[Radiance-general] Acad2004 Exporters?

[Jack de Valpine]

Hi Rob,

To elaborate on Polytrans a bit. A problem with the dwg import is that 
it is based on OpenDWG, which is perfectly fine for non-solid entities. 
However ACIS is proprietary, so the reverse engineering in the dwg 
import option is far from perfect in my trials. I have corresponded with 
Robert Landsdale at Okino, he is of the mind that the "right" way to do 
conversion of solid geometry is by exporting ACIS data from Autocad and 
then importing with one of their special modules (additional cost), one 
of which is reverse engineered and the other uses a fully licensed ACIS 
library. I have no clue though whether surface geometry would get 
exported via the acis option in Autocad. And further I do not have a 
sense for what resulting geometry grouping/organization would be. I know 
that we depend on Autocad layering as a material/organizational strategy.

Some additional food for thought. The folks who sell OBJ Export have a 
whole slew of cad geometry import export tools. They are based out of 
India and I believe are quite able to develop custom applications if 
needed....

-Jack

Rob Guglielmetti wrote:
> Jack de Valpine wrote:
>
> Hi Jack, Hi List:
> My name is Rob, and I'm an AutoCAD User.  (Hi Rob!)
>
> Jack, you posted some good info there, glad to hear Polytrans is 
> working (sort of) for you.  I'm looking for a DWG --> OBJ translator 
> myself, as I'm building an object library here and would like to start 
> using the mesh primitive for more drapey surfaces like sofa cushions 
> and the like.
> I've been using AutoCAD for 13 years now, and I love it, but I hate 
> the forced upgrades and the extra translation hoops we have to go 
> through, especially as the smaller developers cannot keep up with the 
> changes.  Rayfront is in this unfortunate situation now.  We still 
> have a couple of licenses for ACAD2000 (the most recent version that 
> Rayfront and radout work with), but the daylighting team has grown in 
> size here and so now we are forced to compete for licenses as we try 
> to get our models into Rayfront.  Maybe we'll look at some of the 
> programs you've mentioned as alternatives.  Thanks, Jack!
>
> - Rob
>
>
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