using System;

using System.Drawing;

using System.Drawing.Imaging;

using System.Collections.Generic;

using System.Linq;

namespace Assistance {

	public class Canvas {

		public readonly List<assistant> assistants = new List<assistant>();</assistant></assistant>

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

		public ActivePoint ActivePoint = null;

		public ActivePoint findPoint(Point position) {

			foreach(ActivePoint point in points.Reverse<activepoint>())</activepoint>

				if (point.isInside(position))

					return point;

			return null;

		}

		public void drawGuidlines(Graphics g, Point point) {

			foreach(Assistant assistant in assistants)

				assistant.drawGuidlines(g, point);

		}

		public void drawAssistants(Graphics g) {

			foreach(Assistant assistant in assistants)

				assistant.draw(g);

		}

		public void drawPoints(Graphics g, ActivePoint activePoint) {

			foreach(ActivePoint point in points)

				point.draw(g, activePoint == point ? ActivePoint.Mode.Active : ActivePoint.Mode.Common);

		}

		public void draw(Graphics g, ActivePoint activePoint, Point guidlinesPoint) {

			drawGuidlines(g, guidlinesPoint);

			drawAssistants(g);

			drawPoints(g, activePoint);

		}

		public void draw(Graphics g, ActivePoint activePoint) {

			drawAssistants(g);

			drawPoints(g, activePoint);

		}

	}

}