Collada import Animation : Bone animations are not imported correctly #69772

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Trevor H · 2019-09-12T04:45:15+02:00

Trevor H commented

2019-09-12 04:45:15 +02:00

System Information
Operating system: Windows 10
Graphics card: Intel

Blender Version
2.80

Short description of error

Exact steps for others to reproduce the error
When I import a Collada.dae file from Poser 10 with animation, the legs look fine, but I get zombie arms! They are in a fixed outward position. The imported Collada.dae file used to work in a previous version of Blender, cannot remember which one. I reported a Collada.dae bug a while back, when the arms were flapping on import, now they are in a fixed position.

Also Blender 2.80 crashes when exporting a Collada.dae file with animation.

Walk.dae

**System Information** Operating system: Windows 10 Graphics card: Intel **Blender Version** 2.80 **Short description of error** **Exact steps for others to reproduce the error** When I import a Collada.dae file from Poser 10 with animation, the legs look fine, but I get zombie arms! They are in a fixed outward position. The imported Collada.dae file used to work in a previous version of Blender, cannot remember which one. I reported a Collada.dae bug a while back, when the arms were flapping on import, now they are in a fixed position. Also Blender 2.80 crashes when exporting a Collada.dae file with animation. [Walk.dae](https://archive.blender.org/developer/F7737751/Walk.dae)

Trevor H commented

2019-09-12 04:45:15 +02:00

Added subscriber: @TH-10

Philipp Oeser commented

2019-09-12 10:08:42 +02:00

Added subscribers: @GaiaClary, @lichtwerk

Philipp Oeser commented

2019-09-12 10:08:42 +02:00

CC @GaiaClary

Gaia Clary commented

2019-11-26 19:42:41 +01:00

@TH-10 Could you please try to make a simpler animation that shows the same issue ? this list might help:

animate only one side of the model.
do not export the scale animation (it is not used anyways)
skip all bone animations below the forarm bones
skip the leg animation.
make a smaller animation of just a few frames

The smaller you can make the demo dae the better. It is not easy to debug this sort of problems and less complex files help a lot :)

As an additional note: I think the bone where things really go wrong is "Right Shoulder" and "Right Collar" (and the corresponding bones on the left side as well of course). It looks like there is a 90 degree extra rotation that we miss during import.

@TH-10 Could you please try to make a simpler animation that shows the same issue ? this list might help: - animate only one side of the model. - do not export the scale animation (it is not used anyways) - skip all bone animations below the forarm bones - skip the leg animation. - make a smaller animation of just a few frames The smaller you can make the demo dae the better. It is not easy to debug this sort of problems and less complex files help a lot :) As an additional note: I think the bone where things really go wrong is "Right Shoulder" and "Right Collar" (and the corresponding bones on the left side as well of course). It looks like there is a 90 degree extra rotation that we miss during import.

Trevor H commented

2019-11-27 00:51:27 +01:00

@GaiaClary . I will try and make a simpler animation hopefully showing your suggestions a.s.a.p. I am using Poser 10 and the built-in 'Walk Designer' to create walk cycles. I could use another model prop like the 'mannequin' which I think has less bones. I use the Poser 10 Collada presets for exports. I think there is an option to turn off the scale animation.

I did download the game engine GODOT, after hearing about it here on Blender. I successfully imported the Walk.dae into GODOT without any modifications and it plays back as expected.

@GaiaClary . I will try and make a simpler animation hopefully showing your suggestions a.s.a.p. I am using Poser 10 and the built-in 'Walk Designer' to create walk cycles. I could use another model prop like the 'mannequin' which I think has less bones. I use the Poser 10 Collada presets for exports. I think there is an option to turn off the scale animation. I did download the game engine GODOT, after hearing about it here on Blender. I successfully imported the Walk.dae into GODOT without any modifications and it plays back as expected.

Trevor H commented

2019-11-27 02:22:28 +01:00

Mannequin.dae

Mannequin_OneSide_5_frames.dae

{F8170609}@GaiaClary . Here is an updated walk cycle using the Mannequin model. Hope these will do! Not much options in turning off the scale animations. It's either 100% or use one of the scale units. If I use fewer animation frames the cycle will not loop full cycle, I have included one with about 5 frames.

[Mannequin.dae](https://archive.blender.org/developer/F8170607/Mannequin.dae) [Mannequin_OneSide_5_frames.dae](https://archive.blender.org/developer/F8170608/Mannequin_OneSide_5_frames.dae) {[F8170609](https://archive.blender.org/developer/F8170609/Mannequin_OneSide_Animation.dae)}@GaiaClary . Here is an updated walk cycle using the Mannequin model. Hope these will do! Not much options in turning off the scale animations. It's either 100% or use one of the scale units. If I use fewer animation frames the cycle will not loop full cycle, I have included one with about 5 frames.

blender-admin commented

2019-11-27 11:18:10 +01:00

This issue was referenced by 0281411b48

This issue was referenced by 0281411b482e718922fe446f03caca8c7fadb9a9

Gaia Clary commented

2019-11-27 11:19:14 +01:00

Changed status from 'Open' to: 'Resolved'

Gaia Clary closed this issue

2019-11-27 11:19:14 +01:00

Gaia Clary self-assigned this 2019-11-27 11:19:14 +01:00

Gaia Clary changed title from ~~Collada import / Export Animation : Arms are in a fixed position : Crashing on Export~~ to Collada import Animation : Bone animations are not imported correctly

2019-11-27 11:31:27 +01:00

Gaia Clary commented

2019-11-27 11:31:57 +01:00

@TH-10 Thanks for the additional collada files!

I believe i found the cause of the wrong rotations. However there is a flaw in the importer: When you enable the "auto connect" feature or the "find bone chains" feature then the bone roll is modified. This affects animations of course. So when you import a collada file that contains animations then those features may not be used for now.

Regarding the Blender crashes on exporting Animations: Please can you create a new report for this and provide a demo blend file that shows the issue?

Closing as resolved.

@TH-10 Thanks for the additional collada files! I believe i found the cause of the wrong rotations. However there is a flaw in the importer: When you enable the "auto connect" feature or the "find bone chains" feature then the bone roll is modified. This affects animations of course. So when you import a collada file that contains animations then those features may not be used for now. Regarding the Blender crashes on exporting Animations: Please can you create a new report for this and provide a demo blend file that shows the issue? Closing as resolved.

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Collada import Animation : Bone animations are not imported correctly #69772