Esempio n. 1
0
        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);
        }
Esempio n. 2
0
        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);
        }
Esempio n. 3
0
        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();
            }
        }