unit circle

[Ian Johnson]

i used controls to expose the interesting parameters here:

http://tributary.io/s/6723094

this is something paul and I worked on a while back, but i just spruced it up a little and added the controls

--
Ian Johnson - 周彦

http://enja.org

[Geoffery Miller]

Switching this between sin/cos/tan is http://www.reactiongifs.com/wp-content/uploads/2011/09/mind_blown.gif for me