Exporters: Problems with glTF export, bone animation and scale factor

[qualmon]

Bone animation gets messed up when I used a scale factor of 100.
The animation was a simple rotation of shoulder joint just for testing.

I instead scaled my mesh+skeleton and exported to glTF with scale factor=1 and it worked better.

Some screenshots and further info can be found here:
https://forum.babylonjs.com/t/maya-babylon-maya-exporter-issues/13514

[deltakosh]

pinging @thomlucc

[JasXSL]

I'm still having this issue on version 20210607.3 max 2017. Any scale factor other than 1 causes weird strechiness.

Scale factor 1:

Scale factor 10:

Settings:

No errors in the log.

[pandaGaume]

@JasXSL Could you share a very simple repro MAX scene with us please, this give us the opportunity to spot on the issue faster. The previous issue was for maya.

[JasXSL]

Sure thing. Try this at 1 and 10 scale factor

animation_test.zip

[pandaGaume]

Published a PR for Max exporter, scale was duplicated at root level and at node level.
Regards

[pandaGaume]

Still some issue to address with the way of scale between Babylon and Gltf, expect a bit more delay for the merge.
Update : Done, PR #973