public class RecursiveGraphics {

	public static void mysteryImage(double x, double y, double radius, int level) {
		if (level == 0) {
			StdDraw.filledSquare(x,  y, radius);
		} else {
			double up = x + (3*radius/4);
			double down = x - (3*radius/4);
			double right = y + (3*radius/4);
			double left = y - (3*radius/4);
			mysteryImage(x, y, radius/2, level-1);
			mysteryImage(up, right, radius/4, level-1);
			mysteryImage(up, left, radius/4, level-1);
			mysteryImage(down, right, radius/4, level-1);
			mysteryImage(down, left, radius/4, level-1);
		}
	}

	public static void main(String[] args) {
		int level = 2;
		mysteryImage(.5, .5, .5, level);
	}

}