public static double Bearing(this Location p1, Location p2)
{
return Bearing(p1.Latitude, p1.Longitude, p2.Latitude, p2.Longitude);
}
public static double DistanceInKilometres(this Location p1, Location p2)
{
return Math.Abs(HaversineInKM(p1.Latitude, p1.Longitude, p2.Latitude, p2.Longitude));
}
private void UpdateLocation(Geoposition position)
{
if (world == null)
{
return;
}
var currentLocation = new Location {Latitude = position.Coordinate.Point.Position.Latitude, Longitude = position.Coordinate.Point.Position.Longitude};
world.UpdateLocation(currentLocation);
}
private void LocationManager_LocationsUpdated(object sender, CLLocationsUpdatedEventArgs e)
{
try
{
var position = e.Locations?.FirstOrDefault();
if (position == null)
{
return;
}
var currentLocation = new Location {Latitude = position.Coordinate.Latitude, Longitude = position.Coordinate.Longitude};
world.UpdateLocation(currentLocation);
foreach (var view in events.Keys)
{
var poi = events[view];
poi.Element.DistanceMetres = currentLocation.DistanceInMetres(poi.Element.GeoLocation);
var distanceLabel = view.Subviews?.FirstOrDefault(v => v is UILabel) as UILabel;
if (distanceLabel == null) continue;
var distance = events[view].Element.DistanceAway;
distanceLabel.Text = distance;
var frameWidth = distanceLabel.IntrinsicContentSize.Width;
distanceLabel.Frame = new CGRect(0, 0, frameWidth, 15);
view.Bounds = new CGRect(0, 0, frameWidth, 50);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
public void OnLocationChanged(global::Android.Locations.Location location)
{
var position = new Location {Latitude = location.Latitude, Longitude = location.Longitude};
world?.UpdateLocation(position);
}