This morning's "learn something every day" is some polar plotting. R=1+2*COS(Z), pretty neat patterns from this one #commodore #c64
https://videopress.com/v/4aM5yCmH?resizeToParent=true&cover=true&preloadContent=metadata
https://videopress.com/v/4aM5yCmH?resizeToParent=true&cover=true&preloadContent=metadata