protected override string CreateRequestUriCore(TileIndex index)
{
int y = MapTileProvider.GetSideTilesCount(index.Level) - 1 - index.Y;
string uri = String.Format(UriFormat, index.X, y, (18 - index.Level));
return(uri);
}
protected override string CreateRequestUriCore(TileIndex index)
{
int z = (int)index.Level;
int shift = MapTileProvider.GetSideTilesCount(z) / 2;
int x = index.X + shift;
int y = MapTileProvider.GetSideTilesCount(z) - 1 - index.Y - shift;
char serverIdx = (char)('a' + CurrentServer);
string uri = "";
switch (renderer)
{
case OpenStreetMapRenderer.Mapnik:
uri = "tile.openstreetmap.org";
break;
case OpenStreetMapRenderer.Osmarenderer:
uri = "tah.openstreetmap.org/Tiles/tile";
break;
case OpenStreetMapRenderer.CycleMap:
uri = "andy.sandbox.cloudmade.com/tiles/cycle";
break;
case OpenStreetMapRenderer.NoName:
uri = "tile.cloudmade.com/fd093e52f0965d46bb1c6c6281022199/3/256";
break;
default:
break;
}
return(string.Format(UriFormat, z.ToString(), x.ToString(), y.ToString(), serverIdx.ToString(), uri));
}
protected override string CreateRequestUri(TileIndex index)
{
int z = index.Level;
int x = index.X;
int y = MapTileProvider.GetSideTilesNum(z) - 1 - index.Y;
return(String.Format(UriFormat, z, x, y));
}
public BitmapSource this[TileIndex id]
{
get
{
id = MapTileProvider.NormalizeIndex(id);
return(typeof(T).IsAssignableFrom(typeof(BitmapSource)) ? (BitmapSource)(object)GetTile(id) : null);
}
}
protected override string CreateRequestUriCore(TileIndex index)
{
var level = (int)index.Level;
var y = MapTileProvider.GetSideTilesCount(level) / 2 - index.Y - 1;
var x = MapTileProvider.GetSideTilesCount(level) / 2 + index.X;
string uri = String.Format(UriFormat, CurrentServer, x, y, level);
return(uri);
}
protected override string CreateRequestUriCore(TileIndex index)
{
int x = index.X;
int y = MapTileProvider.GetSideTilesCount(index.Level) - 1 - index.Y;
int z = (int)index.Level;
string uri = String.Format(UriFormat, x, y, z);
return(uri);
}
protected override string CreateRequestUriCore(TileIndex index)
{
int x = index.X;
int y = index.Y - MapTileProvider.GetSideTilesCount(index.Level) / 2;
int z = (int)(index.Level + 1);
string uri = String.Format(UriFormat, x, y, z, CurrentServer);
return(uri);
}
public bool TryParse(string fileName, out TileIndex index)
{
string name = fileName.Substring(0, fileName.IndexOf('.'));
int x = 0;
int y = 0;
int level = 0;
foreach (char ch in name)
{
switch (ch)
{
case '0':
break;
case '1':
x++;
break;
case '2':
y++;
break;
case '3':
x++;
y++;
break;
default:
index = new TileIndex();
return(false);
}
level++;
x *= 2;
y *= 2;
}
y = MapTileProvider.GetSideTilesCount(level) - y;
index = new TileIndex(x, y, level);
return(true);
}
public T GetTile(TileIndex id)
{
object result;
id = MapTileProvider.NormalizeIndex(id);
T img = null;
if (cache.TryGetValue(id, out result))
{
img = result as T;
if (img != null)
{
}
else
{
WeakReference reference = result as WeakReference;
if (reference != null && reference.IsAlive)
{
img = reference.Target as T;
// changing weak reference to strong
cache[id] = img;
}
}
// update access time
if (img != null)
{
accessTime = Environment.TickCount;
accessTimes[id] = accessTime;
}
else
{
Debug.WriteLine("Cache miss due to GC.");
cache.Remove(id);
accessTimes.Remove(id);
}
}
return(img);
}
public sealed override bool Contains(TileIndex id)
{
id = MapTileProvider.NormalizeIndex(id);
object img;
if (cache.TryGetValue(id, out img))
{
if (img is T)
{
return(true);
}
else
{
WeakReference reference = img as WeakReference;
return(reference.IsAlive);
}
}
return(false);
}
public override void BeginLoadImage(TileIndex id)
{
DataRect firstLevel = DataRect.Create(-1.7, -1.3, 0.8, 1.2);
double width = firstLevel.Width / MapTileProvider.GetSideTilesCount(id.Level);
double xmin = firstLevel.XMin + (id.X + MapTileProvider.GetSideTilesCount(id.Level) / 2) * width;
double height = firstLevel.Height / MapTileProvider.GetSideTilesCount(id.Level);
double ymin = firstLevel.YMin + (MapTileProvider.GetSideTilesCount(id.Level) / 2 - id.Y - 1) * height;
DataRect tileBounds = new DataRect(xmin, ymin, width, height);
if (tasks.Count == 0)
{
CreateTask(id, tileBounds);
}
else
{
tasks.Push(new TaskInfo {
ID = id, TileBounds = tileBounds
});
}
}
