From: Lars O. Grobe <grobe@gm...> - 2007-02-02 08:53:58
first welcome, you are not the first one wondering how to use open
source in the main field of software application in architecture, in
CAD. I am in a similar situation and want to give you some hints.
Brlcad as it is now won't be to useful is you are searching for a CAD as
used in architecture. It lacks all the ergonomics you expect when
drafting and designing, like snaps, 2d to 3d work process etc. It can be
very useful as a modeler in several cases in architecture, if you have a
fixed design and need a solid model of this, e.g. for simulation. I
currently use it happily as a file converter, as it supports both
high-level CAD and low-level mesh formats. I do not care about dwg, but
there is iges supported, which is the choice for 3d models (step is not
I doubt you can use Blender as CAD, even if there are some extensions
("blendercad") available. It lacks accuracy, or better, it is not
efficient to work very accurate in Blender. It is a bit like using
3dStudion Max as CAD. Blender is a great modeler.
There are some developments on the way for a solid 3d CAD with a user
interface suitable for design, like FreeCAD or, in concept stage,
Kreative3d. There are free 2d-CADs, and you can use them to draw plans
and than build you models on top of those plans (e.g. using Blender).
I propose you to look at:
and the following mailing lists:
I also started a small web-site project, but it lacks a bit content, and
I have to admit that there is not much in the cad area as I don't
consider most open source cads as productivity level for architecture at
Anyway, it would be possible to build a CAAD on top of brlcad, using it
as a geometry engine. Noone did so far (though I am thinking about
something like that and the Kreative3d project might just start that).
Good luck, CU Lars.