A long time ago I wrote a CAD system that ran on DOS and generated G-Codes for CNC machines. One of the features is that it would show the tool's path and it c

A long time ago I wrote a CAD system that ran on DOS and generated G-Codes for CNC machines. One of the features is that it would show the tool's path and it cemented my love for trigonometry. You seem to have found something you love too - kudos for chasing it!