Hey Casey
the problem looks like it is caused by the backfaces not being culled in
your collada obejct as it is being rendered to screen. this is controlled by
a property called bothsides in Mesh, which defaults to false but could be
being set to true by the settings in the collada file (something the
papervision collada importer may jave been ignoring)
if possible, i would check the original 3d file to see if geometry or
materials were set to render double-sided. if that isn't possible, you can
check for a tag in the collada file itself called double_sided. if you find
it, and it is set to 1 like this:
<extra>
<technique profile="GOOGLEEARTH">
<double_sided>1</double_sided>
</technique>
</extra>
reset it to 0 and try re-loading the file into lite.
for an example of how to change a material once a file once loaded, try
looking at the Basic_LoadModel demo. the file in question is a 3ds file, but
the technique laid out there is identical for the collada importer.
hth!
Rob
On Sat, Oct 10, 2009 at 1:04 AM, Casey <[email protected]> wrote:
>
> I'm hoping to make the switch from Papervision to Away3D Lite, but I'm
> having a few issues. I'd really appreciate any insight into this
> stuff!
>
> I've been working on a project in Papervision which loads Collada
> files and then swaps their textures after they have loaded. The models
> render fine in Papervision, but when I import them via the Collada
> example project for A3D-L, the mesh faces seem to compete with each
> other, causing them to disappear and reappear depending on the
> rotation of the model in relation to the camera. Here's an example
> screenshot:
>
> http://klebba.net/misc/clipping.jpg
>
> You can see the diagonal split in a material, as well as some other
> strangeness on a rounded edge at the top (this edge shouldn't even be
> visible at this angle, but the large triangle on the front-face is
> invisible or something). These meshes were exported via 3DSMax by
> someone else. Is there a setting or something that needs to be checked
> that is unique to Away3D? As I said, this model works fine in
> Papervision. We tried exporting a regular rectangle and experienced
> the same issue. A model exported from Sketchup has no issues, and the
> demo chameleon is fine too.
>
> Additionally, I'm not having any luck changing the material of the
> model (after load has completed). Is there any example code indicating
> how this is done?
>
> Thanks in advance,
>
> Casey
--
Rob Bateman
Flash Development & Consultancy
[email protected]
www.infiniteturtles.co.uk
www.away3d.com
