///Returns the clouds that are available for the user's location
public async Task<List<Cloud>> GetAvailableClouds(double latitude, double longitude)
{
var clouds = new List<Cloud>();
//get clouds
clouds = await cloudTable.ToListAsync();
//remove if not in range
for (int i = (clouds.Count-1); i>=0;i-- )
{
var dist = Distance(clouds[i].Latitude,clouds[i].Longitude,latitude,longitude);
if(!(dist<clouds[i].Radius)){
clouds.RemoveAt(i);
}
}
return clouds;
}