/// <summary>
/// Find the closest museum near the user
/// </summary>
/// @author Gabriele Ursini
private async Task findClosestMuseumAsync(positionWrapper position)
{
if (latestPosition == null)
{
latestPosition = position;
}
else
{
if (position.getDistance(latestPosition.position) >= DISTANCE_BEFORE_RECOMPUTATION)
{
latestPosition = position;
}
else
{
return;
}
}
var museumRequest = await PersistanceStorage.PersistanceStorage.Instance.getClosestMuseumAsync(new PersistanceStorage.PersistanceStorage.requestWrapper()
{
lat = latestPosition.position.Latitude,
lon = latestPosition.position.Longitude,
});
current = museumRequest.getMuseum();
if (current != null)
{
System.System.Instance.vibrate();
pageStack.Children.Add(museum_view = new view_Museum(this.current));
}
}
/// <summary>
/// Handle the change of position.
/// </summary>
/// @author Gabriele Ursini
private async void HandlePositionChanged(object sender, PositionEventArgs e)
{
positionWrapper new_position = new positionWrapper()
{
position = new Xamarin.Essentials.Location(e.Position.Latitude, e.Position.Longitude)
};
await this.findClosestMuseumAsync(new_position);
}
