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Improved map index caching

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This commit is contained in:
Martin Tůma 2018-03-09 18:56:54 +01:00
parent de05f5e64b
commit bc881836ac
2 changed files with 17 additions and 19 deletions
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30
src/map/atlas.cpp
View File

@ -79,7 +79,8 @@ void Atlas::computeBounds()
BR(_maps.at(i))), QRectF(offsets.at(i), _maps.at(i)->bounds().size())));
}
Atlas::Atlas(const QString &fileName, QObject *parent) : Map(parent)
Atlas::Atlas(const QString &fileName, QObject *parent)
: Map(parent), _zoom(0), _mapIndex(-1), _valid(false)
{
QFileInfo fi(fileName);
QByteArray ba;
@ -87,10 +88,7 @@ Atlas::Atlas(const QString &fileName, QObject *parent) : Map(parent)
Tar tar(fileName);
_valid = false;
_zoom = 0;
_name = fi.dir().dirName();
_ci = -1; _cz = -1;
if (suffix == "tar") {
if (!tar.open()) {
@ -180,6 +178,7 @@ qreal Atlas::resolution(const QRectF &rect) const
int Atlas::zoomFit(const QSize &size, const RectC &br)
{
_zoom = 0;
_mapIndex = -1;
if (!br.isValid()) {
_zoom = _zooms.size() - 1;
@ -209,12 +208,16 @@ int Atlas::zoomFit(const QSize &size, const RectC &br)
int Atlas::zoomIn()
{
_zoom = qMin(_zoom + 1, _zooms.size() - 1);
_mapIndex = -1;
return _zoom;
}
int Atlas::zoomOut()
{
_zoom = qMax(_zoom - 1, 0);
_mapIndex = -1;
return _zoom;
}
@ -222,26 +225,21 @@ QPointF Atlas::ll2xy(const Coordinates &c)
{
QPointF pp;
if (_cz != _zoom) {
_ci = -1;
_cz = _zoom;
}
if (_ci >= 0)
pp = _maps.at(_ci)->ll2pp(c);
if (_ci < 0 || !_bounds.at(_ci).first.contains(pp)) {
_ci = _zooms.at(_zoom).first;
if (_mapIndex >= 0)
pp = _maps.at(_mapIndex)->ll2pp(c);
if (_mapIndex < 0 || !_bounds.at(_mapIndex).first.contains(pp)) {
_mapIndex = _zooms.at(_zoom).first;
for (int i = _zooms.at(_zoom).first; i <= _zooms.at(_zoom).second; i++) {
pp = _maps.at(i)->ll2pp(c);
if (_bounds.at(i).first.contains(pp)) {
_ci = i;
_mapIndex = i;
break;
}
}
}
QPointF p = _maps.at(_ci)->pp2xy(pp);
return p + _bounds.at(_ci).second.topLeft();
QPointF p = _maps.at(_mapIndex)->pp2xy(pp);
return p + _bounds.at(_mapIndex).second.topLeft();
}
Coordinates Atlas::xy2ll(const QPointF &p)

6
src/map/atlas.h
View File

@ -40,15 +40,15 @@ private:
void computeBounds();
QString _name;
bool _valid;
QString _errorString;
QList<OfflineMap*> _maps;
QVector<QPair<int, int> > _zooms;
QVector<QPair<QRectF, QRectF> > _bounds;
int _zoom;
int _mapIndex;
int _ci, _cz;
bool _valid;
QString _errorString;
};
#endif // ATLAS_H