done lots of projects drawing, house plans, documenting framing for building permits, etc and used the camera plenty to get 3d rendering but not with a roof over an entire structure and then get that whole structure rendered, even if its 2 floors with dormers coming out of the roof like whole house pics in the gallery,
https://www.sweethome3d.com/gallery.jsp
the roof is a separate object like each wall? right? SH3D knows how to stitch it all together? into the complete structure camera shot?