Ruby and DSLs

I recently got an assignment for my Analysis of Programing Languages course. Since I've been getting into Ruby I chose a topic that would allow me to delve into some of the areas that, as a Java programmer, I've been finding more mystifying. I also had a Computer Graphics assignment given out at around the same time so I combined the two. It is published using Google documents at http://docs.google.com/View?docid=ddqzx3ws_6frhjrv.