Here's the Bresenham algorithm for drawing circles using a few macros. My current style is to keep line width to 41 characters and lay out two columns of functions.

Caveats:

• No nested backquotes yet.
• I can't draw circles too far down the screen due to a strange error.
• In general, error messages have been a mess ever since I stopped relying on Linux. A heavy exercise in humility.

Main project page: https://github.com/akkartik/mu

This post is part of my Freewheeling Apps Devlog.

Comments gratefully appreciated. Please send them to me by any method of your choice and I'll include them here.