placename.cs

功能：基于windows mobile 的地图查看器。使用vs2005开发

			lstps.ShowAtStartup = true;
			lstps.MinimumDisplayAltitude = 0;
			lstps.MaximumDisplayAltitude = 25000;
			lstps.PlacenameListFilePath = @"Data\Earth\Placenames\uscities0\ww.wpl";
			lstps.WinColorName = "Yellow";
			alTiledPlacenameSet.Add(lstps);

			//US Water Features
			lstps = new LayerSetTiledPlacenameSet();
			lstps.ShowAtStartup = true;
			lstps.MinimumDisplayAltitude = 0;
			lstps.MaximumDisplayAltitude = 20000;
			lstps.PlacenameListFilePath = @"Data\Earth\Placenames\us_water\ww.wpl";
			lstps.WinColorName = "Cyan";
			alTiledPlacenameSet.Add(lstps);

			//US Terrain Features
			lstps = new LayerSetTiledPlacenameSet();
			lstps.ShowAtStartup = true;
			lstps.MinimumDisplayAltitude = 0;
			lstps.MaximumDisplayAltitude = 20000;
			lstps.PlacenameListFilePath = @"Data\Earth\Placenames\us_terrain\ww.wpl";
			lstps.WinColorName = "Orange";
			alTiledPlacenameSet.Add(lstps);

			//US Anthropogenic Features
			lstps = new LayerSetTiledPlacenameSet();
			lstps.ShowAtStartup = true;
			lstps.MinimumDisplayAltitude = 0;
			lstps.MaximumDisplayAltitude = 10000;
			lstps.PlacenameListFilePath = @"Data\Earth\Placenames\us_anthropogenic\ww.wpl";
			lstps.WinColorName = "Yellow";
			alTiledPlacenameSet.Add(lstps);

			//GeoNET Populated Place
			lstps = new LayerSetTiledPlacenameSet();
			lstps.ShowAtStartup = false;
			lstps.MinimumDisplayAltitude = 0;
			lstps.MaximumDisplayAltitude = 100000;
			lstps.PlacenameListFilePath = @"Data\Earth\Placenames\GEONET_p_ppl\ww.wpl";
			lstps.WinColorName = "Pink";
			alTiledPlacenameSet.Add(lstps);

			//Hooters
			lstps = new LayerSetTiledPlacenameSet();
			lstps.ShowAtStartup = true;
			lstps.MinimumDisplayAltitude = 0;
			lstps.MaximumDisplayAltitude = 500000;
			lstps.PlacenameListFilePath = @"Data\Earth\Placenames\Hooters\ww.wpl";
			lstps.WinColorName = "Orange";
			alTiledPlacenameSet.Add(lstps);

			LayerSetTiledPlacenameSet[] lstpsa = new LayerSetTiledPlacenameSet[alTiledPlacenameSet.Count];
			alTiledPlacenameSet.CopyTo(lstpsa);
			ls.TiledPlacenameSet = lstpsa;
			return ls;
		}
#endregion

		public void InitializeVertex(Device device)
		{
			alPlaceLists = new List<PlaceList>();
			uint memStart = GetAvailMem();
			//GetLayerSetXs(); //about a meg?
			LayerSet ls = GetLayerSet();
			uint memXs = GetAvailMem();

			//mem
			winFont = new System.Drawing.Font("Arial", 8, FontStyle.Bold);
			drawingFont = new Microsoft.WindowsMobile.DirectX.Direct3D.Font(device, winFont);

			foreach (LayerSetTiledPlacenameSet lstps in ls.TiledPlacenameSet)
			{
				if (lstps.ShowAtStartup == false)
					continue;

				string dataPath = Settings.StorageCard + Path.GetDirectoryName(lstps.PlacenameListFilePath);
				dataPath = dataPath + @"\0000_0000.wwp";
				if (File.Exists(dataPath) == false)
					continue;

				PlaceList pl = new PlaceList();
				pl.minAlt = (float)lstps.MinimumDisplayAltitude;
				pl.maxAlt = (float)lstps.MaximumDisplayAltitude;

				switch (lstps.WinColorName)
				{
					case "Yellow":
						pl.color = Color.Yellow;
						break;
					case "White":
						pl.color = Color.White;
						break;
					case "Brown":
						pl.color = Color.Brown;
						break;
					case "Cyan":
						pl.color = Color.Cyan;
						break;
					case "Pink":
						pl.color = Color.Pink;
						break;
					case "Orange":
						pl.color = Color.Orange;
						break;
					default:
						pl.color = Color.White;
						break;
				}

				/*
				FontStyle fontStyle = FontStyle.Regular;
				if(lstps.DisplayFont.Style != null)
				{
					if(lstps.DisplayFont.Style.IsBold)
						fontStyle = FontStyle.Bold;
					if(lstps.DisplayFont.Style.IsItalic)
						fontStyle = FontStyle.Italic;
					if(lstps.DisplayFont.Style.IsBold && lstps.DisplayFont.Style.IsItalic)
						fontStyle = FontStyle.Bold | FontStyle.Italic;
				}
				else
				{
					fontStyle = FontStyle.Regular;
				}
				 */

				//pl.winFont = new System.Drawing.Font("Arial", lstps.DisplayFont.Size, fontStyle);
				//pl.drawingFont = new Microsoft.WindowsMobile.DirectX.Direct3D.Font(device, pl.winFont);

				FileInfo dataFileInfo = new FileInfo(dataPath);
				FileStream dataFileStream = dataFileInfo.OpenRead();
				BinaryReader dataFileReader = new BinaryReader(dataFileStream, System.Text.Encoding.ASCII);

				int numberPlacenames = dataFileReader.ReadInt32();
				for (int j = 0; j < numberPlacenames; j++)
				{
					Place p = new Place();
					p.name = dataFileReader.ReadString();
					p.lat = dataFileReader.ReadSingle();
					p.lon = dataFileReader.ReadSingle();
					int c = dataFileReader.ReadInt32();

					//System.Collections.Hashtable metaData = new System.Collections.Hashtable(c);
					for (int n = 0; n < c; n++)
					{
						string key = dataFileReader.ReadString();
						string keyData = dataFileReader.ReadString();
						//metaData.Add(key, keyData);
					}

					// for easier hit testing
					//float lonRanged = lon;
					//if (lonRanged < west)
					//	lonRanged += 360; // add a revolution

					//if (lat <= north && lat >= south && lonRanged <= east && lonRanged >= west)
					//{
						//WorldWindPlacename pn = new WorldWindPlacename();
						//float Lat = lat;
						//float Lon = lon;
						//string Name = name;
						//richTextBox1.AppendText(Name + "\r\n");
						//pn.metaData = metaData;
						p.point = MathEngine.SphericalToCartesian(p.lat, p.lon, Settings.Radius);
						pl.places.Add(p);
						//tempPlacenames.Add(pn);
					//}
					//dataFile.AddPlacename(name, lat, lon);

						//adjust for hit testing
						p.lat = p.lat + 90;
						p.lon = p.lon + 180;
				}
				alPlaceLists.Add(pl);

				dataFileReader.Close();
				dataFileStream.Close();
			}
		}

		public void RenderVertex(Device device, Camera camera)
		{
			float decViewRange = (float) MathEngine.RadiansToDegrees(camera.ViewRange) / 4f; //not quire 1/2
			float north = (camera.Latitude + 90) + decViewRange;
			float east = (camera.Longitude + 180) + decViewRange;
			float south = (camera.Latitude + 90) - decViewRange;
			float west = (camera.Longitude + 180) - decViewRange;
			foreach (PlaceList pl in alPlaceLists)
			{
				if (camera.Altitude > pl.minAlt && camera.Altitude < pl.maxAlt)
				{
					foreach (Place p in pl.places)
					{
						if (p.lat <= north && p.lat >= south && p.lon <= east && p.lon >= west)
						{
							Vector3 v = p.point;
							v.Project(device.Viewport, camera.Projection, camera.View, camera.World);
							//pl.drawingFont.DrawText(null, p.name, new System.Drawing.Rectangle((int)p.point.X, (int)p.point.Y, device.Viewport.Width, device.Viewport.Height), DrawTextFormat.WordBreak | DrawTextFormat.NoClip, pl.color);
							drawingFont.DrawText(null, p.name, new System.Drawing.Rectangle((int)v.X, (int)v.Y, device.Viewport.Width, device.Viewport.Height), DrawTextFormat.WordBreak | DrawTextFormat.NoClip, pl.color);
						}
					}
				}
			}
		}

		public Place[] FindPlace(string name)
		{
			name = name.ToLower();
			List<Place> alPossible = new List<Place>();
			foreach (PlaceList pl in alPlaceLists)
			{
				int index = -1;
				foreach (Place p in pl.places)
				{
					//int result = string.Compare(name, p.name, true);
					//if (result == 0)
					//{
					//	alPossible.Add(p);
					//}
					index = p.name.ToLower().IndexOf(name);
					if (index != -1)
					{
						alPossible.Add(p);
					}
				}
			}
			Place[] pa = new Place[alPossible.Count];
			alPossible.CopyTo(pa);
			return pa;
		}

		public void Dispose()
		{
			if (drawingFont != null)
			{
				drawingFont.Dispose();
				drawingFont = null;
			}
			if (alPlaceLists != null)
			{
				alPlaceLists.Clear();
				alPlaceLists = null;
			}
		}
	}
}