mrdoob/three.js — pull request #3395 by lutangar (2013-04-29 12:19:27+00:00)
Title: Planetary system animation example

Commented example of a planetary system with a bit complex hierarchy.
Demonstrating the use of 'pivots' to simplify the animation process and thus not dealing with rotations composition manually.

As seen in this issue for example [Rotating around a moving point](https://github.com/mrdoob/three.js/issues/1830).