using System;

using System.Drawing;

using System.Drawing.Imaging;

using System.Collections.Generic;

namespace Assistance {

	public class Track {

		public static readonly Pen pen = new Pen(Brushes.DarkGreen, 3f);

		public static readonly Pen penPreview = new Pen(new SolidBrush(Color.FromArgb(64, Color.DarkGreen)), 1f);

		public readonly List<point> points = new List<point>();</point></point>

		public Rectangle getBounds() {

			if (points.Count == 0)

				return new Rectangle();

			Rectangle bounds = new Rectangle(points[0]);

			foreach(Point p in points)

				bounds = bounds.expand(p);

			return bounds.inflate(Math.Max(pen.Width, penPreview.Width) + 2.0);

		}

		public void draw(Graphics g, bool preview = false) {

			if (points.Count < 2)

				return;

			PointF[] ps = new PointF[points.Count];

			for(int i = 0; i < ps.Length; ++i)

				ps[i] = points[i].toFloat();

			g.DrawLines(preview ? penPreview : pen, ps);

		}

	}

}