Why? Because I can. And because delegates are cute.

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            // Setup
            turtleBox.Reset();

            KochDelegate kochFunction = null;
            kochFunction = delegate(int angle, int step, int depth)
            {
                if (depth-- < 0) return;

                turtleBox.Turn(angle);
                kochFunction(-angle, step, depth);
                turtleBox.Move(step);
                turtleBox.Turn(-angle);
                kochFunction(angle, step, depth);
                turtleBox.Move(step);
                kochFunction(angle, step, depth);
                turtleBox.Turn(-angle);
                turtleBox.Move(step);
                kochFunction(-angle, step, depth);
                turtleBox.Turn(angle);
            };

            kochFunction(90, 4, 8);
        }
    }

    public class TurtleBox : PictureBox
    {
        private Pen pen = new Pen(Color.Black);
        private Graphics graphics;

        public void Reset()
        {
            Image = new Bitmap(Size.Width, Size.Height);
            graphics = Graphics.FromImage(Image);
            graphics.Clear(Color.White);

            graphics.ResetTransform();
            graphics.ScaleTransform(1, -1);
            graphics.TranslateTransform(0, -Size.Height + 1);
            Turn(-90);
        }

        public void Turn(float angle)
        {
            graphics.RotateTransform(angle);
        }

        public new void Move(int step)
        {
            graphics.DrawLine(pen, 0, 0, 0, step);
            graphics.TranslateTransform(0, step);
        }
    }

    delegate void KochDelegate(int angle, int step, int depth);

Tuddelum

This entry was posted on Sunday, December 27th, 2009 at 19:40 and is filed under OtAkU. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.