#define rotate_width 16
#define rotate_height 16
static unsigned char rotate_bits[] = {
   0x00, 0x00, 0xc0, 0x01, 0x30, 0x06, 0x08, 0x08, 0x04, 0x10, 0x04, 0x10,
   0x02, 0x20, 0x02, 0xa8, 0x02, 0x70, 0x02, 0x20, 0x04, 0x00, 0x04, 0x00,
   0x08, 0x00, 0x30, 0x00, 0xc0, 0x00, 0x00, 0x00 };