[Radiance-general] dxf2rad

[Lars O. Grobe]

Hope that this is not a secret - but there was a version for OS X that 
never had been released. So - if you manage to contact Schorsch...

I'm not sure about the export formats in recent releases of Vectorworks. 
If you can export 3ds, you can import using a variety of tools. If you 
can export IGES, you might get even better geometry when using brlcad to 
convert to e.g. obj than rad.

Good luck.

Lars.