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Re:Pixar's senior scientist explains how math makes the movi... by corysama on Sunday March 18, 2018 @12:41PM (#16612766)
Not only was the hair in Brave modeled with math, all of the vegetation was procedurally generated by Íñigo Quílez of http://shadertoy.com fame.

http://www.cgw.com/Publications/CGW/2012/Volume-35-Issue-4-J...

Re:Pixar's senior scientist explains how math makes the movi... by meuk on Sunday March 18, 2018 @12:45PM (#16612794)
Inigo Quilez also has an awesome site with very accessible articles: iquilezles.org (I think the articles section is the most interesting part).