Tri Strands

First go at how I'm negotiating the three strands of the Inverted City: Forum, Vorum (vertical forum, not void!) and infill.

Most of yesterday and today has been figuring out a logic behind how these three weave, bificate, trificate together, giving control over their associations and size at any point.  I'll post some renders in a little bit to make the line drawing below a little more clear...