public int getPointFromPos(Double x, Double y) {
		int point;
		if (y > HEIGHT/2) {
			// flip logic
			point = 24 - (int) (x / baseUnit);
			point += 2;

			if (point > 18) {
				point--;
			}
		} else {
			point = (int) (x / baseUnit);
			if (point > 6) {
				point --;
			}
		}
		return point;
	}