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Trying a new algorithm - initially I thought it would be a good fast alternative to standard Perlin noise/fBm and with some adaptations it does get close, but the basic idea is the best 2D pattern generator I've ever come across - this image is using a slight modification but the basic algorithm is a well known idea here at ff.

Anyone care to hazard a guess at the algorithm ?



http://www.fractalforums.com/index.php?action=gallery;sa=view;id=9772

Will let y'all know anyway as soon as I release the formula to the UF database

My wholly uneducated guess would be...

Triplex Perlin Noise?

Rendered in 2D of course, so probably not...

Well it definitely produces aperiodic tilings - in fact a little modification could make them periodic of course
But I don't know if it's a standard way of producing such - it's actually just plain iterated 2D folding *but* applying randoms so that the folds are not at fixed positions, however they start at large offsets from the origin and reduce over iteration until they finally stay within the range +/-0.5
Oh - of course "Galaxy Test" has self-rotation added and "Pattern Test" includes fixed rotations on each iteration.