Example #1
0
      public Image GetImageFromCache(GMapType type, Point pos, int zoom, string language)
      {
         Image ret = null;
         try
         {
            StringBuilder dir = new StringBuilder(tileCache);
            dir.AppendFormat("{0}{1}{2}{3}{4}{5}{6}{7}", zoom, Path.DirectorySeparatorChar, language, Path.DirectorySeparatorChar, pos.X, Path.DirectorySeparatorChar, pos.Y, Path.DirectorySeparatorChar);
            {
               dir.AppendFormat("{0}.png", type.ToString());
            }

            if(File.Exists(dir.ToString()))
            {
               FileInfo f = new FileInfo(dir.ToString());
               if(f.Length == 0)
               {
                  f.Delete();
               }
               else
               {
                  using(FileStream s = f.Open(FileMode.Open, FileAccess.Read, FileShare.Read))
                  {
                     ret = Image.FromStream(s);
                     s.Close();
                  }
               }
            }
         }
         catch
         {
            ret = null;
         }

         return ret;
      }
Example #2
0
      public void CacheImage(Image tile, GMapType type, Point pos, int zoom, string language)
      {
         try
         {
            using(tile)
            {
               StringBuilder dir = new StringBuilder(tileCache);
               dir.AppendFormat("{0}{1}{2}{3}{4}{5}{6}{7}", zoom, Path.DirectorySeparatorChar, language, Path.DirectorySeparatorChar, pos.X, Path.DirectorySeparatorChar, pos.Y, Path.DirectorySeparatorChar);

               string d = dir.ToString();

               // precrete dir
               if(!Directory.Exists(d))
               {
                  Directory.CreateDirectory(d);
               }

               // save
               {
                  dir.AppendFormat("{0}.png", type.ToString());

                  using(FileStream s = File.Open(dir.ToString(), FileMode.Create, FileAccess.Write, FileShare.None))
                  {
                     tile.Save(s, System.Drawing.Imaging.ImageFormat.Png);
                     s.Flush();
                     s.Close();
                  }

                  // remove crap
                  FileInfo f = new FileInfo(dir.ToString());
                  if(f.Length == 0)
                  {
                     File.Delete(dir.ToString());
                  }
               }
            }
         }
         catch
         {
         }
      }
Example #3
0
      /// <summary>
      /// gets image from google
      /// </summary>
      /// <param name="type"></param>
      /// <param name="lat"></param>
      /// <param name="lng"></param>
      /// <param name="zoom"></param>
      /// <param name="language"></param>
      /// <param name="cache"></param>
      /// <returns></returns>
      internal Image GetImageFrom(GMapType type, double lat, double lng, int zoom, string language, bool cache)
      {
         Point t = FromLatLngToPixel(lat, lng, zoom);
         Point pos = FromPixelToTileXY(t);

         Image ret = null;

         ret = Cache.GetImageFromCache(type, pos, zoom, language);
         if(ret != null)
         {
            return ret;
         }

         ret = GetImageFromUrl(MakeImageUrl(type, pos, zoom, language));

         if(ret != null && cache)
         {
            Cache.CacheImage(ret.Clone() as Image, type, pos, zoom, language);
         }

         return ret;
      }
Example #4
0
      /// <summary>
      /// gets image from google
      /// </summary>
      /// <param name="type"></param>
      /// <param name="pos"></param>
      /// <param name="zoom"></param>
      /// <param name="language"></param>
      /// <param name="cache"></param>
      /// <returns></returns>
      internal Image GetImageFrom(GMapType type, Point pos, int zoom, string language, bool cache)
      {
         Image ret = null;

         ret = Cache.GetImageFromCache(type, pos, zoom, language);
         if(ret != null)
         {
            return ret;
         }

         ret = GetImageFromUrl(MakeImageUrl(type, pos, zoom, language));

         if(ret != null && cache)
         {
            Cache.CacheImage(ret.Clone() as Image, type, pos, zoom, language);
         }

         return ret;
      }
Example #5
0
      /// <summary>
      /// makes url for image
      /// </summary>
      /// <param name="type"></param>
      /// <param name="pos"></param>
      /// <param name="zoom"></param>
      /// <param name="language"></param>
      /// <returns></returns>
      internal string MakeImageUrl(GMapType type, Point pos, int zoom, string language)
      {
         string server = string.Empty;
         string request = string.Empty;
         string version = string.Empty;

         switch(type)
         {
            case GMapType.Map:
            server = "mt";
            request = "mt";
            version = VersionMap;
            break;

            case GMapType.Satellite:
            server = "khm";
            request = "kh";
            version = VersionSatellite;
            break;

            case GMapType.Labels:
            server = "mt";
            request = "mt";
            version = VersionLabels;
            break;

            /*
            case GoogleMapType.SatelliteAndLabels:
            server = "mt";
            request = "mt";
            version = VersionLabels;
            return "don't work yet ;}";
            break;
            */

            case GMapType.Terrain:
            server = "mt";
            request = "mt";
            version = VersionTerrain;
            break;
         }

         int servernum = (pos.X + 2 * pos.Y) % 4;
         string sec1 = ""; // after &x=...
         string sec2 = ""; // after &zoom=...
         int seclen = ((pos.X*3) + pos.Y) % 8;
         sec2 = SecWord.Substring(0, seclen);
         if(pos.Y >= 10000 && pos.Y < 100000)
         {
            sec1 = "&s=";
         }

         return string.Format("http://{0}{1}.google.com/{2}?v={3}&hl={4}&x={5}{6}&y={7}&z={8}&s={9}", server, servernum.ToString(), request, version, language, pos.X.ToString(), sec1, pos.Y.ToString(), zoom.ToString(), sec2);
      }
Example #6
0
      /// <summary>
      /// makes url for image
      /// </summary>
      /// <param name="type"></param>
      /// <param name="lat"></param>
      /// <param name="lng"></param>
      /// <param name="zoom"></param>
      /// <param name="language"></param>
      /// <returns></returns>
      internal string MakeImageUrl(GMapType type, double lat, double lng, int zoom, string language)
      {
         Point t = FromLatLngToPixel(lat, lng, zoom);
         Point p = FromPixelToTileXY(t);

         return MakeImageUrl(type, p, zoom, language);
      }
Example #7
0
      /// <summary>
      /// get images from list and cache it
      /// </summary>
      /// <param name="list"></param>
      /// <param name="type"></param>
      /// <param name="zoom"></param>
      /// <param name="language"></param>
      /// <returns>successfully downloaded tile count</returns>
      public int PrecacheTiles(List<Point> list, GMapType type, int zoom, string language)
      {
         int countOk = 0;

         GMapControl.Shuffle<Point>(list);

         foreach(Point p in list)
         {
            Image img = GetImageFrom(type, p, zoom, language, true);
            if(img != null)
            {
               countOk++;
               System.Threading.Thread.Sleep(1000);
            }
         }

         return countOk;
      }