stripe-height ;
:: (pack-images) ( images atlas-width sort-quot -- placements )
- images sort-quot inv-sort-with [ f image-placement boa ] map :> image-placements
+ images sort-quot inv-sort-by [ f image-placement boa ] map :> image-placements
0 :> @y!
[ image-placements atlas-width @y (pack-stripe) ] [ @y + @y! ] while*
image-placements ; inline