Kevin, this is something a few people have been working on recently.
Have a look at @Jeremy_Graham website, he made this http://learndynamo.com/mod2/ and it is fantastic! You may want to tweak it to use room boundary’s instead of model lines.
See this thread also about this definiton: Module 2 - Creating Elevations - Far Clip Offset adjustment possible?
and:
Module 2 Issue - Marker Incorrect Orientation
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