The author also has this video: https://dyalog.tv/APLSeeds21/?v=iC9floP7POU "Tomas takes you through the API of a 3D-engine and shows you how to connect to it from APL, enabling you to create a simple scene with graphics objects moving in real-time. He also explores some of the more advanced rendering techniques." (I haven't watched it)
And J is almost isomorphic to APL.
APL also has support for GUI apps (Windows only) using .NET, but graphics takes some additional effort: https://www.youtube.com/watch?v=iC9floP7POU
https://youtube.com/watch?v=AUEIgfj9koc
Related HN story: https://news.ycombinator.com/item?id=24434717
More pics and videos at: https://bloxl.co
My April APL compiler has a terminal graphics application as one of its demos, which you can see in this folder: https://github.com/phantomics/april/tree/master/demos/ncurse...