If you haven't tried Kubity yet, it's a VERY EASY format to view/send/display your 3d output. Just export it as a SketchUp file.
Go to https://www.kubity.com/ and import your .skp file.
It looks great, easy to maneuver, has a default shadow. For quick reference, maybe better than o2c and the SunShader.
--just wandering-