Animating Ellipses on a Vintage 386 Computer

I show implementations of ellipse routines, including horizontal ellipses and diagonal/general ellipses on a vintage 386 computer, all assembly optimised for maximum performance. I talk about how scan conversion of lines, circles and ellipses actually works at a high level and talk about all the issues I ran into trying to get my final animation to work. Code repository for this episode: https://github.com/wbhart/ellipse PC-Key-Draw: https://www.pcjs.org/software/pcx86/sw/misc/pcsig/0001-0999/DISK0344/ Minsky circle algorithm: http://cabezal.com/misc/minsky-circles.html Da Silva Ellipse algorithm: https://cs.brown.edu/research/pubs/theses/masters/1989/dasilva.pdf Van Aken's algorithm: https://arxiv.org/pdf/2009.03434.pdf Kappel's algorithm is unfortunately behind a paywall.