Zijie(Jay) Wang
zwang688@wisc.edu
Sharingan (写輪眼) is a speicial and powerful eye in the anime Naruto.
The black rotating component is called magatama, and the sharingan with three magatamas is the strongest.
To draw the magatama, I used three circle masks, instead of bezier curve which is very hard to compute.
In anime, sharingan looks like below (and the magatama does rotate in combats).