Platonic Solid Vertices

I always have need for a good/better vertex to construct space frames.

This derivative thing just makes a few 'improvements' to the original design.

First of all, I've modularized the code somewhat. This doesn't make any particular improvement, but it will make it easier to see what's going on, and how to add to it in the future when more vertices are needed.

Second, being the slave to phi (1.618) that I am, I changed things like the thickness of the connector to be proportional to the