Does anyone have a good solid modern guide or pointers on making easy 3D stuff in text/CLI mode (not x-windows, etc), and hopefully using a convenient library? I'm trying to make a simple fast-booting instrumentation display.

I picked up a Pi zero and muddled my way through what I could in C/C++ from piecemeal guides, and from text boot mode managed to initiate a graphics mode and draw a spinning triangle. Think I threw darts at the board for linking libraries in the compilation.

I have no idea what I'm doing, and of course, the level of scaffolding that had to be put into a simple spinning triangle was just astounding. My prior experience was using three.js and BabylonJS, and poorly. Is there something convenient to use library-wise in text mode, or is a safer bet doing windows -> firefox -> three.js?

ImGui [0]

Immediate-mode UIs are by far the easiest for quick and dirty work. Near trivial to get stuff up on screen you can interact with.

[0] https://github.com/ocornut/imgui