Scott and all
I have been in communication with Chris Kellern about his excellent software–it is more aimed at Arborists, I believe and there are a couple of issues make it not ideal for the typical LA workflow. It is a standalone program, exclusively in metric and more concerned with predicting light levels under trees than the shadow area. It could be use, but you would have to do the output to PDF then via Illustrator to a DWG, which puts you in the same place as Sketchup.
Maybe we could convince LandFX or EaglePoint to incorporate something? LandFX has a direct to /from sketchup link, that sounds promising. Our office uses LandFx occasionally but we have not explored this possibility.
I’m also seeing posts online that ACAD cannot render shadows in plan view!!
