public async Task <WalkerResponse> MakeRequest(string body)
{
var request = new HttpRequestMessage
{
Method = HttpMethod.Get,
RequestUri = new Uri(SERVER_URL),
Content = new StringContent(body, Encoding.UTF8)
};
var response = await client.SendAsync(request).ConfigureAwait(false);
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
return(WalkerResponse.FromJson(responseBody));
}
private void ProcessTileResponse(WalkerResponse walkerResponse)
{
foreach (Element element in walkerResponse.elements)
{
if (element.type == "node")
{
if (!nodes.ContainsKey(element.id))
{
nodes.Add(element.id, new Node(element));
}
}
else if (element.type == "way")
{
if (!ways.ContainsKey(element.id))
{
ways.Add(element.id, new Way(element));
}
}
}
}
public async Task LoadTile(Tile tile)
{
Console.WriteLine("Loading tile {0}", tile);
string bodyFormat =
"[out:json];" +
"node({0}, {1}, {2}, {3});" +
"way(bn);" +
"(._; node(w););" +
"out;";
string body = string.Format(bodyFormat, tile.Lat1, tile.Lon1, tile.Lat2, tile.Lon2);
WalkerResponse walkerResponse = await networkingManager.MakeRequest(body).ConfigureAwait(false);
Console.WriteLine("Processing tile {0}", tile);
ProcessTileResponse(walkerResponse);
Console.WriteLine("Done loading tile {0}", tile);
loadedTiles.Add(tile);
}