The class's look really handy.
I'm working on a AR Browser and need on-the-fly generated text bubbles, so this seems appropriate.
One thing; What license do you consider this under? Though we are developing a free, open source, browser ourself (
http://arwave.org/), we want people to be able to re-use and adapt our code for their own projects, even if their commercial. So we need to know any code we use if allowed for that