ArcStache.WebMercatorUtil.LatitudeToY C# (CSharp) Метод

        public static double LatitudeToY(double latitude)
        {
            var loc1 = latitude * RADIANS_PER_DEGREES;
            var loc2 = Math.Sin(loc1);
            return RADIUS * 0.5 * Math.Log((1 + loc2) / (1 - loc2));
        }