Mariuszowe punkty

Punkty.cs

using System;

namespace ConsoleApplication1
{
    enum PointType 
    {
        Point2D, 
        Point3D 
    }

    class Point
    {
        public int x { get; set; }
        public int y { get; set; }

        public static Point Distance(Point pointA, Point pointB)
        {
            if (pointA is Point2D && pointB is Point2D)
                return new Point2D()
                {
                    x = pointB.x - pointA.x,
                    y = pointB.y - pointA.y
                };
            else if (pointA is Point3D && pointB is Point3D)
                return new Point3D()
                {
                    x = pointB.x - pointA.x,
                    y = pointB.y - pointA.y,
                    z = (pointB as Point3D).z - (pointA as Point3D).z
                };

            return new Point();
        }
    }

    class Point2D : Point
    {
        public override string ToString()
        {
            return "2D, x=" + this.x + ", y=" + this.y;
        }

        public void Move(int x, int y)
        {
            this.x += x;
            this.y += y;
        }
    }

    class Point3D : Point
    {
        public int z { get; set; }

        public override string ToString()
        {
            return "3D, x=" + this.x + ", y=" + this.y + ", z=" + this.z;
        }

        public void Move(int x, int y, int z)
        {
            this.x += x;
            this.y += y;
            this.z += z;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            // wstep
            Point3D punkt3d = new Point3D()
            {
                x = 1,
                y = 2,
                z = 3
            };

            Console.WriteLine(punkt3d);

            Point2D punkt2d = new Point2D()
            {
                x = 1,
                y = 1
            };

            Console.WriteLine(punkt2d);

            // przesuwanie
            Console.Write("Przesuwanie: ");
            punkt2d.Move(5, 2);
            Console.WriteLine(punkt2d);

            // sprawdzanie typu
            Console.WriteLine((punkt3d is Point2D));

            // odleglosc
            Point2D p1 = new Point2D()
            {
                x = 5,
                y = 5
            };
            Point2D p2 = new Point2D()
            {
                x = 10,
                y = 10
            };

            Console.WriteLine(Point.Distance(p1, p2));

            Console.ReadKey();
        }
    }
}