#define circle_width 16
#define circle_height 16
#define circle_x_hot 8
#define circle_y_hot 7
static char circle_bits[] = {
   0xc0, 0x07, 0x30, 0x18, 0x08, 0x20, 0x04, 0x40, 0x04, 0x40, 0x02, 0x80,
   0x02, 0x80, 0x02, 0x80, 0x02, 0x80, 0x02, 0x80, 0x04, 0x40, 0x04, 0x40,
   0x08, 0x20, 0x30, 0x18, 0xc0, 0x07, 0x00, 0x00};