I just downloaded the most recent build, and your fix worked! Thanks so much for solving the issue, I'm really looking forward to using Blender thanks to you!

I'm really new to Blender so I hope I'm following the correct steps to grab the latest build with your fix implemented.

Thanks for reporting and helping to solve this issue by providing the extra demo files!
I believe that i have fixed the animation curve export issue. Please can you check that all is ok now and report back when it still fails?

If possible can you try to find a super simple example that demonstrates the failure in 2.78.5 but works in the 2.78 release? Then provide the blend and 2 collada files, one that works (exported from 2.78) and one that is broken (exported from 2.78.5). Then it is much easier to inspect the model and see what has gone wrong.

@Gaia Clary (gaiaclary) I bet that one is for you ;)

Fixed. Thank you.

Thanks for the report, but no bug here, python API is designed to be efficient, not to protect the developer against himself. There are billions of ways of generating a corrupted mesh from python in Blender, it's up to you to do valid things (and you can always also use Mesh.validate() method in case you do not trust your generated geometry for some reasons, e.g. when importing from other formats).

Hi, Oliver;
Thanks you for the report and the patch.
However i believe this issue has been fixed already a while back.
I just checked that specularity is treated correctly now.

This issue is a bit odd. The root object is an Empty with scale and rotation.
The armature and its children are parented to that root empty.

This has been implemented with commit 51d4743033a39a90e60cdad3dd30ffa834d999de

This has been fixed with commit 89060babbcd6099e0d53cf0164661d11a79369bd
Please can you check if it works for you now?

The Collada exporter now exports mesh geometries as <triangles> when the geometry only contains tris (or is triangulated during export).
@Johannes Horvath (John) Peterson: Thanks for reporting this issue. Please can you check if the fix works for you now?

This issue has been resolved with the commits:

This issue has been resolved with the commits:

In T50807#440574, @Gaia Clary (gaiaclary) wrote:

i must apologize for being so slow. I have fallen ill but i will resume as soon as i can.

i must apologize for being so slow. I have fallen ill but i will resume as soon as i can.

Hi,
I spent two hours to find out that this was my problem when importing blendshapes in Unity. I'm glad to see somebody already tracked out the problem and made a complete explanation of the problem :)

Well more than a week without reply. Closing due to the policy of the bug tracker.

Hi Gaia,

Right now all meshes are exported as polygons, even when triangulated. This is not a bug (as far as i can say) but i think it is more elegant to export triangulated meshes as <triangles>. So i will look at this as well :)

@Gaia Clary (gaiaclary), is that considered a bug from our side? We already have Triangulate option, not sure it's supposed to give <polylist> or <triangles> tho.. Your call here!

This sounds like a reasonable request.

@Gaia Clary (gaiaclary) can you take a look at that?

Finally, I've created my own python based Collada exporter that fixes both issues https://developer.blender.org/T51288 and https://developer.blender.org/T51259

Finally, I've created my own python based Collada exporter that fixes both issues https://developer.blender.org/T51288 and https://developer.blender.org/T51259

I decided to try to fix Collada issues myself, but didn't want to recompile C++ code. So, I made a Python based Collada exporter that fixes the issues with UV textures assigning (this one and https://developer.blender.org/T51259). My script uses pycollada module (https://github.com/pycollada/pycollada). I will publish my script after polishing it into an addon.

@Gaia Clary (gaiaclary), mind having a look? Thanks!

In T49814#415353, @Gaia Clary (gaiaclary) wrote:

Vertex Normal import is not yet added. I will look into this shortly.

Actually that was reverted

Committed fix in rB04b0a9f4b885e8e3b0b3207f3b3cda74b936df3e