[Opensim-users] Support for Colladae Files

[Ai Austin]

>On 23/06/11 16:46, Fan Jun Wei wrote:
> > I understand that OpenSim has rolled out beta support for the 
> importing of Colladae (.dae) files but yet I?ve trouble
> > importing the files in using SL?s beta view Project Mesh. What 
> happens is that whenever I do successfully import the
> > colladae file into the region, it appears in the inventory but 
> upon dragging it into the world, it simply disappears and
> > does not show up in world. This region is a dedicated server 
> which I?ve purchased so I don?t think it has anything to do
> > with the limitations of being a normal OpenSim grid without beta functions.
> > Please do help and advice in this area.

>From: Justin Clark-Casey <jjustincc at googlemail.com:
>The mesh system has been changed in the latest SL viewers.  OpenSim 
>does not yet support the new approach.  Older SL
>mesh viewers should still work with the older system, I believe.

You can use LL stable release viewers 2.7.2 (just out) and the 
previous 2.7.1 fine at present too.

I have been doing quite a bit of experimentation with some very large 
and quite complex meshes.  They import to 0.7.2 dev master versions 
(those tested were around 15-Jun-2011 - as currently in use for 
example on OSGrid.

  The mesh is really too large for Second Life (which appears to have 
limitations on meshes to have less than 64K vertices.  Our model 
started off as 5 times that and is still double that after some 
simplifications.  Sample image at:

http://www.aiai.ed.ac.uk/~bat/EXPORT/3D/SC-Images-2011-06-21/2011-06-21-Supercar-03a-on-Openvue.jpg

The main thing we did find is that you have to have very good Collada 
exports from your modeller.  Its quite sensitive to that. We are 
still trying to work out what does and does not work and hope to 
produce some note son the experience as soon as we can.  Likely in 
August die to vacation.

I have found that upload of mesh with both the Model Wizard and 
Advanced Upload tool work fine in:

LL 2.7.1 (for most of my tests in last 2 weeks)
LL 2.7.2 (stable release just out and retested as working fine still)

Kirsten's Viewer S21 Build 8 RC1

but NOT for some reason in Kirsten's Viewer S21 Build 8 RC3c or RC3d 
or recent Beta viewers (like 2.7.4) perhaps because they are 
developing a new image processing model.  I note the same visual 
artefacts in these viewers when looking at the model previews, and 
then fail to upload.