FBXLoader: Fix incorrect joint orientation for animated FBX models exported from Maya

[mwhirls]

Description

This PR fixes a bug where the rotation for joints on some FBX models from Maya were not being read correctly by FBXLoader. These models have both a non-default Euler order and have the "Joint Orient" option set on their joints. The rotation matrix for "Joint Orient" is stored in "PreRotation" in the FBX file and FBXLoader was erroneously using the Euler order for the regular joint rotation to read it.

Example model: WonkyWalk.fbx.zip

Before the fix:

Screen.Recording.2024-09-03.at.10.16.23.AM.mov

After the fix:

Screen.Recording.2024-09-03.at.10.15.38.AM.mov

[Mugen87]

@mwhirls Since you linked #14903 I have tested the PR with the related Zombie asset ( WhiteClownSambaDancing.fbx). Unfortunately, it is still broken. So is #14903 a different issue or do I miss something?

[mwhirls]

@mwhirls Since you linked #14903 I have tested the PR with the related Zombie asset ( WhiteClownSambaDancing.fbx). Unfortunately, it is still broken. So is #14903 a different issue or do I miss something?

Ah, that must be a different issue then. I linked it because I thought it could possibly be related, but my team was testing with different models. I will remove the link here to avoid confusion.