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Koch curves / Fractal croques

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Implementation of interactive generator of koch-similar curves on a polygonal support. The resulting plots looks like beautiful croques. The implementation isn't recursive (as usual in similar algorithms) but iterative, because the first version was implemented on old Z80 machines. Press h to see available commands. See http://ecademy.agnesscott.edu/~lriddle/ifs/kcurve/kcurve.htm for math background See http://freeetiology.blogspot.it/ [IT] for history of this "vintage" implementation.
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