public static void fillScanShots()
    {
        int x, y;
        int num = 10 * 10;
        for (int j = 0; j < 3; j++)
        {
            for (int i = j; i < num; i += 3)
            {
                x = i % 10;
                y = i / 10;
                enqueue(new Point(x, y));
            }
        }
    }