#define right_mask_width 16
#define right_mask_height 16
static char right_mask_bits[] = {
   0x00, 0x01, 0x00, 0x03, 0x00, 0x07, 0x00, 0x0f, 0x00, 0x1f, 0xfc, 0x3f,
   0xfc, 0x7f, 0xfc, 0xff, 0xfc, 0x7f, 0xfc, 0x3f, 0x00, 0x1f, 0x00, 0x0f,
   0x00, 0x07, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00};