3996069357

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Committed by Ruslan Kabatsayev

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Shorten some lines

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/src/core/modules/LandscapeMgr.cpp

/*
 * Stellarium
 * Copyright (C) 2006 Fabien Chereau
 * Copyright (C) 2010 Bogdan Marinov (add/remove landscapes feature)
 * Copyright (C) 2011 Alexander Wolf
 * Copyright (C) 2012 Timothy Reaves
 *
 * 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 "StelActionMgr.hpp"
#include "LandscapeMgr.hpp"
#include "Landscape.hpp"
#include "AtmospherePreetham.hpp"
#include "AtmosphereShowMySky.hpp"
#include "StelApp.hpp"
#include "SolarSystem.hpp"
#include "StelCore.hpp"
#include "StelLocaleMgr.hpp"
#include "StelModuleMgr.hpp"
#include "StelFileMgr.hpp"
#include "Planet.hpp"
#include "StelIniParser.hpp"
#include "StelSkyDrawer.hpp"
#include "StelPainter.hpp"
#include "StelPropertyMgr.hpp"
#include "StelUtils.hpp"

#include <private/qzipreader_p.h>
#include <QTimer>
#include <QDebug>
#include <QSettings>
#include <QString>
#include <QDir>
#include <QDirIterator>
#include <QFile>
#include <QTemporaryFile>
#include <QMouseEvent>
#include <QPainter>
#include <QElapsedTimer>
#include <QOpenGLPaintDevice>

#include <stdexcept>

namespace
{
constexpr char ATMOSPHERE_MODEL_CONFIG_KEY[]="landscape/atmosphere_model";
constexpr char ATMOSPHERE_MODEL_PATH_CONFIG_KEY[]="landscape/atmosphere_model_path";
constexpr char ATMOSPHERE_ECLIPSE_SIM_QUALITY_CONFIG_KEY[]="landscape/atmosphere_eclipse_simulation_quality";
constexpr char ATMOSPHERE_MODEL_CONF_VAL_PREETHAM[]="preetham";
constexpr char ATMOSPHERE_MODEL_CONF_VAL_SHOWMYSKY[]="showmysky";
constexpr char ATMOSPHERE_MODEL_CONF_VAL_DEFAULT[]="preetham";
}

Cardinals::Cardinals()
        : color(0.6f,0.2f,0.2f)
{
        QSettings* conf = StelApp::getInstance().getSettings();
        Q_ASSERT(conf);
        screenFontSize = StelApp::getInstance().getScreenFontSize();
        propMgr = StelApp::getInstance().getStelPropertyManager();
        // Default font size is 24
        font4WCR.setPixelSize(conf->value("viewing/cardinal_font_size", screenFontSize+11).toInt());
        // Default font size is 18
        font8WCR.setPixelSize(conf->value("viewing/ordinal_font_size", screenFontSize+5).toInt());
        // Draw the principal wind points even smaller.
        font16WCR.setPixelSize(conf->value("viewing/16wcr_font_size", screenFontSize+2).toInt());

        // English names for cardinals
        labels = {
                {   dN,  "N" }, {   dS,  "S" }, {   dE,  "E" }, {   dW,  "W" },
                {  dNE, "NE" }, {  dSE, "SE" }, {  dSW, "SW" }, {  dNW, "NW" },
                { dNNE,"NNE" }, { dENE,"ENE" }, { dESE,"ESE" }, { dSSE,"SSE" },
                { dSSW,"SSW" }, { dWSW,"WSW" }, { dWNW,"WNW" }, { dNNW,"NNW" }
        };
}

Cardinals::~Cardinals()
{
}

const QMap<Cardinals::CompassDirection, Vec3f> Cardinals::rose4winds = {
        { Cardinals::dN, Vec3f(-1.f, 0.f, 0.f) }, { Cardinals::dS, Vec3f(1.f,  0.f, 0.f) },
        { Cardinals::dE, Vec3f( 0.f, 1.f, 0.f) }, { Cardinals::dW, Vec3f(0.f, -1.f, 0.f) }
};
const QMap<Cardinals::CompassDirection, Vec3f> Cardinals::rose8winds = {
        { Cardinals::dNE, Vec3f(-1.f,  1.f, 0.f) }, { Cardinals::dSE, Vec3f( 1.f,  1.f, 0.f) },
        { Cardinals::dSW, Vec3f( 1.f, -1.f, 0.f) }, { Cardinals::dNW, Vec3f(-1.f, -1.f, 0.f) }
};
const QMap<Cardinals::CompassDirection, Vec3f> Cardinals::rose16winds = {
        { dNNE, Vec3f(-1.f,   cp, 0.f) }, { dENE, Vec3f( -cp,  1.f, 0.f) },
        { dESE, Vec3f(  cp,  1.f, 0.f) }, { dSSE, Vec3f( 1.f,   cp, 0.f) },
        { dSSW, Vec3f( 1.f,  -cp, 0.f) }, { dWSW, Vec3f(  cp, -1.f, 0.f) },
        { dWNW, Vec3f( -cp, -1.f, 0.f) }, { dNNW, Vec3f(-1.f,  -cp, 0.f) }
};

void Cardinals::update(double deltaTime)
{
        fader4WCR.update(static_cast<int>(deltaTime*1000));
        fader8WCR.update(static_cast<int>(deltaTime*1000));
        fader16WCR.update(static_cast<int>(deltaTime*1000));
}

void Cardinals::setFadeDuration(float duration)
{
        fader4WCR.setDuration(static_cast<int>(duration*1000.f));
        fader8WCR.setDuration(static_cast<int>(duration*1000.f));
        fader16WCR.setDuration(static_cast<int>(duration*1000.f));
}

// Draw the cardinals points : N S E W and the subcardinal and sub-subcardinal.
// Handles special cases at poles
void Cardinals::draw(const StelCore* core, double latitude) const
{
        // fun polar special cases: no cardinals!
        if ((fabs(latitude - 90.0) < 1e-10) || (fabs(latitude + 90.0) < 1e-10))
                return;

        if (fader4WCR.getInterstate()>0.f)
        {
                const StelProjectorP prj = core->getProjection(StelCore::FrameAltAz, StelCore::RefractionOff);
                const float ppx = static_cast<float>(core->getCurrentStelProjectorParams().devicePixelsPerPixel);
                StelPainter sPainter(prj);
                sPainter.setFont(font4WCR);
                float sshift=0.f, bshift=0.f, cshift=0.f, vshift=1.f;
                bool flagMask = (core->getProjection(StelCore::FrameJ2000)->getMaskType() != StelProjector::MaskDisk);
                if (propMgr->getProperty("SpecialMarkersMgr.compassMarksDisplayed")->getValue().toBool())
                        vshift = static_cast<float>(screenFontSize + 12)*ppx;

                Vec3f xy;
                sPainter.setColor(color, fader4WCR.getInterstate());
                sPainter.setBlending(true);
                QMapIterator<Cardinals::CompassDirection, Vec3f> it4w(rose4winds);
                while(it4w.hasNext())
                {
                        it4w.next();
                        QString directionLabel = labels.value(it4w.key(), "");

                        if (flagMask)
                                sshift = ppx*static_cast<float>(sPainter.getFontMetrics().boundingRect(directionLabel).width())*0.5f;

                        if (prj->project(it4w.value(), xy))
                        {
                                Vec3f up(it4w.value()[0], it4w.value()[1], 1.f*M_PI_180f);
                                Vec3f upPrj;
                                prj->project(up, upPrj);
                                float dx=upPrj[0]-xy[0];
                                float dy=upPrj[1]-xy[1];
                                float textAngle=atan2(dx, dy);
                                sPainter.drawText(xy[0], xy[1], directionLabel, -textAngle*M_180_PIf, -sshift, vshift, true);
                        }
                }

                if (fader8WCR.getInterstate()>0.f)
                {
                        float minFader = qMin(fader4WCR.getInterstate(), fader8WCR.getInterstate());
                        sPainter.setColor(color, minFader);
                        sPainter.setFont(font8WCR);

                        QMapIterator<Cardinals::CompassDirection, Vec3f> it8w(rose8winds);
                        while(it8w.hasNext())
                        {
                                it8w.next();
                                QString directionLabel = labels.value(it8w.key(), "");

                                if (flagMask)
                                        bshift = ppx*static_cast<float>(sPainter.getFontMetrics().boundingRect(directionLabel).width())*0.5f;

                                if (prj->project(it8w.value(), xy))
                                {
                                        Vec3f up(it8w.value()[0], it8w.value()[1], 1.f*M_PI_180f);
                                        Vec3f upPrj;
                                        prj->project(up, upPrj);
                                        float dx=upPrj[0]-xy[0];
                                        float dy=upPrj[1]-xy[1];
                                        float textAngle=atan2(dx, dy);
                                        sPainter.drawText(xy[0], xy[1], directionLabel, -textAngle*M_180_PIf, -bshift, vshift, true);
                                }
                        }

                        if (fader16WCR.getInterstate()>0.f)
                        {
                                sPainter.setColor(color, qMin(minFader, fader16WCR.getInterstate()));
                                sPainter.setFont(font16WCR);

                                QMapIterator<Cardinals::CompassDirection, Vec3f> it16w(rose16winds);
                                while(it16w.hasNext())
                                {
                                        it16w.next();
                                        QString directionLabel = labels.value(it16w.key(), "");

                                        if (flagMask)
                                                cshift = ppx*static_cast<float>(sPainter.getFontMetrics().boundingRect(directionLabel).width())*0.5f;

                                        if (prj->project(it16w.value(), xy))
                                        {
                                                Vec3f up(it16w.value()[0], it16w.value()[1], 1.f*M_PI_180f);
                                                Vec3f upPrj;
                                                prj->project(up, upPrj);
                                                float dx=upPrj[0]-xy[0];
                                                float dy=upPrj[1]-xy[1];
                                                float textAngle=atan2(dx, dy);
                                                sPainter.drawText(xy[0], xy[1], directionLabel, -textAngle*M_180_PIf, -cshift, vshift, true);
                                        }
                                }
                        }
                }
        }
}

// Translate cardinal labels with gettext to current sky language and update font for the language
void Cardinals::updateI18n()
{
        labels = {
                // TRANSLATORS: North
                { dN,        qc_("N",   "compass direction") },
                // TRANSLATORS: South
                { dS,        qc_("S",   "compass direction") },
                // TRANSLATORS: East
                { dE,        qc_("E",   "compass direction") },
                // TRANSLATORS: West
                { dW,        qc_("W",   "compass direction") },
                // TRANSLATORS: Northeast
                { dNE,        qc_("NE",  "compass direction") },
                // TRANSLATORS: Southeast
                { dSE,        qc_("SE",  "compass direction") },
                // TRANSLATORS: Southwest
                { dSW,        qc_("SW",  "compass direction") },
                // TRANSLATORS: Northwest
                { dNW,        qc_("NW",  "compass direction") },
                // TRANSLATORS: North-northeast
                { dNNE,        qc_("NNE", "compass direction") },
                // TRANSLATORS: East-northeast
                { dENE,        qc_("ENE", "compass direction") },
                // TRANSLATORS: East-southeast
                { dESE,        qc_("ESE", "compass direction") },
                // TRANSLATORS: South-southeast
                { dSSE,        qc_("SSE", "compass direction") },
                // TRANSLATORS: South-southwest
                { dSSW,        qc_("SSW", "compass direction") },
                // TRANSLATORS: West-southwest
                { dWSW,        qc_("WSW", "compass direction") },
                // TRANSLATORS: West-northwest
                { dWNW, qc_("WNW", "compass direction") },
                // TRANSLATORS: North-northwest
                { dNNW,        qc_("NNW", "compass direction") }
        };
}

LandscapeMgr::LandscapeMgr()
        : StelModule()
        , atmosphere(Q_NULLPTR)
        , cardinalPoints(Q_NULLPTR)
        , landscape(Q_NULLPTR)
        , oldLandscape(Q_NULLPTR)
        , messageTimer(new QTimer(this))
        , flagLandscapeSetsLocation(false)
        , flagLandscapeAutoSelection(false)
        , flagLightPollutionFromDatabase(false)
        , atmosphereNoScatter(false)
        , flagPolyLineDisplayedOnly(false)
        , polyLineThickness(1)
        , flagLandscapeUseMinimalBrightness(false)
        , defaultMinimalBrightness(0.01)
        , flagLandscapeSetsMinimalBrightness(false)
        , flagEnvironmentAutoEnabling(false)
{
        setObjectName("LandscapeMgr"); // should be done by StelModule's constructor.

        //Note: The first entry in the list is used as the default 'default landscape' in removeLandscape().
        packagedLandscapeIDs = (QStringList() << "guereins");
        QDirIterator directories(StelFileMgr::getInstallationDir()+"/landscapes/", QDir::Dirs | QDir::NoSymLinks | QDir::NoDotAndDotDot, QDirIterator::Subdirectories);
        while(directories.hasNext())
        {
                directories.next();
                packagedLandscapeIDs << directories.fileName();
        }
        packagedLandscapeIDs.removeDuplicates();
        landscapeCache.clear();

        messageTimer->setInterval(5000);
        messageTimer->setSingleShot(true);
        connect(messageTimer, &QTimer::timeout, this, &LandscapeMgr::clearMessage);
}

LandscapeMgr::~LandscapeMgr()
{
        delete cardinalPoints;
        if (oldLandscape)
        {
                delete oldLandscape;
                oldLandscape=Q_NULLPTR;
        }
        delete landscape;
        landscape = Q_NULLPTR;
        qDebug() << "LandscapeMgr: Clearing cache of" << landscapeCache.size() << "landscapes totalling about " << landscapeCache.totalCost() << "MB.";
        landscapeCache.clear(); // deletes all objects within.
}

/*************************************************************************
 Reimplementation of the getCallOrder method
*************************************************************************/
double LandscapeMgr::getCallOrder(StelModuleActionName actionName) const
{
        if (actionName==StelModule::ActionDraw)
                return StelApp::getInstance().getModuleMgr().getModule("SporadicMeteorMgr")->getCallOrder(actionName)+20;
        if (actionName==StelModule::ActionUpdate)
                return StelApp::getInstance().getModuleMgr().getModule("SolarSystem")->getCallOrder(actionName)+10;
        // GZ The next 2 lines are only required to test landscape transparency. They should be commented away for releases.
        if (actionName==StelModule::ActionHandleMouseClicks)
                return StelApp::getInstance().getModuleMgr().getModule("StelMovementMgr")->getCallOrder(actionName)-1;
        return 0.;
}

void LandscapeMgr::update(double deltaTime)
{
        if(needToRecreateAtmosphere && !loadingAtmosphere)
                createAtmosphere();

        const auto core = StelApp::getInstance().getCore();
        const auto drawer = core->getSkyDrawer();

        if(loadingAtmosphere && loadingAtmosphere->isLoading())
        {
                try
                {
                        // Use no more than 1/60th of a second for this batch of loading
                        QElapsedTimer timer;
                        timer.start();
                        Atmosphere::LoadingStatus status;
                        while(loadingAtmosphere->isLoading() && timer.elapsed() < 1000/60)
                                status = loadingAtmosphere->stepDataLoading();
                        if(loadingAtmosphere->isLoading())
                        {
                                setAtmosphereShowMySkyStoppedWithError(false);
                                const auto percentDone = std::lround(100.*status.stepsDone/status.stepsToDo);
                                setAtmosphereShowMySkyStatusText(QString("%1 %2% %3").arg(q_("Loading..."), QString::number(percentDone), qc_("done","percentage of done")));
                                qDebug() << "Finished this batch of loading at" << percentDone << "%, will continue in the next frame";
                        }
                        else
                        {
                                setAtmosphereShowMySkyStatusText(q_("Switching models..."));
                        }
                }
                catch(AtmosphereShowMySky::InitFailure const& error)
                {
                        qWarning() << "ERROR: Failed to load atmosphere model data:" << error.what();
                        qWarning() << "WARNING: Falling back to the Preetham's model";
                        setAtmosphereShowMySkyStoppedWithError(true);
                        setAtmosphereShowMySkyStatusText(error.what());
                        loadingAtmosphere.reset();
                }
        }

        if(loadingAtmosphere && loadingAtmosphere->isReadyToRender())
        {
                bool loaded = false;
                if(drawer->getFlagHasAtmosphere())
                {
                        // Fade out current atmosphere, then fade in the new one
                        if(atmosphere->getFlagShow())
                        {
                                atmosphere->setFlagShow(false);
                        }
                        else if(atmosphere->getFadeIntensity() == 0)
                        {
                                loadingAtmosphere->setFlagShow(true);
                                loadingAtmosphere->setFadeDuration(atmosphere->getFadeDuration());
                                loadingAtmosphere->setLightPollutionLuminance(atmosphere->getLightPollutionLuminance());
                                loaded = true;
                        }
                }
                else
                {
                        loaded = true;
                }

                if(loaded)
                {
                        atmosphere = std::move(loadingAtmosphere);
#ifdef ENABLE_SHOWMYSKY
                        if(dynamic_cast<AtmosphereShowMySky*>(atmosphere.get()))
                                setAtmosphereShowMySkyStatusText(q_("Loaded successfully"));
#endif
                        emit atmosphereModelChanged(getAtmosphereModel());
                }
        }

        atmosphere->update(deltaTime);

        if (oldLandscape)
        {
                // This is only when transitioning to newly loaded landscape. We must draw the old one until the new one is faded in completely.
                oldLandscape->update(deltaTime);
                if (getIsLandscapeFullyVisible())
                {
                        oldLandscape->setFlagShow(false);

                        if (oldLandscape->getEffectiveLandFadeValue()< 0.01f)
                        {
                                // new logic: try to put old landscape to cache.
                                //qDebug() << "LandscapeMgr::update: moving oldLandscape " << oldLandscape->getId() << "to Cache. Cost:" << oldLandscape->getMemorySize()/(1024*1024)+1;
                                landscapeCache.insert(oldLandscape->getId(), oldLandscape, oldLandscape->getMemorySize()/(1024*1024)+1);
                                //qDebug() << "--> LandscapeMgr::update(): cache now contains " << landscapeCache.size() << "landscapes totalling about " << landscapeCache.totalCost() << "MB.";
                                oldLandscape=Q_NULLPTR;
                        }
                }
        }
        landscape->update(deltaTime);
        cardinalPoints->update(deltaTime);

        // Compute the atmosphere color and intensity
        // Compute the sun position in local coordinate
        SolarSystem* ssystem = static_cast<SolarSystem*>(StelApp::getInstance().getModuleMgr().getModule("SolarSystem"));

        // Compute the moon position in local coordinate
        const auto sun   = ssystem->getSun();
        const auto moon  = ssystem->getMoon();
        const auto earth = ssystem->getEarth();
        const auto currentPlanet = core->getCurrentPlanet();
        const bool currentIsEarth = currentPlanet->getID() == earth->getID();
        // First parameter in next call is used for particularly earth-bound computations in Schaefer's sky brightness model. Difference DeltaT makes no difference here.
        // Temperature = 15°C, relative humidity = 40%
        try
        {
                atmosphere->computeColor(core, core->getJDE(), *currentPlanet, *sun,
                                                                 currentIsEarth ? moon.data() : nullptr, core->getCurrentLocation(),
                                                                 15.f, 40.f, static_cast<float>(drawer->getExtinctionCoefficient()), atmosphereNoScatter);
        }
        catch(AtmosphereShowMySky::InitFailure const& error)
        {
                qWarning().noquote() << "ShowMySky atmosphere model crashed:" << error.what();
                qWarning() << "Loading Preetham model";
                showMessage(q_("ShowMySky atmosphere model crashed. Loading Preetham model as a fallback."));
                resetToFallbackAtmosphere();
        }

        core->getSkyDrawer()->reportLuminanceInFov(3.75f+atmosphere->getAverageLuminance()*3.5f, true);

        // NOTE: Simple workaround for brightness of landscape when observing from the Sun.
        if (currentPlanet->getID() == sun->getID())
        {
                landscape->setBrightness(1.0, 1.0);
                return;
        }

        // Compute the ground luminance based on every planets around
        // TBD: Reactivate and verify this code!? Source, reference?
//        float groundLuminance = 0;
//        const vector<Planet*>& allPlanets = ssystem->getAllPlanets();
//        for (auto i=allPlanets.begin();i!=allPlanets.end();++i)
//        {
//                Vec3d pos = (*i)->getAltAzPos(core);
//                pos.normalize();
//                if (pos[2] <= 0)
//                {
//                        // No need to take this body into the landscape illumination computation
//                        // because it is under the horizon
//                }
//                else
//                {
//                        // Compute the Illuminance E of the ground caused by the planet in lux = lumen/m^2
//                        float E = pow10(((*i)->get_mag(core)+13.988)/-2.5);
//                        //qDebug() << "mag=" << (*i)->get_mag(core) << " illum=" << E;
//                        // Luminance in cd/m^2
//                        groundLuminance += E/0.44*pos[2]*pos[2]; // 1m^2 from 1.5 m above the ground is 0.44 sr.
//                }
//        }
//        groundLuminance*=atmosphere->getFadeIntensity();
//        groundLuminance=atmosphere->getAverageLuminance()/50;
//        qDebug() << "Atmosphere lum=" << atmosphere->getAverageLuminance() << " ground lum=" <<  groundLuminance;
//        qDebug() << "Adapted Atmosphere lum=" << eye->adaptLuminance(atmosphere->getAverageLuminance()) << " Adapted ground lum=" << eye->adaptLuminance(groundLuminance);

        // compute global ground brightness in a simplistic way, directly in RGB

        double landscapeBrightness=0.0;
        if (getFlagLandscapeUseMinimalBrightness())
        {
                // Setting from landscape.ini has priority if enabled
                if (getFlagLandscapeSetsMinimalBrightness() && landscape->getLandscapeMinimalBrightness()>=0)
                        landscapeBrightness = landscape->getLandscapeMinimalBrightness();
                else
                        landscapeBrightness = getDefaultMinimalBrightness();
        }

        Vec3d sunPos = sun->getAltAzPosAuto(core);
        sunPos.normalize();
        Vec3d moonPos = moon->getAltAzPosAuto(core);
        moonPos.normalize();

        // With atmosphere on, we define the solar brightness contribution zero when the sun is 8 degrees below the horizon.
        // The multiplier of 1.5 just looks better, it somehow represents illumination by scattered sunlight.
        // Else, we should account for sun's diameter but else just apply Lambertian Cos-rule and check with landscape opacity.
        double sinSunAngle = 0.0;
        if(atmosphere->getFlagShow())
        {
                sinSunAngle=sin(qMin(M_PI_2, asin(sunPos[2])+8.*M_PI/180.));
                if(sinSunAngle > -0.1/1.5 )
                        landscapeBrightness +=  1.5*(sinSunAngle+0.1/1.5);
        }
        else
        {
                // In case we have exceptionally deep horizons ("Little Prince planet"), the sun will rise somehow over that line and demand light on the landscape.
                sinSunAngle=sin(qMin(M_PI_2, asin(qBound(-1.0, sunPos[2]-landscape->getSinMinAltitudeLimit(), 1.0) ) + (0.25 *M_PI_180)));
                if(sinSunAngle > 0.0)
                        landscapeBrightness +=  (1.0-static_cast<double>(landscape->getOpacity(sunPos)))*sinSunAngle;
        }

        // GZ: 2013-09-25 Take light pollution into account!
        const float nelm = StelCore::luminanceToNELM(drawer->getLightPollutionLuminance());
        float pollutionAddonBrightness=(15.5f-2*nelm)*0.025f; // 0..8, so we assume empirical linear brightening 0..0.02
        float lunarAddonBrightness=0.f;
        if (currentIsEarth && moonPos[2] > -0.1/1.5)
                lunarAddonBrightness = qMax(0.2f/-12.f*moon->getVMagnitudeWithExtinction(core),0.f)*static_cast<float>(moonPos[2]);

        landscapeBrightness += static_cast<double>(qMax(lunarAddonBrightness, pollutionAddonBrightness));

        // TODO make this more generic for non-atmosphere planets
        if(atmosphere->getFadeIntensity() > 0.99999f )
        {
                // If the atmosphere is on, a solar eclipse might darken the sky
                // otherwise we just use the sun position calculation above
                landscapeBrightness *= static_cast<double>(atmosphere->getRealDisplayIntensityFactor()+0.1f);
        }
        // TODO: should calculate dimming with solar eclipse even without atmosphere on

        // Brightness can't be over 1.f (see https://bugs.launchpad.net/stellarium/+bug/1115364)
        if (landscapeBrightness>0.95)
                landscapeBrightness = 0.95;

        // GZ's rules and intentions for lightscape brightness:
        // lightscapeBrightness >0 makes sense only for sun below horizon.
        // If atmosphere on, we mix it in with darkening twilight. If atmosphere off, we can switch on more apruptly.
        // Note however that lightscape rendering does not per se depend on atmosphere on/off.
        // This allows for illuminated windows or light panels on spaceships. If a landscape's lightscape
        // contains light smog of a city, it should also be shown if atmosphere is switched off.
        // (Configure another landscape without light smog to avoid, or just switch off lightscape.)
        double lightscapeBrightness=0.0;
        const double sinSunAlt = sunPos[2];
        if (atmosphere->getFlagShow())
        {
                // light pollution layer is mixed in at -3...-8 degrees.
                if (sinSunAlt<-0.14)
                        lightscapeBrightness=1.0;
                else if (sinSunAlt<-0.05)
                        lightscapeBrightness = 1.0-(sinSunAlt+0.14)/(-0.05+0.14);
        }
        else
        {
                // If we have no atmosphere, we can assume windows and panels on spaceships etc. are switched on whenever the sun does not shine, i.e. when sun is blocked by landscape.
                lightscapeBrightness= static_cast<double>(landscape->getOpacity(sunPos));
        }

        landscape->setBrightness(landscapeBrightness, lightscapeBrightness);

        messageFader.update(static_cast<int>(deltaTime*1000));
}

void LandscapeMgr::draw(StelCore* core)
{
        StelSkyDrawer* drawer=core->getSkyDrawer();

        // Draw the atmosphere
        if (!getFlagAtmosphereNoScatter())
            atmosphere->draw(core);

        // GZ 2016-01: When we draw the atmosphere with a low sun, it is possible that the glaring red ball is overpainted and thus invisible.
        // Attempt to draw the sun only here while not having drawn it by SolarSystem:
        //if (atmosphere->getFlagShow())
        if (drawer->getFlagDrawSunAfterAtmosphere())
        {
                SolarSystem* ssys = GETSTELMODULE(SolarSystem);
                PlanetP sun=ssys->getSun();
                QFont font;
                font.setPixelSize(StelApp::getInstance().getScreenFontSize());
                sun->draw(core, 0, font);
        }

        // Draw the landscape
        if (oldLandscape)
                oldLandscape->draw(core, flagPolyLineDisplayedOnly);
        landscape->draw(core, flagPolyLineDisplayedOnly);

        // Draw the cardinal points
        cardinalPoints->draw(core, static_cast<double>(StelApp::getInstance().getCore()->getCurrentLocation().latitude));

        if(messageFader.getInterstate())
        {
                const StelProjectorP prj = core->getProjection(StelCore::FrameEquinoxEqu);
                StelPainter painter(prj);
                QFont font;
                font.setPixelSize(16);
                painter.setFont(font);
                painter.setColor(1, 0, 0, messageFader.getInterstate());
                painter.drawText(83, 70, messageToShow);
        }

        // Workaround for a bug with spherical mirror mode when we don't show the cardinal points.
        // I am not really sure why this seems to fix the problem.  If you want to
        // remove this, make sure the spherical mirror mode with cardinal points
        // toggled off works properly!
        const StelProjectorP prj = core->getProjection(StelCore::FrameAltAz, StelCore::RefractionOff);
        QOpenGLPaintDevice device;
        device.setSize(QSize(prj->getViewportWidth(), prj->getViewportHeight()));
        QPainter painter(&device);
}

// Some element in drawing order behind LandscapeMgr can call this at the end of its own draw() to overdraw with the polygon line and gazetteer.
void LandscapeMgr::drawPolylineOnly(StelCore* core)
{
        // Draw the landscape
        if (oldLandscape && oldLandscape->hasLandscapePolygon())
                oldLandscape->draw(core, true);
        if (landscape->hasLandscapePolygon())
                landscape->draw(core, true);

        // Draw the cardinal points
        cardinalPoints->draw(core, static_cast<double>(StelApp::getInstance().getCore()->getCurrentLocation().latitude));
}

void LandscapeMgr::createAtmosphere()
{
        const auto modelName=getAtmosphereModel();
        const auto modelConfig=modelName.toLower();
        bool needResetConfig=false;
        if(modelConfig==ATMOSPHERE_MODEL_CONF_VAL_PREETHAM)
        {
                loadingAtmosphere.reset(new AtmospherePreetham(skylight));
        }
#ifdef ENABLE_SHOWMYSKY
        else if(modelConfig==ATMOSPHERE_MODEL_CONF_VAL_SHOWMYSKY)
        {
                try
                {
                        // Clear status so that if a repeated error happens, we do emit a signal that will update the GUI.
                        setAtmosphereShowMySkyStatusText("");
                        setAtmosphereShowMySkyStoppedWithError(false);

                        loadingAtmosphere.reset(new AtmosphereShowMySky());
                        if(!atmosphere)
                        {
                                // We're just loading the first atmosphere in the run of Stellarium. Initialize it synchronously.
                                while(loadingAtmosphere->isLoading())
                                        loadingAtmosphere->stepDataLoading();

                                setAtmosphereShowMySkyStoppedWithError(false);
                                setAtmosphereShowMySkyStatusText(q_("Loaded successfully"));
                        }
                        else
                        {
                                setAtmosphereShowMySkyStoppedWithError(false);
                                setAtmosphereShowMySkyStatusText(QString("%1 0% %2").arg(q_("Loading..."), qc_("done","percentage of done")));
                        }
                }
                catch(AtmosphereShowMySky::InitFailure const& error)
                {
                        qWarning() << "ERROR: Failed to initialize ShowMySky atmosphere model:" << error.what();
                        qWarning() << "WARNING: Falling back to the Preetham's model";
                        loadingAtmosphere.reset(new AtmospherePreetham(skylight));
                        needResetConfig=true;

                        setAtmosphereShowMySkyStoppedWithError(true);
                        setAtmosphereShowMySkyStatusText(error.what());
                }
        }
#endif
        else
        {
                qWarning() << "Unsupported atmosphere model" << modelName;
                loadingAtmosphere.reset(new AtmospherePreetham(skylight));
                needResetConfig=true;
        }
        if(!atmosphere)
        {
                // We're just loading the first atmosphere in the run of Stellarium. The atmosphere is fully loaded by this point.
                atmosphere = std::move(loadingAtmosphere);

                const auto conf=StelApp::getInstance().getSettings();
                setFlagAtmosphere(conf->value("landscape/flag_atmosphere", true).toBool());
                setAtmosphereFadeDuration(conf->value("landscape/atmosphere_fade_duration",0.5).toFloat());

                const auto drawer = StelApp::getInstance().getCore()->getSkyDrawer();
                setAtmosphereLightPollutionLuminance(drawer->getLightPollutionLuminance());
        }

        if(needResetConfig)
        {
                // We've failed to apply the setting, so reset to the fallback value
                const auto conf=StelApp::getInstance().getSettings();
                conf->setValue(ATMOSPHERE_MODEL_CONFIG_KEY, ATMOSPHERE_MODEL_CONF_VAL_PREETHAM);
        }

        needToRecreateAtmosphere=false;
}

void LandscapeMgr::resetToFallbackAtmosphere()
{
        StelApp::getInstance().getSettings()->setValue(ATMOSPHERE_MODEL_CONFIG_KEY, ATMOSPHERE_MODEL_CONF_VAL_PREETHAM);
        atmosphere.reset();
        createAtmosphere();
}

void LandscapeMgr::init()
{
        QSettings* conf = StelApp::getInstance().getSettings();
        Q_ASSERT(conf);
        StelApp *app = &StelApp::getInstance();
        Q_ASSERT(app);

        landscapeCache.setMaxCost(conf->value("landscape/cache_size_mb", 100).toInt());
        qDebug() << "LandscapeMgr: initialized Cache for" << landscapeCache.maxCost() << "MB.";

        // SET SIMPLE PROPERTIES FIRST, before loading the landscape (Loading may already make use of them! GH#1237)
        setFlagLandscapeSetsLocation(conf->value("landscape/flag_landscape_sets_location",false).toBool());
        setFlagLandscapeAutoSelection(conf->value("viewing/flag_landscape_autoselection", false).toBool());
        setFlagEnvironmentAutoEnable(conf->value("viewing/flag_environment_auto_enable",true).toBool());
        // Set minimal brightness for landscape. This feature has been added for folks which say "landscape is super dark, please add light". --AW
        setDefaultMinimalBrightness(conf->value("landscape/minimal_brightness", 0.01).toDouble());
        setFlagLandscapeUseMinimalBrightness(conf->value("landscape/flag_minimal_brightness", false).toBool());
        setFlagLandscapeSetsMinimalBrightness(conf->value("landscape/flag_landscape_sets_minimal_brightness",false).toBool());

        const auto var = conf->value(ATMOSPHERE_MODEL_PATH_CONFIG_KEY);
        if(!var.isValid())
                conf->setValue(ATMOSPHERE_MODEL_PATH_CONFIG_KEY, getDefaultAtmosphereModelPath());

        createAtmosphere();
        // Put the atmosphere's Skylight under the StelProperty system (simpler and more consistent GUI)
        StelApp::getInstance().getStelPropertyManager()->registerObject(&skylight);

        defaultLandscapeID = conf->value("init_location/landscape_name").toString();

        // We must make sure to allow auto location or command-line location even if landscape usually should set location.
        StelCore *core = StelApp::getInstance().getCore();
        const bool setLocationFromIPorCLI=((conf->value("init_location/location", "auto").toString() == "auto") || (core->getCurrentLocation().state=="CLI"));
        const bool shouldThenSetLocation=getFlagLandscapeSetsLocation();
        if (setLocationFromIPorCLI) setFlagLandscapeSetsLocation(false);
        setCurrentLandscapeID(defaultLandscapeID);
        setFlagLandscapeSetsLocation(shouldThenSetLocation);
        setFlagUseLightPollutionFromDatabase(conf->value("viewing/flag_light_pollution_database", false).toBool());
        setFlagLandscape(conf->value("landscape/flag_landscape", conf->value("landscape/flag_ground", true).toBool()).toBool());
        setFlagFog(conf->value("landscape/flag_fog",true).toBool());
        setFlagIllumination(conf->value("landscape/flag_enable_illumination_layer", true).toBool());
        setFlagLabels(conf->value("landscape/flag_enable_labels", true).toBool());
        setFlagPolyLineDisplayed(conf->value("landscape/flag_polyline_only", false).toBool());
        setPolyLineThickness(conf->value("landscape/polyline_thickness", 1).toInt());
        setLabelFontSize(conf->value("landscape/label_font_size", 18).toInt());
        setLabelColor(Vec3f(conf->value("landscape/label_color", "0.2,0.8,0.2").toString()));

        cardinalPoints = new Cardinals();
        cardinalPoints->setFlagShow4WCRLabels(conf->value("viewing/flag_cardinal_points", true).toBool());
        cardinalPoints->setFlagShow8WCRLabels(conf->value("viewing/flag_ordinal_points", true).toBool());
        cardinalPoints->setFlagShow16WCRLabels(conf->value("viewing/flag_16wcr_points", false).toBool());
        // Load colors from config file
        QString defaultColor = conf->value("color/default_color").toString();
        setColorCardinalPoints(Vec3f(conf->value("color/cardinal_color", defaultColor).toString()));

        currentPlanetName = app->getCore()->getCurrentLocation().planetName;
        //Bortle scale is managed by SkyDrawer
        StelSkyDrawer* drawer = app->getCore()->getSkyDrawer();
        Q_ASSERT(drawer);
        setAtmosphereLightPollutionLuminance(drawer->getLightPollutionLuminance());
        connect(app->getCore(), SIGNAL(locationChanged(StelLocation)), this, SLOT(onLocationChanged(StelLocation)));
        connect(app->getCore(), SIGNAL(targetLocationChanged(StelLocation)), this, SLOT(onTargetLocationChanged(StelLocation)));
        connect(drawer, &StelSkyDrawer::lightPollutionLuminanceChanged, this, &LandscapeMgr::setAtmosphereLightPollutionLuminance);
        connect(app, SIGNAL(languageChanged()), this, SLOT(updateI18n()));

        QString displayGroup = N_("Display Options");
        addAction("actionShow_Atmosphere", displayGroup, N_("Atmosphere"), "atmosphereDisplayed", "A");
        addAction("actionShow_Fog", displayGroup, N_("Fog"), "fogDisplayed", "F");
        addAction("actionShow_Cardinal_Points", displayGroup, N_("Cardinal points"), "cardinalPointsDisplayed", "Q");
        addAction("actionShow_Intercardinal_Points", displayGroup, N_("Ordinal (Intercardinal) points"), "ordinalPointsDisplayed");
        addAction("actionShow_Secondary_Intercardinal_Points", displayGroup, N_("Secondary Intercardinal points"), "ordinal16WRPointsDisplayed");
        addAction("actionShow_Ground", displayGroup, N_("Ground"), "landscapeDisplayed", "G");
        addAction("actionShow_LandscapeIllumination", displayGroup, N_("Landscape illumination"), "illuminationDisplayed", "Shift+G");
        addAction("actionShow_LandscapeLabels", displayGroup, N_("Landscape labels"), "labelsDisplayed", "Ctrl+Shift+G");
        addAction("actionShow_LightPollutionFromDatabase", displayGroup, N_("Light pollution data from locations database"), "flagUseLightPollutionFromDatabase");
        // Details: https://github.com/Stellarium/stellarium/issues/171
        addAction("actionShow_LightPollutionIncrease", displayGroup, N_("Increase light pollution"), "increaseLightPollution()");
        addAction("actionShow_LightPollutionReduce", displayGroup, N_("Reduce light pollution"), "reduceLightPollution()");
        addAction("actionShow_LightPollutionCyclicChange", displayGroup, N_("Cyclic change in light pollution"), "cyclicChangeLightPollution()");
}

bool LandscapeMgr::setCurrentLandscapeID(const QString& id, const double changeLocationDuration)
{
        if (id.isEmpty())
                return false;

        //prevent unnecessary changes/file access
        if(id==currentLandscapeID)
                return false;

        Landscape* newLandscape;

        // There is a slight chance that we switch back to oldLandscape while oldLandscape is still fading away.
        // in this case it is not yet stored in cache, but obviously available. So we just swap places.
        if (oldLandscape && oldLandscape->getId()==id)
        {
                newLandscape=oldLandscape;
        }
        else
        {
                // We want to lookup the landscape ID (dir) from the name.
                newLandscape= landscapeCache.take(id);

                if (newLandscape)
                {
#ifndef NDEBUG
                        qDebug() << "LandscapeMgr::setCurrentLandscapeID():: taken " << id << "from cache...";
                        qDebug() << ".-->LandscapeMgr::setCurrentLandscapeID(): cache contains " << landscapeCache.size() << "landscapes totalling about " << landscapeCache.totalCost() << "MB.";
#endif
                }
                else
                {
#ifndef NDEBUG
                        qDebug() << "LandscapeMgr::setCurrentLandscapeID: Loading from file:" << id ;
#endif
                        newLandscape = createFromFile(StelFileMgr::findFile("landscapes/" + id + "/landscape.ini"), id);
                }

                if (!newLandscape)
                {
                        qWarning() << "ERROR while loading landscape " << "landscapes/" + id + "/landscape.ini";
                        return false;
                }
        }

        // Keep current landscape for a while, while new landscape fades in!
        // This prevents subhorizon sun or grid becoming briefly visible.
        if (landscape)
        {
                // Copy display parameters from previous landscape to new one
                newLandscape->setFlagShow(landscape->getFlagShow());
                newLandscape->setFlagShowFog(landscape->getFlagShowFog());
                newLandscape->setFlagShowIllumination(landscape->getFlagShowIllumination());
                newLandscape->setFlagShowLabels(landscape->getFlagShowLabels());
                newLandscape->setLabelFontSize(landscape->getLabelFontSize());
                newLandscape->setLabelColor(landscape->getLabelColor());

                // If we have an oldLandscape that is not just swapped back, put that into cache.
                if (oldLandscape && oldLandscape!=newLandscape)
                {
#ifndef NDEBUG
                        qDebug() << "LandscapeMgr::setCurrent: moving oldLandscape " << oldLandscape->getId() << "to Cache. Cost:" << oldLandscape->getMemorySize()/(1024*1024)+1;
#endif
                        landscapeCache.insert(oldLandscape->getId(), oldLandscape, oldLandscape->getMemorySize()/(1024*1024)+1);
#ifndef NDEBUG
                        qDebug() << "-->LandscapeMgr::setCurrentLandscapeId(): cache contains " << landscapeCache.size() << "landscapes totalling about " << landscapeCache.totalCost() << "MB.";
#endif
                }
                oldLandscape = landscape; // keep old while transitioning!
        }
        landscape=newLandscape;
        currentLandscapeID = id;

        if (getFlagLandscapeSetsLocation() && landscape->hasLocation())
        {
                StelCore *core = StelApp::getInstance().getCore();
                core->moveObserverTo(landscape->getLocation(), changeLocationDuration);
                StelSkyDrawer* drawer=core->getSkyDrawer();

                if (landscape->getLocation().ianaTimeZone.length())
                {
                        core->setCurrentTimeZone(landscape->getLocation().ianaTimeZone);
                }
                if (landscape->getDefaultFogSetting() >-1)
                {
                        setFlagFog(static_cast<bool>(landscape->getDefaultFogSetting()));
                        landscape->setFlagShowFog(static_cast<bool>(landscape->getDefaultFogSetting()));
                }
                if (landscape->getDefaultLightPollutionLuminance().isValid())
                {
                        drawer->setLightPollutionLuminance(landscape->getDefaultLightPollutionLuminance().toFloat());
                }
                if (landscape->getDefaultAtmosphericExtinction() >= 0.0)
                {
                        drawer->setExtinctionCoefficient(landscape->getDefaultAtmosphericExtinction());
                }
                if (landscape->getDefaultAtmosphericTemperature() > -273.15)
                {
                        drawer->setAtmosphereTemperature(landscape->getDefaultAtmosphericTemperature());
                }
                if (landscape->getDefaultAtmosphericPressure() >= 0.0)
                {
                        drawer->setAtmospherePressure(landscape->getDefaultAtmosphericPressure());
                }
                else if (landscape->getDefaultAtmosphericPressure() < 0.0)
                {
                        // compute standard pressure for standard atmosphere in given altitude if landscape.ini coded as atmospheric_pressure=-1
                        // International altitude formula found in Wikipedia.
                        double alt=landscape->getLocation().altitude;
                        double p=1013.25*std::pow(1-(0.0065*alt)/288.15, 5.255);
                        drawer->setAtmospherePressure(p);
                }
        }

        emit currentLandscapeChanged(currentLandscapeID,getCurrentLandscapeName());

        // else qDebug() << "Will not set new location; Landscape location: planet: " << landscape->getLocation().planetName << "name: " << landscape->getLocation().name;
        return true;
}

bool LandscapeMgr::setCurrentLandscapeName(const QString& name, const double changeLocationDuration)
{
        if (name.isEmpty())
                return false;
        
        QMap<QString,QString> nameToDirMap = getNameToDirMap();
        if (nameToDirMap.find(name)!=nameToDirMap.end())
        {
                return setCurrentLandscapeID(nameToDirMap[name], changeLocationDuration);
        }
        else
        {
                qWarning() << "Can't find a landscape with name=" << name << StelUtils::getEndLineChar();
                return false;
        }
}

// Load a landscape into cache.
// @param id the ID of a landscape
// @param replace true if existing landscape entry should be replaced (useful during development to reload after edit)
// @return false if landscape could not be found, or existed already and replace was false.
bool LandscapeMgr::precacheLandscape(const QString& id, const bool replace)
{
        if (landscapeCache.contains(id) && (!replace))
                return false;

        Landscape* newLandscape = createFromFile(StelFileMgr::findFile("landscapes/" + id + "/landscape.ini"), id);
        if (!newLandscape)
        {
                qWarning() << "ERROR while preloading landscape " << "landscapes/" + id + "/landscape.ini";
                return false;
        }

        bool res=landscapeCache.insert(id, newLandscape, newLandscape->getMemorySize()/(1024*1024)+1);
#ifndef NDEBUG
        if (res)
        {
                qDebug() << "LandscapeMgr::precacheLandscape(): Successfully added landscape with ID " << id << "to cache";
        }
        qDebug() << "LandscapeMgr::precacheLandscape(): cache contains " << landscapeCache.size() << "landscapes totalling about " << landscapeCache.totalCost() << "MB.";
#endif
        return res;
}

// Remove a landscape from the cache of loaded landscapes.
// @param id the ID of a landscape
// @return false if landscape could not be found
bool LandscapeMgr::removeCachedLandscape(const QString& id)
{
        bool res= landscapeCache.remove(id);
#ifndef NDEBUG
        qDebug() << "LandscapeMgr::removeCachedLandscape(): cache contains " << landscapeCache.size() << "landscapes totalling about " << landscapeCache.totalCost() << "MB.";
#endif
        return res;
}


// Change the default landscape to the landscape with the ID specified.
bool LandscapeMgr::setDefaultLandscapeID(const QString& id)
{
        if (id.isEmpty())
                return false;
        defaultLandscapeID = id;
        QSettings* conf = StelApp::getInstance().getSettings();
        conf->setValue("init_location/landscape_name", id);
        emit defaultLandscapeChanged(id);
        return true;
}

void LandscapeMgr::updateI18n()
{
        // Translate all labels with the new language
        if (cardinalPoints) cardinalPoints->updateI18n();
        landscape->loadLabels(getCurrentLandscapeID());
}

void LandscapeMgr::setFlagLandscape(const bool displayed)
{
        if (oldLandscape && !displayed)
                oldLandscape->setFlagShow(false);
        if(landscape->getFlagShow() != displayed) {
                landscape->setFlagShow(displayed);
                emit landscapeDisplayedChanged(displayed);
        }
}

bool LandscapeMgr::getFlagLandscape() const
{
        return landscape->getFlagShow();
}

bool LandscapeMgr::getIsLandscapeFullyVisible() const
{
        return landscape->getIsFullyVisible();
}

double LandscapeMgr::getLandscapeSinMinAltitudeLimit() const
{
        return landscape->getSinMinAltitudeLimit();
}

bool LandscapeMgr::getFlagUseLightPollutionFromDatabase() const
{
        return flagLightPollutionFromDatabase;
}

void LandscapeMgr::setFlagUseLightPollutionFromDatabase(const bool usage)
{
        if (flagLightPollutionFromDatabase != usage)
        {
                flagLightPollutionFromDatabase = usage;

                StelCore* core = StelApp::getInstance().getCore();

                //this was previously logic in ViewDialog, but should really be on a non-GUI layer
                if (usage)
                {
                        StelLocation loc = core->getCurrentLocation();
                        onLocationChanged(loc);
                }

                emit flagUseLightPollutionFromDatabaseChanged(usage);
        }
}

void LandscapeMgr::onLocationChanged(const StelLocation &loc)
{
        if(flagLightPollutionFromDatabase)
        {
                //this was previously logic in ViewDialog, but should really be on a non-GUI layer
                StelCore* core = StelApp::getInstance().getCore();
                float lum;
                if (!loc.planetName.contains("Earth")) // location not on Earth...
                        lum = 0;
                else if(loc.lightPollutionLuminance.isValid())
                        lum = loc.lightPollutionLuminance.toFloat();
                else // ...or it is an observatory, or it is an unknown location
                        lum = loc.DEFAULT_LIGHT_POLLUTION_LUMINANCE;

                core->getSkyDrawer()->setLightPollutionLuminance(lum);
        }
}

void LandscapeMgr::onTargetLocationChanged(const StelLocation &loc)
{
        if (loc.planetName != currentPlanetName)
        {
                currentPlanetName = loc.planetName;
                if (flagLandscapeAutoSelection)
                {
                        // If we have a landscape for selected planet then set it, otherwise use zero horizon landscape
                        bool landscapeSetsLocation = getFlagLandscapeSetsLocation();
                        setFlagLandscapeSetsLocation(false);
                        if (getAllLandscapeNames().indexOf(loc.planetName)>0)
                                setCurrentLandscapeName(loc.planetName);
                        else
                                setCurrentLandscapeID("zero");
                        setFlagLandscapeSetsLocation(landscapeSetsLocation);
                }

                if (loc.planetName.contains("Observer", Qt::CaseInsensitive))
                {
                        if (flagEnvironmentAutoEnabling)
                        {
                                setFlagAtmosphere(false);
                                setFlagFog(false);
                                setFlagLandscape(false);
                                setFlagCardinalPoints(false);
                                //setFlagOrdinalsPoints(false);
                                //setFlagOrdinals16WRPoints(false);
                        }
                }
                else
                {
                        SolarSystem* ssystem = static_cast<SolarSystem*>(StelApp::getInstance().getModuleMgr().getModule("SolarSystem"));
                        PlanetP pl = ssystem->searchByEnglishName(loc.planetName);
                        if (pl && flagEnvironmentAutoEnabling)
                        {
                                QSettings* conf = StelApp::getInstance().getSettings();
                                setFlagAtmosphere(pl->hasAtmosphere() && conf->value("landscape/flag_atmosphere", true).toBool());
                                setFlagFog(pl->hasAtmosphere() && conf->value("landscape/flag_fog", true).toBool());
                                setFlagLandscape(true);
                                setFlagCardinalPoints(conf->value("viewing/flag_cardinal_points", true).toBool());
                                setFlagOrdinalPoints(conf->value("viewing/flag_ordinal_points", true).toBool());
                                setFlagOrdinal16WRPoints(conf->value("viewing/flag_16wcr_points", false).toBool());
                        }
                }
        }
}

void LandscapeMgr::setFlagFog(const bool displayed)
{
        if (landscape->getFlagShowFog() != displayed) {
                landscape->setFlagShowFog(displayed);
                emit fogDisplayedChanged(displayed);
        }
}

bool LandscapeMgr::getFlagFog() const
{
        return landscape->getFlagShowFog();
}

void LandscapeMgr::setFlagIllumination(const bool displayed)
{
        if (landscape->getFlagShowIllumination() != displayed) {
                landscape->setFlagShowIllumination(displayed);
                emit illuminationDisplayedChanged(displayed);
        }
}

bool LandscapeMgr::getFlagIllumination() const
{
        return landscape->getFlagShowIllumination();
}

void LandscapeMgr::setFlagLabels(const bool displayed)
{
        if (landscape->getFlagShowLabels() != displayed) {
                landscape->setFlagShowLabels(displayed);
                emit labelsDisplayedChanged(displayed);
        }
}

bool LandscapeMgr::getFlagLabels() const
{
        return landscape->getFlagShowLabels();
}

void LandscapeMgr::setLabelFontSize(const int size)
{
        landscape->setLabelFontSize(size);
        emit labelFontSizeChanged(size);
}

int LandscapeMgr::getLabelFontSize() const
{
        return landscape->getLabelFontSize();
}

void LandscapeMgr::setLabelColor(const Vec3f& c)
{
        landscape->setLabelColor(c);
        emit labelColorChanged(c);
}

Vec3f LandscapeMgr::getLabelColor() const
{
        return landscape->getLabelColor();
}

void LandscapeMgr::setFlagLandscapeAutoSelection(bool enableAutoSelect)
{
        if(enableAutoSelect != flagLandscapeAutoSelection)
        {
                flagLandscapeAutoSelection = enableAutoSelect;
                emit flagLandscapeAutoSelectionChanged(enableAutoSelect);
        }
}

bool LandscapeMgr::getFlagLandscapeAutoSelection() const
{
        return flagLandscapeAutoSelection;
}

void LandscapeMgr::setFlagEnvironmentAutoEnable(bool b)
{
        if(b != flagEnvironmentAutoEnabling)
        {
                flagEnvironmentAutoEnabling = b;
                emit setFlagEnvironmentAutoEnableChanged(b);
        }
}

bool LandscapeMgr::getFlagEnvironmentAutoEnable() const
{
        return flagEnvironmentAutoEnabling;
}

/*********************************************************************
 Retrieve list of the names of all the available landscapes
 *********************************************************************/
QStringList LandscapeMgr::getAllLandscapeNames() const
{
        return getNameToDirMap().keys();
}

QStringList LandscapeMgr::getAllLandscapeIDs() const
{
        return getNameToDirMap().values();
}

QStringList LandscapeMgr::getUserLandscapeIDs() const
{
        QStringList result;
        QMapIterator<QString, QString> it(getNameToDirMap());
        while (it.hasNext())
        {
                it.next();
                if(!packagedLandscapeIDs.contains(it.value()))
                        result.append(it.value());
        }
        return result;
}

QString LandscapeMgr::getCurrentLandscapeName() const
{
        return landscape->getName();
}

QString LandscapeMgr::getCurrentLandscapeHtmlDescription() const
{
        QString desc = getDescription();

        QString author = landscape->getAuthorName();

        desc += "<p>";
        if (!author.isEmpty())
                desc += QString("<b>%1</b>: %2<br />").arg(q_("Author"), author);

        // This previously showed 0/0 for locationless landscapes!
        if (landscape->hasLocation())
        {
                //TRANSLATORS: Unit of measure for distance - meter
                QString alt = qc_("m", "distance");

                desc += QString("<b>%1</b>: %2, %3, %4 %5").arg(
                                q_("Location"),
                                StelUtils::radToDmsStrAdapt(static_cast<double>(landscape->getLocation().latitude) *M_PI_180),
                                StelUtils::radToDmsStrAdapt(static_cast<double>(landscape->getLocation().longitude) * M_PI_180),
                                QString::number(landscape->getLocation().altitude),
                                alt);

                QString planetName = landscape->getLocation().planetName;                
                if (!planetName.isEmpty())
                {
                        const StelTranslator& trans = StelApp::getInstance().getLocaleMgr().getSkyTranslator();
                        desc += QString(", %1").arg(trans.qtranslate(planetName, "major planet")); // TODO: Enhance the context support
                }
                desc += "<br />";

                QStringList atmosphere;
                //atmosphere.clear(); // Huh?

                double pressure = landscape->getDefaultAtmosphericPressure();
                if (pressure>0.)
                {
                        // 1 mbar = 1 hPa
                        //TRANSLATORS: Unit of measure for pressure - hectopascals
                        QString hPa = qc_("hPa", "pressure");
                        atmosphere.append(QString("%1 %2").arg(QString::number(pressure, 'f', 1), hPa));
                }

                double temperature = landscape->getDefaultAtmosphericTemperature();
                if (temperature>-1000.0)
                        atmosphere.append(QString("%1 %2C").arg(QString::number(temperature, 'f', 1)).arg(QChar(0x00B0)));

                double extcoeff = landscape->getDefaultAtmosphericExtinction();
                if (extcoeff>-1.0)
                        atmosphere.append(QString("%1: %2").arg(q_("extinction coefficient"), QString::number(extcoeff, 'f', 2)));

                if (atmosphere.size()>0)
                        desc += QString("<b>%1</b>: %2<br />").arg(q_("Atmospheric conditions"), atmosphere.join(", "));

                const auto lightPollutionLum = landscape->getDefaultLightPollutionLuminance();
                if (lightPollutionLum.isValid())
                {
                        const auto lum = lightPollutionLum.toFloat();
                        auto scaledLum = lum;
                        QString unit = q_("cd/m<sup>2</sup>");
                        if(lum < 1e-6f)
                        {
                                scaledLum = lum*1e9f;
                                unit = q_("ncd/m<sup>2</sup>");
                        }
                        else if(lum < 1e-3f)
                        {
                                scaledLum = lum*1e6f;
                                unit = q_("&mu;cd/m<sup>2</sup>");
                        }
                        else if(lum < 1)
                        {
                                scaledLum = lum*1e3f;
                                unit = q_("mcd/m<sup>2</sup>");
                        }
                        desc += q_("<b>Light pollution</b>: %1 %2 (NELM: %3; Bortle class: %4)")
                                                .arg(scaledLum).arg(unit).arg(StelCore::luminanceToNELM(lum))
                                                .arg(StelCore::luminanceToBortleScaleIndex(lum));
                }
        }        
        return desc;
}

//! Set flag for displaying cardinal points
void LandscapeMgr::setFlagCardinalPoints(const bool displayed)
{
        if (cardinalPoints->getFlagShow4WCRLabels() != displayed)
        {
                cardinalPoints->setFlagShow4WCRLabels(displayed);
                emit cardinalPointsDisplayedChanged(displayed);
        }
}

//! Get flag for displaying cardinal points
bool LandscapeMgr::getFlagCardinalPoints() const
{
        return cardinalPoints->getFlagShowCardinals();
}

//! Set flag for displaying ordinal points
void LandscapeMgr::setFlagOrdinalPoints(const bool displayed)
{
        if (cardinalPoints->getFlagShow8WCRLabels() != displayed)
        {
                cardinalPoints->setFlagShow8WCRLabels(displayed);
                emit ordinalPointsDisplayedChanged(displayed);
        }
}

//! Get flag for displaying ordinal points
bool LandscapeMgr::getFlagOrdinalPoints() const
{
        return cardinalPoints->getFlagShow8WCRLabels();
}

//! Set flag for displaying ordinal points
void LandscapeMgr::setFlagOrdinal16WRPoints(const bool displayed)
{
        if (cardinalPoints->getFlagShow16WCRLabels() != displayed)
        {
                cardinalPoints->setFlagShow16WCRLabels(displayed);
                emit ordinal16WRPointsDisplayedChanged(displayed);
        }
}

//! Get flag for displaying ordinal points
bool LandscapeMgr::getFlagOrdinal16WRPoints() const
{
        return cardinalPoints->getFlagShow16WCRLabels();
}

//! Set Cardinals Points color
void LandscapeMgr::setColorCardinalPoints(const Vec3f& v)
{
        if(v != getColorCardinalPoints())
        {
                cardinalPoints->setColor(v);
                emit cardinalPointsColorChanged(v);
        }
}

//! Get Cardinals Points color
Vec3f LandscapeMgr::getColorCardinalPoints() const
{
        return cardinalPoints->getColor();
}

///////////////////////////////////////////////////////////////////////////////////////
// Atmosphere
//! Set flag for displaying Atmosphere
void LandscapeMgr::setFlagAtmosphere(const bool displayed)
{
        if (atmosphere->getFlagShow() != displayed) {
                atmosphere->setFlagShow(displayed);
                StelApp::getInstance().getCore()->getSkyDrawer()->setFlagHasAtmosphere(displayed);
                emit atmosphereDisplayedChanged(displayed);
                //if (StelApp::getInstance().getSettings()->value("landscape/flag_fog", true).toBool())
                //        setFlagFog(displayed); // sync of visibility of fog because this is atmospheric phenomena
                // GZ This did not work as it may have been intended. Switch off fog, switch off atmosphere. Switch on atmosphere, and you have fog?
                // --> Fog is only drawn in Landscape if atmosphere is switched on!
        }
}

void LandscapeMgr::setAtmosphereModel(const QString& model)
{
        const auto modelToSet = model.toLower();
        const auto oldModel = getAtmosphereModel().toLower();
        if(modelToSet == oldModel)
                return;

        StelApp::getInstance().getSettings()->setValue(ATMOSPHERE_MODEL_CONFIG_KEY, model);

        if(!(oldModel.isEmpty() && modelToSet == ATMOSPHERE_MODEL_CONF_VAL_DEFAULT))
        {
                // Can't call createAtmosphere() right now, because we likely have wrong OpenGL context (or even none).
                // So just schedule it for the next draw.
                needToRecreateAtmosphere=true;
        }
}

void LandscapeMgr::setAtmosphereModelPath(const QString& path)
{
        if(getAtmosphereModelPath()==path)
                return;

        StelApp::getInstance().getSettings()->setValue(ATMOSPHERE_MODEL_PATH_CONFIG_KEY, path);
        setAtmosphereModel(ATMOSPHERE_MODEL_CONF_VAL_SHOWMYSKY); // This is the only relevant model for this property
        needToRecreateAtmosphere=true;

        emit atmosphereModelPathChanged(path);
}

void LandscapeMgr::setAtmosphereShowMySkyStoppedWithError(const bool error)
{
        if(atmosphereShowMySkyStoppedWithError == error)
                return;
        atmosphereShowMySkyStoppedWithError = error;
        emit atmosphereStoppedWithErrorChanged(error);
}

void LandscapeMgr::setAtmosphereShowMySkyStatusText(const QString& text)
{
        if(atmosphereShowMySkyStatusText == text)
                return;
        atmosphereShowMySkyStatusText = text;
        emit atmosphereStatusTextChanged(text);
}

void LandscapeMgr::setFlagAtmosphereZeroOrderScattering(const bool enable)
{
        atmosphereZeroOrderScatteringEnabled=enable;
        emit flagAtmosphereZeroOrderScatteringChanged(enable);
}

void LandscapeMgr::setFlagAtmosphereSingleScattering(const bool enable)
{
        atmosphereSingleScatteringEnabled=enable;
        emit flagAtmosphereSingleScatteringChanged(enable);
}

void LandscapeMgr::setFlagAtmosphereMultipleScattering(const bool enable)
{
        atmosphereMultipleScatteringEnabled=enable;
        emit flagAtmosphereMultipleScatteringChanged(enable);
}

void LandscapeMgr::setAtmosphereEclipseSimulationQuality(const int quality)
{
        if(getAtmosphereEclipseSimulationQuality() == quality)
                return;

        StelApp::getInstance().getSettings()->setValue(ATMOSPHERE_ECLIPSE_SIM_QUALITY_CONFIG_KEY, quality);

        emit atmosphereEclipseSimulationQualityChanged(quality);
}

//! Get flag for displaying Atmosphere
bool LandscapeMgr::getFlagAtmosphere() const
{
        return atmosphere->getFlagShow();
}

//! Set flag for displaying Atmosphere
void LandscapeMgr::setFlagAtmosphereNoScatter(const bool noScatter)
{
        atmosphereNoScatter=noScatter;
        emit atmosphereNoScatterChanged(noScatter);
}

//! Get flag for displaying Atmosphere
bool LandscapeMgr::getFlagAtmosphereNoScatter() const
{
        return atmosphereNoScatter;
}

QString LandscapeMgr::getAtmosphereModel() const
{
        const auto conf=StelApp::getInstance().getSettings();
        return conf->value(ATMOSPHERE_MODEL_CONFIG_KEY, ATMOSPHERE_MODEL_CONF_VAL_DEFAULT).toString();
}

QString LandscapeMgr::getAtmosphereModelPath() const
{
        const auto conf=StelApp::getInstance().getSettings();

        const auto var = conf->value(ATMOSPHERE_MODEL_PATH_CONFIG_KEY);
        if(var.isValid()) return var.toString();

        return getDefaultAtmosphereModelPath();
}

QString LandscapeMgr::getDefaultAtmosphereModelPath() const
{
        return QDir::toNativeSeparators(QString("%1/atmosphere/default").arg(StelFileMgr::getInstallationDir()));
}

bool LandscapeMgr::getAtmosphereShowMySkyStoppedWithError() const
{
        return atmosphereShowMySkyStoppedWithError;
}

QString LandscapeMgr::getAtmosphereShowMySkyStatusText() const
{
        return atmosphereShowMySkyStatusText;
}

bool LandscapeMgr::getFlagAtmosphereZeroOrderScattering() const
{
        return atmosphereZeroOrderScatteringEnabled;
}

bool LandscapeMgr::getFlagAtmosphereSingleScattering() const
{
        return atmosphereSingleScatteringEnabled;
}

bool LandscapeMgr::getFlagAtmosphereMultipleScattering() const
{
        return atmosphereMultipleScatteringEnabled;
}

int LandscapeMgr::getAtmosphereEclipseSimulationQuality() const
{
        const auto conf=StelApp::getInstance().getSettings();
        return conf->value(ATMOSPHERE_ECLIPSE_SIM_QUALITY_CONFIG_KEY, 1).toInt();
}

float LandscapeMgr::getAtmosphereFadeIntensity() const
{
        return atmosphere->getFadeIntensity();
}

//! Set atmosphere fade duration in s
void LandscapeMgr::setAtmosphereFadeDuration(const float f)
{
        atmosphere->setFadeDuration(f);
}

//! Get atmosphere fade duration in s
float LandscapeMgr::getAtmosphereFadeDuration() const
{
        return atmosphere->getFadeDuration();
}

//! Set light pollution luminance level
void LandscapeMgr::setAtmosphereLightPollutionLuminance(const float f)
{
        atmosphere->setLightPollutionLuminance(f);
}

//! Get light pollution luminance level
float LandscapeMgr::getAtmosphereLightPollutionLuminance() const
{
        return atmosphere->getLightPollutionLuminance();
}

void LandscapeMgr::setZRotation(const float d)
{
        if (landscape)
                landscape->setZRotation(d);
}

float LandscapeMgr::getLuminance() const
{
        return atmosphere->getRealDisplayIntensityFactor();
}

float LandscapeMgr::getAtmosphereAverageLuminance() const
{
        return atmosphere->getAverageLuminance();
}

// Override auto-computed luminance. Only use when you know what you are doing, and don't forget to unfreeze the average by calling this function with a negative value.
void LandscapeMgr::setAtmosphereAverageLuminance(const float overrideLum)
{
        atmosphere->setAverageLuminance(overrideLum);
}

Landscape* LandscapeMgr::createFromFile(const QString& landscapeFile, const QString& landscapeId)
{
        QSettings landscapeIni(landscapeFile, StelIniFormat);
        QString s;
        if (landscapeIni.status() != QSettings::NoError)
        {
                qWarning() << "ERROR parsing landscape.ini file: " << QDir::toNativeSeparators(landscapeFile);
                s = "";
        }
        else
                s = landscapeIni.value("landscape/type").toString();

        Landscape* landscape = Q_NULLPTR;
        if (s=="old_style")
                landscape = new LandscapeOldStyle();
        else if (s=="spherical")
                landscape = new LandscapeSpherical();
        else if (s=="fisheye")
                landscape = new LandscapeFisheye();
        else if (s=="polygonal")
                landscape = new LandscapePolygonal();
        else
        {
                qDebug() << "Unknown landscape type: \"" << s << "\"";

                // to avoid making this a fatal error, will load as a fisheye
                // if this fails, it just won't draw
                landscape = new LandscapeFisheye();
        }

        landscape->load(landscapeIni, landscapeId);
        return landscape;
}


QString LandscapeMgr::nameToID(const QString& name)
{
        QMap<QString,QString> nameToDirMap = getNameToDirMap();

        if (nameToDirMap.find(name)!=nameToDirMap.end())
        {
                Q_ASSERT(0);
                return "error";
        }
        else
        {
                return nameToDirMap[name];
        }
}

/****************************************************************************
 get a map of landscape names (from landscape.ini name field) to ID (dir name)
 ****************************************************************************/
QMap<QString,QString> LandscapeMgr::getNameToDirMap()
{
        QMap<QString,QString> result;
        const QSet<QString> landscapeDirs = StelFileMgr::listContents("landscapes",StelFileMgr::Directory);

        for (const auto& dir : landscapeDirs)
        {
                QString fName = StelFileMgr::findFile("landscapes/" + dir + "/landscape.ini");
                if (!fName.isEmpty())
                {
                        QSettings landscapeIni(fName, StelIniFormat);
                        QString k = landscapeIni.value("landscape/name").toString();
                        result[k] = dir;
                }
        }
        return result;
}

QString LandscapeMgr::installLandscapeFromArchive(QString sourceFilePath, const bool display, const bool toMainDirectory)
{
        Q_UNUSED(toMainDirectory)
        if (!QFile::exists(sourceFilePath))
        {
                qDebug() << "LandscapeMgr: File does not exist:" << QDir::toNativeSeparators(sourceFilePath);
                emit errorUnableToOpen(sourceFilePath);
                return QString();
        }

        QDir parentDestinationDir;
        parentDestinationDir.setPath(StelFileMgr::getUserDir());

        if (!parentDestinationDir.exists("landscapes"))
        {
                //qDebug() << "LandscapeMgr: No 'landscapes' subdirectory exists in" << parentDestinationDir.absolutePath();
                if (!parentDestinationDir.mkdir("landscapes"))
                {
                        qWarning() << "LandscapeMgr: Unable to install landscape: Unable to create sub-directory 'landscapes' in" << QDir::toNativeSeparators(parentDestinationDir.absolutePath());
                        emit errorUnableToOpen(QDir::cleanPath(parentDestinationDir.filePath("landscapes")));//parentDestinationDir.absolutePath()
                        return QString();
                }
        }
        QDir destinationDir (parentDestinationDir.absoluteFilePath("landscapes"));

        QZipReader reader(sourceFilePath);
        if (reader.status() != QZipReader::NoError)
        {
                qWarning() << "LandscapeMgr: Unable to open as a ZIP archive:" << QDir::toNativeSeparators(sourceFilePath);
                emit errorNotArchive();
                return QString();
        }

        //Detect top directory
        QString topDir, iniPath;
        const auto infoList = reader.fileInfoList();
        for (const auto& info : infoList)
        {
                QFileInfo fileInfo(info.filePath);
                if (fileInfo.fileName() == "landscape.ini")
                {
                        iniPath = info.filePath;
                        topDir = fileInfo.dir().path();
                        break;
                }
        }
        if (topDir.isEmpty())
        {
                qWarning() << "LandscapeMgr: Unable to install landscape. There is no directory that contains a 'landscape.ini' file in the source archive.";
                emit errorNotArchive();
                return QString();
        }
        //Determine the landscape's identifier
        QString landscapeID = QFileInfo(topDir).fileName();
        if (landscapeID.length() < 2)
        {
                // If the archive has no top level directory
                // use the first 65 characters of its file name for an identifier
                QFileInfo sourceFileInfo(sourceFilePath);
                landscapeID = sourceFileInfo.baseName().left(65);
        }

        //Check for duplicate IDs
        if (getAllLandscapeIDs().contains(landscapeID))
        {
                qWarning() << "LandscapeMgr: Unable to install landscape. A landscape with the ID" << landscapeID << "already exists.";
                emit errorNotUnique(landscapeID);
                return QString();
        }

        //Read the .ini file and check if the landscape name is unique
        QTemporaryFile tempLandscapeIni("landscapeXXXXXX.ini");
        if (tempLandscapeIni.open())
        {
                QByteArray iniData = reader.fileData(iniPath);
                tempLandscapeIni.write(iniData);
                tempLandscapeIni.close();
                QSettings confLandscapeIni(tempLandscapeIni.fileName(), StelIniFormat);
                QString landscapeName = confLandscapeIni.value("landscape/name").toString();
                if (getAllLandscapeNames().contains(landscapeName))
                {
                        qWarning() << "LandscapeMgr: Unable to install landscape. There is already a landscape named" << landscapeName;
                        emit errorNotUnique(landscapeName);
                        return QString();
                }
        }

        //Copy the landscape directory to the target
        //This case already has been handled - and commented out - above. :)
        if(destinationDir.exists(landscapeID))
        {
                qWarning() << "LandscapeMgr: A subdirectory" << landscapeID << "already exists in" << QDir::toNativeSeparators(destinationDir.absolutePath()) << "Its contents may be overwritten.";
        }
        else if(!destinationDir.mkdir(landscapeID))
        {
                qWarning() << "LandscapeMgr: Unable to install landscape. Unable to create" << landscapeID << "directory in" << QDir::toNativeSeparators(destinationDir.absolutePath());
                emit errorUnableToOpen(QDir::cleanPath(destinationDir.filePath(landscapeID)));
                return QString();
        }
        destinationDir.cd(landscapeID);
        for (const auto& info : infoList)
        {
                QFileInfo fileInfo(info.filePath);
                if (info.isFile && fileInfo.dir().path() == topDir)
                {
                        QByteArray data = reader.fileData(info.filePath);
                        QFile out(destinationDir.filePath(fileInfo.fileName()));
                        if (out.open(QIODevice::WriteOnly))
                        {
                                out.write(data);
                                out.close();
                        }
                        else
                        {
                                qWarning() << "LandscapeMgr: cannot open " << QDir::toNativeSeparators(fileInfo.absoluteFilePath());
                        }
                }
        }
        reader.close();
        //If necessary, make the new landscape the current landscape
        if (display)
        {
                setCurrentLandscapeID(landscapeID);
        }

        //Make sure that everyone knows that the list of available landscapes has changed
        emit landscapesChanged();

        qDebug() << "LandscapeMgr: Successfully installed landscape directory" << landscapeID << "to" << QDir::toNativeSeparators(destinationDir.absolutePath());
        return landscapeID;
}

bool LandscapeMgr::removeLandscape(const QString landscapeID)
{
        if (landscapeID.isEmpty())
        {
                qWarning() << "LandscapeMgr: Error! No landscape ID passed to removeLandscape().";
                return false;
        }

        if (packagedLandscapeIDs.contains(landscapeID))
        {
                qWarning() << "LandscapeMgr: Landscapes that are part of the default installation cannot be removed.";
                return false;
        }

        qDebug() << "LandscapeMgr: Trying to remove landscape" << landscapeID;

        QString landscapePath = getLandscapePath(landscapeID);
        if (landscapePath.isEmpty())
                return false;

        QDir landscapeDir(landscapePath);
        for (auto &fileName : landscapeDir.entryList(QDir::Files | QDir::NoDotAndDotDot))
        {
                if(!landscapeDir.remove(fileName))
                {
                        qWarning() << "LandscapeMgr: Unable to remove" << QDir::toNativeSeparators(fileName);
                        emit errorRemoveManually(landscapeDir.absolutePath());
                        return false;
                }
        }
        landscapeDir.cdUp();
        if(!landscapeDir.rmdir(landscapeID))
        {
                qWarning() << "LandscapeMgr: Error! Landscape" << landscapeID
                                   << "could not be removed. "
                                   << "Some files were deleted, but not all."
                                   << StelUtils::getEndLineChar()
                                   << "LandscapeMgr: You can delete manually" << QDir::cleanPath(landscapeDir.filePath(landscapeID));
                emit errorRemoveManually(QDir::cleanPath(landscapeDir.filePath(landscapeID)));
                return false;
        }

        qDebug() << "LandscapeMgr: Successfully removed" << QDir::toNativeSeparators(landscapePath);

        //If the landscape has been selected, revert to the default one
        //TODO: Make this optional?
        if (getCurrentLandscapeID() == landscapeID)
        {
                if(getDefaultLandscapeID() == landscapeID)
                {
                        setDefaultLandscapeID(packagedLandscapeIDs.first());
                        //TODO: Find what happens if a missing landscape is specified in the configuration file
                }

                setCurrentLandscapeID(getDefaultLandscapeID());
        }

        //Make sure that everyone knows that the list of available landscapes has changed
        emit landscapesChanged();

        return true;
}

QString LandscapeMgr::getLandscapePath(const QString landscapeID)
{
        QString result;
        //Is this necessary? This function is private.
        if (landscapeID.isEmpty())
                return result;

        result = StelFileMgr::findFile("landscapes/" + landscapeID, StelFileMgr::Directory);
        if (result.isEmpty())
        {
                qWarning() << "LandscapeMgr: Error! Unable to find" << landscapeID;
                return result;
        }

        return result;
}

QString LandscapeMgr::loadLandscapeName(const QString landscapeID)
{
        QString landscapeName;
        if (landscapeID.isEmpty())
        {
                qWarning() << "LandscapeMgr: Error! No landscape ID passed to loadLandscapeName().";
                return landscapeName;
        }

        QString landscapePath = getLandscapePath(landscapeID);
        if (landscapePath.isEmpty())
                return landscapeName;

        QDir landscapeDir(landscapePath);
        if (landscapeDir.exists("landscape.ini"))
        {
                QString landscapeSettingsPath = landscapeDir.filePath("landscape.ini");
                QSettings landscapeSettings(landscapeSettingsPath, StelIniFormat);
                landscapeName = landscapeSettings.value("landscape/name").toString();
        }
        else
        {
                qWarning() << "LandscapeMgr: Error! Landscape directory" << QDir::toNativeSeparators(landscapePath) << "does not contain a 'landscape.ini' file";
        }

        return landscapeName;
}

quint64 LandscapeMgr::loadLandscapeSize(const QString landscapeID) const
{
        quint64 landscapeSize = 0;
        if (landscapeID.isEmpty())
        {
                qWarning() << "LandscapeMgr: Error! No landscape ID passed to loadLandscapeSize().";
                return landscapeSize;
        }

        QString landscapePath = getLandscapePath(landscapeID);
        if (landscapePath.isEmpty())
                return landscapeSize;

        const QDir landscapeDir(landscapePath);
        for (auto &file : landscapeDir.entryInfoList(QDir::Files | QDir::NoDotAndDotDot))
        {
                //qDebug() << "name:" << file.baseName() << "size:" << file.size();
                landscapeSize += static_cast<quint64>(file.size());
        }

        return landscapeSize;
}

QString LandscapeMgr::getDescription() const
{
        QString lang, desc, descFile, locDescriptionFile, engDescriptionFile;
        bool hasFile = true;

        lang = StelApp::getInstance().getLocaleMgr().getAppLanguage();
        locDescriptionFile = StelFileMgr::findFile("landscapes/" + getCurrentLandscapeID(), StelFileMgr::Directory) + "/description." + lang + ".utf8";
        engDescriptionFile = StelFileMgr::findFile("landscapes/" + getCurrentLandscapeID(), StelFileMgr::Directory) + "/description.en.utf8";

        // OK. Check the file with full name of locale
        if (!QFileInfo::exists(locDescriptionFile))
        {
                // Oops...  File not exists! What about short name of locale?
                lang = lang.split("_").at(0);
                locDescriptionFile = StelFileMgr::findFile("landscapes/" + getCurrentLandscapeID(), StelFileMgr::Directory) + "/description." + lang + ".utf8";
        }

        // Check localized description for landscape
        if (!locDescriptionFile.isEmpty() && QFileInfo::exists(locDescriptionFile))
        {                
                descFile = locDescriptionFile;
        }
        // OK. Localized description of landscape not exists. What about english description of its?
        else if (!engDescriptionFile.isEmpty() && QFileInfo::exists(engDescriptionFile))
        {
                descFile = engDescriptionFile;
        }
        // That file not exists too? OK. Will be used description from landscape.ini file.
        else
        {
                hasFile = false;
        }

        if (hasFile)
        {
                QFile file(descFile);
                if(file.open(QIODevice::ReadOnly | QIODevice::Text))
                {
                        QTextStream in(&file);
#if (QT_VERSION>=QT_VERSION_CHECK(6,0,0))
                        in.setEncoding(QStringConverter::Utf8);
#else
                        in.setCodec("UTF-8");
#endif
                        desc = in.readAll();
                        file.close();
                }
        }
        else
        {
                desc = QString("<h2>%1</h2>").arg(q_(landscape->getName()));
                desc += landscape->getDescription();
        }

        return desc;
}

void LandscapeMgr::increaseLightPollution()
{
        StelCore* core = StelApp::getInstance().getCore();
        const auto lum = core->getSkyDrawer()->getLightPollutionLuminance();
        auto bidx = core->luminanceToBortleScaleIndex(lum) + 1;
        if (bidx>9)
                bidx = 9;
        const auto newLum = core->bortleScaleIndexToLuminance(bidx);
        core->getSkyDrawer()->setLightPollutionLuminance(newLum);
}

void LandscapeMgr::reduceLightPollution()
{
        StelCore* core = StelApp::getInstance().getCore();
        const auto lum = core->getSkyDrawer()->getLightPollutionLuminance();
        auto bidx = core->luminanceToBortleScaleIndex(lum) - 1;
        if (bidx<1)
                bidx = 1;
        const auto newLum = core->bortleScaleIndexToLuminance(bidx);
        core->getSkyDrawer()->setLightPollutionLuminance(newLum);
}

void LandscapeMgr::cyclicChangeLightPollution()
{
        StelCore* core = StelApp::getInstance().getCore();
        const auto lum = core->getSkyDrawer()->getLightPollutionLuminance();
        auto bidx = core->luminanceToBortleScaleIndex(lum) + 1;
        if (bidx>9)
                bidx = 1;
        const auto newLum = core->bortleScaleIndexToLuminance(bidx);
        core->getSkyDrawer()->setLightPollutionLuminance(newLum);
}

/*
// GZ: Addition to identify landscape transparency. Used for development and debugging only, should be commented out in release builds.
// Also, StelMovementMgr l.382 event->accept() must be commented out for this here to work!
void LandscapeMgr::handleMouseClicks(QMouseEvent *event)
{
        switch (event->button())
        {
        case Qt::LeftButton :
                if (event->type()==QEvent::MouseButtonRelease)
                {
                        Vec3d v;
                        StelApp::getInstance().getCore()->getProjection(StelCore::FrameAltAz, StelCore::RefractionOff)->unProject(event->x(),event->y(),v);
                        v.normalize();
                        float trans=landscape->getOpacity(v);
                        qDebug() << "Landscape opacity at screen X=" << event->x() << ", Y=" << event->y() << ": " << trans;
                }
                break;
        default: break;

        }
        // do not event->accept(), so that it is forwarded to other modules.
        return;
}
*/

void LandscapeMgr::showMessage(const QString& message)
{
        messageToShow=message;
        messageFader=true;
        messageTimer->start();
}

void LandscapeMgr::clearMessage()
{
        messageFader = false;
}

Stellarium / stellarium / 3996069357

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