[Opensim-users] Exporting prims from OpenSim into a popular 3D format - .OBJ, COLLADA, whatever

[Fleep Tuque]

Hi Gwyn,

I spent hours just a few weeks ago looking for exactly the same thing to no
avail.  Like you, I came across the mentions of OGRE and eventually even
found a copy of it, but with very little documentation and not enough time
to spend futzing with it, I didn't manage to get it working.

I'd also be extremely interested if anyone else has a solution, but I'm
guessing there might not be one.  If there is, my extensive google-fu
didn't turn anything else up.  :(

- Chris/Fleep

Chris M. Collins (SL/OS: Fleep Tuque)
Center for Simulations & Virtual Environments Research (UCSIM)
UCIT Instructional & Research Computing
University of Cincinnati
406A Zimmer Hall
315 College Drive
PO BOX 210088
Cincinnati, OH 45221-0088
chris.collins at uc.edu
(513) 556-3018

http://ucsim.uc.edu

On Tue, Apr 10, 2012 at 2:48 PM, Gwyneth Llewelyn <
gwyneth.llewelyn at gwynethllewelyn.net> wrote:

> Hi,
>
> After years of reading how to copy content between SL and OpenSim, as well
> as doing all kinds of content backup in all possible formats, and reading
> volumes of information on how to import sculpties and/or meshes developed
> on application X (name whatever application you wish), I couldn't find
> anything about exporting prim content from OpenSim (or Second Life, for
> that matter) to a popular 3D format that could be used by any 3D modelling
> tool.
>
> There is a reason for this. One of our projects (two OpenSim regions) was
> seen as good background for a TV production. Now the producers need those
> buildings in a standard 3D format to upload to their CGI software to do
> special effects. Since all those objects (except for one or two sculpties)
> only exist as OpenSim prims, how can I export them to, say, .OBJ, Collada,
> .DXF, or any similar 3D format?
>
> OAR/IAR are really just meaningful in the SL/OpenSim world. They're
> completely meaningless for any other 3D software, because they're so
> closely tied to the way SL/OpenSim store prim/mesh data.
>
> I found a reference back in 2010, where some people had some limited
> success using GLInterceptor with the OGLE plugin (the website for OGLE has
> been down since mid-2010, but there are still ways to get copies of it).
> The idea is the following: when the SL Viewer generates the mesh data for a
> scene, it sends OpenGL commands, which get intercepted by GLInterceptor,
> and are written on a file. OGLE apparently "recombines" those commands so
> that they are mapped to object meshes, which can be saved to any popular
> format. This allegedly works for simple objects, but I really have no idea
> — because of the possibility of content theft, all information regarding
> "success" with GLInterceptor/OGLE is really not much available.
>
> Obviously the best solution would be an OAR/IAR-to-OBJ conversion tool,
> but if such a tool exists, Google cannot find it :) I suppose it's
> something worth developing one day, but it would take far, far too much
> time. As said, the way objects are described in OAR/IAR make little sense
> outside the SL/OpenSim context. Turning them into real mesh data, in
> whatever popular format, is a highly complex operation — in effect, it
> amounts to developing a 3D renderer from scratch that works on SL/OpenSim
> data! As you all well know, almost every SL viewer out there uses the LL
> rendering engine. Radegast is one exception. Does it save objects to .OBJ?
>
> So... I know that most of you are only worried about the reverse problem
> (how to get your fantastic 3D models uploaded via mesh import into
> OpenSim), but I wonder if anyone actually had the need to do the reverse
> operation — build in OpenSim, export to .OBJ — and, if so, what tools were
> used to accomplish that feat?
>
> It would be a pity to be forced to recreate everything from scratch :-(
> Not to mention the time it takes...
>
> Thanks in advance for any input!
>
> Cheers,
>
>        - Gwyn
>
>
> --
> "I'm not building a game. I'm building a new country."
>  -- Philip "Linden" Rosedale, interview to Wired, 2004-05-08
>
>
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> Opensim-users at lists.berlios.de
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>
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