Springing from a discussion on the openFrameworks forums, I have uploaded a small example of using an FBO as a texture for a mesh with ofFbo and ofMesh. It also shows how you can use ofTranslate() and draw multiple fbos to a single screen if you are unfamiliar with such things.
Grab it here.
I also uploaded the source to the voronoi tessellation thing I made, here.
It's cold and wet in Sydney, I'm stuck inside preparing for finals, which maybe isn't such a bad place to be for now.