Re: Not that hard actually.
It's hard to imagine the enormous leap that was Windows 3.1
Unless of course you were an IRIS/AIX, X11/Motif user.
Amiga came before that. Graphical calculations line by line while the video was displayed - very clever. Never touched a Mac AFAIR. In 1986 my boss gave me a Torch XXX System V with TopDraw graphics - list price £ 7674 - to play with ....