Found out some additional information today that should prove helpful. I
apologize if my original information was misleading or incomplete in any
way.
"You can export 3d models from Autodesk Revit to DWG, DXF or DGN. These
models can then be rendered in 3d Studio MAX or Autodesk VIZ (or whatever
other application you prefer). To export a 3d model, you need to be in a 3d
view in Revit. The 3d representations of Revit elements are exported and
create appropriate geometry in the target file format.
This means that when you export to DWG, things like Revit Walls and Roofs
are exported as 3d polymesh entities. Components like doors, windows and
furniture are typically exported as blocks with 3d polymeshes and 3d faces
in the block definition.
If you export from a 2d view, the 2d representations of Revit elements are
exported and create appropriate 2d entities (lines, polylines, arcs, text,
blocks, etc.) in the target file format.
You can use Revit's Export Layers File to control the mapping of Revit
categories to AutoCAD layers or microstation levels. Layer names can be used
to control materials in the rendering application of your choice.
For more information, please see the whitepaper called "Using Autodesk Revit
with Autodesk VIZ" at http://revit.autodesk.com/documents.asp."
Better interoperability between future releases of VIZ, MAX and Revit is on
the wish list.
hth,
jim
