private Uri GetLatLonBoundingBoxUri(int x, int y, int zoomLevel)
{
var tileSize = 360d / (1 << zoomLevel); // tile width in degrees
var west = x * tileSize - 180d;
var east = (x + 1) * tileSize - 180d;
var south = MercatorTransform.YToLatitude(180d - (y + 1) * tileSize);
var north = MercatorTransform.YToLatitude(180d - y * tileSize);
return(new Uri(uriFormat
.Replace("{w}", west.ToString(CultureInfo.InvariantCulture))
.Replace("{s}", south.ToString(CultureInfo.InvariantCulture))
.Replace("{e}", east.ToString(CultureInfo.InvariantCulture))
.Replace("{n}", north.ToString(CultureInfo.InvariantCulture))
.Replace("{X}", TileSize.ToString())
.Replace("{Y}", TileSize.ToString())));
}
private Uri GetLatLonBoundingBoxUri(int x, int y, int zoomLevel)
{
var t = new MercatorTransform();
var n = (double)(1 << zoomLevel);
var x1 = (double)x * 360d / n - 180d;
var x2 = (double)(x + 1) * 360d / n - 180d;
var y1 = 180d - (double)(y + 1) * 360d / n;
var y2 = 180d - (double)y * 360d / n;
var p1 = t.Transform(new Point(x1, y1));
var p2 = t.Transform(new Point(x2, y2));
return(new Uri(UriFormat.
Replace("{w}", p1.Longitude.ToString(CultureInfo.InvariantCulture)).
Replace("{s}", p1.Latitude.ToString(CultureInfo.InvariantCulture)).
Replace("{e}", p2.Longitude.ToString(CultureInfo.InvariantCulture)).
Replace("{n}", p2.Latitude.ToString(CultureInfo.InvariantCulture))));
}
private Uri GetLatLonBoundingBoxUri(int x, int y, int zoomLevel)
{
var t = new MercatorTransform();
var n = (double)(1 << zoomLevel);
var x1 = (double)x * 360d / n - 180d;
var x2 = (double)(x + 1) * 360d / n - 180d;
var y1 = 180d - (double)(y + 1) * 360d / n;
var y2 = 180d - (double)y * 360d / n;
var p1 = t.Transform(new Point(x1, y1));
var p2 = t.Transform(new Point(x2, y2));
return new Uri(uriFormat.
Replace("{w}", p1.Longitude.ToString(CultureInfo.InvariantCulture)).
Replace("{s}", p1.Latitude.ToString(CultureInfo.InvariantCulture)).
Replace("{e}", p2.Longitude.ToString(CultureInfo.InvariantCulture)).
Replace("{n}", p2.Latitude.ToString(CultureInfo.InvariantCulture)));
}
