I had a boring weekend recently and was playing around with armagetron maps..
I made a map generator that converts parametric curves into walls, and a wrapper that simplifies this by making the wall-curves an XML tag of sorts..
It comes with circles, a sine wave, a cool equation that makes a sort of arrowhead shape, and also allows for a Z component which controls wall height - I did a cool spiral that gets taller as it approaches the center.
It's very beta, and not meant to be super awesome software, but it will totally make some cool shapes without all the hastle..
It's perl, so you'll need to know a little perl to really get anything out of it.
If I had more time I'd polish it up and make it user friendly, but what can ya do

if anyone's interested let me know.
attached is a double spiral fortress map, it's pretty large but you can speed up with braking to see the whole map.
-H2NNH2