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Async loading of NaturalEarth data for launcher.

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This commit is contained in:
James Turner 2016-08-08 23:13:57 +01:00
parent 8577d74430
commit 7cebc76b9d
1 changed files with 57 additions and 34 deletions
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91
src/GUI/QtLauncher.cxx
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@ -47,6 +47,7 @@
#include <QSpinBox>
#include <QDoubleSpinBox>
#include <QProcess>
#include <QThread>
// Simgear
#include <simgear/timing/timestamp.hxx>
@ -257,6 +258,60 @@ private:
};
};
class NaturalEarthDataLoaderThread : public QThread
{
Q_OBJECT
public:
NaturalEarthDataLoaderThread()
{
connect(this, &QThread::finished, this, &NaturalEarthDataLoaderThread::onFinished);
}
protected:
virtual void run() Q_DECL_OVERRIDE
{
SGTimeStamp st;
st.stamp();
loadNaturalEarthFile("ne_10m_coastline.shp", flightgear::PolyLine::COASTLINE, false);
loadNaturalEarthFile("ne_10m_rivers_lake_centerlines.shp", flightgear::PolyLine::RIVER, false);
loadNaturalEarthFile("ne_10m_lakes.shp", flightgear::PolyLine::LAKE, true);
qDebug() << "load basic data took" << st.elapsedMSec();
st.stamp();
loadNaturalEarthFile("ne_10m_urban_areas.shp", flightgear::PolyLine::URBAN, true);
qDebug() << "loading urban areas took:" << st.elapsedMSec();
}
private:
void onFinished()
{
flightgear::PolyLine::bulkAddToSpatialIndex(m_parsedLines);
qDebug() << "finished loading Natural Earth data";
deleteLater(); // commit suicide
}
void loadNaturalEarthFile(const std::string& aFileName,
flightgear::PolyLine::Type aType,
bool areClosed)
{
SGPath path(globals->get_fg_root());
path.append( "Geodata" );
path.append(aFileName);
if (!path.exists())
return; // silently fail for now
flightgear::PolyLineList lines;
flightgear::SHPParser::parsePolyLines(path, aType, m_parsedLines, areClosed);
}
flightgear::PolyLineList m_parsedLines;
};
} // of anonymous namespace
class AircraftProxyModel : public QSortFilterProxyModel
@ -405,39 +460,6 @@ void initApp(int& argc, char** argv)
}
}
void loadNaturalEarthFile(const std::string& aFileName,
flightgear::PolyLine::Type aType,
bool areClosed)
{
SGPath path(globals->get_fg_root());
path.append( "Geodata" );
path.append(aFileName);
if (!path.exists())
return; // silently fail for now
flightgear::PolyLineList lines;
flightgear::SHPParser::parsePolyLines(path, aType, lines, areClosed);
flightgear::PolyLine::bulkAddToSpatialIndex(lines);
}
void loadNaturalEarthData()
{
SGTimeStamp st;
st.stamp();
loadNaturalEarthFile("ne_10m_coastline.shp", flightgear::PolyLine::COASTLINE, false);
loadNaturalEarthFile("ne_10m_rivers_lake_centerlines.shp", flightgear::PolyLine::RIVER, false);
loadNaturalEarthFile("ne_10m_lakes.shp", flightgear::PolyLine::LAKE, true);
qDebug() << "load basic data took" << st.elapsedMSec();
st.stamp();
loadNaturalEarthFile("ne_10m_urban_areas.shp", flightgear::PolyLine::URBAN, true);
qDebug() << "loading urban areas took:" << st.elapsedMSec();
}
bool runLauncherDialog()
{
// startup the nav-cache now. This pre-empts normal startup of
@ -460,7 +482,8 @@ bool runLauncherDialog()
// will happen as normal
http->init();
loadNaturalEarthData();
NaturalEarthDataLoaderThread* naturalEarthLoader = new NaturalEarthDataLoaderThread;
naturalEarthLoader->start();
// avoid double Apple menu and other weirdness if both Qt and OSG
// try to initialise various Cocoa structures.