#define lr_angle_mask_width 16
#define lr_angle_mask_height 16
static short lr_angle_mask_bits[] = {
   0x0000, 0x0000, 0x0000, 0x0000,
   0xf000, 0xf000, 0xf000, 0xf000,
   0xf000, 0xf000, 0xf000, 0xf000,
   0xfff0, 0xfff0, 0xfff0, 0xfff0};