private static Point LambertToGeographic(Point org, LambertZone zone, double lonMeridian, double e, double eps) { var n = zone.n(); var c = zone.c(); var xs = zone.xs(); var ys = zone.ys(); var x = org.X; var y = org.Y; var r = Math.Sqrt((x - xs) * (x - xs) + (y - ys) * (y - ys)); var gamma = Math.Atan((x - xs) / (ys - y)); var lon = lonMeridian + gamma / n; var latIso = -1 / n * Math.Log(Math.Abs(r / c)); var lat = LatitudeFromLatitudeIso(latIso, e, eps); var dest = new Point(lon, lat, 0); return(dest); }