internal static ImageSource GetImage(TileID tid)
{
if (!dic.ContainsKey(tid))
{
var image = MyImageDownloaderAsync.GetImageS(tid);
dic.Add(tid, image);
}
return(dic[tid]);
}
private void AddTiles(Rect newvp)
{
//если зум новый то добавить тайлы
double vpX = newvp.X;
var firstTileXIndex = (int)Math.Floor(-1 * vpX / Constants.TileSize);
var firstTileYIndex = (int)Math.Floor(-1 * newvp.Y / Constants.TileSize);
var coordX = vpX + firstTileXIndex * Constants.TileSize;
var coordY = newvp.Y + firstTileYIndex * Constants.TileSize;
while (firstTileYIndex < 0)
{
firstTileYIndex++;
coordY += Constants.TileSize;
}
while (firstTileXIndex < 0)
{
firstTileXIndex++;
coordX += Constants.TileSize;
}
int currentXIndex = 0;
int currentYIndex = 0;
var currentCoordX = coordX;
var currentCoordY = coordY;
#if DEBUG
int querypiccounter = 0;
#endif
do
{
do
{
var tp = new TilePosition
{
X = currentXIndex + firstTileXIndex,
Y = currentYIndex + firstTileYIndex
};
TileID tid = new TileID {
Pos = tp, Zoom = Zoom
};
Tile tile = new Tile(tid);
try
{
#if DEBUG
querypiccounter++;
#endif
tile.SetImage();
}
catch (TileIndexOutOfRangeException)
{
}
_map.Children.Add(tile);
Panel.SetZIndex(tile, 0);
Canvas.SetLeft(tile, currentCoordX);
Canvas.SetTop(tile, currentCoordY);
currentCoordX += Constants.TileSize;
currentXIndex++;
var contX = MyImageDownloaderAsync.IsIndexCorrect(currentXIndex, Zoom);
if (!contX)
{
break;
}
} while (currentCoordX <= _map.ActualWidth);
currentCoordY += Constants.TileSize;
currentYIndex++;
currentCoordX = coordX;
currentXIndex = 0;
var contY = MyImageDownloaderAsync.IsIndexCorrect(currentYIndex, Zoom);
if (!contY)
{
break;
}
} while (currentCoordY <= _map.ActualHeight);
#if DEBUG
// Debug.Print("qpc {0}",querypiccounter);
#endif
}