That’s an interesting coding challenge. I think you can wire everything up as just a few (two?) strings because it’s all going to get sorted out/routed in code, so make the wiring as easy for you as possible.
How many pixels are you thinking?
How long is a side, say A to B?
I feel like I saw this sort of thing before (pattern moving up to a joint and then randomly going one way or the other) but can’t remember if it was by someone here or I saw it elsewhere. It looked really cool though. @Andrew_Tuline do you remember this sort of a display? It was in an infinity cube or dodecahedron or something.
And an alternate form of mapping where only the x,y coordinate of a pixel is put into an array.
Or you might come up with your own tricky way to route things around your layout. Like I mentioned though, however you physically lay it out and wire it shouldn’t really matter. All the trickiness will be done in code.