public GenericRasterTileDownloader(
MapControl.WPF.TileSource tileSource,
OverlapBorderPresence overlapBordersPresence,
Dispatcher uiThreadDispatcher)
{
tileUriDelegate = tileId => VectorMath.TileSourceGetUriWrapper(tileSource, tileId);
tileImageDelegate = tileSource.DirectImage is null ? (tileId => tileSource.GetImage(tileId.X, tileId.Y, tileId.LevelOfDetail - 8)) : (TileImageDelegate)(tileId => tileSource.DirectImage(tileId.X, tileId.Y, tileId.LevelOfDetail - 8));
this.tileSource = tileSource;
OverlapBorderPresence = overlapBordersPresence;
this.uiThreadDispatcher = uiThreadDispatcher;
}
public BitmapImageRequest CreateRequest(TileImageDelegate getImage, NetworkPriority networkPriority, object userToken, BitmapImageRequestCompletedHandler callback)
{
var bitmapImageRequest = new BitmapImageRequest(getImage, userToken, callback)
{
NetworkPriority = networkPriority
};
lock (pendingRequests)
pendingRequests.Add(bitmapImageRequest);
thereMayBeWorkToDo.Set();
return(bitmapImageRequest);
}
public BitmapImageRequest(TileImageDelegate getImage, object userToken, BitmapImageRequestCompletedHandler callback)
{
GetImage = getImage;
UserToken = userToken;
Callback = callback;
}
