Fractrace.Formulas.LinearCos C# (CSharp) 메소드

        protected double LinearCos(double angle)
        {
            int angleInt = (int)(angle - 0.5);
            angleInt = angleInt / 2;
            angleInt = angleInt / 2;
            angle = angle - angleInt;
            angle = -angle;
            if (angle < -2)
                angle = 2 + angle;

            return angle + 1;
        }