MetaBalls are Among Us!!

I first tried to model metaballs in OpenScad. That effort was preliminary, indicating to me that it's not an easy egg to crack.

This thing cracks the proverbial metaball egg.

I have implemented a metaball routine in Banate CAD which gives you fairly decent results in relative real-time. That is, you can setup a fairly simple network of 'balls', and generate an isosurface for them in a matter of about a second, or a few seconds if you want to go for much higher resolution, or have a netwo