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mapwidgethelper: add the same logic for markers as in globe.cpp

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The marble globe tracks dive sites with the same name and discards
such that are less than 50 meters apart.

We already store names in MapLocation objects, but using a
QMap<QString, MapLocation *> to check the names is probably faster
with the expense of using more memory.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
This commit is contained in:
Lubomir I. Ivanov 2017-07-27 23:49:28 +03:00 • committed by Dirk Hohndel
parent ff4924f650
commit 5e57e42874
1 changed files with 25 additions and 13 deletions
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38
mobile-widgets/qmlmapwidgethelper.cpp
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@ -37,26 +37,38 @@ void MapWidgetHelper::reloadMapLocations()
{
struct dive_site *ds;
int idx;
QMap<QString, MapLocation *> locationNameMap;
m_mapLocationModel->clear();
MapLocation *location;
QVector<MapLocation *> locationList;
qreal latitude, longitude;
if (displayed_dive_site.uuid && dive_site_has_gps_location(&displayed_dive_site)) {
latitude = displayed_dive_site.latitude.udeg * 0.000001;
longitude = displayed_dive_site.longitude.udeg * 0.000001;
location = new MapLocation(displayed_dive_site.uuid, QGeoCoordinate(latitude, longitude),
QString(displayed_dive_site.name));
locationList.append(location);
locationNameMap[QString(displayed_dive_site.name)] = location;
}
for_each_dive_site(idx, ds) {
if (!dive_site_has_gps_location(ds))
if (!dive_site_has_gps_location(ds) || ds->uuid == displayed_dive_site.uuid)
continue;
const qreal latitude = ds->latitude.udeg * 0.000001;
const qreal longitude = ds->longitude.udeg * 0.000001;
latitude = ds->latitude.udeg * 0.000001;
longitude = ds->longitude.udeg * 0.000001;
QGeoCoordinate dsCoord(latitude, longitude);
// check if there are no locations too close to the current dive site
bool diveSiteTooClose = false;
foreach(MapLocation *location, locationList) {
QGeoCoordinate coord = qvariant_cast<QGeoCoordinate>(location->getRole(MapLocation::Roles::RoleCoordinate));
if (dsCoord.distanceTo(coord) < MIN_DISTANCE_BETWEEN_DIVE_SITES_M) {
diveSiteTooClose = true;
break;
}
QString name(ds->name);
// don't add dive locations with the same name, unless they are
// at least MIN_DISTANCE_BETWEEN_DIVE_SITES_M apart
if (locationNameMap[name]) {
MapLocation *existingLocation = locationNameMap[name];
QGeoCoordinate coord = qvariant_cast<QGeoCoordinate>(existingLocation->getRole(MapLocation::Roles::RoleCoordinate));
if (dsCoord.distanceTo(coord) < MIN_DISTANCE_BETWEEN_DIVE_SITES_M)
continue;
}
if (!diveSiteTooClose)
locationList.append(new MapLocation(ds->uuid, QGeoCoordinate(latitude, longitude), QString(ds->name)));
location = new MapLocation(ds->uuid, dsCoord, name);
locationList.append(location);
locationNameMap[name] = location;
}
m_mapLocationModel->addList(locationList);
}