Answered

Odd jerking motion in head

fdnbgonds 4 weeks ago updated by Peter - Soxware Developer 4 weeks ago 5

I've got a strange twitch in my character's head when I animate her.  This didn't happen before.


If I rotate the torso in any way, then adjust her neck bone so she's looking forward, she get a twitch instead of smooth movement.


Her neck bone is set to progressive quaternion.  I've tried setting it to quaternion and euler, then redoing the movements from scratch in both cases, to no effect.

It seems to move smoothly until just before the next keyframe, where it does a twitch.


I've done these types of movements many times before in uMotion and I haven't encountered this before.

UMotion Version:
1.26p03
Unity Version:
2021.1.16f1

Answer

Answer

Oh jeez, I got it.  Certain bones in the rig needed to have the same rotation mode.  The rig has different bones set to different things for some reason.

I just set it to Quaternion again on a new clip and she no longer jerks, but now she rotates her head Exorcist-style.

Switched back to Progressive.  I just tried a new clip (fresh, the old clip I'm working on was based on a duplicate of another clip).  Still no good.  My older animations are working fine.  The exported result is jerky, exactly the same as it appears in uMotion.

Answer

Oh jeez, I got it.  Certain bones in the rig needed to have the same rotation mode.  The rig has different bones set to different things for some reason.

Answered

Hi,

thank you very much for your support request.

It looks like you've already found a way to solve the issue for you. Let me know in case you need any further assistance.

Best regards,

Peter