Inigio Quillez' homepage has lots of cool articles about this kind of stuff, so please check it out: http://www.iquilezles.org/www/index.htm http://www.iquilezl

Inigio Quillez' homepage has lots of cool articles about this kind of stuff, so please check it out: http://www.iquilezles.org/www/index.htm http://www.iquilezles.org/www/index.htm