actionName) const
{
        if (actionName==StelModule::ActionDraw)
                return StelApp::getInstance().getModuleMgr().getModule("StarMgr")->getCallOrder(actionName)+10;
        return 0;
}

// Init and load the solar system data
void SolarSystem::init()
{
        Q_ASSERT(conf);

        Planet::init();
        loadPlanets();        // Load planets data

        // Compute position and matrix of sun and all the satellites (ie planets)
        // for the first initialization Q_ASSERT that center is sun center (only impacts on light speed correction)        
        computePositions(StelApp::getInstance().getCore()->getJDE(), getSun());

        setSelected("");        // Fix a bug on macosX! Thanks Fumio!
        setFlagDrawMoonHalo(conf->value("viewing/flag_draw_moon_halo", true).toBool());
        setFlagDrawSunHalo(conf->value("viewing/flag_draw_sun_halo", true).toBool());
        setFlagMoonScale(conf->value("viewing/flag_moon_scaled", conf->value("viewing/flag_init_moon_scaled", false).toBool()).toBool());  // name change
        setMoonScale(conf->value("viewing/moon_scale", 4.0).toDouble());
        setMinorBodyScale(conf->value("viewing/minorbodies_scale", 10.0).toDouble());
        setFlagMinorBodyScale(conf->value("viewing/flag_minorbodies_scaled", false).toBool());
        setFlagPlanetScale(conf->value("viewing/flag_planets_scaled", false).toBool());
        setPlanetScale(conf->value("viewing/planets_scale", 150.0).toDouble());
        setFlagSunScale(conf->value("viewing/flag_sun_scaled", false).toBool());
        setSunScale(conf->value("viewing/sun_scale", 4.0).toDouble());
        setFlagPlanets(conf->value("astro/flag_planets").toBool());
        setFlagHints(conf->value("astro/flag_planets_hints").toBool());
        setFlagLabels(conf->value("astro/flag_planets_labels", true).toBool());
        setLabelsAmount(conf->value("astro/labels_amount", 3.).toDouble());
        setFlagOrbits(conf->value("astro/flag_planets_orbits").toBool());
        setFlagLightTravelTime(conf->value("astro/flag_light_travel_time", true).toBool());
        setFlagUseObjModels(conf->value("astro/flag_use_obj_models", false).toBool());
        setFlagShowObjSelfShadows(conf->value("astro/flag_show_obj_self_shadows", true).toBool());
        setFlagPointer(conf->value("astro/flag_planets_pointers", true).toBool());
        // Set the algorithm from Astronomical Almanac for computation of apparent magnitudes for
        // planets in case  observer on the Earth by default
        setApparentMagnitudeAlgorithmOnEarth(conf->value("astro/apparent_magnitude_algorithm", "Mallama2018").toString());
        setFlagNativePlanetNames(conf->value("viewing/flag_planets_native_names", true).toBool());
        // Is enabled the showing of isolated trails for selected objects only?
        setFlagIsolatedTrails(conf->value("viewing/flag_isolated_trails", true).toBool());
        setNumberIsolatedTrails(conf->value("viewing/number_isolated_trails", 1).toInt());
        setMaxTrailPoints(conf->value("viewing/max_trail_points", 5000).toInt());
        setMaxTrailTimeExtent(conf->value("viewing/max_trail_time_extent", 1).toInt());
        setFlagIsolatedOrbits(conf->value("viewing/flag_isolated_orbits", true).toBool());
        setFlagPlanetsOrbitsOnly(conf->value("viewing/flag_planets_orbits_only", false).toBool());
        setFlagPermanentOrbits(conf->value("astro/flag_permanent_orbits", false).toBool());
        setOrbitColorStyle(conf->value("astro/planets_orbits_color_style", "one_color").toString());

        // Settings for calculation of position of Great Red Spot on Jupiter
        setGrsLongitude(conf->value("astro/grs_longitude", 216).toInt());
        setGrsDrift(conf->value("astro/grs_drift", 15.).toDouble());
        setGrsJD(conf->value("astro/grs_jd", 2456901.5).toDouble());

        setFlagEarthShadowEnlargementDanjon(conf->value("astro/shadow_enlargement_danjon", false).toBool());
        setFlagPermanentSolarCorona(conf->value("viewing/flag_draw_sun_corona", true).toBool());

        // Load colors from config file
        QString defaultColor = conf->value("color/default_color").toString();
        setLabelsColor(                    Vec3f(conf->value("color/planet_names_color", defaultColor).toString()));
        setOrbitsColor(                    Vec3f(conf->value("color/sso_orbits_color", defaultColor).toString()));
        setMajorPlanetsOrbitsColor(        Vec3f(conf->value("color/major_planet_orbits_color", "0.7,0.2,0.2").toString()));
        setMoonsOrbitsColor(               Vec3f(conf->value("color/moon_orbits_color", "0.7,0.2,0.2").toString()));
        setMinorPlanetsOrbitsColor(        Vec3f(conf->value("color/minor_planet_orbits_color", "0.7,0.5,0.5").toString()));
        setDwarfPlanetsOrbitsColor(        Vec3f(conf->value("color/dwarf_planet_orbits_color", "0.7,0.5,0.5").toString()));
        setCubewanosOrbitsColor(           Vec3f(conf->value("color/cubewano_orbits_color", "0.7,0.5,0.5").toString()));
        setPlutinosOrbitsColor(            Vec3f(conf->value("color/plutino_orbits_color", "0.7,0.5,0.5").toString()));
        setScatteredDiskObjectsOrbitsColor(Vec3f(conf->value("color/sdo_orbits_color", "0.7,0.5,0.5").toString()));
        setOortCloudObjectsOrbitsColor(    Vec3f(conf->value("color/oco_orbits_color", "0.7,0.5,0.5").toString()));
        setCometsOrbitsColor(              Vec3f(conf->value("color/comet_orbits_color", "0.7,0.8,0.8").toString()));
        setSednoidsOrbitsColor(            Vec3f(conf->value("color/sednoid_orbits_color", "0.7,0.5,0.5").toString()));
        setInterstellarOrbitsColor(        Vec3f(conf->value("color/interstellar_orbits_color", "1.0,0.6,1.0").toString()));
        setMercuryOrbitColor(              Vec3f(conf->value("color/mercury_orbit_color", "0.5,0.5,0.5").toString()));
        setVenusOrbitColor(                Vec3f(conf->value("color/venus_orbit_color", "0.9,0.9,0.7").toString()));
        setEarthOrbitColor(                Vec3f(conf->value("color/earth_orbit_color", "0.0,0.0,1.0").toString()));
        setMarsOrbitColor(                 Vec3f(conf->value("color/mars_orbit_color", "0.8,0.4,0.1").toString()));
        setJupiterOrbitColor(              Vec3f(conf->value("color/jupiter_orbit_color", "1.0,0.6,0.0").toString()));
        setSaturnOrbitColor(               Vec3f(conf->value("color/saturn_orbit_color", "1.0,0.8,0.0").toString()));
        setUranusOrbitColor(               Vec3f(conf->value("color/uranus_orbit_color", "0.0,0.7,1.0").toString()));
        setNeptuneOrbitColor(              Vec3f(conf->value("color/neptune_orbit_color", "0.0,0.3,1.0").toString()));
        setTrailsColor(                    Vec3f(conf->value("color/object_trails_color", defaultColor).toString()));
        setPointerColor(                   Vec3f(conf->value("color/planet_pointers_color", "1.0,0.3,0.3").toString()));

        // Ephemeris stuff
        setFlagEphemerisMarkers(conf->value("astrocalc/flag_ephemeris_markers", true).toBool());
        setFlagEphemerisAlwaysOn(conf->value("astrocalc/flag_ephemeris_alwayson", true).toBool());
        setFlagEphemerisDates(conf->value("astrocalc/flag_ephemeris_dates", false).toBool());
        setFlagEphemerisMagnitudes(conf->value("astrocalc/flag_ephemeris_magnitudes", false).toBool());
        setFlagEphemerisHorizontalCoordinates(conf->value("astrocalc/flag_ephemeris_horizontal", false).toBool());
        setFlagEphemerisLine(conf->value("astrocalc/flag_ephemeris_line", false).toBool());
        setEphemerisLineThickness(conf->value("astrocalc/ephemeris_line_thickness", 1).toInt());
        setFlagEphemerisSkipData(conf->value("astrocalc/flag_ephemeris_skip_data", false).toBool());
        setFlagEphemerisSkipMarkers(conf->value("astrocalc/flag_ephemeris_skip_markers", false).toBool());
        setEphemerisDataStep(conf->value("astrocalc/ephemeris_data_step", 1).toInt());        
        setFlagEphemerisSmartDates(conf->value("astrocalc/flag_ephemeris_smart_dates", true).toBool());
        setFlagEphemerisScaleMarkers(conf->value("astrocalc/flag_ephemeris_scale_markers", false).toBool());
        setEphemerisGenericMarkerColor( Vec3f(conf->value("color/ephemeris_generic_marker_color", "1.0,1.0,0.0").toString()));
        setEphemerisSecondaryMarkerColor( Vec3f(conf->value("color/ephemeris_secondary_marker_color", "0.7,0.7,1.0").toString()));
        setEphemerisSelectedMarkerColor(Vec3f(conf->value("color/ephemeris_selected_marker_color", "1.0,0.7,0.0").toString()));
        setEphemerisMercuryMarkerColor( Vec3f(conf->value("color/ephemeris_mercury_marker_color", "1.0,1.0,0.0").toString()));
        setEphemerisVenusMarkerColor(   Vec3f(conf->value("color/ephemeris_venus_marker_color", "1.0,1.0,1.0").toString()));
        setEphemerisMarsMarkerColor(    Vec3f(conf->value("color/ephemeris_mars_marker_color", "1.0,0.0,0.0").toString()));
        setEphemerisJupiterMarkerColor( Vec3f(conf->value("color/ephemeris_jupiter_marker_color", "0.3,1.0,1.0").toString()));
        setEphemerisSaturnMarkerColor(  Vec3f(conf->value("color/ephemeris_saturn_marker_color", "0.0,1.0,0.0").toString()));

        setOrbitsThickness(conf->value("astro/object_orbits_thickness", 1).toBool());
        setTrailsThickness(conf->value("astro/object_trails_thickness", 1).toBool());
        recreateTrails();
        setFlagTrails(conf->value("astro/flag_object_trails", false).toBool());

        StelObjectMgr *objectManager = GETSTELMODULE(StelObjectMgr);
        objectManager->registerStelObjectMgr(this);
        connect(objectManager, SIGNAL(selectedObjectChanged(StelModule::StelModuleSelectAction)),
                this, SLOT(selectedObjectChange(StelModule::StelModuleSelectAction)));

        texPointer = StelApp::getInstance().getTextureManager().createTexture(StelFileMgr::getInstallationDir()+"/textures/pointeur4.png");
        texEphemerisMarker = StelApp::getInstance().getTextureManager().createTexture(StelFileMgr::getInstallationDir()+"/textures/disk.png");
        texEphemerisCometMarker = StelApp::getInstance().getTextureManager().createTexture(StelFileMgr::getInstallationDir()+"/textures/cometIcon.png");
        Planet::hintCircleTex = StelApp::getInstance().getTextureManager().createTexture(StelFileMgr::getInstallationDir()+"/textures/planet-indicator.png");
        
        StelApp *app = &StelApp::getInstance();
        connect(app, SIGNAL(languageChanged()), this, SLOT(updateI18n()));
        connect(&app->getSkyCultureMgr(), SIGNAL(currentSkyCultureChanged(QString)), this, SLOT(updateSkyCulture(QString)));
        connect(&StelMainView::getInstance(), SIGNAL(reloadShadersRequested()), this, SLOT(reloadShaders()));
        StelCore *core = app->getCore();
        connect(core, SIGNAL(locationChanged(StelLocation)), this, SLOT(recreateTrails()));
        connect(core, SIGNAL(dateChangedForTrails()), this, SLOT(recreateTrails()));

        QString displayGroup = N_("Display Options");
        addAction("actionShow_Planets", displayGroup, N_("Planets"), "planetsDisplayed", "P");
        addAction("actionShow_Planets_Labels", displayGroup, N_("Planet labels"), "labelsDisplayed", "Alt+P");
        addAction("actionShow_Planets_Orbits", displayGroup, N_("Planet orbits"), "flagOrbits", "O");
        addAction("actionShow_Planets_Trails", displayGroup, N_("Planet trails"), "trailsDisplayed", "Shift+T");
        addAction("actionShow_Planets_Trails_Reset", displayGroup, N_("Planet trails reset"), "recreateTrails()"); // No hotkey predefined.
        //there is a small discrepancy in the GUI: "Show planet markers" actually means show planet hints
        addAction("actionShow_Planets_Hints", displayGroup, N_("Planet markers"), "flagHints", "Ctrl+P");
        addAction("actionShow_Planets_Pointers", displayGroup, N_("Planet selection marker"), "flagPointer", "Ctrl+Shift+P");
        addAction("actionShow_Planets_EnlargeMoon", displayGroup, N_("Enlarge Moon"), "flagMoonScale");
        addAction("actionShow_Planets_EnlargeMinor", displayGroup, N_("Enlarge minor bodies"), "flagMinorBodyScale");
        addAction("actionShow_Planets_EnlargePlanets", displayGroup, N_("Enlarge Planets"), "flagPlanetScale");
        addAction("actionShow_Planets_EnlargeSun", displayGroup, N_("Enlarge Sun"), "flagSunScale");
        addAction("actionShow_Skyculture_NativePlanetNames", displayGroup, N_("Native planet names (from starlore)"), "flagNativePlanetNames", "Ctrl+Shift+N");

        connect(StelApp::getInstance().getModule("HipsMgr"), SIGNAL(gotNewSurvey(HipsSurveyP)),
                        this, SLOT(onNewSurvey(HipsSurveyP)));

        // Fill ephemeris dates
        connect(this, SIGNAL(requestEphemerisVisualization()), this, SLOT(fillEphemerisDates()));
        connect(this, SIGNAL(ephemerisDataStepChanged(int)), this, SLOT(fillEphemerisDates()));
        connect(this, SIGNAL(ephemerisSkipDataChanged(bool)), this, SLOT(fillEphemerisDates()));
        connect(this, SIGNAL(ephemerisSkipMarkersChanged(bool)), this, SLOT(fillEphemerisDates()));
        connect(this, SIGNAL(ephemerisSmartDatesChanged(bool)), this, SLOT(fillEphemerisDates()));
}

void SolarSystem::deinit()
{
        Planet::deinitShader();
        Planet::deinitFBO();
}

void SolarSystem::resetTextures(const QString &planetName)
{
        if (planetName.isEmpty())
        {
                for (const auto& p : qAsConst(systemPlanets))
                {
                        p->resetTextures();
                }
        }
        else
        {
                PlanetP planet = searchByEnglishName(planetName);
                if (!planet.isNull())
                        planet->resetTextures();
        }
}

void SolarSystem::setTextureForPlanet(const QString& planetName, const QString& texName)
{
        PlanetP planet = searchByEnglishName(planetName);
        if (!planet.isNull())
                planet->replaceTexture(texName);
        else
                qWarning() << "The planet" << planetName << "was not found. Please check the name.";
}

void SolarSystem::recreateTrails()
{
        // Create a trail group containing all the planets orbiting the sun (not including satellites)
        if (allTrails!=Q_NULLPTR)
                delete allTrails;
        allTrails = new TrailGroup(maxTrailTimeExtent * 365.f, maxTrailPoints);

        unsigned long cnt = static_cast<unsigned long>(selectedSSO.size());
        if (cnt>0 && getFlagIsolatedTrails())
        {
                unsigned long limit = static_cast<unsigned long>(getNumberIsolatedTrails());
                if (cnt<limit)
                        limit = cnt;
                for (unsigned long i=0; i<limit; i++)
                {
                        if (selectedSSO[cnt - i - 1]->getPlanetType() != Planet::isObserver)
                                allTrails->addObject(static_cast<QSharedPointer<StelObject>>(selectedSSO[cnt - i - 1]), &trailsColor);
                }
        }
        else
        {
                for (const auto& p : qAsConst(getSun()->satellites))
                {
                        if (p->getPlanetType() != Planet::isObserver)
                                allTrails->addObject(static_cast<QSharedPointer<StelObject>>(p), &trailsColor);
                }
                // Add moons of current planet
                StelCore *core=StelApp::getInstance().getCore();
                const StelObserver *obs=core->getCurrentObserver();
                if (obs)
                {
                        const QSharedPointer<Planet> planet=obs->getHomePlanet();
                        for (const auto& m : qAsConst(planet->satellites))
                                if (m->getPlanetType() != Planet::isObserver)
                                        allTrails->addObject(static_cast<QSharedPointer<StelObject>>(m), &trailsColor);
                }
        }
}


void SolarSystem::updateSkyCulture(const QString& skyCultureDir)
{
        planetNativeNamesMap.clear();
        planetNativeNamesMeaningMap.clear();

        QString namesFile = StelFileMgr::findFile("skycultures/" + skyCultureDir + "/planet_names.fab");

        if (namesFile.isEmpty())
        {
                for (const auto& p : qAsConst(systemPlanets))
                {
                        if (p->getPlanetType()==Planet::isPlanet || p->getPlanetType()==Planet::isMoon || p->getPlanetType()==Planet::isStar)
                        {
                                p->setNativeName("");
                                p->setNativeNameMeaning("");
                        }
                }
                updateI18n();
                return;
        }

        // Open file
        QFile planetNamesFile(namesFile);
        if (!planetNamesFile.open(QIODevice::ReadOnly | QIODevice::Text))
        {
                qDebug() << " Cannot open file" << QDir::toNativeSeparators(namesFile);
                return;
        }

        // Now parse the file
        // lines to ignore which start with a # or are empty
        static const QRegularExpression commentRx("^(\\s*#.*|\\s*)$");

        // lines which look like records - we use the RE to extract the fields
        // which will be available in recRx.capturedTexts()
        static const QRegularExpression recRx("^\\s*(\\w+)\\s+\"(.+)\"\\s+_[(]\"(.+)\"[)]\\n");

        QString record, planetId, nativeName, nativeNameMeaning;

        // keep track of how many records we processed.
        int totalRecords=0;
        int readOk=0;
        int lineNumber=0;
        while (!planetNamesFile.atEnd())
        {
                record = QString::fromUtf8(planetNamesFile.readLine());
                lineNumber++;

                // Skip comments
                if (commentRx.match(record).hasMatch())
                        continue;

                totalRecords++;

                QRegularExpressionMatch match=recRx.match(record);
                if (!match.hasMatch())
                {
                        qWarning() << "ERROR - cannot parse record at line" << lineNumber << "in planet names file" << QDir::toNativeSeparators(namesFile);
                }
                else
                {
                        planetId          = match.captured(1).trimmed();
                        nativeName        = match.captured(2).trimmed();
                        nativeNameMeaning = match.captured(3).trimmed();
                        planetNativeNamesMap[planetId] = nativeName;
                        planetNativeNamesMeaningMap[planetId] = nativeNameMeaning;
                        readOk++;
                }
        }
        planetNamesFile.close();
        qDebug() << "Loaded" << readOk << "/" << totalRecords << "native names of planets";

        for (const auto& p : qAsConst(systemPlanets))
        {
                if (p->getPlanetType()==Planet::isPlanet || p->getPlanetType()==Planet::isMoon || p->getPlanetType()==Planet::isStar)
                {
                        p->setNativeName(planetNativeNamesMap[p->getEnglishName()]);
                        p->setNativeNameMeaning(planetNativeNamesMeaningMap[p->getEnglishName()]);
                }
        }

        updateI18n();
}

void SolarSystem::reloadShaders()
{
        Planet::deinitShader();
        Planet::initShader();
}

void SolarSystem::drawPointer(const StelCore* core)
{
        const StelProjectorP prj = core->getProjection(StelCore::FrameJ2000);

        const QList<StelObjectP> newSelected = GETSTELMODULE(StelObjectMgr)->getSelectedObject("Planet");
        if (!newSelected.empty())
        {
                const StelObjectP obj = newSelected[0];
                Vec3d pos=obj->getJ2000EquatorialPos(core);

                Vec3f screenpos;
                // Compute 2D pos and return if outside screen
                if (!prj->project(pos, screenpos))
                        return;

                StelPainter sPainter(prj);
                sPainter.setColor(getPointerColor());

                float screenSize = static_cast<float>(obj->getAngularRadius(core))*prj->getPixelPerRadAtCenter()*M_PI_180f*2.f;
                
                const float scale = static_cast<float>(prj->getDevicePixelsPerPixel())*StelApp::getInstance().getGlobalScalingRatio();
                screenSize+= scale * (45.f + 10.f*std::sin(2.f * static_cast<float>(StelApp::getInstance().getAnimationTime())));

                texPointer->bind();

                sPainter.setBlending(true);

                screenSize*=0.5f;
                const float angleBase = static_cast<float>(StelApp::getInstance().getAnimationTime()) * 10;
                // We draw 4 instances of the sprite at the corners of the pointer
                for (int i = 0; i < 4; ++i)
                {
                        const float angle = angleBase + i * 90;
                        const float x = screenpos[0] + screenSize * cos(angle * M_PI_180f);
                        const float y = screenpos[1] + screenSize * sin(angle * M_PI_180f);
                        sPainter.drawSprite2dMode(x, y, 10, angle);
                }
        }
}

void keplerOrbitPosFunc(double jd,double xyz[3], double xyzdot[3], void* orbitPtr)
{
        static_cast<KeplerOrbit*>(orbitPtr)->positionAtTimevInVSOP87Coordinates(jd, xyz);
        static_cast<KeplerOrbit*>(orbitPtr)->getVelocity(xyzdot);
}

void gimbalOrbitPosFunc(double jd,double xyz[3], double xyzdot[3], void* orbitPtr)
{
        static_cast<GimbalOrbit*>(orbitPtr)->positionAtTimevInVSOP87Coordinates(jd, xyz);
        static_cast<GimbalOrbit*>(orbitPtr)->getVelocity(xyzdot);
}

// Init and load the solar system data (2 files)
void SolarSystem::loadPlanets()
{
        minorBodies.clear();
        systemMinorBodies.clear();
        qDebug() << "Loading Solar System data (1: planets and moons) ...";
        QString solarSystemFile = StelFileMgr::findFile("data/ssystem_major.ini");
        if (solarSystemFile.isEmpty())
        {
                qWarning() << "ERROR while loading ssystem_major.ini (unable to find data/ssystem_major.ini): " << StelUtils::getEndLineChar();
                return;
        }

        if (!loadPlanets(solarSystemFile))
        {
                qWarning() << "ERROR while loading ssystem_major.ini: " << StelUtils::getEndLineChar();
                return;
        }

        qDebug() << "Loading Solar System data (2: minor bodies)...";
        QStringList solarSystemFiles = StelFileMgr::findFileInAllPaths("data/ssystem_minor.ini");
        if (solarSystemFiles.isEmpty())
        {
                qWarning() << "ERROR while loading ssystem_minor.ini (unable to find data/ssystem_minor.ini): " << StelUtils::getEndLineChar();
                return;
        }

        for (const auto& solarSystemFile : qAsConst(solarSystemFiles))
        {
                if (loadPlanets(solarSystemFile))
                {
                        qDebug() << "File ssystem_minor.ini is loaded successfully...";
                        break;
                }
                else
                {
//                        sun.clear();
//                        moon.clear();
//                        earth.clear();
                        //qCritical() << "We should not be here!";

                        qDebug() << "Removing minor bodies";
                        for (const auto& p : qAsConst(systemPlanets))
                        {
                                // We can only delete minor objects now!
                                if (p->pType >= Planet::isAsteroid)
                                {
                                        p->satellites.clear();
                                }
                        }                        
                        systemPlanets.clear();                        
                        //Memory leak? What's the proper way of cleaning shared pointers?

                        // TODO: 0.16pre what about the orbits list?

                        //If the file is in the user data directory, rename it:
                        if (solarSystemFile.contains(StelFileMgr::getUserDir()))
                        {
                                QString newName = QString("%1/data/ssystem_minor-%2.ini").arg(StelFileMgr::getUserDir(), QDateTime::currentDateTime().toString("yyyyMMddThhmmss"));
                                if (QFile::rename(solarSystemFile, newName))
                                        qWarning() << "Invalid Solar System file" << QDir::toNativeSeparators(solarSystemFile) << "has been renamed to" << QDir::toNativeSeparators(newName);
                                else
                                {
                                        qWarning() << "Invalid Solar System file" << QDir::toNativeSeparators(solarSystemFile) << "cannot be removed!";
                                        qWarning() << "Please either delete it, rename it or move it elsewhere.";
                                }
                        }
                }
        }

        shadowPlanetCount = 0;

        for (const auto& planet : qAsConst(systemPlanets))
                if(planet->parent != sun || !planet->satellites.isEmpty())
                        shadowPlanetCount++;
}

unsigned char SolarSystem::BvToColorIndex(double bV)
{
        const double dBV = qBound(-500., static_cast<double>(bV)*1000.0, 3499.);
        return static_cast<unsigned char>(floor(0.5+127.0*((500.0+dBV)/4000.0)));
}

bool SolarSystem::loadPlanets(const QString& filePath)
{
        StelSkyDrawer* skyDrawer = StelApp::getInstance().getCore()->getSkyDrawer();
        qDebug() << "Loading from :"  << filePath;
        QSettings pd(filePath, StelIniFormat);
        if (pd.status() != QSettings::NoError)
        {
                qWarning() << "ERROR while parsing" << QDir::toNativeSeparators(filePath);
                return false;
        }

        // QSettings does not allow us to say that the sections of the file
        // will be listed in the same order  as in the file like the old
        // InitParser used to so we can no longer assume that.
        //
        // This means we must first decide what order to read the sections
        // of the file in (each section contains one planet/moon/asteroid/comet/...) to avoid setting
        // the parent Planet* to one which has not yet been created.
        //
        // Stage 1: Make a map of body names back to the section names
        // which they come from. Also make a map of body name to parent body
        // name. These two maps can be made in a single pass through the
        // sections of the file.
        //
        // Stage 2: Make an ordered list of section names such that each
        // item is only ever dependent on items which appear earlier in the
        // list.
        // 2a: Make a QMultiMap relating the number of levels of dependency
        //     to the body name, i.e.
        //     0 -> Sun
        //     1 -> Mercury
        //     1 -> Venus
        //     1 -> Earth
        //     2 -> Moon
        //     etc.
        // 2b: Populate an ordered list of section names by iterating over
        //     the QMultiMap.  This type of container is always sorted on the
        //     key in ascending order, so it's easy.
        //     i.e. [sun, earth, moon] is fine, but not [sun, moon, earth]
        //
        // Stage 3: iterate over the ordered sections decided in stage 2,
        // creating the planet objects from the QSettings data.

        // Stage 1 (as described above).
        QMap<QString, QString> secNameMap;
        QMap<QString, QString> parentMap;
        QStringList sections = pd.childGroups();
        // qDebug() << "Stage 1: load ini file with" << sections.size() << "entries: "<< sections;
        for (int i=0; i<sections.size(); ++i)
        {
                const QString secname = sections.at(i);
                const QString englishName = pd.value(secname+"/name").toString();
                const QString strParent = pd.value(secname+"/parent", "Sun").toString();
                secNameMap[englishName] = secname;
                if (strParent!="none" && !strParent.isEmpty() && !englishName.isEmpty())
                {
                        parentMap[englishName] = strParent;
                        // qDebug() << "parentmap[" << englishName << "] = " << strParent;
                }
        }

        // Stage 2a (as described above).
        QMultiMap<int, QString> depLevelMap;
        for (int i=0; i<sections.size(); ++i)
        {
                const QString englishName = pd.value(sections.at(i)+"/name").toString();

                // follow dependencies, incrementing level when we have one
                // till we run out.
                QString p=englishName;
                int level = 0;
                while(parentMap.contains(p) && parentMap[p]!="none")
                {
                        level++;
                        p = parentMap[p];
                }

                depLevelMap.insert(level, secNameMap[englishName]);
                // qDebug() << "2a: Level" << level << "secNameMap[" << englishName << "]="<< secNameMap[englishName];
        }

        // Stage 2b (as described above).
        // qDebug() << "Stage 2b:";
        QStringList orderedSections;
#if (QT_VERSION>=QT_VERSION_CHECK(6,0,0))
        QMultiMapIterator<int, QString> levelMapIt(depLevelMap);
#else
        QMapIterator<int, QString> levelMapIt(depLevelMap);
#endif
        while(levelMapIt.hasNext())
        {
                levelMapIt.next();
                orderedSections << levelMapIt.value();
        }
        // qDebug() << orderedSections;

        // Stage 3 (as described above).
        int readOk=0;
        //int totalPlanets=0;

        // qDebug() << "Adding " << orderedSections.size() << "objects...";
        for (int i = 0;i<orderedSections.size();++i)
        {
                // qDebug() << "Processing entry" << orderedSections.at(i);

                //totalPlanets++;
                const QString secname = orderedSections.at(i);
                const QString englishName = pd.value(secname+"/name").toString().simplified();
                const double bV = pd.value(secname+"/color_index_bv", 99.).toDouble();
                const QString strParent = pd.value(secname+"/parent", "Sun").toString(); // Obvious default, keep file entries simple.
                PlanetP parent;
                if (strParent!="none")
                {
                        // Look in the other planets the one named with strParent
                        for (const auto& p : qAsConst(systemPlanets))
                        {
                                if (p->getEnglishName()==strParent)
                                {
                                        parent = p;
                                        break;
                                }
                        }
                        if (parent.isNull())
                        {
                                qWarning() << "ERROR : can't find parent solar system body for " << englishName << ". Skipping.";
                                //abort();
                                continue;
                        }
                }
                Q_ASSERT(parent || englishName=="Sun");

                const QString coordFuncName = pd.value(secname+"/coord_func", "kepler_orbit").toString(); // 0.20: new default for all non *_special.
                // qDebug() << "englishName:" << englishName << ", parent:" << strParent <<  ", coord_func:" << coordFuncName;
                posFuncType posfunc=Q_NULLPTR;
                Orbit* orbitPtr=Q_NULLPTR;
                OsculatingFunctType *osculatingFunc = Q_NULLPTR;
                bool closeOrbit = true;
                double semi_major_axis=0; // used again below.
                const QString type = pd.value(secname+"/type").toString();


#ifdef USE_GIMBAL_ORBIT
                // undefine the flag in Orbit.h to disable and use the old, static observer solution (on an infinitely slow KeplerOrbit)
                // Note that for now we ignore any orbit-related config values from the ini file.
                if (type=="observer")
                {
                        // Create a pseudo orbit that allows interaction with keyboard
                        GimbalOrbit *orb = new GimbalOrbit(1, 0., 90.);    // [1 AU over north pole]
                        orbits.push_back(orb);

                        orbitPtr = orb;
                        posfunc = &gimbalOrbitPosFunc;
                }
                else
#endif
                if ((coordFuncName=="kepler_orbit") || (coordFuncName=="comet_orbit") || (coordFuncName=="ell_orbit")) // ell_orbit used for planet moons. TBD in V1.0: remove non-kepler_orbit!
                {
                        // ell_orbit was used for planet moons, comet_orbit for minor bodies. The only difference is that pericenter distance for moons is given in km, not AU.
                        // Read the orbital elements                        
                        const double eccentricity = pd.value(secname+"/orbit_Eccentricity", 0.0).toDouble();
                        if (eccentricity >= 1.0) closeOrbit = false;
                        double pericenterDistance = pd.value(secname+"/orbit_PericenterDistance",-1e100).toDouble(); // AU, or km for ell_orbit!
                        if (pericenterDistance <= 0.0) {
                                semi_major_axis = pd.value(secname+"/orbit_SemiMajorAxis",-1e100).toDouble();
                                if (semi_major_axis <= -1e100) {
                                        qDebug() << "ERROR loading " << englishName
                                                 << ": you must provide orbit_PericenterDistance or orbit_SemiMajorAxis. Skipping " << englishName;
                                        continue;
                                } else {
                                        Q_ASSERT(eccentricity != 1.0); // parabolic orbits have no semi_major_axis
                                        pericenterDistance = semi_major_axis * (1.0-eccentricity);
                                }
                        } else {
                                semi_major_axis = (eccentricity == 1.0)
                                                                ? 0.0 // parabolic orbits have no semi_major_axis
                                                                : pericenterDistance / (1.0-eccentricity);
                        }
                        if (strParent!="Sun")
                                pericenterDistance /= AU;  // Planet moons have distances given in km in the .ini file! But all further computation done in AU.

                        double meanMotion = pd.value(secname+"/orbit_MeanMotion",-1e100).toDouble(); // degrees/day
                        if (meanMotion <= -1e100) {
                                const double period = pd.value(secname+"/orbit_Period",-1e100).toDouble();
                                if (period <= -1e100) {
                                        if (parent->getParent()) {
                                                qWarning() << "ERROR: " << englishName
                                                           << ": when the parent body is not the sun, you must provide "
                                                           << "either orbit_MeanMotion or orbit_Period";
                                        } else {
                                                // in case of parent=sun: use Gaussian gravitational constant for calculating meanMotion:
                                                meanMotion = (eccentricity == 1.0)
                                                                        ? 0.01720209895 * (1.5/pericenterDistance) * std::sqrt(0.5/pericenterDistance)  // Heafner: Fund.Eph.Comp. W / dt
                                                                        : 0.01720209895 / (fabs(semi_major_axis)*std::sqrt(fabs(semi_major_axis)));
                                        }
                                } else {
                                        meanMotion = 2.0*M_PI/period;
                                }
                        } else {
                                meanMotion *= (M_PI/180.0);
                        }

                        const double ascending_node = pd.value(secname+"/orbit_AscendingNode", 0.0).toDouble()*(M_PI/180.0);
                        double arg_of_pericenter = pd.value(secname+"/orbit_ArgOfPericenter",-1e100).toDouble();
                        double long_of_pericenter;
                        if (arg_of_pericenter <= -1e100) {
                                long_of_pericenter = pd.value(secname+"/orbit_LongOfPericenter", 0.0).toDouble()*(M_PI/180.0);
                                arg_of_pericenter = long_of_pericenter - ascending_node;
                        } else {
                                arg_of_pericenter *= (M_PI/180.0);
                                long_of_pericenter = arg_of_pericenter + ascending_node;
                        }

                        double time_at_pericenter = pd.value(secname+"/orbit_TimeAtPericenter",-1e100).toDouble();
                        // In earlier times (up to 0.21.2) we did not care much to store orbital epoch for comets but silently assumed T for it in various places.
                        // However, the distinction is relevant to discern element sets for various valid ranges.
                        // Comet orbits epoch should default to T while planets or moons default to J2000.
                        const double epoch = pd.value(secname+"/orbit_Epoch", type=="comet" ? time_at_pericenter : J2000).toDouble();
                        if (time_at_pericenter <= -1e100) {
                                double mean_anomaly = pd.value(secname+"/orbit_MeanAnomaly",-1e100).toDouble()*(M_PI/180.0);
                                if (mean_anomaly <= -1e10) {
                                        double mean_longitude = pd.value(secname+"/orbit_MeanLongitude",-1e100).toDouble()*(M_PI/180.0);
                                        if (mean_longitude <= -1e10) {
                                                qWarning() << "ERROR: " << englishName
                                                           << ": when you do not provide orbit_TimeAtPericenter, you must provide orbit_Epoch"
                                                           << "and either one of orbit_MeanAnomaly or orbit_MeanLongitude. Skipping this object.";
                                                //abort();
                                                continue;
                                        } else {
                                                mean_anomaly = mean_longitude - long_of_pericenter;
                                        }
                                }
                                time_at_pericenter = epoch - mean_anomaly / meanMotion;
                        }

                        static const QMap<QString, double>massMap={ // masses from DE430/431
                                { "Sun",            1.0},
                                { "Mercury",  6023682.155592},
                                { "Venus",     408523.718658},
                                { "Earth",     332946.048834},
                                { "Mars",     3098703.590291},
                                { "Jupiter",     1047.348625},
                                { "Saturn",      3497.901768},
                                { "Uranus",     22902.981613},
                                { "Neptune",    19412.259776},
                                { "Pluto",  135836683.768617}};

                        // Construct orbital elements relative to the parent body. This will construct orbits for J2000 only.
                        // Some planet axes move very slowly, this effect could be modelled by replicating these lines
                        // after recomputing obliquity and node (below) in Planet::computeTransMatrix().
                        // The effect is negligible for several millennia, though.
                        // When the parent is the sun use ecliptic rather than sun equator:
                        const double parentRotObliquity  = parent->getParent() ? parent->getRotObliquity(J2000) : 0.0;
                        const double parent_rot_asc_node = parent->getParent() ? parent->getRotAscendingNode()  : 0.0;
                        double parent_rot_j2000_longitude = 0.0;
                        if (parent->getParent()) {
                                const double c_obl = cos(parentRotObliquity);
                                const double s_obl = sin(parentRotObliquity);
                                const double c_nod = cos(parent_rot_asc_node);
                                const double s_nod = sin(parent_rot_asc_node);
                                const Vec3d OrbitAxis0( c_nod,       s_nod,        0.0);
                                const Vec3d OrbitAxis1(-s_nod*c_obl, c_nod*c_obl,s_obl);
                                const Vec3d OrbitPole(  s_nod*s_obl,-c_nod*s_obl,c_obl);
                                const Vec3d J2000Pole(StelCore::matJ2000ToVsop87.multiplyWithoutTranslation(Vec3d(0,0,1)));
                                Vec3d J2000NodeOrigin(J2000Pole^OrbitPole);
                                J2000NodeOrigin.normalize();
                                parent_rot_j2000_longitude = atan2(J2000NodeOrigin*OrbitAxis1,J2000NodeOrigin*OrbitAxis0);
                        }

                        const double orbitGoodDays=pd.value(secname+"/orbit_good", parent->englishName!="Sun" ? 0. : -1.).toDouble(); // "Moons" have permanently good orbits.
                        const double inclination = pd.value(secname+"/orbit_Inclination", 0.0).toDouble()*(M_PI/180.0);

                        // Create a Keplerian orbit. This has been called CometOrbit before 0.20.
                        //qDebug() << "Creating KeplerOrbit for" << parent->englishName << "---" << englishName;
                        KeplerOrbit *orb = new KeplerOrbit(epoch,                  // JDE
                                                           pericenterDistance,     // [AU]
                                                           eccentricity,           // 0..>1 (>>1 for Interstellar objects)
                                                           inclination,            // [radians]
                                                           ascending_node,         // [radians]
                                                           arg_of_pericenter,      // [radians]
                                                           time_at_pericenter,     // JDE
                                                           orbitGoodDays,          // orbitGoodDays. 0=always good, -1=compute_half_orbit_duration
                                                           meanMotion,             // [radians/day]
                                                           parentRotObliquity,     // [radians]
                                                           parent_rot_asc_node,    // [radians]
                                                           parent_rot_j2000_longitude, // [radians]
                                                           1./massMap.value(parent->englishName, 1.)); // central mass [solar masses]
                        orbits.push_back(orb);

                        orbitPtr = orb;
                        posfunc = &keplerOrbitPosFunc;
                }
                else
                {
                        static const QMap<QString, posFuncType>posfuncMap={
                                { "sun_special",       &get_sun_helio_coordsv},
                                { "mercury_special",   &get_mercury_helio_coordsv},
                                { "venus_special",     &get_venus_helio_coordsv},
                                { "earth_special",     &get_earth_helio_coordsv},
                                { "lunar_special",     &get_lunar_parent_coordsv},
                                { "mars_special",      &get_mars_helio_coordsv},
                                { "phobos_special",    &get_phobos_parent_coordsv},
                                { "deimos_special",    &get_deimos_parent_coordsv},
                                { "jupiter_special",   &get_jupiter_helio_coordsv},
                                { "io_special",        &get_io_parent_coordsv},
                                { "europa_special",    &get_europa_parent_coordsv},
                                { "ganymede_special",  &get_ganymede_parent_coordsv},
                                { "calisto_special",   &get_callisto_parent_coordsv},
                                { "callisto_special",  &get_callisto_parent_coordsv},
                                { "saturn_special",    &get_saturn_helio_coordsv},
                                { "mimas_special",     &get_mimas_parent_coordsv},
                                { "enceladus_special", &get_enceladus_parent_coordsv},
                                { "tethys_special",    &get_tethys_parent_coordsv},
                                { "dione_special",     &get_dione_parent_coordsv},
                                { "rhea_special",      &get_rhea_parent_coordsv},
                                { "titan_special",     &get_titan_parent_coordsv},
                                { "hyperion_special",  &get_hyperion_parent_coordsv},
                                { "iapetus_special",   &get_iapetus_parent_coordsv},
                                { "helene_special",    &get_helene_parent_coordsv},
                                { "telesto_special",   &get_telesto_parent_coordsv},
                                { "calypso_special",   &get_calypso_parent_coordsv},
                                { "uranus_special",    &get_uranus_helio_coordsv},
                                { "miranda_special",   &get_miranda_parent_coordsv},
                                { "ariel_special",     &get_ariel_parent_coordsv},
                                { "umbriel_special",   &get_umbriel_parent_coordsv},
                                { "titania_special",   &get_titania_parent_coordsv},
                                { "oberon_special",    &get_oberon_parent_coordsv},
                                { "neptune_special",   &get_neptune_helio_coordsv},
                                { "pluto_special",     &get_pluto_helio_coordsv}};
                        static const QMap<QString, OsculatingFunctType*>osculatingMap={
                                { "mercury_special",   &get_mercury_helio_osculating_coords},
                                { "venus_special",     &get_venus_helio_osculating_coords},
                                { "earth_special",     &get_earth_helio_osculating_coords},
                                { "mars_special",      &get_mars_helio_osculating_coords},
                                { "jupiter_special",   &get_jupiter_helio_osculating_coords},
                                { "saturn_special",    &get_saturn_helio_osculating_coords},
                                { "uranus_special",    &get_uranus_helio_osculating_coords},
                                { "neptune_special",   &get_neptune_helio_osculating_coords}};
                        posfunc=posfuncMap.value(coordFuncName, Q_NULLPTR);
                        osculatingFunc=osculatingMap.value(coordFuncName, Q_NULLPTR);
                }
                if (posfunc==Q_NULLPTR)
                {
                        qCritical() << "ERROR in section " << secname << ": can't find posfunc " << coordFuncName << " for " << englishName;
                        exit(-1);
                }

                // Create the Solar System body and add it to the list
                //TODO: Refactor the subclass selection to reduce duplicate code mess here,
                // by at least using this base class pointer and using setXXX functions instead of mega-constructors
                // that have to pass most of it on to the Planet class
                PlanetP newP;

                // New class objects, named "plutino", "cubewano", "dwarf planet", "SDO", "OCO", has properties
                // similar to asteroids and we should calculate their positions like for asteroids. Dwarf planets
                // have one exception: Pluto - as long as we use a special function for calculation of Pluto's orbit.
                if ((type == "asteroid" || type == "dwarf planet" || type == "cubewano" || type=="sednoid" || type == "plutino" || type == "scattered disc object" || type == "Oort cloud object" || type == "interstellar object") && !englishName.contains("Pluto"))
                {
                        minorBodies << englishName;

                        Vec3f color = Vec3f(1.f, 1.f, 1.f);
                        if (bV<99.)
                                color = skyDrawer->indexToColor(BvToColorIndex(bV))*0.75f; // see ZoneArray.cpp:L490
                        else
                                color = Vec3f(pd.value(secname+"/color", "1.0,1.0,1.0").toString());

                        const bool hidden = pd.value(secname+"/hidden", false).toBool();
                        const QString normalMapName = ( hidden ? "" : englishName.toLower().append("_normals.png")); // no normal maps for invisible objects!
                        const QString horizonMapName = ( hidden ? "" : englishName.toLower().append("_normals.png")); // no normal maps for invisible objects!

                        newP = PlanetP(new MinorPlanet(englishName,
                                                    pd.value(secname+"/radius", 1.0).toDouble()/AU,
                                                    pd.value(secname+"/oblateness", 0.0).toDouble(),
                                                    color, // halo color
                                                    pd.value(secname+"/albedo", 0.25f).toFloat(),
                                                    pd.value(secname+"/roughness",0.9f).toFloat(),
                                                    pd.value(secname+"/tex_map", "nomap.png").toString(),
                                                    pd.value(secname+"/normals_map", normalMapName).toString(),
                                                    pd.value(secname+"/horizon_map", horizonMapName).toString(),
                                                    pd.value(secname+"/model").toString(),
                                                    posfunc,
                                                    static_cast<KeplerOrbit*>(orbitPtr), // the KeplerOrbit object created previously
                                                    osculatingFunc, // should be Q_NULLPTR
                                                    closeOrbit,
                                                    hidden,
                                                    type));
                        QSharedPointer<MinorPlanet> mp =  newP.dynamicCast<MinorPlanet>();
                        //Number, Provisional designation
                        mp->setMinorPlanetNumber(pd.value(secname+"/minor_planet_number", 0).toInt());
                        mp->setProvisionalDesignation(pd.value(secname+"/provisional_designation", "").toString());

                        //H-G magnitude system
                        const float magnitude = pd.value(secname+"/absolute_magnitude", -99.f).toFloat();
                        const float slope = pd.value(secname+"/slope_parameter", 0.15f).toFloat();
                        if (magnitude > -99.f)
                        {
                                mp->setAbsoluteMagnitudeAndSlope(magnitude, qBound(0.0f, slope, 1.0f));
                        }

                        mp->setColorIndexBV(static_cast<float>(bV));
                        mp->setSpectralType(pd.value(secname+"/spec_t", "").toString(), pd.value(secname+"/spec_b", "").toString());
                        if (semi_major_axis>0)
                                mp->deltaJDE = 2.0*semi_major_axis*StelCore::JD_SECOND;
                         else if ((semi_major_axis<=0.0) && (type!="interstellar object"))
                                qWarning() << "WARNING: Minor Body" << englishName << "has no semimajor axis!";

                        systemMinorBodies.push_back(newP);
                }
                else if (type == "comet")
                {
                        minorBodies << englishName;
                        newP = PlanetP(new Comet(englishName,
                                              pd.value(secname+"/radius", 1.0).toDouble()/AU,
                                              pd.value(secname+"/oblateness", 0.0).toDouble(),
                                              Vec3f(pd.value(secname+"/color", "1.0,1.0,1.0").toString()), // halo color
                                              pd.value(secname+"/albedo", 0.075f).toFloat(), // assume very dark surface
                                              pd.value(secname+"/roughness",0.9f).toFloat(),
                                              pd.value(secname+"/outgas_intensity",0.1f).toFloat(),
                                              pd.value(secname+"/outgas_falloff", 0.1f).toFloat(),
                                              pd.value(secname+"/tex_map", "nomap.png").toString(),
                                              pd.value(secname+"/model").toString(),
                                              posfunc,
                                              static_cast<KeplerOrbit*>(orbitPtr), // the KeplerOrbit object
                                              osculatingFunc, // ALWAYS NULL for comets.
                                              closeOrbit,
                                              pd.value(secname+"/hidden", false).toBool(),
                                              type,
                                              pd.value(secname+"/dust_widthfactor", 1.5f).toFloat(),
                                              pd.value(secname+"/dust_lengthfactor", 0.4f).toFloat(),
                                              pd.value(secname+"/dust_brightnessfactor", 1.5f).toFloat()
                                              ));
                        QSharedPointer<Comet> mp = newP.dynamicCast<Comet>();

                        //g,k magnitude system
                        const float magnitude = pd.value(secname+"/absolute_magnitude", -99).toFloat();
                        const float slope = qBound(-5.0f, pd.value(secname+"/slope_parameter", 4.0f).toFloat(), 30.0f);
                        if (magnitude > -99)
                        {
                                        mp->setAbsoluteMagnitudeAndSlope(magnitude, slope);
                        }

                        systemMinorBodies.push_back(newP);
                }
                else // type==star|planet|moon|dwarf planet|observer|artificial
                {
                        //qDebug() << type;
                        Q_ASSERT(type=="star" || type=="planet" || type=="moon" || type=="artificial" || type=="observer" || type=="dwarf planet"); // TBD: remove Pluto...
                        // Set possible default name of the normal map for avoiding yin-yang shaped moon
                        // phase when normal map key not exists. Example: moon_normals.png
                        // Details: https://bugs.launchpad.net/stellarium/+bug/1335609                        
                        newP = PlanetP(new Planet(englishName,
                                               pd.value(secname+"/radius", 1.0).toDouble()/AU,
                                               pd.value(secname+"/oblateness", 0.0).toDouble(),
                                               Vec3f(pd.value(secname+"/color", "1.0,1.0,1.0").toString()), // halo color
                                               pd.value(secname+"/albedo", 0.25f).toFloat(),
                                               pd.value(secname+"/roughness",0.9f).toFloat(),
                                               pd.value(secname+"/tex_map", "nomap.png").toString(),
                                               pd.value(secname+"/normals_map", englishName.toLower().append("_normals.png")).toString(),
                                               pd.value(secname+"/horizon_map", englishName.toLower().append("_horizon.png")).toString(),
                                               pd.value(secname+"/model").toString(),
                                               posfunc,
                                               static_cast<KeplerOrbit*>(orbitPtr), // This remains Q_NULLPTR for the major planets, or has a KeplerOrbit for planet moons.
                                               osculatingFunc,
                                               closeOrbit,
                                               pd.value(secname+"/hidden", false).toBool(),
                                               pd.value(secname+"/atmosphere", false).toBool(),
                                               pd.value(secname+"/halo", true).toBool(),
                                               type));
                        newP->absoluteMagnitude = pd.value(secname+"/absolute_magnitude", -99.f).toFloat();

                        // Moon designation (planet index + IAU moon number)
                        QString moonDesignation = pd.value(secname+"/iau_moon_number", "").toString();
                        if (!moonDesignation.isEmpty())
                        {
                                newP->setIAUMoonNumber(moonDesignation);
                        }
                        newP->setColorIndexBV(static_cast<float>(bV));
                }

                if (!parent.isNull())
                {
                        parent->satellites.append(newP);
                        newP->parent = parent;
                }
                if (secname=="earth") earth = newP;
                if (secname=="sun") sun = newP;
                if (secname=="moon") moon = newP;

                // At this point the orbit and object type (class Planet and subclasses) have been fixed.
                // For many objects we have oriented spheroids with rotational parameters.

                // There are two ways of defining the axis orientation:
                // obliquity and ascending node, which was used by Stellarium already before 2010 (based on Celestia?).
                double rotObliquity = pd.value(secname+"/rot_obliquity",0.).toDouble()*(M_PI_180);
                double rotAscNode = pd.value(secname+"/rot_equator_ascending_node",0.).toDouble()*(M_PI_180);
                // rot_periode given in hours (from which rotPeriod in days),
                // The default is useful for many moons in bound rotation
                double rotPeriod=pd.value(secname+"/rot_periode", pd.value(secname+"/orbit_Period", 1.).toDouble()*24.).toDouble()/24.;
                double rotOffset=pd.value(secname+"/rot_rotation_offset",0.).toDouble();

                // 0.21+: Use WGCCRE planet North pole data if available
                // NB: N pole for J2000 epoch as defined by IAU (NOT right hand rotation rule)
                // Define only basic motion. Use special functions for more complicated axes.
                const double J2000NPoleRA  = pd.value(secname+"/rot_pole_ra",  0.).toDouble()*M_PI_180;
                const double J2000NPoleRA1 = pd.value(secname+"/rot_pole_ra1", 0.).toDouble()*M_PI_180;
                const double J2000NPoleDE  = pd.value(secname+"/rot_pole_de",  0.).toDouble()*M_PI_180;
                const double J2000NPoleDE1 = pd.value(secname+"/rot_pole_de1", 0.).toDouble()*M_PI_180;
                const double J2000NPoleW0  = pd.value(secname+"/rot_pole_w0",  0.).toDouble(); // [degrees]   Basically the same idea as rot_rotation_offset, but W!=rotAngle
                const double J2000NPoleW1  = pd.value(secname+"/rot_pole_w1",  0.).toDouble(); // [degrees/d] Basically the same idea as 360/rot_periode
                if (fabs(J2000NPoleW1) > 0.0) // Patch possibly old period value with a more modern value.
                {
                        // this is just another expression for rotational speed.
                        rotPeriod=360.0/J2000NPoleW1;
                }

                // IMPORTANT: For the planet moons with orbits relative to planets' equator plane,
                // re-compute the important bits from the updated axis elements.
                // Reactivated to re-establish Pluto/Charon lock #153
                if((J2000NPoleRA!=0.) || (J2000NPoleDE!=0.))
                {
                        // If available, recompute obliquity and AscNode from the new data.
                        // Solution since 0.16: Make this once for J2000.
                        // Optional (future?): Repeat this block in Planet::computeTransMatrix() for planets with moving axes and update all Moons' KeplerOrbit if required.
                        Vec3d J2000NPole;
                        StelUtils::spheToRect(J2000NPoleRA,J2000NPoleDE,J2000NPole);

                        Vec3d vsop87Pole(StelCore::matJ2000ToVsop87.multiplyWithoutTranslation(J2000NPole));

                        double lon, lat;
                        StelUtils::rectToSphe(&lon, &lat, vsop87Pole);

                        rotObliquity = (M_PI_2 - lat);
                        rotAscNode = (lon + M_PI_2);

                        //qDebug() << englishName << ": Compare these values to the older data in ssystem_major";
                        //qDebug() << "\tCalculated rotational obliquity: " << rotObliquity*180./M_PI;
                        //qDebug() << "\tCalculated rotational ascending node: " << rotAscNode*180./M_PI;

                        if (J2000NPoleW0 >0)
                        {
                                // W0 is counted from the ascending node with ICRF, but rotOffset from orbital plane.
                                // Try this assumption by just counting Offset=W0+90+RA0.
                                rotOffset=J2000NPoleW0 + lon*M_180_PI;
                                //qDebug() << "\tCalculated rotational period (days // hours): " << rotPeriod << "//" << rotPeriod*24.;
                                //qDebug() << "\tRotational offset (degrees): " << rotOffset;
                        }
                }
                newP->setRotationElements(
                        englishName,
                        rotPeriod,
                        rotOffset,
                        pd.value(secname+"/rot_epoch", J2000).toDouble(),
                        rotObliquity,
                        rotAscNode,
                        J2000NPoleRA,
                        J2000NPoleRA1,
                        J2000NPoleDE,
                        J2000NPoleDE1,
                        J2000NPoleW0,
                        J2000NPoleW1);
                // orbit_Period or orbit_visualization_period given in days.
                // Elliptical Kepler orbits (ecc<0.9) will replace whatever is given by a value computed on the fly.
                newP->setSiderealPeriod(fabs(pd.value(secname+"/orbit_Period",
                                                      pd.value(secname+"/orbit_visualization_period" )).toDouble()));

                if (pd.contains(secname+"/tex_ring")) {
                        const float rMin = pd.value(secname+"/ring_inner_size").toFloat()/AUf;
                        const float rMax = pd.value(secname+"/ring_outer_size").toFloat()/AUf;
                        Ring *r = new Ring(rMin,rMax,pd.value(secname+"/tex_ring").toString());
                        newP->setRings(r);
                }

                systemPlanets.push_back(newP);
                readOk++;
        }

        if (systemPlanets.isEmpty())
        {
                qWarning() << "No Solar System objects loaded from" << QDir::toNativeSeparators(filePath);
                return false;
        }
        else qDebug() << "SolarSystem has " << systemPlanets.count() << "entries.";

        // special case: load earth shadow texture
        if (!Planet::texEarthShadow)
                Planet::texEarthShadow = StelApp::getInstance().getTextureManager().createTexture(StelFileMgr::getInstallationDir()+"/textures/earth-shadow.png");

        // Also comets just have static textures.
        if (!Comet::comaTexture)
                Comet::comaTexture = StelApp::getInstance().getTextureManager().createTextureThread(StelFileMgr::getInstallationDir()+"/textures/cometComa.png", StelTexture::StelTextureParams(true, GL_LINEAR, GL_CLAMP_TO_EDGE));
        //tail textures. We use paraboloid tail bodies, textured like a fisheye sphere, i.e. center=head. The texture should be something like a mottled star to give some structure.
        if (!Comet::tailTexture)
                Comet::tailTexture = StelApp::getInstance().getTextureManager().createTextureThread(StelFileMgr::getInstallationDir()+"/textures/cometTail.png", StelTexture::StelTextureParams(true, GL_LINEAR, GL_CLAMP_TO_EDGE));

        if (readOk>0)
                qDebug() << "Loaded" << readOk << "Solar System bodies";

        return true;
}

// Compute the position for every elements of the solar system.
// The order is not important since the position is computed relatively to the mother body
void SolarSystem::computePositions(double dateJDE, PlanetP observerPlanet)
{
        StelCore *core=StelApp::getInstance().getCore();
        const bool withAberration=core->getUseAberration();
        if (flagLightTravelTime) // switching off light time correction implies no aberration for the planets.
        {
                for (const auto& p : qAsConst(systemPlanets))
                {
                        p->computePosition(dateJDE, Vec3d(0.));
                }
                const Vec3d obsPosJDE=observerPlanet->getHeliocentricEclipticPos();

                // For higher accuracy, we now make two iterations of light time and aberration correction. In the final round, we also compute rotation data.
                // May fix sub-arcsecond inaccuracies, and optionally apply aberration in the way described in Explanatory Supplement (2013), 7.55.
                // For reasons unknown (See discussion in GH:#1626) we do not add anything for the Moon when observed from Earth!
                // Presumably the used ephemerides already provide aberration-corrected positions for the Moon?
                const Vec3d aberrationPushSpeed=observerPlanet->getHeliocentricEclipticVelocity() * core->getAberrationFactor();
                for (const auto& p : qAsConst(systemPlanets))
                {
                        //p->setExtraInfoString(StelObject::DebugAid, "");
                        const double lightTimeDays = (p->getHeliocentricEclipticPos()-obsPosJDE).norm() * (AU / (SPEED_OF_LIGHT * 86400.));
                        Vec3d aberrationPush(0.);
                        if (withAberration && (observerPlanet->englishName!="Earth" || p->englishName!="Moon"))
                                aberrationPush=lightTimeDays*aberrationPushSpeed;
                        p->computePosition(dateJDE-lightTimeDays, aberrationPush);
                }
                // Extra accuracy with another round. Not sure if useful. Maybe hide behind a new property flag?
                for (const auto& p : qAsConst(systemPlanets))
                {
                        //p->setExtraInfoString(StelObject::DebugAid, "");
                        const double lightTimeDays = (p->getHeliocentricEclipticPos()-obsPosJDE).norm() * (AU / (SPEED_OF_LIGHT * 86400.));
                        Vec3d aberrationPush(0.);
                        if (withAberration && (observerPlanet->englishName!="Earth" || p->englishName!="Moon"))
                                aberrationPush=lightTimeDays*aberrationPushSpeed;
                        // The next call may already do nothing if the time difference to the previous round is not large enough.
                        p->computePosition(dateJDE-lightTimeDays, aberrationPush);
//                        p->setExtraInfoString(StelObject::DebugAid, QString("LightTime %1d; obsSpeed %2/%3/%4 AU/d")
//                                              .arg(QString::number(lightTimeDays, 'f', 3))
//                                              .arg(QString::number(aberrationPushSpeed[0], 'f', 3))
//                                              .arg(QString::number(aberrationPushSpeed[0], 'f', 3))
//                                              .arg(QString::number(aberrationPushSpeed[0], 'f', 3)));

                        if      (p->englishName=="Moon")    RotationElements::updatePlanetCorrections(dateJDE-lightTimeDays, RotationElements::EarthMoon);
                        else if (p->englishName=="Mars")    RotationElements::updatePlanetCorrections(dateJDE-lightTimeDays, RotationElements::Mars);
                        else if (p->englishName=="Jupiter") RotationElements::updatePlanetCorrections(dateJDE-lightTimeDays, RotationElements::Jupiter);
                        else if (p->englishName=="Saturn")  RotationElements::updatePlanetCorrections(dateJDE-lightTimeDays, RotationElements::Saturn);
                        else if (p->englishName=="Uranus")  RotationElements::updatePlanetCorrections(dateJDE-lightTimeDays, RotationElements::Uranus);
                        else if (p->englishName=="Neptune") RotationElements::updatePlanetCorrections(dateJDE-lightTimeDays, RotationElements::Neptune);
                }
        }
        else
        {
                for (const auto& p : qAsConst(systemPlanets))
                {
                        p->setExtraInfoString(StelObject::DebugAid, "");
                        p->computePosition(dateJDE, Vec3d(0.));
                        if      (p->englishName=="Moon")    RotationElements::updatePlanetCorrections(dateJDE, RotationElements::EarthMoon);
                        else if (p->englishName=="Mars")    RotationElements::updatePlanetCorrections(dateJDE, RotationElements::Mars);
                        else if (p->englishName=="Jupiter") RotationElements::updatePlanetCorrections(dateJDE, RotationElements::Jupiter);
                        else if (p->englishName=="Saturn")  RotationElements::updatePlanetCorrections(dateJDE, RotationElements::Saturn);
                        else if (p->englishName=="Uranus")  RotationElements::updatePlanetCorrections(dateJDE, RotationElements::Uranus);
                        else if (p->englishName=="Neptune") RotationElements::updatePlanetCorrections(dateJDE, RotationElements::Neptune);
                }
        }
        computeTransMatrices(dateJDE, observerPlanet->getHeliocentricEclipticPos());
}

// Compute the transformation matrix for every elements of the solar system.
// The elements have to be ordered hierarchically, eg. it's important to compute earth before moon.
void SolarSystem::computeTransMatrices(double dateJDE, const Vec3d& observerPos)
{
        const double dateJD=dateJDE - (StelApp::getInstance().getCore()->computeDeltaT(dateJDE))/86400.0;

        if (flagLightTravelTime)
        {
                for (const auto& p : qAsConst(systemPlanets))
                {
                        const double light_speed_correction = (p->getHeliocentricEclipticPos()-observerPos).norm() * (AU / (SPEED_OF_LIGHT * 86400));
                        p->computeTransMatrix(dateJD-light_speed_correction, dateJDE-light_speed_correction);
                }
        }
        else
        {
                for (const auto& p : qAsConst(systemPlanets))
                {
                        p->computeTransMatrix(dateJD, dateJDE);
                }
        }
}

// And sort them from the furthest to the closest to the observer
// NOTE: std::binary_function is deprecated in C++11 and removed in C++17
struct biggerDistance : public StelUtils::binary_function<PlanetP, PlanetP, bool>
{
        bool operator()(PlanetP p1, PlanetP p2)
        {
                return p1->getDistance() > p2->getDistance();
        }
};

// Draw all the elements of the solar system
// We are supposed to be in heliocentric coordinate
void SolarSystem::draw(StelCore* core)
{
        // AstroCalcDialog
        drawEphemerisItems(core);

        if (!flagShow)
                return;

        // Compute each Planet distance to the observer
        const Vec3d obsHelioPos = core->getObserverHeliocentricEclipticPos();

        for (const auto& p : qAsConst(systemPlanets))
        {
                p->computeDistance(obsHelioPos);
        }

        // And sort them from the furthest to the closest
        std::sort(systemPlanets.begin(),systemPlanets.end(),biggerDistance());

        if (trailFader.getInterstate()>0.0000001f)
        {
                StelPainter sPainter(core->getProjection2d());
                const float ppx = static_cast<float>(sPainter.getProjector()->getDevicePixelsPerPixel());
                allTrails->setOpacity(trailFader.getInterstate());
                if (trailsThickness>1 || ppx>1.f)
                        sPainter.setLineWidth(trailsThickness*ppx);
                allTrails->draw(core, &sPainter);
                if (trailsThickness>1 || ppx>1.f)
                        sPainter.setLineWidth(1);
        }

        // Make some voodoo to determine when labels should be displayed
        const float sdLimitMag=static_cast<float>(core->getSkyDrawer()->getLimitMagnitude());
        const float maxMagLabel = (sdLimitMag<5.f ? sdLimitMag :
                        5.f+(sdLimitMag-5.f)*1.2f) +(static_cast<float>(labelsAmount)-3.f)*1.2f;

        // Draw the elements
        for (const auto& p : qAsConst(systemPlanets))
        {
                if ( (p->getEnglishName() != "Sun") ||
                                ((p->getEnglishName() == "Sun") && !(core->getSkyDrawer()->getFlagDrawSunAfterAtmosphere())))
                        p->draw(core, maxMagLabel, planetNameFont);
        }

        if (GETSTELMODULE(StelObjectMgr)->getFlagSelectedObjectPointer() && getFlagPointer())
                drawPointer(core);
}

void SolarSystem::drawEphemerisItems(const StelCore* core)
{
        if (flagShow || (!flagShow && getFlagEphemerisAlwaysOn()))
        {
                if (getFlagEphemerisMarkers())
                        drawEphemerisMarkers(core);
                if (getFlagEphemerisLine())
                        drawEphemerisLine(core);
        }
}

Vec3f SolarSystem::getEphemerisMarkerColor(int index) const
{
        // Sync index with AstroCalcDialog::generateEphemeris(). If required, switch to using a QMap.
        const QVector<Vec3f> colors={
                ephemerisGenericMarkerColor,
                ephemerisSecondaryMarkerColor,
                ephemerisMercuryMarkerColor,
                ephemerisVenusMarkerColor,
                ephemerisMarsMarkerColor,
                ephemerisJupiterMarkerColor,
                ephemerisSaturnMarkerColor};
        return colors.value(index, ephemerisGenericMarkerColor);
}

void SolarSystem::drawEphemerisMarkers(const StelCore *core)
{
        const int fsize = AstroCalcDialog::EphemerisList.count();
        if (fsize==0) return;

        StelProjectorP prj;
        if (getFlagEphemerisHorizontalCoordinates())
                prj = core->getProjection(StelCore::FrameAltAz, StelCore::RefractionOff);
        else
                prj = core->getProjection(StelCore::FrameJ2000);
        StelPainter sPainter(prj);

        float size, shift, baseSize = 4.f;
        const bool showDates = getFlagEphemerisDates();
        const bool showMagnitudes = getFlagEphemerisMagnitudes();
        const bool showSkippedData = getFlagEphemerisSkipData();
        const bool skipMarkers = getFlagEphemerisSkipMarkers();
        const int dataStep = getEphemerisDataStep();
        const int sizeCoeff = getEphemerisLineThickness() - 1;
        QString info = "";
        Vec3d win;
        Vec3f markerColor;
        bool skipFlag = false;

        if (getFlagEphemerisLine() && getFlagEphemerisScaleMarkers())
                baseSize = 3.f; // The line lies through center of marker

        for (int i =0; i < fsize; i++)
        {
                skipFlag = (((i + 1)%dataStep)!=1 && dataStep!=1);

                // Check visibility of pointer
                if (!(sPainter.getProjector()->projectCheck(AstroCalcDialog::EphemerisList[i].coord, win)))
                        continue;

                QString debugStr; // Used temporarily for development
                const bool isComet=AstroCalcDialog::EphemerisList[i].isComet;
                if (i == AstroCalcDialog::DisplayedPositionIndex)
                {
                        markerColor = getEphemerisSelectedMarkerColor();
                        size = 6.f;
                }
                else
                {
                        markerColor = getEphemerisMarkerColor(AstroCalcDialog::EphemerisList[i].colorIndex);
                        size = baseSize;
                }
                if (isComet) size += 16.f;
                size += sizeCoeff;
                sPainter.setColor(markerColor);
                sPainter.setBlending(true, GL_ONE, GL_ONE);
                if (isComet)
                        texEphemerisCometMarker->bind();
                else
                        texEphemerisMarker->bind();

                if (skipMarkers && skipFlag)
                        continue;

                Vec3f win;
                float solarAngle=0.f; // Angle to possibly rotate the texture. Degrees.
                if (prj->project(AstroCalcDialog::EphemerisList[i].coord, win))
                {
                        if (isComet)
                        {
                                // compute solarAngle in screen space.
                                Vec3f sunWin;
                                prj->project(AstroCalcDialog::EphemerisList[i].sunCoord, sunWin);
                                // TODO: In some projections, we may need to test result and flip/mirror the angle, or deal with wrap-around effects.
                                // E.g., in cylindrical mode, the comet icon will flip as soon as the corresponding sun position wraps around the screen edge.
                                solarAngle=M_180_PIf*(atan2(-(win[1]-sunWin[1]), win[0]-sunWin[0]));
                                // This will show projected positions and angles usable in labels.
                                debugStr = QString("Sun: %1/%2 Obj: %3/%4 -->%5").arg(QString::number(sunWin[0]), QString::number(sunWin[1]), QString::number(win[0]), QString::number(win[1]), QString::number(solarAngle));
                        }
                        //sPainter.drawSprite2dMode(static_cast<float>(win[0]), static_cast<float>(win[1]), size, 180.f+AstroCalcDialog::EphemerisList[i].solarAngle*M_180_PIf);
                        sPainter.drawSprite2dMode(static_cast<float>(win[0]), static_cast<float>(win[1]), size, 270.f-solarAngle);
                }

                if (showDates || showMagnitudes)
                {
                        if (showSkippedData && skipFlag)
                                continue;

                        shift = 3.f + size/1.6f;
                        if (showDates && showMagnitudes)
                                info = QString("%1 (%2)").arg(AstroCalcDialog::EphemerisList[i].objDateStr, QString::number(AstroCalcDialog::EphemerisList[i].magnitude, 'f', 2));
                        if (showDates && !showMagnitudes)
                                info = AstroCalcDialog::EphemerisList[i].objDateStr;
                        if (!showDates && showMagnitudes)
                                info = QString::number(AstroCalcDialog::EphemerisList[i].magnitude, 'f', 2);

                        // Activate for debug labels.
                        //info=debugStr;
                        sPainter.drawText(AstroCalcDialog::EphemerisList[i].coord, info, 0, shift, shift, false);
                }
        }
}

void SolarSystem::drawEphemerisLine(const StelCore *core)
{
        const int size = AstroCalcDialog::EphemerisList.count();
        if (size==0) return;

        // The array of data is not empty - good news!
        StelProjectorP prj;
        if (getFlagEphemerisHorizontalCoordinates())
                prj = core->getProjection(StelCore::FrameAltAz, StelCore::RefractionOff);
        else
                prj = core->getProjection(StelCore::FrameJ2000);
        StelPainter sPainter(prj);
        const float ppx = static_cast<float>(sPainter.getProjector()->getDevicePixelsPerPixel());

        const float oldLineThickness=sPainter.getLineWidth();
        const float lineThickness = getEphemerisLineThickness()*ppx;
        if (!fuzzyEquals(lineThickness, oldLineThickness))
                sPainter.setLineWidth(lineThickness);

        Vec3f color;
        QVector<Vec3d> vertexArray;
        QVector<Vec4f> colorArray;
        const int limit = getEphemerisDataLimit();
        const int nsize = static_cast<int>(size/limit);
        vertexArray.resize(nsize);
        colorArray.resize(nsize);
        for (int j=0; j<limit; j++)
        {
                for (int i =0; i < nsize; i++)
                {
                        color = getEphemerisMarkerColor(AstroCalcDialog::EphemerisList[i + j*nsize].colorIndex);
                        colorArray[i]=Vec4f(color, 1.0f);
                        vertexArray[i]=AstroCalcDialog::EphemerisList[i + j*nsize].coord;
                }
                sPainter.drawPath(vertexArray, colorArray);
        }

        if (!fuzzyEquals(lineThickness, oldLineThickness))
                sPainter.setLineWidth(oldLineThickness); // restore line thickness
}

void SolarSystem::fillEphemerisDates()
{
        const int fsize = AstroCalcDialog::EphemerisList.count();
        if (fsize==0) return;

        StelLocaleMgr* localeMgr = &StelApp::getInstance().getLocaleMgr();
        const bool showSmartDates = getFlagEphemerisSmartDates();
        double JD = AstroCalcDialog::EphemerisList.first().objDate;
        bool withTime = (fsize>1 && (AstroCalcDialog::EphemerisList[1].objDate-JD<1.0));

        int fYear, fMonth, fDay, sYear, sMonth, sDay, h, m, s;
        QString info;
        const double shift = StelApp::getInstance().getCore()->getUTCOffset(JD)*0.041666666666;
        StelUtils::getDateFromJulianDay(JD+shift, &fYear, &fMonth, &fDay);
        bool sFlag = true;
        sYear = fYear;
        sMonth = fMonth;
        sDay = fDay;
        const bool showSkippedData = getFlagEphemerisSkipData();
        const int dataStep = getEphemerisDataStep();

        for (int i = 0; i < fsize; i++)
        {
                JD = AstroCalcDialog::EphemerisList[i].objDate;
                StelUtils::getDateFromJulianDay(JD+shift, &fYear, &fMonth, &fDay);

                if (showSkippedData && ((i + 1)%dataStep)!=1 && dataStep!=1)
                        continue;

                if (showSmartDates)
                {
                        if (sFlag)
                                info = QString("%1").arg(fYear);

                        if (info.isEmpty() && !sFlag && fYear!=sYear)
                                info = QString("%1").arg(fYear);

                        if (!info.isEmpty())
                                info.append(QString("/%1").arg(localeMgr->romanMonthName(fMonth)));
                        else if (fMonth!=sMonth)
                                info = QString("%1").arg(localeMgr->romanMonthName(fMonth));

                        if (!info.isEmpty())
                                info.append(QString("/%1").arg(fDay));
                        else
                                info = QString("%1").arg(fDay);

                        if (withTime) // very short step
                        {
                                if (fDay==sDay && !sFlag)
                                        info.clear();

                                StelUtils::getTimeFromJulianDay(JD+shift, &h, &m, &s);
                                QString hours = QString::number(h).rightJustified(2, '0');
                                QString minutes = QString::number(m).rightJustified(2, '0');
                                if (!info.isEmpty())
                                        info.append(QString(" %1:%2").arg(hours, minutes));
                                else
                                        info = QString("%1:%2").arg(hours, minutes);
                        }

                        AstroCalcDialog::EphemerisList[i].objDateStr = info;
                        info.clear();
                        sYear = fYear;
                        sMonth = fMonth;
                        sDay = fDay;
                        sFlag = false;
                }
                else
                {
                        // OK, let's use standard formats for date and time (as defined for whole planetarium)
                        if (withTime)
                                AstroCalcDialog::EphemerisList[i].objDateStr = QString("%1 %2").arg(localeMgr->getPrintableDateLocal(JD), localeMgr->getPrintableTimeLocal(JD));
                        else
                                AstroCalcDialog::EphemerisList[i].objDateStr = localeMgr->getPrintableDateLocal(JD);
                }
        }
}

PlanetP SolarSystem::searchByEnglishName(QString planetEnglishName) const
{
        for (const auto& p : systemPlanets)
        {
                if (p->getEnglishName().toUpper() == planetEnglishName.toUpper() || p->getCommonEnglishName().toUpper() == planetEnglishName.toUpper())
                        return p;
        }
        return PlanetP();
}

PlanetP SolarSystem::searchMinorPlanetByEnglishName(QString planetEnglishName) const
{
        for (const auto& p : systemMinorBodies)
        {
                if (p->getCommonEnglishName().toUpper() == planetEnglishName.toUpper() || p->getEnglishName().toUpper() == planetEnglishName.toUpper())
                        return p;
        }
        return PlanetP();
}


StelObjectP SolarSystem::searchByNameI18n(const QString& planetNameI18) const
{
        for (const auto& p : systemPlanets)
        {
                QString nativeName = p->getNativeNameI18n().toUpper();
                if (p->getNameI18n().toUpper() == planetNameI18.toUpper() || (!nativeName.isEmpty() && nativeName == planetNameI18.toUpper()))
                        return qSharedPointerCast<StelObject>(p);
        }
        return StelObjectP();
}


StelObjectP SolarSystem::searchByName(const QString& name) const
{
        for (const auto& p : systemPlanets)
        {
                QString nativeName = p->getNativeName().toUpper();
                if (p->getEnglishName().toUpper() == name.toUpper() || (!nativeName.isEmpty() && nativeName == name.toUpper()))
                        return qSharedPointerCast<StelObject>(p);
        }
        return StelObjectP();
}

float SolarSystem::getPlanetVMagnitude(QString planetName, bool withExtinction) const
{
        PlanetP p = searchByEnglishName(planetName);
        if (p.isNull()) // Possible was asked the common name of minor planet?
                p = searchMinorPlanetByEnglishName(planetName);
        float r = 0.f;
        if (withExtinction)
                r = p->getVMagnitudeWithExtinction(StelApp::getInstance().getCore());
        else
                r = p->getVMagnitude(StelApp::getInstance().getCore());
        return r;
}

QString SolarSystem::getPlanetType(QString planetName) const
{
        PlanetP p = searchByEnglishName(planetName);
        if (p.isNull()) // Possible was asked the common name of minor planet?
                p = searchMinorPlanetByEnglishName(planetName);
        if (p.isNull())
                return QString("UNDEFINED");
        return p->getPlanetTypeString();
}

double SolarSystem::getDistanceToPlanet(QString planetName) const
{
        PlanetP p = searchByEnglishName(planetName);
        if (p.isNull()) // Possible was asked the common name of minor planet?
                p = searchMinorPlanetByEnglishName(planetName);
        return p->getDistance();
}

double SolarSystem::getElongationForPlanet(QString planetName) const
{
        PlanetP p = searchByEnglishName(planetName);
        if (p.isNull()) // Possible was asked the common name of minor planet?
                p = searchMinorPlanetByEnglishName(planetName);
        return p->getElongation(StelApp::getInstance().getCore()->getObserverHeliocentricEclipticPos());
}

double SolarSystem::getPhaseAngleForPlanet(QString planetName) const
{
        PlanetP p = searchByEnglishName(planetName);
        if (p.isNull()) // Possible was asked the common name of minor planet?
                p = searchMinorPlanetByEnglishName(planetName);
        return p->getPhaseAngle(StelApp::getInstance().getCore()->getObserverHeliocentricEclipticPos());
}

float SolarSystem::getPhaseForPlanet(QString planetName) const
{
        PlanetP p = searchByEnglishName(planetName);
        if (p.isNull()) // Possible was asked the common name of minor planet?
                p = searchMinorPlanetByEnglishName(planetName);
        return p->getPhase(StelApp::getInstance().getCore()->getObserverHeliocentricEclipticPos());
}

QStringList SolarSystem::getObjectsList(QString objType) const
{
        QStringList r;
        if (objType.toLower()=="all")
        {
                r = listAllObjects(true);
                // Remove the Sun
                r.removeOne("Sun");
                // Remove special objects
                r.removeOne("Solar System Observer");
                r.removeOne("Earth Observer");
                r.removeOne("Mars Observer");
                r.removeOne("Jupiter Observer");
                r.removeOne("Saturn Observer");
                r.removeOne("Uranus Observer");
                r.removeOne("Neptune Observer");
        }
        else
                r = listAllObjectsByType(objType, true);

        return r;
}

// Search if any Planet is close to position given in earth equatorial position and return the distance
StelObjectP SolarSystem::search(Vec3d pos, const StelCore* core) const
{
        pos.normalize();
        PlanetP closest;
        double cos_angle_closest = 0.;
        Vec3d equPos;

        for (const auto& p : systemPlanets)
        {
                equPos = p->getEquinoxEquatorialPos(core);
                equPos.normalize();
                double cos_ang_dist = equPos*pos;
                if (cos_ang_dist>cos_angle_closest)
                {
                        closest = p;
                        cos_angle_closest = cos_ang_dist;
                }
        }

        if (cos_angle_closest>0.999)
        {
                return qSharedPointerCast<StelObject>(closest);
        }
        else return StelObjectP();
}

// Return a QList containing the planets located inside the limFov circle around position vv
QList<StelObjectP> SolarSystem::searchAround(const Vec3d& vv, double limitFov, const StelCore* core) const
{
        QList<StelObjectP> result;
        if (!getFlagPlanets())
                return result;

        const bool withAberration=core->getUseAberration();
        Vec3d v(vv);
        v.normalize(); // TODO: start with vv already normalized?
        if (withAberration)
        {
                Vec3d vel=core->getCurrentPlanet()->getHeliocentricEclipticVelocity();
                StelCore::matVsop87ToJ2000.transfo(vel);
                vel*=core->getAberrationFactor()*(AU/(86400.0*SPEED_OF_LIGHT));
                v+=vel;
                v.normalize();
        }

        double cosLimFov = std::cos(limitFov * M_PI/180.);
        Vec3d equPos;
        double cosAngularSize;

        const QString weAreHere = core->getCurrentPlanet()->getEnglishName();
        for (const auto& p : systemPlanets)
        {
                equPos = p->getJ2000EquatorialPos(core);
                equPos.normalize();

                cosAngularSize = std::cos(p->getSpheroidAngularRadius(core) * M_PI/180.);

                if (equPos*v>=std::min(cosLimFov, cosAngularSize) && p->getEnglishName()!=weAreHere)
                {
                        result.append(qSharedPointerCast<StelObject>(p));
                }
        }
        return result;
}

// Update i18 names from english names according to current sky culture translator
void SolarSystem::updateI18n()
{
        const StelTranslator& trans = StelApp::getInstance().getLocaleMgr().getSkyTranslator();
        for (const auto& p : qAsConst(systemPlanets))
                p->translateName(trans);
}

QStringList SolarSystem::listMatchingObjects(const QString& objPrefix, int maxNbItem, bool useStartOfWords) const
{
        QStringList result;
        if (getFlagPlanets())
                result = StelObjectModule::listMatchingObjects(objPrefix, maxNbItem, useStartOfWords);
        return result;
}

void SolarSystem::setFlagTrails(bool b)
{
        if (getFlagTrails() != b)
        {
                trailFader = b;
                if (b)
                {
                        allTrails->reset(maxTrailPoints);
                        recreateTrails();
                }
                emit trailsDisplayedChanged(b);
        }
}

bool SolarSystem::getFlagTrails() const
{
        return static_cast<bool>(trailFader);
}

void SolarSystem::setMaxTrailPoints(int max)
{
        if (maxTrailPoints != max)
        {
                maxTrailPoints = max;
                allTrails->reset(max);
                recreateTrails();
                emit maxTrailPointsChanged(max);
        }
}

void SolarSystem::setMaxTrailTimeExtent(int max)
{
        if (maxTrailTimeExtent != max && maxTrailTimeExtent > 0)
        {
                maxTrailTimeExtent = max;
                recreateTrails();
                emit maxTrailTimeExtentChanged(max);
        }
}

void SolarSystem::setTrailsThickness(int v)
{
        if (trailsThickness != v)
        {
                trailsThickness = v;
                emit trailsThicknessChanged(v);
        }
}

void SolarSystem::setFlagHints(bool b)
{
        if (getFlagHints() != b)
        {
                for (const auto& p : qAsConst(systemPlanets))
                        p->setFlagHints(b);
                emit flagHintsChanged(b);
        }
}

bool SolarSystem::getFlagHints(void) const
{
        for (const auto& p : systemPlanets)
        {
                if (p->getFlagHints())
                        return true;
        }
        return false;
}

void SolarSystem::setFlagLabels(bool b)
{
        if (getFlagLabels() != b)
        {
                for (const auto& p : qAsConst(systemPlanets))
                        p->setFlagLabels(b);
                emit labelsDisplayedChanged(b);
        }
}

bool SolarSystem::getFlagLabels() const
{
        for (const auto& p : systemPlanets)
        {
                if (p->getFlagLabels())
                        return true;
        }
        return false;
}

void SolarSystem::setFlagOrbits(bool b)
{
        bool old = flagOrbits;
        flagOrbits = b;
        bool flagPlanetsOnly = getFlagPlanetsOrbitsOnly();
        if (!b || !selected || selected==sun)
        {
                if (flagPlanetsOnly)
                {
                        for (const auto& p : qAsConst(systemPlanets))
                        {
                                if (p->getPlanetType()==Planet::isPlanet)
                                        p->setFlagOrbits(b);
                                else
                                        p->setFlagOrbits(false);
                        }
                }
                else
                {
                        for (const auto& p : qAsConst(systemPlanets))
                                p->setFlagOrbits(b);
                }
        }
        else if (getFlagIsolatedOrbits()) // If a Planet is selected and orbits are on, fade out non-selected ones
        {
                if (flagPlanetsOnly)
                {
                        for (const auto& p : qAsConst(systemPlanets))
                        {
                                if (selected == p && p->getPlanetType()==Planet::isPlanet)
                                        p->setFlagOrbits(b);
                                else
                                        p->setFlagOrbits(false);
                        }
                }
                else
                {
                        for (const auto& p : qAsConst(systemPlanets))
                        {
                                if (selected == p)
                                        p->setFlagOrbits(b);
                                else
                                        p->setFlagOrbits(false);
                        }
                }
        }
        else
        {
                // A planet is selected and orbits are on - draw orbits for the planet and their moons
                for (const auto& p : qAsConst(systemPlanets))
                {
                        if (selected == p || selected == p->parent)
                                p->setFlagOrbits(b);
                        else
                                p->setFlagOrbits(false);
                }
        }
        if(old != flagOrbits)
                emit flagOrbitsChanged(flagOrbits);
}

void SolarSystem::setFlagLightTravelTime(bool b)
{
        if(b!=flagLightTravelTime)
        {
                flagLightTravelTime = b;
                emit flagLightTravelTimeChanged(b);
        }
}

void SolarSystem::setFlagShowObjSelfShadows(bool b)
{
        if(b!=flagShowObjSelfShadows)
        {
                flagShowObjSelfShadows = b;
                if(!b)
                        Planet::deinitFBO();
                emit flagShowObjSelfShadowsChanged(b);
        }
}

void SolarSystem::setSelected(PlanetP obj)
{
        if (obj && obj->getType() == "Planet")
        {
                selected = obj;
                selectedSSO.push_back(obj);
        }
        else
                selected.clear();
        // Undraw other objects hints, orbit, trails etc..
        setFlagHints(getFlagHints());
        setFlagOrbits(getFlagOrbits());
}


void SolarSystem::update(double deltaTime)
{
        trailFader.update(static_cast<int>(deltaTime*1000));
        if (trailFader.getInterstate()>0.f)
        {
                allTrails->update();
        }

        for (const auto& p : qAsConst(systemPlanets))
        {
                p->update(static_cast<int>(deltaTime*1000));
        }
}

// is a lunar eclipse close at hand?
bool SolarSystem::nearLunarEclipse() const
{
        // TODO: could replace with simpler test
        // TODO Source?

        const Vec3d sun = getSun()->getAberrationPush();
        const Vec3d e = getEarth()->getEclipticPos();
        const Vec3d m = getMoon()->getEclipticPos();  // relative to earth
        const Vec3d mh = getMoon()->getHeliocentricEclipticPos();  // relative to sun

        // shadow location at earth + moon distance along earth vector from (aberrated) sun
        Vec3d en = e-sun;
        en.normalize();
        Vec3d shadow = en * (e.norm() + m.norm());

        // find shadow radii in AU
        double r_penumbra = shadow.norm()*702378.1/AU/e.norm() - SUN_RADIUS/AU;

        // modify shadow location for scaled moon
        Vec3d mdist = shadow - mh;
        if(mdist.norm() > r_penumbra + 2000./AU) return false;   // not visible so don't bother drawing

        return true;
}

QStringList SolarSystem::listAllObjects(bool inEnglish) const
{
        QStringList result;
        if (inEnglish)
        {
                for (const auto& p : systemPlanets)
                {
                        result << p->getEnglishName();
                }
        }
        else
        {
                for (const auto& p : systemPlanets)
                {
                        result << p->getNameI18n();
                        if (!p->getNativeNameI18n().isEmpty())
                                result << p->getNativeNameI18n() << p->getNativeName();
                }
        }
        return result;
}

QStringList SolarSystem::listAllObjectsByType(const QString &objType, bool inEnglish) const
{
        QStringList result;
        if (inEnglish)
        {
                for (const auto& p : systemPlanets)
                {
                        if (p->getPlanetTypeString()==objType)
                                result << p->getEnglishName();
                }
        }
        else
        {
                for (const auto& p : systemPlanets)
                {
                        if (p->getPlanetTypeString()==objType)
                                result << p->getNameI18n();
                }
        }
        return result;
}

void SolarSystem::selectedObjectChange(StelModule::StelModuleSelectAction)
{
        const QList<StelObjectP> newSelected = GETSTELMODULE(StelObjectMgr)->getSelectedObject("Planet");
        if (!newSelected.empty())
        {
                setSelected(qSharedPointerCast<Planet>(newSelected[0]));
                if (getFlagIsolatedTrails())
                        recreateTrails();
        }
        else
                setSelected("");
}

// Activate/Deactivate planets display
void SolarSystem::setFlagPlanets(bool b)
{
        if (b!=flagShow)
        {
                flagShow=b;
                emit flagPlanetsDisplayedChanged(b);
        }
}

bool SolarSystem::getFlagPlanets(void) const
{
        return flagShow;
}

void SolarSystem::setFlagEphemerisMarkers(bool b)
{
        if (b!=ephemerisMarkersDisplayed)
        {
                ephemerisMarkersDisplayed=b;
                conf->setValue("astrocalc/flag_ephemeris_markers", b); // Immediate saving of state
                emit ephemerisMarkersChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisMarkers() const
{
        return ephemerisMarkersDisplayed;
}

void SolarSystem::setFlagEphemerisLine(bool b)
{
        if (b!=ephemerisLineDisplayed)
        {
                ephemerisLineDisplayed=b;
                conf->setValue("astrocalc/flag_ephemeris_line", b); // Immediate saving of state
                emit ephemerisLineChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisLine() const
{
        return ephemerisLineDisplayed;
}

bool SolarSystem::getFlagEphemerisAlwaysOn() const
{
        return ephemerisAlwaysOn;
}

void SolarSystem::setFlagEphemerisAlwaysOn(bool b)
{
        if (b != ephemerisAlwaysOn)
        {
                ephemerisAlwaysOn = b;
                conf->setValue("astrocalc/flag_ephemeris_alwayson", b); // Immediate saving of state
                emit ephemerisAlwaysOnChanged(b);
        }
}

void SolarSystem::setFlagEphemerisHorizontalCoordinates(bool b)
{
        if (b!=ephemerisHorizontalCoordinates)
        {
                ephemerisHorizontalCoordinates=b;
                conf->setValue("astrocalc/flag_ephemeris_horizontal", b); // Immediate saving of state
                emit ephemerisHorizontalCoordinatesChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisHorizontalCoordinates() const
{
        return ephemerisHorizontalCoordinates;
}

void SolarSystem::setFlagEphemerisDates(bool b)
{
        if (b!=ephemerisDatesDisplayed)
        {
                ephemerisDatesDisplayed=b;
                conf->setValue("astrocalc/flag_ephemeris_dates", b); // Immediate saving of state
                emit ephemerisDatesChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisDates() const
{
        return ephemerisDatesDisplayed;
}

void SolarSystem::setFlagEphemerisMagnitudes(bool b)
{
        if (b!=ephemerisMagnitudesDisplayed)
        {
                ephemerisMagnitudesDisplayed=b;
                conf->setValue("astrocalc/flag_ephemeris_magnitudes", b); // Immediate saving of state
                emit ephemerisMagnitudesChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisMagnitudes() const
{
        return ephemerisMagnitudesDisplayed;
}

void SolarSystem::setFlagEphemerisSkipData(bool b)
{
        if (b!=ephemerisSkipDataDisplayed)
        {
                ephemerisSkipDataDisplayed=b;
                conf->setValue("astrocalc/flag_ephemeris_skip_data", b); // Immediate saving of state
                emit ephemerisSkipDataChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisSkipData() const
{
        return ephemerisSkipDataDisplayed;
}

void SolarSystem::setFlagEphemerisSkipMarkers(bool b)
{
        if (b!=ephemerisSkipMarkersDisplayed)
        {
                ephemerisSkipMarkersDisplayed=b;
                conf->setValue("astrocalc/flag_ephemeris_skip_markers", b); // Immediate saving of state
                emit ephemerisSkipMarkersChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisSkipMarkers() const
{
        return ephemerisSkipMarkersDisplayed;
}

void SolarSystem::setFlagEphemerisSmartDates(bool b)
{
        if (b!=ephemerisSmartDatesDisplayed)
        {
                ephemerisSmartDatesDisplayed=b;
                conf->setValue("astrocalc/flag_ephemeris_smart_dates", b); // Immediate saving of state
                emit ephemerisSmartDatesChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisSmartDates() const
{
        return ephemerisSmartDatesDisplayed;
}

void SolarSystem::setFlagEphemerisScaleMarkers(bool b)
{
        if (b!=ephemerisScaleMarkersDisplayed)
        {
                ephemerisScaleMarkersDisplayed=b;
                conf->setValue("astrocalc/flag_ephemeris_scale_markers", b); // Immediate saving of state
                emit ephemerisScaleMarkersChanged(b);
        }
}

bool SolarSystem::getFlagEphemerisScaleMarkers() const
{
        return ephemerisScaleMarkersDisplayed;
}

void SolarSystem::setEphemerisDataStep(int step)
{
        ephemerisDataStep = step;
        // automatic saving of the setting
        conf->setValue("astrocalc/ephemeris_data_step", step);
        emit ephemerisDataStepChanged(step);
}

int SolarSystem::getEphemerisDataStep() const
{
        return ephemerisDataStep;
}

void SolarSystem::setEphemerisDataLimit(int limit)
{
        ephemerisDataLimit = limit;
        emit ephemerisDataLimitChanged(limit);
}

int SolarSystem::getEphemerisDataLimit() const
{
        return ephemerisDataLimit;
}

void SolarSystem::setEphemerisLineThickness(int v)
{
        ephemerisLineThickness = v;
        // automatic saving of the setting
        conf->setValue("astrocalc/ephemeris_line_thickness", v);
        emit ephemerisLineThicknessChanged(v);
}

int SolarSystem::getEphemerisLineThickness() const
{
        return ephemerisLineThickness;
}

void SolarSystem::setEphemerisGenericMarkerColor(const Vec3f& color)
{
        if (color!=ephemerisGenericMarkerColor)
        {
                ephemerisGenericMarkerColor = color;
                emit ephemerisGenericMarkerColorChanged(color);
        }
}

Vec3f SolarSystem::getEphemerisGenericMarkerColor() const
{
        return ephemerisGenericMarkerColor;
}

void SolarSystem::setEphemerisSecondaryMarkerColor(const Vec3f& color)
{
        if (color!=ephemerisSecondaryMarkerColor)
        {
                ephemerisSecondaryMarkerColor = color;
                emit ephemerisSecondaryMarkerColorChanged(color);
        }
}

Vec3f SolarSystem::getEphemerisSecondaryMarkerColor() const
{
        return ephemerisSecondaryMarkerColor;
}

void SolarSystem::setEphemerisSelectedMarkerColor(const Vec3f& color)
{
        if (color!=ephemerisSelectedMarkerColor)
        {
                ephemerisSelectedMarkerColor = color;
                emit ephemerisSelectedMarkerColorChanged(color);
        }
}

Vec3f SolarSystem::getEphemerisSelectedMarkerColor() const
{
        return ephemerisSelectedMarkerColor;
}

void SolarSystem::setEphemerisMercuryMarkerColor(const Vec3f& color)
{
        if (color!=ephemerisMercuryMarkerColor)
        {
                ephemerisMercuryMarkerColor = color;
                emit ephemerisMercuryMarkerColorChanged(color);
        }
}

Vec3f SolarSystem::getEphemerisMercuryMarkerColor() const
{
        return ephemerisMercuryMarkerColor;
}

void SolarSystem::setEphemerisVenusMarkerColor(const Vec3f& color)
{
        if (color!=ephemerisVenusMarkerColor)
        {
                ephemerisVenusMarkerColor = color;
                emit ephemerisVenusMarkerColorChanged(color);
        }
}

Vec3f SolarSystem::getEphemerisVenusMarkerColor() const
{
        return ephemerisVenusMarkerColor;
}

void SolarSystem::setEphemerisMarsMarkerColor(const Vec3f& color)
{
        if (color!=ephemerisMarsMarkerColor)
        {
                ephemerisMarsMarkerColor = color;
                emit ephemerisMarsMarkerColorChanged(color);
        }
}

Vec3f SolarSystem::getEphemerisMarsMarkerColor() const
{
        return ephemerisMarsMarkerColor;
}

void SolarSystem::setEphemerisJupiterMarkerColor(const Vec3f& color)
{
        if (color!=ephemerisJupiterMarkerColor)
        {
                ephemerisJupiterMarkerColor = color;
                emit ephemerisJupiterMarkerColorChanged(color);
        }
}

Vec3f SolarSystem::getEphemerisJupiterMarkerColor() const
{
        return ephemerisJupiterMarkerColor;
}

void SolarSystem::setEphemerisSaturnMarkerColor(const Vec3f& color)
{
        if (color!=ephemerisSaturnMarkerColor)
        {
                ephemerisSaturnMarkerColor = color;
                emit ephemerisSaturnMarkerColorChanged(color);
        }
}

Vec3f SolarSystem::getEphemerisSaturnMarkerColor() const
{
        return ephemerisSaturnMarkerColor;
}

void SolarSystem::setFlagNativePlanetNames(bool b)
{
        if (b!=flagNativePlanetNames)
        {
                flagNativePlanetNames=b;
                for (const auto& p : qAsConst(systemPlanets))
                {
                        if (p->getPlanetType()==Planet::isPlanet || p->getPlanetType()==Planet::isMoon || p->getPlanetType()==Planet::isStar)
                                p->setFlagNativeName(flagNativePlanetNames);
                }
                updateI18n();
                emit flagNativePlanetNamesChanged(b);
        }
}

bool SolarSystem::getFlagNativePlanetNames() const
{
        return flagNativePlanetNames;
}

void SolarSystem::setFlagIsolatedTrails(bool b)
{
        if(b!=flagIsolatedTrails)
        {
                flagIsolatedTrails = b;
                recreateTrails();
                emit flagIsolatedTrailsChanged(b);
        }
}

bool SolarSystem::getFlagIsolatedTrails() const
{
        return flagIsolatedTrails;
}

int SolarSystem::getNumberIsolatedTrails() const
{
        return numberIsolatedTrails;
}

void SolarSystem::setNumberIsolatedTrails(int n)
{
        // [1..5] - valid range for trails
        numberIsolatedTrails = qBound(1, n, 5);

        if (getFlagIsolatedTrails())
                recreateTrails();

        emit numberIsolatedTrailsChanged(numberIsolatedTrails);
}

void SolarSystem::setFlagIsolatedOrbits(bool b)
{
        if(b!=flagIsolatedOrbits)
        {
                flagIsolatedOrbits = b;
                emit flagIsolatedOrbitsChanged(b);
                // Reinstall flag for orbits to renew visibility of orbits
                setFlagOrbits(getFlagOrbits());
        }
}

bool SolarSystem::getFlagIsolatedOrbits() const
{
        return flagIsolatedOrbits;
}

void SolarSystem::setFlagPlanetsOrbitsOnly(bool b)
{
        if(b!=flagPlanetsOrbitsOnly)
        {
                flagPlanetsOrbitsOnly = b;
                emit flagPlanetsOrbitsOnlyChanged(b);
                // Reinstall flag for orbits to renew visibility of orbits
                setFlagOrbits(getFlagOrbits());
        }
}

bool SolarSystem::getFlagPlanetsOrbitsOnly() const
{
        return flagPlanetsOrbitsOnly;
}

// Set/Get planets names color
void SolarSystem::setLabelsColor(const Vec3f& c)
{
        if (c!=Planet::getLabelColor())
        {
                Planet::setLabelColor(c);
                emit labelsColorChanged(c);
        }
}

Vec3f SolarSystem::getLabelsColor(void) const
{
        return Planet::getLabelColor();
}

// Set/Get orbits lines color
void SolarSystem::setOrbitsColor(const Vec3f& c)
{
        if (c!=Planet::getOrbitColor())
        {
                Planet::setOrbitColor(c);
                emit orbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getOrbitsColor(void) const
{
        return Planet::getOrbitColor();
}

void SolarSystem::setMajorPlanetsOrbitsColor(const Vec3f &c)
{
        if (c!=Planet::getMajorPlanetOrbitColor())
        {
                Planet::setMajorPlanetOrbitColor(c);
                emit majorPlanetsOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getMajorPlanetsOrbitsColor(void) const
{
        return Planet::getMajorPlanetOrbitColor();
}

void SolarSystem::setMinorPlanetsOrbitsColor(const Vec3f &c)
{
        if (c!=Planet::getMinorPlanetOrbitColor())
        {
                Planet::setMinorPlanetOrbitColor(c);
                emit minorPlanetsOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getMinorPlanetsOrbitsColor(void) const
{
        return Planet::getMinorPlanetOrbitColor();
}

void SolarSystem::setDwarfPlanetsOrbitsColor(const Vec3f &c)
{
        if (c!=Planet::getDwarfPlanetOrbitColor())
        {
                Planet::setDwarfPlanetOrbitColor(c);
                emit dwarfPlanetsOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getDwarfPlanetsOrbitsColor(void) const
{
        return Planet::getDwarfPlanetOrbitColor();
}

void SolarSystem::setMoonsOrbitsColor(const Vec3f &c)
{
        if (c!=Planet::getMoonOrbitColor())
        {
                Planet::setMoonOrbitColor(c);
                emit moonsOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getMoonsOrbitsColor(void) const
{
        return Planet::getMoonOrbitColor();
}

void SolarSystem::setCubewanosOrbitsColor(const Vec3f &c)
{
        if (c!=Planet::getCubewanoOrbitColor())
        {
                Planet::setCubewanoOrbitColor(c);
                emit cubewanosOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getCubewanosOrbitsColor(void) const
{
        return Planet::getCubewanoOrbitColor();
}

void SolarSystem::setPlutinosOrbitsColor(const Vec3f &c)
{
        if (c!=Planet::getPlutinoOrbitColor())
        {
                Planet::setPlutinoOrbitColor(c);
                emit plutinosOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getPlutinosOrbitsColor(void) const
{
        return Planet::getPlutinoOrbitColor();
}

void SolarSystem::setScatteredDiskObjectsOrbitsColor(const Vec3f &c)
{
        if (c!=Planet::getScatteredDiscObjectOrbitColor())
        {
                Planet::setScatteredDiscObjectOrbitColor(c);
                emit scatteredDiskObjectsOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getScatteredDiskObjectsOrbitsColor(void) const
{
        return Planet::getScatteredDiscObjectOrbitColor();
}

void SolarSystem::setOortCloudObjectsOrbitsColor(const Vec3f &c)
{
        if (c!=Planet::getOortCloudObjectOrbitColor())
        {
                Planet::setOortCloudObjectOrbitColor(c);
                emit oortCloudObjectsOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getOortCloudObjectsOrbitsColor(void) const
{
        return Planet::getOortCloudObjectOrbitColor();
}

void SolarSystem::setCometsOrbitsColor(const Vec3f& c)
{
        if (c!=Planet::getCometOrbitColor())
        {
                Planet::setCometOrbitColor(c);
                emit cometsOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getCometsOrbitsColor(void) const
{
        return Planet::getCometOrbitColor();
}

void SolarSystem::setSednoidsOrbitsColor(const Vec3f& c)
{
        if (c!=Planet::getSednoidOrbitColor())
        {
                Planet::setSednoidOrbitColor(c);
                emit sednoidsOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getSednoidsOrbitsColor(void) const
{
        return Planet::getSednoidOrbitColor();
}

void SolarSystem::setInterstellarOrbitsColor(const Vec3f& c)
{
        if (c!=Planet::getInterstellarOrbitColor())
        {
                Planet::setInterstellarOrbitColor(c);
                emit interstellarOrbitsColorChanged(c);
        }
}

Vec3f SolarSystem::getInterstellarOrbitsColor(void) const
{
        return Planet::getInterstellarOrbitColor();
}

void SolarSystem::setMercuryOrbitColor(const Vec3f &c)
{
        if (c!=Planet::getMercuryOrbitColor())
        {
                Planet::setMercuryOrbitColor(c);
                emit mercuryOrbitColorChanged(c);
        }
}

Vec3f SolarSystem::getMercuryOrbitColor(void) const
{
        return Planet::getMercuryOrbitColor();
}

void SolarSystem::setVenusOrbitColor(const Vec3f &c)
{
        if (c!=Planet::getVenusOrbitColor())
        {
                Planet::setVenusOrbitColor(c);
                emit venusOrbitColorChanged(c);
        }
}

Vec3f SolarSystem::getVenusOrbitColor(void) const
{
        return Planet::getVenusOrbitColor();
}

void SolarSystem::setEarthOrbitColor(const Vec3f &c)
{
        if (c!=Planet::getEarthOrbitColor())
        {
                Planet::setEarthOrbitColor(c);
                emit earthOrbitColorChanged(c);
        }
}

Vec3f SolarSystem::getEarthOrbitColor(void) const
{
        return Planet::getEarthOrbitColor();
}

void SolarSystem::setMarsOrbitColor(const Vec3f &c)
{
        if (c!=Planet::getMarsOrbitColor())
        {
                Planet::setMarsOrbitColor(c);
                emit marsOrbitColorChanged(c);
        }
}

Vec3f SolarSystem::getMarsOrbitColor(void) const
{
        return Planet::getMarsOrbitColor();
}

void SolarSystem::setJupiterOrbitColor(const Vec3f &c)
{
        if (c!=Planet::getJupiterOrbitColor())
        {
                Planet::setJupiterOrbitColor(c);
                emit jupiterOrbitColorChanged(c);
        }
}

Vec3f SolarSystem::getJupiterOrbitColor(void) const
{
        return Planet::getJupiterOrbitColor();
}

void SolarSystem::setSaturnOrbitColor(const Vec3f &c)
{
        if (c!=Planet::getSaturnOrbitColor())
        {
                Planet::setSaturnOrbitColor(c);
                emit saturnOrbitColorChanged(c);
        }
}

Vec3f SolarSystem::getSaturnOrbitColor(void) const
{
        return Planet::getSaturnOrbitColor();
}

void SolarSystem::setUranusOrbitColor(const Vec3f &c)
{
        if (c!=Planet::getUranusOrbitColor())
        {
                Planet::setUranusOrbitColor(c);
                emit uranusOrbitColorChanged(c);
        }
}

Vec3f SolarSystem::getUranusOrbitColor(void) const
{
        return Planet::getUranusOrbitColor();
}

void SolarSystem::setNeptuneOrbitColor(const Vec3f &c)
{
        if (c!=Planet::getNeptuneOrbitColor())
        {
                Planet::setNeptuneOrbitColor(c);
                emit neptuneOrbitColorChanged(c);
        }
}

Vec3f SolarSystem::getNeptuneOrbitColor(void) const
{
        return Planet::getNeptuneOrbitColor();
}

// Set/Get if Moon display is scaled
void SolarSystem::setFlagMoonScale(bool b)
{
        if(b!=flagMoonScale)
        {
                if (b) getMoon()->setSphereScale(moonScale);
                else getMoon()->setSphereScale(1);
                flagMoonScale = b;
                emit flagMoonScaleChanged(b);
        }
}

// Set/Get Moon display scaling factor. This goes directly to the Moon object.
void SolarSystem::setMoonScale(double f)
{
        if(!fuzzyEquals(moonScale, f))
        {
                moonScale = f;
                if (flagMoonScale)
                        getMoon()->setSphereScale(moonScale);
                emit moonScaleChanged(f);
        }
}

// Set if minor body display is scaled. This flag will be queried by all Planet objects except for the Moon.
void SolarSystem::setFlagMinorBodyScale(bool b)
{
        if(b!=flagMinorBodyScale)
        {
                flagMinorBodyScale = b;

                double newScale = b ? minorBodyScale : 1.0;
                //update the bodies with the new scale
                for (const auto& p : qAsConst(systemPlanets))
                {
                        if(p == moon) continue;
                        if (p->getPlanetType()!=Planet::isPlanet && p->getPlanetType()!=Planet::isStar)
                                p->setSphereScale(newScale);
                }
                emit flagMinorBodyScaleChanged(b);
        }
}

// Set minor body display scaling factor. This will be queried by all Planet objects except for the Moon.
void SolarSystem::setMinorBodyScale(double f)
{
        if(!fuzzyEquals(minorBodyScale, f))
        {
                minorBodyScale = f;
                if(flagMinorBodyScale) //update the bodies with the new scale
                {
                        for (const auto& p : qAsConst(systemPlanets))
                        {
                                if(p == moon) continue;
                                if (p->getPlanetType()!=Planet::isPlanet && p->getPlanetType()!=Planet::isStar)
                                        p->setSphereScale(minorBodyScale);
                        }
                }
                emit minorBodyScaleChanged(f);
        }
}

// Set if Planet display is scaled
void SolarSystem::setFlagPlanetScale(bool b)
{
        if(b!=flagPlanetScale)
        {
                double scale=(b ? planetScale : 1.);
                for (auto& p : systemPlanets)
                {
                        if (p->pType==Planet::isPlanet)
                                p->setSphereScale(scale);
                }
                flagPlanetScale = b;
                emit flagPlanetScaleChanged(b);
        }
}

// Set Moon display scaling factor.
void SolarSystem::setPlanetScale(double f)
{
        if(!fuzzyEquals(planetScale, f))
        {
                planetScale = f;
                if (flagPlanetScale)
                        for (auto& p : systemPlanets)
                        {
                                if (p->pType==Planet::isPlanet)
                                        p->setSphereScale(planetScale);
                        }
                emit planetScaleChanged(f);
        }
}

// Set if Sun display is scaled
void SolarSystem::setFlagSunScale(bool b)
{
        if(b!=flagSunScale)
        {
                if (b) getSun()->setSphereScale(sunScale);
                else getSun()->setSphereScale(1);
                flagSunScale = b;
                emit flagSunScaleChanged(b);
        }
}

// Set Sun display scaling factor. This goes directly to the Sun object.
void SolarSystem::setSunScale(double f)
{
        if(!fuzzyEquals(sunScale, f))
        {
                sunScale = f;
                if (flagSunScale)
                        getSun()->setSphereScale(sunScale);
                emit sunScaleChanged(f);
        }
}

// Set selected planets by englishName
void SolarSystem::setSelected(const QString& englishName)
{
        setSelected(searchByEnglishName(englishName));
}

// Get the list of all the planet english names
QStringList SolarSystem::getAllPlanetEnglishNames() const
{
        QStringList res;
        for (const auto& p : systemPlanets)
                res.append(p->getEnglishName());
        return res;
}

QStringList SolarSystem::getAllPlanetLocalizedNames() const
{
        QStringList res;
        for (const auto& p : systemPlanets)
                res.append(p->getNameI18n());
        return res;
}

QStringList SolarSystem::getAllMinorPlanetCommonEnglishNames() const
{
        QStringList res;
        for (const auto& p : systemMinorBodies)
                res.append(p->getCommonEnglishName());
        return res;
}


// GZ TODO: This could be modified to only delete&reload the minor objects. For now, we really load both parts again like in the 0.10?-0.15 series.
void SolarSystem::reloadPlanets()
{
        // Save flag states
        const bool flagScaleMoon = getFlagMoonScale();
        const double moonScale = getMoonScale();
        const bool flagScaleMinorBodies=getFlagMinorBodyScale();
        const double minorScale= getMinorBodyScale();
        const bool flagPlanets = getFlagPlanets();
        const bool flagHints = getFlagHints();
        const bool flagLabels = getFlagLabels();
        const bool flagOrbits = getFlagOrbits();
        const bool flagNative = getFlagNativePlanetNames();
        bool hasSelection = false;

        // Save observer location (fix for LP bug # 969211)
        // TODO: This can probably be done better with a better understanding of StelObserver --BM
        StelCore* core = StelApp::getInstance().getCore();
        const StelLocation loc = core->getCurrentLocation();
        StelObjectMgr* objMgr = GETSTELMODULE(StelObjectMgr);

        // Whether any planet are selected? Save the current selection...
        const QList<StelObjectP> selectedObject = objMgr->getSelectedObject("Planet");
        if (!selectedObject.isEmpty())
        {
                // ... unselect current planet.
                hasSelection = true;
                objMgr->unSelect();
        }
        // Unload all Solar System objects
        selected.clear();//Release the selected one

        // GZ TODO in case this methods gets converted to only reload minor bodies: Only delete Orbits which are not referenced by some Planet.
        for (auto* orb : qAsConst(orbits))
        {
                delete orb;
        }
        orbits.clear();

        sun.clear();
        moon.clear();
        earth.clear();
        Planet::texEarthShadow.clear(); //Loaded in loadPlanets()

        delete allTrails;
        allTrails = Q_NULLPTR;

        for (const auto& p : qAsConst(systemPlanets))
        {
                p->satellites.clear();
        }
        systemPlanets.clear();
        systemMinorBodies.clear();
        // Memory leak? What's the proper way of cleaning shared pointers?

        // Also delete Comet textures (loaded in loadPlanets()
        Comet::tailTexture.clear();
        Comet::comaTexture.clear();

        // Re-load the ssystem_major.ini and ssystem_minor.ini file
        loadPlanets();        
        computePositions(core->getJDE(), getSun());
        setSelected("");
        recreateTrails();
        
        // Restore observer location
        core->moveObserverTo(loc, 0., 0.);

        // Restore flag states
        setFlagMoonScale(flagScaleMoon);
        setMoonScale(moonScale);
        setFlagMinorBodyScale(flagScaleMinorBodies);
        setMinorBodyScale(1.0); // force-reset first to really reach the objects in the next call.
        setMinorBodyScale(minorScale);
        setFlagPlanets(flagPlanets);
        setFlagHints(flagHints);
        setFlagLabels(flagLabels);
        setFlagOrbits(flagOrbits);
        setFlagNativePlanetNames(flagNative);

        // Restore translations
        updateI18n();

        if (hasSelection)
        {
                // Restore selection...
                StelObjectP obj = selectedObject[0];
                objMgr->findAndSelect(obj->getEnglishName(), obj->getType());
        }

        emit solarSystemDataReloaded();
}

// Set the algorithm for computation of apparent magnitudes for planets in case  observer on the Earth
void SolarSystem::setApparentMagnitudeAlgorithmOnEarth(QString algorithm)
{
        Planet::setApparentMagnitudeAlgorithm(algorithm);
        emit apparentMagnitudeAlgorithmOnEarthChanged(algorithm);
}

// Get the algorithm used for computation of apparent magnitudes for planets in case  observer on the Earth
QString SolarSystem::getApparentMagnitudeAlgorithmOnEarth() const
{
        return Planet::getApparentMagnitudeAlgorithmString();
}

void SolarSystem::setFlagDrawMoonHalo(bool b)
{
        Planet::drawMoonHalo=b;
        emit flagDrawMoonHaloChanged(b);
}

bool SolarSystem::getFlagDrawMoonHalo() const
{
        return Planet::drawMoonHalo;
}

void SolarSystem::setFlagDrawSunHalo(bool b)
{
        Planet::drawSunHalo=b;
        emit flagDrawSunHaloChanged(b);
}

bool SolarSystem::getFlagDrawSunHalo() const
{
        return Planet::drawSunHalo;
}

void SolarSystem::setFlagPermanentOrbits(bool b)
{
        Planet::permanentDrawingOrbits=b;
        emit flagPermanentOrbitsChanged(b);
}

bool SolarSystem::getFlagPermanentOrbits() const
{
        return Planet::permanentDrawingOrbits;
}

void SolarSystem::setOrbitsThickness(int v)
{
        Planet::orbitsThickness=v;
        emit orbitsThicknessChanged(v);
}

int SolarSystem::getOrbitsThickness() const
{
        return Planet::orbitsThickness;
}

void SolarSystem::setGrsLongitude(int longitude)
{
        RotationElements::grsLongitude = longitude;
        // automatic saving of the setting
        conf->setValue("astro/grs_longitude", longitude);
        emit grsLongitudeChanged(longitude);
}

int SolarSystem::getGrsLongitude() const
{
        return static_cast<int>(RotationElements::grsLongitude);
}

void SolarSystem::setGrsDrift(double drift)
{
        RotationElements::grsDrift = drift;
        // automatic saving of the setting
        conf->setValue("astro/grs_drift", drift);
        emit grsDriftChanged(drift);
}

double SolarSystem::getGrsDrift() const
{
        return RotationElements::grsDrift;
}

void SolarSystem::setGrsJD(double JD)
{
        RotationElements::grsJD = JD;
        // automatic saving of the setting
        conf->setValue("astro/grs_jd", JD);
        emit grsJDChanged(JD);
}

double SolarSystem::getGrsJD()
{
        return RotationElements::grsJD;
}

void SolarSystem::setFlagEarthShadowEnlargementDanjon(bool b)
{
        earthShadowEnlargementDanjon=b;
        emit earthShadowEnlargementDanjonChanged(b);
}

bool SolarSystem::getFlagEarthShadowEnlargementDanjon() const
{
        return earthShadowEnlargementDanjon;
}

void SolarSystem::setOrbitColorStyle(QString style)
{
        if (style.toLower()=="groups")
                Planet::orbitColorStyle = Planet::ocsGroups;
        else if (style.toLower()=="major_planets")
                Planet::orbitColorStyle = Planet::ocsMajorPlanets;
        else
                Planet::orbitColorStyle = Planet::ocsOneColor;
}

QString SolarSystem::getOrbitColorStyle() const
{
        QString r = "one_color";
        switch (Planet::orbitColorStyle)
        {
                case Planet::ocsOneColor:
                        r = "one_color";
                        break;
                case Planet::ocsGroups:
                        r = "groups";
                        break;
                case Planet::ocsMajorPlanets:
                        r = "major_planets";
                        break;
        }
        return r;
}

// TODO: To make the code better understandable, get rid of planet->computeModelMatrix(trans, true) here.
QPair<double, PlanetP> SolarSystem::getSolarEclipseFactor(const StelCore* core) const
{
        PlanetP p;
        const Vec3d Lp = sun->getEclipticPos() + sun->getAberrationPush();
        const Vec3d P3 = core->getObserverHeliocentricEclipticPos();
        const double RS = sun->getEquatorialRadius();

        double final_illumination = 1.0;

        for (const auto& planet : systemPlanets)
        {
                if(planet == sun || planet == core->getCurrentPlanet())
                        continue;

                Mat4d trans;
                planet->computeModelMatrix(trans, true);

                const Vec3d C = trans * Vec3d(0., 0., 0.);
                const double radius = planet->getEquatorialRadius();

                Vec3d v1 = Lp - P3;
                Vec3d v2 = C - P3;
                const double L = v1.norm();
                const double l = v2.norm();
                v1 /= L;
                v2 /= l;

                const double R = RS / L;
                const double r = radius / l;
                const double d = ( v1 - v2 ).norm();
                double illumination;

                if(d >= R + r) // distance too far
                {
                        illumination = 1.0;
                }
                else if(d <= r - R) // umbra
                {
                        illumination = 0.0;
                }
                else if(d <= R - r) // penumbra completely inside
                {
                        illumination = 1.0 - r * r / (R * R);
                }
                else // penumbra partially inside
                {
                        const double x = (R * R + d * d - r * r) / (2.0 * d);

                        const double alpha = std::acos(x / R);
                        const double beta = std::acos((d - x) / r);

                        const double AR = R * R * (alpha - 0.5 * std::sin(2.0 * alpha));
                        const double Ar = r * r * (beta - 0.5 * std::sin(2.0 * beta));
                        const double AS = R * R * 2.0 * std::asin(1.0);

                        illumination = 1.0 - (AR + Ar) / AS;
                }

                if(illumination < final_illumination)
                {
                        final_illumination = illumination;
                        p = planet;
                }
        }

        return QPair<double, PlanetP>(final_illumination, p);
}

// Retrieve Radius of Umbra and Penumbra at the distance of the Moon.
// Returns a pair (umbra, penumbra) in (geocentric_arcseconds, AU, geometric_AU).
// * sizes in arcseconds are the usual result found as Bessel element in eclipse literature.
//   It includes scaling for effects of atmosphere either after Chauvenet (2%) or after Danjon. (see Espenak: 5000 Years Canon of Lunar Eclipses.)
// * sizes in AU are the same, converted back to AU in Lunar distance.
// * sizes in geometric_AU derived from pure geometrical evaluations without scalings applied.
QPair<Vec3d,Vec3d> SolarSystem::getEarthShadowRadiiAtLunarDistance() const
{
        // Note: The application of this shadow enlargement is not according to the books, but looks close enough for now.
        static const double sun2earth=sun->getEquatorialRadius() / earth->getEquatorialRadius();
        PlanetP sun=getSun();
        PlanetP moon=getMoon();
        PlanetP earth=getEarth();
        const double lunarDistance=moon->getEclipticPos().norm(); // Lunar distance [AU]
        const double earthDistance=earth->getHeliocentricEclipticPos().norm(); // Earth distance [AU]
        const double sunHP =asin(earth->getEquatorialRadius()/earthDistance) * M_180_PI*3600.; // arcsec.
        const double moonHP=asin(earth->getEquatorialRadius()/lunarDistance) * M_180_PI*3600.; // arcsec.
        const double sunSD  =atan(sun->getEquatorialRadius()/earthDistance)  * M_180_PI*3600.; // arcsec.

        // Compute umbra radius at lunar distance.
        const double lUmbra=earthDistance/(sun2earth-1.); // length of earth umbra [AU]
        const double rUmbraAU=earth->getEquatorialRadius()*(lUmbra-lunarDistance)/lUmbra; // radius of earth shadow at lunar distance [AU]
        // Penumbra:
        const double lPenumbra=earthDistance/(sun2earth + 1.); // distance between earth and point between sun and earth where penumbral border rays intersect
        const double rPenumbraAU=earth->getEquatorialRadius()*(lPenumbra+lunarDistance)/lPenumbra; // radius of penumbra at Lunar distance [AU]

        //Classical Bessel elements instead
        double f1, f2;
        if (earthShadowEnlargementDanjon)
        {
                static const double danjonScale=1+1./85.-1./594.; // ~1.01, shadow magnification factor (see Espenak 5000 years Canon)
                f1=danjonScale*moonHP + sunHP + sunSD; // penumbra radius, arcsec
                f2=danjonScale*moonHP + sunHP - sunSD; // umbra radius, arcsec
        }
        else
        {
                const double mHP1=0.998340*moonHP;
                f1=1.02*(mHP1 + sunHP + sunSD); // penumbra radius, arcsec
                f2=1.02*(mHP1 + sunHP - sunSD); // umbra radius, arcsec
        }
        const double f1_AU=tan(f1/3600.*M_PI_180)*lunarDistance;
        const double f2_AU=tan(f2/3600.*M_PI_180)*lunarDistance;
        return QPair<Vec3d,Vec3d>(Vec3d(f2, f2_AU, rUmbraAU), Vec3d(f1, f1_AU, rPenumbraAU));
}

bool SolarSystem::removeMinorPlanet(QString name)
{
        PlanetP candidate = searchMinorPlanetByEnglishName(name);
        if (!candidate)
        {
                qWarning() << "Cannot remove planet " << name << ": Not found.";
                return false;
        }
        Orbit* orbPtr=static_cast<Orbit*>(candidate->orbitPtr);
        if (orbPtr)
                orbits.removeOne(orbPtr);
        systemPlanets.removeOne(candidate);
        systemMinorBodies.removeOne(candidate);
        candidate.clear();
        return true;
}

void SolarSystem::onNewSurvey(HipsSurveyP survey)
{
        // For the moment we only consider the survey url to decide if we
        // assign it to a planet.  It would be better to use some property
        // for that.
        QString planetName = QUrl(survey->getUrl()).fileName();
        PlanetP pl = searchByEnglishName(planetName);
        if (!pl || pl->survey)
                return;
        pl->survey = survey;
        survey->setProperty("planet", pl->getCommonEnglishName());
        // Not visible by default for the moment.
        survey->setProperty("visible", false);
}

Stellarium / stellarium / 3996069357

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