package mountain;

import fractal.Fractal;
import fractal.TurtleGraphics;

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

	// a is bottom left
	// b is top point
	// c is bottom right
	public Mountain(Point a, Point b, Point c, double dev) {
		super ();
		this.a = a;
		this.b = b;
		this.c = c;
		this.dev = dev;
	}

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

	// returns the middle point between two points (where the new lines will be drawn)
	private Point getMiddlePoint(Point a, Point b, double dev) {
		return new Point ((a.getX() + b.getX()) / 2, (int) (((a.getY() + b.getY()) / 2) + RandomUtilities.randFunc(dev))); // D4
	}


	public void fractalLine(TurtleGraphics g, int order, Point a, Point b, Point c, double dev) {
		if(order == 0) { // rita ut triangel
			g.moveTo(a.getX(), a.getY());
			g.forwardTo(b.getX(), b.getY());
			g.forwardTo(c.getX(), c.getY());
			g.forwardTo(a.getX(), a.getY());

		}
		else {	// rita fractallinjer
			g.moveTo(a.getX(), a.getY());
			Point a1 = getMiddlePoint(a, b, dev);
			Point b1 = getMiddlePoint(b, c, dev);
			Point c1 = getMiddlePoint(c, a, dev);

			fractalLine(g, order -1 , a, a1, c1, dev);
			fractalLine(g, order -1 , b, a1, b1, dev);
			fractalLine(g, order -1 , c, b1, c1, dev);
			fractalLine(g, order -1 , a1, b1, c1, dev);

		}
	}

	@Override
	public void draw(TurtleGraphics g) {
		//g.moveTo(a.getX(), a.getY()); // sätter startpunkten till a
		fractalLine(g, order, a, b, c, dev);
	}

}