I have noticed that when setting up my new delta printer in s3d with a 110mm circular build volume that S3D does not display it accurately. It shows a much larger build plate that allows slicing of objects that are too large.
This does it in the newest and older versions of S3D.
This shows settings with an object that should be too big to print.
My octoprint gcode viewer showing that it is indeed to large.
Yeah, I noticed that too. You have to figure the Cartesian square that will fit into the diameter. S3D isn't smart enough to figure the actual radius of the bed. I fought with this trying to find the right way to get the full build volume to be used, but (predictably), there was no solution. It would be nice to see this bug fixed so we delta users can actually use the whole bed. You also can't just define a square that contains your circle either or the board level wizard and the auto-arrange will throw stuff out of your actual print volume. Bummer.
<to S3D folks>
It isn't all that hard to calculate the actual edges of a circular bed as compared to a square one. Today's computers are really fast and a few trig equations are not that time consuming.
Robotics and sensors engineer
And lots of other stuff for fun.