Looks like you improved upon the one I posted yesterday https://news.ycombinator.com/item?id=5387553 https://news.ycombinator.com/item?id=5387553 - but it works

Looks like you improved upon the one I posted yesterday https://news.ycombinator.com/item?id=5387553 https://news.ycombinator.com/item?id=5387553 - but it works much better in canvas for sure!