}
}
- public static boolean check_lat_lon(double lat, double lon) {
+ private static boolean west_of(double a, double b) {
+ double diff = b - a;
+
+ while (diff >= 360.0)
+ diff -= 360.0;
+ while (diff <= -360.0)
+ diff += 360.0;
+
+ return diff >= 0;
+ }
+
+ public static boolean check_lat_lon(double lat, double lon, int zoom) {
+ AltosMapTransform transform = new AltosMapTransform(px_size, px_size, zoom, new AltosLatLon(lat, lon));
+
+ AltosLatLon upper_left = transform.screen_lat_lon(new AltosPointInt(0, 0));
+ AltosLatLon lower_right = transform.screen_lat_lon(new AltosPointInt(px_size, px_size));
+
synchronized (launch_sites_ready) {
if (launch_sites == null) {
try {
}
for (AltosLaunchSite site : launch_sites) {
+
+ /* Figure out which point in the tile to
+ * measure to the site That's one of the edges
+ * or the site location depend on where the
+ * site is in relation to the tile
+ */
+
+ double check_lon;
+
+ if (west_of(site.longitude, upper_left.lon))
+ check_lon = upper_left.lon;
+ else if (west_of(lower_right.lon, site.longitude))
+ check_lon = lower_right.lon;
+ else
+ check_lon = site.longitude;
+
+ double check_lat;
+
+ if (site.latitude < lower_right.lat)
+ check_lat = lower_right.lat;
+ else if (upper_left.lat < site.latitude)
+ check_lat = upper_left.lat;
+ else
+ check_lat = site.latitude;
+
AltosGreatCircle gc = new AltosGreatCircle(site.latitude, site.longitude,
- lat, lon);
+ check_lat, check_lon);
+
if (gc.distance <= valid_radius)
return true;
}