Maybe take a look at
http://code.google.com/p/jinngine/source/browse/branches/geometry_rework/jinngine.examples/src/jinngine/examples/PlatonicSolidsExample.java
There, a dodecahedron is created using a convex hull. I guess onecould hard code the geometric support mapping of the dodecahedron,though it might be a bit tedious.
-mo
2011/4/25 Javier Fernández <javi...@gmail.com>: