Rig seems good in frame 0, but goes wonky when trying to ani

General Moho topics.

Moderators: Fahim, Distinct Sun, Víctor Paredes, erey, Belgarath, slowtiger

Post Reply
Trollblood
Posts: 7
Joined: Wed Oct 25, 2017 9:20 pm

Rig seems good in frame 0, but goes wonky when trying to ani

Post by Trollblood » Wed Feb 28, 2018 4:44 pm

So I created an alien character for a spot and I rigged him to the best of my ability and everything seemed fine in frame 0. When I started to make keyframes I noticed his arm seemed to ignore or just go crazy dealing with kinematics. Checked all the parenting and even rebuilt the bone rig for the arm. Still crazy, erratic movement.
I am theorizing that there may be a layer binding issue. Can a layer be bound to two different bones though?

Rechecked the layers as well as the bones and found no issues. The right arm just seems to want to raise and the forearm wants to fold in. the hand bone doesn't seem to be affected by this.
Now wondering if the angle restraints are causing the issue.
Thoughts?
dueyftw
Posts: 1941
Joined: Thu Sep 14, 2006 10:32 am
Location: kingston NY
Contact:

Re: Rig seems good in frame 0, but goes wonky when trying to

Post by dueyftw » Sun Mar 04, 2018 11:19 pm

If can share the file, please do.

I can help more if I see what your working on.

Dale
Trollblood
Posts: 7
Joined: Wed Oct 25, 2017 9:20 pm

Re: Rig seems good in frame 0, but goes wonky when trying to

Post by Trollblood » Wed Mar 07, 2018 1:00 am

Here's the file I'm working on. The problem is only evident when I move the arm after frame 1 in the timeline.

https://www.dropbox.com/s/h9kzw3bdesame ... .moho?dl=0
jezjones29
Posts: 335
Joined: Tue Jan 31, 2006 9:43 pm
Location: Wales, UK
Contact:

Re: Rig seems good in frame 0, but goes wonky when trying to

Post by jezjones29 » Wed Mar 07, 2018 4:41 pm

To fix, take the angle constraint off the right shoulder.
User avatar
Keyframer
Posts: 15
Joined: Wed Feb 28, 2018 5:47 pm

Re: Rig seems good in frame 0, but goes wonky when trying to

Post by Keyframer » Thu Mar 08, 2018 2:04 am

Cool rig! Hope you don't mind, I downloaded it to take a look at how it was built. I'm in the learning process.
2 outta 3 dimensions ain't bad
dueyftw
Posts: 1941
Joined: Thu Sep 14, 2006 10:32 am
Location: kingston NY
Contact:

Re: Rig seems good in frame 0, but goes wonky when trying to

Post by dueyftw » Fri Mar 09, 2018 7:06 pm

Hi,

Sorry for such a late reply. I'm in NY and we had a storm that knocked out the power and internet.

I took a quick look. The rig is behaving just as you set it up. The kinematics are not working. Why I don't know right now. You can get around it by holding Alt. When I get time I will look into it some more.

I would change the forearm angle constraint to -90, 120.

I would bring the arms to the front of the character.

Dale
Trollblood
Posts: 7
Joined: Wed Oct 25, 2017 9:20 pm

Re: Rig seems good in frame 0, but goes wonky when trying to

Post by Trollblood » Fri Mar 09, 2018 10:50 pm

jezjones29 wrote:To fix, take the angle constraint off the right shoulder.
Tried that and the only difference was that the whole arm now moves around in erratic circular movements.
Trollblood
Posts: 7
Joined: Wed Oct 25, 2017 9:20 pm

Re: Rig seems good in frame 0, but goes wonky when trying to

Post by Trollblood » Fri Mar 09, 2018 10:53 pm

dueyftw wrote:Hi,

Sorry for such a late reply. I'm in NY and we had a storm that knocked out the power and internet.

I took a quick look. The rig is behaving just as you set it up. The kinematics are not working. Why I don't know right now. You can get around it by holding Alt. When I get time I will look into it some more.

I would change the forearm angle constraint to -90, 120.

I would bring the arms to the front of the character.

Dale


Doing the Holding Alt thing for now. Good idea, hadn't crossed my mind.
Tried lifting the angle constraints on the shoulder as jezjones29 suggested and the whole arm was then erratic. Ugh. :cry:
Post Reply