The Steiner chain is a set of circles inside an outer circle, where all circles are touching their neighbor in a single point. Naturally the first version within Flash is already made by Mario Klingemann in 2002 to create some nice artwork. He also has a AS3 version in his libs.
My version is rather optimized for runtime purpose, does not create objects in runtime.
Press UP/DOWN to add/remove circles to the steiner chain.
Press RIGHT/LEFT to adjust the rotation speed.
Ensure keyboard focus (Click once in the Flash movie)