public static void DumpLocation(GeoPoint p, Stream stream)
{
using (var writer = new BinaryWriter (stream, System.Text.Encoding.UTF8, true)) {
writer.Write (p.Lat);
writer.Write (p.Lon);
}
}
// Use spherical law of cosines
public static double Distance(GeoPoint p1, GeoPoint p2)
{
const int EarthRadius = 6371;
return Math.Acos (Math.Sin (DegToRad (p1.Lat)) * Math.Sin (DegToRad (p2.Lat)) +
Math.Cos (DegToRad (p1.Lat)) * Math.Cos (DegToRad (p2.Lat)) *
Math.Cos (DegToRad (p2.Lon) - DegToRad (p1.Lon))) * EarthRadius;
}
public static StationCardFragment WithStation(Station station, GeoPoint currentLocation, BikeActionStatus status)
{
var r = new StationCardFragment ();
r.station = station;
r.currentLocation = currentLocation;
r.status = status;
return r;
}
public StationGridAdapter(FragmentManager manager, IList<Station> stations, GeoPoint currentLocation, BikeActionStatus status)
: base(manager)
{
this.stations = stations;
this.currentLocation = currentLocation;
this.status = status;
this.background = ImageReference.ForDrawable (Resource.Drawable.pager_background);
this.background2 = ImageReference.ForDrawable (Resource.Drawable.pager_background2);
}
internal async void LoadMap (GeoPoint point, FavoriteView view, ImageView mapView, long version)
{
var url = MakeMapUrl (point);
var bmp = await LoadInternal (url, MapCache);
if (bmp != null && view.VersionNumber == version) {
mapView.AlphaAnimate (0, duration: 150, endAction: () => {
mapView.SetImageDrawable (new RoundCornerDrawable (bmp));
mapView.AlphaAnimate (1, duration: 250);
});
}
}
public static string MakeMapUrl (GeoPoint location)
{
const int Width = 65;
const int Height = 42;
var parameters = new Dictionary<string, string> {
{ "key", ApiKey },
{ "zoom", "13" },
{ "sensor", "true" },
{ "size", Width.ToPixels () + "x" + Height.ToPixels () },
{ "center", location.Lat + "," + location.Lon },
{ "markers", "size:tiny|" + location.Lat + "," + location.Lon }
};
return BuildUrl ("https://maps.googleapis.com/maps/api/staticmap?",
parameters);
}
