Attached Link: http://www.cs.unc.edu/~debug/238/prog3/noises.h

I haven't seen too much real math - or even better real implementations. But check out that link.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)