see also: donut.c which renders a 3d spinning torus in ascii. https://www.a1k0n.net/2006/09/15/obfuscated-c-donut.html https://www.a1k0n.net/2006/09/15/obfusc

see also: donut.c which renders a 3d spinning torus in ascii. https://www.a1k0n.net/2006/09/15/obfuscated-c-donut.html https://www.a1k0n.net/2006/09/15/obfuscated-c-donut.html explanation with animations: https://www.a1k0n.net/2011/07/20/donut-math.html https://www.a1k0n.net/2011/07/20/donut-math.html