gistfile1.cs

        public double this[int index]
        {
            get
            {
                switch (index)
                {
                    case 0:
                        return x;
                    case 1:
                        return y;
                    case 2:
                        return z;
                    default:
                        throw new InvalidOperationException("Punkt ma tylko 3 sk³adowe !!");
                }
            }
        }