public Texture11 GetTexture(string date, string url)
{
if (!cache.ContainsKey(date))
{
Add(date, url);
}
WmsCahceEntry result = cache[date];
if (result.Texture != null)
{
return(result.Texture);
}
Texture11 tempTexture = null;
foreach (WmsCahceEntry entry in cache.Values)
{
if ((entry.Date.CompareTo(date) > 0 && tempTexture != null))
{
return(tempTexture);
}
if (entry.Texture != null)
{
tempTexture = entry.Texture;
}
}
return(tempTexture);
}
private void Add(string date, string url)
{
WmsCahceEntry entry = new WmsCahceEntry(date, url);
cache.Add(date, entry);
entry.Requested = true;
// Do a background load on this
ThreadPool.QueueUserWorkItem(new WaitCallback(LoadTexture), entry);
}
public static void LoadTexture(object objEntry)
{
WmsCahceEntry entry = objEntry as WmsCahceEntry;
entry.Requested = true;
try
{
String dir = Properties.Settings.Default.CahceDirectory + "Data\\KmlCache\\";
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
// This is a expanded timeout version of WebClient
MyWebClient Client = new MyWebClient();
string filename = dir + ((uint)entry.URL.GetHashCode32()).ToString() + ".png";
Stream stream = null;
if (Uri.IsWellFormedUriString(entry.URL, UriKind.Absolute))
{
byte[] data = Client.DownloadData(entry.URL);
stream = new MemoryStream(data);
}
else
{
stream = File.Open(entry.URL, FileMode.Open);
}
FileStream fileStream = File.OpenWrite(filename);
byte[] buffer = new byte[32768];
while (true)
{
int read = stream.Read(buffer, 0, buffer.Length);
if (read <= 0)
{
break;
}
fileStream.Write(buffer, 0, read);
}
stream.Close();
fileStream.Close();
//todo this was loaded from the kmlicon API. Any Problems with that?
entry.Texture = Texture11.FromFile(filename);
entry.Loaded = true;
}
catch
{
entry.ErrorCount++;
// retry until sucsess or MaxError Count exceeded
if (entry.ErrorCount < MaxErrorCount)
{
entry.Requested = false;
entry.Loaded = false;
}
else
{
entry.Loaded = true;
}
}
finally
{
// mut.ReleaseMutex();
}
}
