public void UpdateBounds()////////////////////////////
{
if (!IsStarted || Provider.Equals(EmptyProvider.Instance))
{
return;
}
updatingBounds = true;
tileDrawingListLock.AcquireWriterLock();
try
{
#region -- find tiles around --
tileDrawingList.Clear();
for (long i = (int)Math.Floor(-sizeOfMapArea.Width * scaleX), countI =
(int)Math.Ceiling(sizeOfMapArea.Width * scaleX); i <= countI; i++)
{
for (long j = (int)Math.Floor(-sizeOfMapArea.Height * scaleY), countJ =
(int)Math.Ceiling(sizeOfMapArea.Height * scaleY); j <= countJ; j++)
{
GPoint p = centerTileXYLocation;
p.X += i;
p.Y += j;
if (p.X >= minOfTiles.Width && p.Y >= minOfTiles.Height && p.X <= maxOfTiles.Width &&
p.Y <= maxOfTiles.Height)
{
DrawTile dt = new DrawTile()
{
PosXY = p,
PosPixel = new GPoint(p.X * tileRect.Width, p.Y * tileRect.Height),
DistanceSqr = (centerTileXYLocation.X - p.X) * (centerTileXYLocation.X - p.X) +
(centerTileXYLocation.Y - p.Y) * (centerTileXYLocation.Y - p.Y)
};
if (!tileDrawingList.Contains(dt))
{
tileDrawingList.Add(dt);
}
}
}
}
if (GMaps.Instance.ShuffleTilesOnLoad)
{
Stuff.Shuffle <DrawTile>(tileDrawingList);
}
else
{
tileDrawingList.Sort();
}
#endregion
}
finally
{
tileDrawingListLock.ReleaseWriterLock();
}
Interlocked.Exchange(ref loadWaitCount, 0);
tileDrawingListLock.AcquireReaderLock();
try
{
foreach (DrawTile p in tileDrawingList)
{
LoadTask task = new LoadTask(p.PosXY, Zoom, this);
AddLoadTask(task);
}
}
finally
{
tileDrawingListLock.ReleaseReaderLock();
}
{
LastTileLoadStart = DateTime.Now;
Debug.WriteLine("OnTileLoadStart - at zoom " + Zoom + ", time: " + LastTileLoadStart.TimeOfDay);
}
updatingBounds = false;
OnTileLoadStart?.Invoke();
}
protected PureImage GetTileImageUsingHttp(string url)
{
PureImage ret = null;
#if !PocketPC
WebRequest request = IsSocksProxy ? SocksHttpWebRequest.Create(url) : WebRequest.Create(url);
#else
WebRequest request = WebRequest.Create(url);
#endif
if (WebProxy != null)
{
request.Proxy = WebProxy;
}
if (Credential != null)
{
request.PreAuthenticate = true;
request.Credentials = Credential;
}
if (!string.IsNullOrEmpty(Authorization))
{
request.Headers.Set("Authorization", Authorization);
}
if (request is HttpWebRequest)
{
var r = request as HttpWebRequest;
r.UserAgent = UserAgent;
r.ReadWriteTimeout = TimeoutMs * 6;
r.Accept = requestAccept;
r.Referer = RefererUrl;
r.Timeout = TimeoutMs;
}
#if !PocketPC
else if (request is SocksHttpWebRequest)
{
var r = request as SocksHttpWebRequest;
if (!string.IsNullOrEmpty(UserAgent))
{
r.Headers.Add("User-Agent", UserAgent);
}
if (!string.IsNullOrEmpty(requestAccept))
{
r.Headers.Add("Accept", requestAccept);
}
if (!string.IsNullOrEmpty(RefererUrl))
{
r.Headers.Add("Referer", RefererUrl);
}
}
#endif
using (var response = request.GetResponse())
{
if (CheckTileImageHttpResponse(response))
{
using (Stream responseStream = response.GetResponseStream())
{
MemoryStream data = Stuff.CopyStream(responseStream, false);
Debug.WriteLine("Response[" + data.Length + " bytes]: " + url);
if (data.Length > 0)
{
ret = TileImageProxy.FromStream(data);
if (ret != null)
{
ret.Data = data;
ret.Data.Position = 0;
}
else
{
data.Dispose();
}
}
data = null;
}
}
else
{
Debug.WriteLine("CheckTileImageHttpResponse[false]: " + url);
}
#if PocketPC
request.Abort();
#endif
response.Close();
}
return(ret);
}