Grasshopper Voronoi Skeleton with habitable surfaces

Hey guys! I'm doing a project right in which I will make use of a voronoi skeleton structure. In the picture you can check that the gray block are, let's say, the boundaries of the voronoi structure. I can make it easily by placing random points, but the results are not satisfactory once there are none habitable plans. I mean, there is no plane surface.

You can check this link and have an idea of what I am talking about.

http://archreview.blogspot.nl/2011/09/cellular-vertical-village-d3-...

Is there anyone who could help me on positioning the points in right position in order to get habitable surfaces?

I would really appreciate that.