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Troubleshooting model
Posted: 25 December 2019 12:00 AM   [ Ignore ]  
Total Posts:  14
Joined  2019-11-04

I’ve got a third party model from Turbo Squid animated via FBX mocap and all is working as expected.

Except the left eye. I’ve looked and can’t see anything different in the setup. What are some things that could cause this? There are not tags or parenting to nulls that I can see (haha). Right eye and left rigging seem the same.

I repeated my work in two projects with clean setups and got the same result.

You can see it here: https://drive.google.com/open?id=1eOtBTj_wU4N4S8t4EaxIcR5UhWw_55Ec

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Posted: 25 December 2019 05:03 AM   [ Ignore ]   [ # 1 ]  
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Hi Stephen,

As mentioned in the other thread, the rigs are quite different. The Rig with the motion has no eye joints at all.
In this way, the eye joints are just moving along with the Rig that is connected.
The one eyeball seemed lost in my screen-capture, you can see it around the knees. Well, there are two spheres for each eye.

Typically, if the initial pose (T-pose, for example) is available, use it to reset the pose. This is usually done, by switching off the Skin, set the pose in the Weight tag, and Skin set to active again.
It was not set up correctly in the model I got. Which requires to delete the Weight, as well the Skin object. Place both Spheres tp the Joints for that specific eye and Bind both newly. Since it is only a single object with a Joint (Bn_Eye_L is used, and Be_Eye_L is not needed for the weighting), this is easily fixed as each vertex has 100% weight.

Perhaps just constrain the eyes to the Bn_Eye_L joint, (I would do the same for the right eye. You might need to set the Axis back into the middle (Mesh>Axis> Axis-Center> Reset)

Happy Holidays.

P.S.: I requested to check why I can’t sent you a PM, so far no reply. So, I can’t send you a link to a fixed model.

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Dr. Sassi V. Sassmannshausen Ph.D.
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Posted: 26 December 2019 10:37 PM   [ Ignore ]   [ # 2 ]  
Total Posts:  14
Joined  2019-11-04

Thanks for the info but I stumbled on this fix and super simple - the Left Eye Skin was set as child instead of peer in the tree. Moved it to match right and all is good.

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Posted: 26 December 2019 11:17 PM   [ Ignore ]   [ # 3 ]  
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Hi Stephen,

Yes, that works as well, if you’re fine with mixing joints and model in that way. A Constraint tag is pretty much the same while leaving the model hierarchy, as well as the rig hierarchy untouched.

Mixing rig and model might create, at one point, a conflict. But, as long as it works for you, use it, of course.
To illustrate this, I made a screen capture (#842)
https://www.amazon.com/clouddrive/share/PEUKTr7UWdLMCOdDuFqjNnaQbzT9bQ1G6Cr4TtyszVV

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
https://www.youtube.com/user/DrSassiLA/playlists

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