Telepathy? If have been thinking about _exactly_ this for some time, but did not code it up because my home-grown software does not really make it easy... Extra points if you do that gif-ery for the curve http://jjj.de/tmp-ryde/t-shirt-R13-15-hires-cropped.png (L-system at bottom, turns are by 120 degrees). Total curve should be light gray, and the moving part should be 1/13 of the total (so the same shape will appear 13 times, as indicated in the image). ... plus you get a T-shirt! (If you use the image to, well, print one. I got one and it looks quite OK). Best, jj * Bill Gosper <billgosper@gmail.com> [Aug 31. 2014 11:27]:

The Dragon *function* (not curve, dammit) continuously mapping [0,1] into the box[-1/3-i/3, 7/6+2i/3] with the image of a circulating interval of length 1/10 highlighted, pausing at various multiples of 1/10 to show anatomical measurements. gosper.org/dragondrift.gif --rwg _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun