Well it will have work with the current segments if it's going to work
in the first place.
The segment can't be drawn like you would a normal segment as it doesn't translate to well in the editor.
It has to be constructed out of sections.The real problem I has constructing this is how many sections?
It's no use if you have to assemble 20 sections to have a working room
users would loose you on section 5.
Now to accommodate the current square segments are easy just by having the 90 degree vertical and 90 degree horizontal part of the room corrected with a normal wall about 2 to 4 units so in effect you don't have a real round room with sides being straight however if you add the completely round floor it will give the illusion of a round room.
So I'm looking and pressing for a 8 part sectioned room segment.
Pointless Assault video
http://w13.easy-share.com/1408971.html