private void GetTile(TileCoordWrap tileWrap)
{
try
{
Interlocked.Increment(ref _currTileIndex);
using (Stream stream = _source.GetTile(tileWrap.Tile))
{
string filePath = _tilePathBuilder.BuildTilePath(tileWrap.Tile);
using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
byte[] buffer = new byte[8192];//8K
int ret = stream.Read(buffer, 0, buffer.Length);
while (ret > 0)
{
fs.Write(buffer, 0, ret);
ret = stream.Read(buffer, 0, buffer.Length);
}
tileWrap.OnSuccess?.Invoke();
OnTileLoaded(tileWrap.Tile);
}
}
}
catch (Exception ex)
{
tileWrap.OnFailed.Invoke(tileWrap.Tile, ex);
}
finally
{
tileWrap.OnFinally.Invoke(tileWrap.Tile);
}
}
public void Start()
{
if (!_isStop)
{
_blockingQueue = new BlockingCollection <TileCoord>(_threadCount);
_tokenSource = new CancellationTokenSource();
var token = _tokenSource.Token;
var taskFactory = new TaskFactory(TaskCreationOptions.LongRunning, TaskContinuationOptions.LongRunning);
for (int i = 0; i < _threadCount; i++)
{
Task workThread = taskFactory.StartNew(() =>
{
while (!_isStop)
{
token.ThrowIfCancellationRequested();
TileCoord tileCoord = null;
if (_blockingQueue.TryTake(out tileCoord, 100))
//tileCoord = _blockingQueue.Take();
//if (tileCoord != null)
{
using (Stream stream = _source.GetTile(tileCoord))
{
string filePath = _tilePathBuilder.BuildTilePath(tileCoord);
using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
int ret = 0;
byte[] buffer = new byte[8192];//8K
ret = stream.Read(buffer, 0, buffer.Length);
while (ret > 0)
{
fs.Write(buffer, 0, ret);
ret = stream.Read(buffer, 0, buffer.Length);
}
OnTileLoaded(tileCoord);
}
}
}
//else
//{
// token.WaitHandle.WaitOne(100);
//}
}
}, token);
}
List <Extent> fullTileRange = _source.TileGrid.TileRanges;
for (int z = 0; z < fullTileRange.Count; z++)
{
_tilePathBuilder.BuildZoomFold(z, _offsetZoom);
for (double x = fullTileRange[z].MinX; x <= fullTileRange[z].MaxX; ++x)
{
for (double y = fullTileRange[z].MinY; y <= fullTileRange[z].MaxY; ++y)
{
var tile = new TileCoord(z, x, y);
//_blockingQueue.TryAdd(tile, 500);
_blockingQueue.Add(tile);
}
}
}
}
}