Vasari and Nucleus

Vasari is freeware this year and is a version of Revit 2012 that seems to be limited to massing and some analysis.

Combined with Nucleus, which should also run in regular Revit, there are some crazy things that can be modelled.

Here is a funny shape, rendered:

Some videos about the subject:
http://www.youtube.com/watch?v=p4xY7W795FE&hd=1
http://www.youtube.com/watch?v=1numYBbDaT8&hd=1