#define ll_angle_mask_width 16
#define ll_angle_mask_height 16
static short ll_angle_mask_bits[] = {
   0x0000, 0x0000, 0x0000, 0x0000,
   0x000f, 0x000f, 0x000f, 0x000f,
   0x000f, 0x000f, 0x000f, 0x000f,
   0x0fff, 0x0fff, 0x0fff, 0x0fff};