public TileDescription NextTile()
{
TileDescription result = null;
lock (m_tiles) {
if (m_tiles.MoveNext())
{
result = m_tiles.Current;
}
else
{
result = null;
}
}
return(result);
}
public static void Execute(object threadData)
{
UTFGridGeneratorConfig config = threadData as UTFGridGeneratorConfig;
try {
config.WorkerStart();
IMap map = null;
try {
IMapDocument mapDocument = new MapDocumentClass();
mapDocument.Open(config.MapPath, null);
map = mapDocument.ActiveView as IMap;
if (map == null)
{
map = mapDocument.get_Map(0);
}
mapDocument.Close();
} catch (Exception) { }
if (map == null)
{
throw new Exception("Unable to open map at " + config.MapPath);
}
if ((map.SpatialReference.FactoryCode != 102113) &&
(map.SpatialReference.FactoryCode != 102100) &&
(map.SpatialReference.FactoryCode != 3785))
{
throw new Exception("Spatial reference of map must be Web Mercator (is " + map.SpatialReference.FactoryCode + ")");
}
while (true)
{
TileDescription tile = config.NextTile();
if (tile == null)
{
return;
}
string folder = String.Format("{0}\\{1}\\{2}", config.Destination, tile.Level, tile.Col);
if (!Directory.Exists(folder))
{
Directory.CreateDirectory(folder);
}
string file = String.Format("{0}\\{1}.grid.json", folder, tile.Row);
if (config.GZip)
{
file += ".gz";
}
if ((!File.Exists(file)) || config.Overwrite)
{
if (config.Verbose)
{
Console.WriteLine(Thread.CurrentThread.Name + " generating tile " + tile.Level + ", " + tile.Row + ", " + tile.Col);
}
Dictionary <string, object> data = CollectData(map, tile.Extent, config.Fields);
if (data != null)
{
if (config.Verbose)
{
Console.WriteLine(Thread.CurrentThread.Name + " saving to " + file);
}
Stream fOut = new System.IO.FileStream(file, FileMode.Create);
if (config.GZip)
{
fOut = new GZipStream(fOut, CompressionMode.Compress, CompressionLevel.BestCompression);
}
using (fOut) {
string json = JsonConvert.SerializeObject(data, Formatting.Indented);
Encoding utf8 = new UTF8Encoding(false, true);
byte[] encodedJson = utf8.GetBytes(json);
fOut.Write(encodedJson, 0, encodedJson.Length);
}
}
}
}
} finally {
config.WorkerEnd();
}
}
