Look there
https://discourse.threejs.org/t/addon-produces-almost-infinite-many-time-varying-geometries-with-functions/262
http://sandboxthreef.threejs.hofk.de/examplesTHREEf%20r90.html
from http://sandbox.threejs.hofk.de/
See also https://github.com/hofk/THREEf.js
