Collada Export fails to re-import #50079

New Issue

Brendan · 2016-11-19T12:45:38+01:00

Brendan commented

2016-11-19 12:45:38 +01:00

Blender Version
Broken: 2.78a

Exported Collada from Blender does not match original

Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps

Open Attached blend file
Export to Collada (default)
Import into Blender

The animation is different in the blender you imported to.

On the import there appears to be a strange translation added.

blender_body.blend

**Blender Version** Broken: 2.78a Exported Collada from Blender does not match original **Exact steps for others to reproduce the error** Based on a (as simple as possible) attached .blend file with minimum amount of steps Open Attached blend file Export to Collada (default) Import into Blender The animation is different in the blender you imported to. On the import there appears to be a strange translation added. [blender_body.blend](https://archive.blender.org/developer/F403668/blender_body.blend)

Brendan commented

2016-11-19 12:45:38 +01:00

Changed status to: 'Open'

Brendan commented

2016-11-19 12:45:38 +01:00

Added subscriber: @BB_Skill

Recep Aslantas commented

2016-11-19 14:53:17 +01:00

Added subscriber: @RecepAslantas

Recep Aslantas commented

2016-11-19 14:53:17 +01:00

I think this may related to #49922 , this file includes animation but I think the key point looks same: Blender exports transforms incorrectly (some cases)

I think this may related to [#49922 ](https://developer.blender.org/T49922), this file includes animation but I think the key point looks same: Blender exports transforms incorrectly (some cases)

Gaia Clary self-assigned this 2016-11-19 22:59:25 +01:00

Brendan commented

2016-11-19 23:14:34 +01:00

I wrote a viewer in opengl and it shows the same incorrect transform on the animation.

Interestingly blender appears to have a correct or at least much more correct animation if the information in the visual scene for the armature is removed

i.e
<library_visual_scenes>
<visual_scene id="Scene" name="Scene">

4.92884e-4 -0.01384696 2.569098

TO
<library_visual_scenes>
<visual_scene id="Scene" name="Scene">

0 0 0

Gives a much better result.

I am really unclear as to why, and also not really sure how this would impact my viewer to get it to give the same results as the original but figured it was worth mentioning

I wrote a viewer in opengl and it shows the same incorrect transform on the animation. Interestingly blender appears to have a correct or at least much more correct animation if the information in the visual scene for the armature is removed i.e <library_visual_scenes> <visual_scene id="Scene" name="Scene"> <node id="Armature" name="Armature" type="NODE"> <translate sid="location">4.92884e-4 -0.01384696 2.569098</translate> TO <library_visual_scenes> <visual_scene id="Scene" name="Scene"> <node id="Armature" name="Armature" type="NODE"> <translate sid="location">0 0 0</translate> Gives a much better result. I am really unclear as to why, and also not really sure how this would impact my viewer to get it to give the same results as the original but figured it was worth mentioning

Gaia Clary commented

2017-02-02 17:55:35 +01:00

I will look into this shortly.