@Anonymous
One method to acheive your desired workflow is to leverage the DWG export options with specific sub-object categories that you will have to setup. It's alot of work, so I would only recommend this if you use this workflow often and/or in a structured team environment where the modelers follow office standards.
In summary:
1. Create object sub-categories for each distinct object type
(ex. Curtain Panel type would have mullion, glass, spandrel, joint sub-objetcts;
2. Model your families with the parametric elements assigned to the respective object sub-categories
(ex. Curtain panel with glass pane on sub-category glass and perimeter gasket on joint sub-category);
3. Set the export configuration to map each sub-category to a distinct Autocad layer
(ex. mullion = A-CURT-MUL, glass = A-CURT-GLAZ, spandrel = A-CURT-SPAN, etc)
The resulting exported DWG will have the geometry assigned to each Autocad layer.
Not the best method if rendering is the final objective. I don't have experience with Rhino, but you should look at the Rhino support group for examples of importing DWG with materials.
Good luck.
- luc
