bit nosier, but...hmm... increpare.com

Ideally we’d want to pick a plane so that we have similar numbers of points on both sides, but at this point we’re more than fast enough - I just want to see if this extra little step would help. And it did, a ~25% speedup. [24/x]

But we can still slice it up like a pie, and that worked really well once I got it working. This was super fast, took ~ 15% of the time of the previous optimisation. [21/x]

So, the next speedup was to split up the egg’s vertices into eight buckets according to which sides of the XY/YZ/XZ planes space they were on: [11/x]