Azmyth.Numbers.fade C# (CSharp) Method

        public static double fade(double t)
        {
            // Fade function as defined by Ken Perlin.  This eases coordinate values
            // so that they will ease towards integral values.  This ends up smoothing
            // the final output.
            return t * t * t * (t * (t * 6 - 15) + 10);         // 6t^5 - 15t^4 + 10t^3
        }