// [HttpGet]
// [Route("tiles/{layer}/{z}/{x}/{y}.{format}")]
public IHttpActionResult Tile(int z, int x, int y, string format)
{
// var vectorlayerProvider = db.GetOrCreateLayerProvider(layer);
// using (var db = _datasources.GetDataSourceForLayer(layer))
// {
int nwX;
int nwY;
_tilesystem.TileXYToPixelXY(x, y, out nwX, out nwY);
double[] nw = new double[2] {
0, 0
};
double[] se = new double[2] {
0, 0
};
_tilesystem.PixelsToMeters(nwX, nwY, z, out nw[0], out nw[1]);
_tilesystem.PixelsToMeters(nwX + 256, nwY - 256, z, out se[0], out se[1]);
var from = ProjectionInfo.FromEpsgCode(3857);
var to = ProjectionInfo.FromEpsgCode(25832);
double[] zo = new double[] { 0 };
Reproject.ReprojectPoints(nw, null, from, to, 0, 1);
Reproject.ReprojectPoints(se, null, from, to, 0, 1);
var boundingBox = GetBoundingBox(nw[0], nw[1], se[0], se[1], 25832); //4326,25832
//"POLYGON ((549096.184052115 6091165.87690635, 549096.184052115 6090471.7759259, 549807.355168824 6090471.7759259 0, 549807.355168824 6091165.87690635 0, 549096.184052115 6091165.87690635 0))"
//549096.184052115 6091165.87690635 549807.355168824 6090471.7759259
var path = Path.Combine(_cacheDir, string.Format("{0}/{1}/{2}/{3}.{4}", _layer.LayerName, z, x, y, format));
if (File.Exists(path))
{
return(new FileResult(path, "application/json"));
}
// using (var test = db.GetLayerContext<TEntity>(layer))
// {
var resolution = _tilesystem.Resolution(z);
var arealLimit = resolution * resolution;
// var query = test.GetRegion(boundingBox).Where(t => t.Areal > arealLimit);
var query = _layer.GetRegion(boundingBox);
Console.WriteLine("Getting Tile at Resolution {0}", resolution);
var result = query.ToArray(); //.Reduce(resolution).ToArray(); ;
Directory.CreateDirectory(Path.GetDirectoryName(path));
using (FileStream fs = File.Open(Path.ChangeExtension(path, "geojson"), FileMode.Create))
using (StreamWriter sw = new StreamWriter(fs))
using (JsonWriter jw = new JsonTextWriter(sw))
{
jw.Formatting = Formatting.Indented;
JsonSerializer serializer = new JsonSerializer();
serializer.Converters.Add(new OgrEntityConverter());
serializer.Converters.Add(new DbGeographyGeoJsonConverter());
serializer.Serialize(jw, result);
}
var p = new ProcessStartInfo("cmd",
string.Format("/C topojson -p -o {0}.topojson {0}.geojson", Path.GetFileNameWithoutExtension(path)));
p.WorkingDirectory = Path.GetDirectoryName(path);
var pro = Process.Start(p);
pro.WaitForExit();
return(new FileResult(path, "application/json"));
// }
// }
}
