OMFG it works!!!

So I managed to get the edge rotation on a single grid cell to work:


And because it wraps all the edge rotations across the grid boundary, it tessellates perfectly!


Woop woop!   (...but sorry for the rather large gifs)

There is still an issue with the relaxation system 'flipping' triangles over sometimes (one point getting pushed across the opposite edge), but for now I'm going to bask in my success and think about how best to incorporate the ridge-elevation model into this...

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