public static double DMSToDouble(string dms)
{
string[] coordComponents = dms.Split(new char[] { '°', '\'', '.' });
double coordValue = GeoConvert.DMSToDouble(int.Parse(coordComponents[0]), int.Parse(coordComponents[1]), int.Parse(coordComponents[2]));
if (coordComponents[3].Equals("S") || coordComponents[3].Equals("W"))
{
coordValue = -coordValue;
}
return(coordValue);
}
// FromWGS84: from lon,lat gives the google tile index
// From http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
// lower and upper bounds are 85;
public static Tile FromWGS84(int zoom, double lonDeg, double latDeg)
{
Tile tile = new Tile();
if (latDeg > 85)
{
latDeg = 85;
}
if (latDeg < -85)
{
latDeg = -85;
}
var latRad = GeoConvert.Radians(latDeg);
var n = Math.Pow(2, zoom);
tile.Zoom = zoom;
tile.X = (int)Math.Floor(n * ((lonDeg + 180) / 360));
tile.Y = (int)Math.Floor(((1.0d - Math.Log(Math.Tan(latRad) + (1 / Math.Cos(latRad))) / Math.PI) / 2.0d * n));
return(tile);
}
