3D Labyrinth generator

I wrote processing sketches to generate labyrinths ( http://www.local-guru.net/blog/2011/04/23/generating-labyrinths-in-processing )

or hexagonal labyrinths ( http://www.local-guru.net/blog/2011/04/26/hexagonal-labyrinths-in-processing ) some days ago.

Then I modified my sketch a bit to generate a 3D version of the labyrinth and export it as a stl-File ( http://www.local-guru.net/blog/2011/04/29/printed-hexagonal-labyrinth )