gangx wrote on 09/01/2017 02:53:
> I guess it can be achieved by loops around a sphere. but I don't know how
>
>
Samuel Benge made some interesting works a few years ago, for example:
http://news.povray.org/povray.binaries.images/thread/%3Cweb.4d9d10aec2af4450b86cffc90@news.povray.org%3E/
http://news.povray.org/povray.binaries.scene-files/thread/%3Cweb.526eb29aa3024430721473b50%40news.povray.org%3E/?ttop=412445&toff=50&mtop=387784&moff=10
See also this thread started by Artemia Salina:
http://news.povray.org/povray.binaries.images/thread/%3C44a74506%40news.povray.org%3E/?mtop=15
Paolo
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