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Thorn Fractal v2.1

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Create randomly chosen thorn fractals see also: http://paulbourke.net/fractals/thorn/ key input: <blanc> select random thorn fractal 1..5 select predefined thorn fractal c random sinus colors r random noisy colors g gray scaled colors p toggle palette drawing i toggle information display k toggle zoom m change pixel multi sampling (time*16!!!) s save "ThornFractal#.png" +/- change escape value </blanc>
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