[Bf-committers] Blender and Collada support. Does it matter?

Matthias Fauconneau matthias.fauconneau at gmail.com
Fri Aug 19 22:14:50 CEST 2011

Assimp also has some viewers (with COLLADA support since it is
supported by the library):

It has a fancy viewer (Windows only) and a simple cross-platform GL
viewer (should be enough for animations).

PS: There is also an extensive test suite of BSD licensed models.

On 8/19/11, Knapp <magick.crow at gmail.com> wrote:
> A good starting place for finding programs that use Collada.
> https://collada.org/mediawiki/index.php/Portal:Products_directory
> I would think that testing against the Panda 3d program and Orge 3d
> might be a good start if you can't find a, "standard program".
> Also RDB would be a good contact at Panda 3d. He is almost always on
> panda irc and he is a nice guy.
> https://blueprints.launchpad.net/panda3d/+spec/native-collada-support
> On Fri, Aug 19, 2011 at 1:56 PM, Ton Roosendaal <ton at blender.org> wrote:
>> Hi,
>> In IRC devs mentioned  3dviewr.com as good collada reference. Although
>> it's not official...
>> I think it would be a cool target for Khronos to expand their
>> conformance suite with an open source (opencollada) viewer.
>> -Ton-
>> ------------------------------------------------------------------------
>> Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
>> Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The Netherlands
>> On 19 Aug, 2011, at 13:19, Campbell Barton wrote:
>>> On Fri, Aug 19, 2011 at 4:45 PM, Knapp <magick.crow at gmail.com> wrote:
>>>>> Well that was basically the whole point of my post - people are
>>>>> serious about Collada, many need it, and certainly funded dev on
>>>>> it must be possible. Was mostly a reaction to you saying that
>>>>> funding the work wouldn't work.
>>>>> So, as said, by all means talk with Khronos, but if that route is
>>>>> slow or otherwise difficult, let's not let that stop us getting
>>>>> improved code earlier.
>>>>>> Juan
>>>>> ~Toni
>>>> As a hobby user I am finding myself stuck because of Collada issues
>>>> also. I write games with Panda 3d. Blender used to have an "egg"
>>>> exporter but now it does not for the 2.5 line. Panda is switching to
>>>> the Collada importer but they are also being a bit slow about it.
>>>> Between all this I am stuck not being able to full do what I would
>>>> like to do. My current option is exporting to X format and then
>>>> converting to egg format but loosing stuff like animation.
>>>> For more info into this problem area between Blender and Panda 3d:
>>>> https://www.panda3d.org/forums/viewtopic.php?t=11087
>>>> Having a solid Blender Collada will make sure that in the future the
>>>> Blender -> Panda 3d pipeline is solid. It makes me very nervous
>>>> seeing
>>>> all the Collada complaints and also seeing Panda3d be so slow in
>>>> getting a 2.5 pipeline with Blender.
>>>> So to sum it up; hobbyist need solid Collada too.
>>>> --
>>>> Douglas E Knapp
>>> Hi - note that this mail focuses mainly on export issues.
>>> For some reason neither GSOC projects we had so far have had exporting
>>> a skinned mesh (animated character run-cycle for example), as a
>>> priority.
>>> Apparently this works at some level but take a typical run-cycle (with
>>> IK and constraints) blender and export to collada, and its a no go -
>>> scrambled vertices's when I tested once a while ago, but I've heard
>>> Maya's support is also not good so, it could have been a bug there.
>>> To me this would be one of the first things to attempt to get working
>>> after basic camera, lamp, mesh support - for export at least.
>>> For FBX Its something I tested early on and had users help out making
>>> sure it worked correctly in different applications.
>>> See:
>>> http://wiki.blender.org/index.php/Extensions:2.4/Py/Scripts/Export/FBX
>>> So far I haven't spend much time with Collada but the few times I have
>>> tried to troubleshoot bugs in blender support  I couldn't even find a
>>> good program to view the models in - and I think this is part of the
>>> problem for development - perhaps there is one and I just didn't come
>>> across it - collada web viewer didn't run on my system, there was some
>>> other download-able viewer that was quite old IIRC.
>>> - For FBX there is a demo of MotionBuilder which is a good reference
>>> since they invented the format, Unity3D good for testing too.
>>> - For X3D I use view3dscene, h3d, freewrl sometimes whiteDune.
>>> But for Collada I didn't manage to find a viewer that is a defacto
>>> standard for testing and properly supporting most collada's features
>>> properly.
>>> This is really important IMHO because one can spend hours (or days),
>>> troubleshooting various combinations or
>>> animation/object/armature/deformation/scaled
>>> objects/non-uniform-scales's/parenting.. etc - so if its the viewer at
>>> fault - or its not accepted as being a correct implementation, theres
>>> not much motivation to painstakingly go over the code to ensure the
>>> files load properly in an external app.
>>> --
>>> - Campbell
> --
> Douglas E Knapp
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