protected virtual void GetTile(TileCoordWrap tileWrap)
{
try
{
string url = _source.GetRequestUrl(tileWrap.Tile);
Interlocked.Increment(ref _currTileIndex);
lock (_lastTiles)
{
_lastTiles.Enqueue(tileWrap.Tile);//记录最后一次Tile，下次执行时继续。
}
using (Stream stream = _tileLoadStrategy.GetTile(url))
{
_outputStrategy.Write(stream, _source.GetOutputTile(tileWrap.Tile, _mapConfig.OffsetZoom));
tileWrap.OnSuccess.Invoke(tileWrap.Tile);
}
}
catch (Exception ex)
{
tileWrap.OnFailed.Invoke(tileWrap.Tile, ex);
}
finally
{
tileWrap.OnFinally.Invoke(tileWrap.Tile);
}
}
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);
}
}