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Move to core

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This commit is contained in:
Victor Shcherb 2013-01-21 18:19:14 +01:00
parent 99a1749c79
commit c4e0f87871
1 changed files with 0 additions and 118 deletions
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OsmAnd/src/net/osmand/plus/CurrentPositionHelper.java
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package net.osmand.plus;
import java.io.IOException;
import net.osmand.Location;
import net.osmand.binary.RouteDataObject;
import net.osmand.osm.MapUtils;
import net.osmand.router.BinaryRoutePlanner.RouteSegment;
import net.osmand.router.GeneralRouter.GeneralRouterProfile;
import net.osmand.router.RoutePlannerFrontEnd;
import net.osmand.router.RoutingConfiguration;
import net.osmand.router.RoutingContext;
public class CurrentPositionHelper {
private RouteDataObject lastFound;
private Location lastAskedLocation = null;
private Thread calculatingThread = null;
private RoutingContext ctx;
private OsmandApplication app;
private ApplicationMode am;
public CurrentPositionHelper(OsmandApplication app) {
this.app = app;
}
private void initCtx(OsmandApplication app) {
ResourceManager r = app.getResourceManager();
am = app.getSettings().getApplicationMode();
GeneralRouterProfile p ;
if (am == ApplicationMode.BICYCLE) {
p = GeneralRouterProfile.BICYCLE;
} else if (am == ApplicationMode.PEDESTRIAN) {
p = GeneralRouterProfile.PEDESTRIAN;
} else {
p = GeneralRouterProfile.CAR;
}
RoutingConfiguration cfg = RoutingConfiguration.getDefault().build(p.name().toLowerCase(), 10);
ctx = new RoutingContext(cfg, null, r.getRoutingMapFiles());
}
private RouteDataObject runUpdateInThread(Location loc) {
RoutePlannerFrontEnd rp = new RoutePlannerFrontEnd(false);
try {
if(ctx == null || am != app.getSettings().getApplicationMode()) {
initCtx(app);
}
RouteSegment sg = rp.findRouteSegment(loc.getLatitude(), loc.getLongitude(), ctx);
return sg.getRoad();
} catch (IOException e) {
return null;
}
}
private void scheduleRouteSegmentFind(final Location loc){
if(calculatingThread == Thread.currentThread()) {
lastFound = runUpdateInThread(loc);
} else if(calculatingThread == null && loc != null) {
calculatingThread = new Thread(new Runnable() {
@Override
public void run() {
try {
lastFound = runUpdateInThread(loc);
if (lastAskedLocation != loc) {
// refresh and run new task if needed
getLastKnownRouteSegment(lastAskedLocation);
}
} finally {
calculatingThread = null;
}
}
});
calculatingThread.start();
}
}
private static double getOrthogonalDistance(RouteDataObject r, Location loc){
double d = 1000;
if (r.getPointsLength() > 0) {
double pLt = MapUtils.get31LatitudeY(r.getPoint31YTile(0));
double pLn = MapUtils.get31LongitudeX(r.getPoint31XTile(0));
for (int i = 1; i < r.getPointsLength(); i++) {
double lt = MapUtils.get31LatitudeY(r.getPoint31YTile(i));
double ln = MapUtils.get31LongitudeX(r.getPoint31XTile(i));
double od = MapUtils.getOrthogonalDistance(loc.getLatitude(), loc.getLongitude(), pLt, pLn, lt, ln);
if (od < d) {
d = od;
}
pLt = lt;
pLn = ln;
}
}
return d;
}
public RouteDataObject getLastKnownRouteSegment(Location loc) {
lastAskedLocation = loc;
RouteDataObject r = lastFound;
if (loc == null || loc.getAccuracy() > 50) {
return null;
}
if (r == null) {
scheduleRouteSegmentFind(loc);
return null;
}
double d = getOrthogonalDistance(r, loc);
if (d > 25) {
scheduleRouteSegmentFind(loc);
}
if (d < 70) {
return r;
}
return null;
}
}