This is a port, update, and enhancement of an old blog I wrote about using three.js for 3D graphics. I’ll add new pages as time allows. Please enjoy.
My older programs, in the early pages of my site, won’t run under the recent version of Safari in MacOS Big Sur on notebooks. (They work fine in other browsers such as Edge, Firefox, and Chrome, and run fine in Safari on iPhones and iPads.) As a temporary fix, enable this in Safari: Develop > Experimental Features > GPU Process: WebGL.