package mountain;

import java.util.HashMap;

import fractal.Fractal;
import fractal.TurtleGraphics;

public class Mountain extends Fractal {
	private Point a;
	private Point b;
	private Point c;
	private double dev;

	public Mountain(Point a, Point b, Point c, double dev) {
		this.a = a;
		this.b = b;
		this.c = c;
		this.dev = dev;
	}

	@Override
	public String getTitle() {
		return "Bergsfraktal";
	}

	@Override
	public void draw(TurtleGraphics g) {
		g.penDown();
		fractalTriangle(g, order, a, b, c, dev);
	}

	HashMap<Side, Point> sidor = new HashMap<Side, Point>();

	private void fractalTriangle(TurtleGraphics g, int order, Point a, Point b, Point c, double dev) {
		g.penUp();
		g.forwardTo(c.getX(), c.getY());
		g.penDown();
		if (order == 0) {
			g.forwardTo(a.getX(), a.getY());
			g.forwardTo(b.getX(), b.getY());
			g.forwardTo(c.getX(), c.getY());
		} else {

			Point midA = getMid(a,b,dev);
			Point midB = getMid(b,c,dev);
			Point midC = getMid(c,a,dev);

			fractalTriangle(g, order-1, midA, midB, midC, dev/2);
			fractalTriangle(g, order-1, a, midA, midC, dev/2);
			fractalTriangle(g, order-1, midA, b, midB, dev/2);
			fractalTriangle(g, order-1, midC, midB, c, dev/2);
		}
	}

	private Point getMid(Point e, Point f, double dev) {
		Side sida = new Side(e, f);
		if (sidor.containsKey(sida)) {
			Point temp = sidor.get(sida);
			return temp;
		} else {
		double rand = RandomUtilities.randFunc(dev);
		Point mitt = new Point((e.getX()+f.getX())/2, (e.getY()+f.getY())/2 + (int)rand);
		sidor.put(sida, mitt);
		return mitt;
		}
	}

}