let k = (w as usize * *i) / (*n - 1);
                for j in 0..w as usize {

                let wb = (w as usize).min(50);
                let k = (wb as usize * *i) / (*n - 1);
                for j in 0..wb as usize {

                let mut nw = npost - 6;

                let mut nw = w - wb + npost - 6;