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Motion clip pivot question
Posted: 25 January 2020 09:37 PM   [ Ignore ]  
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Joined  2012-01-05

Hello
I have a question about Motion Clip pivots. 
I have two animated characters I downloaded from Mixamo.  The first one walks over 42 frames.  The second one is idle.  I create a motion clip for each one, combine them on the same layer, and add a pivot at the location where the first one should transition to the second one.  No matter how I proceed, the first one always snaps back to the 0/0/0.

See scene here.
https://www.dropbox.com/s/huf449ogt2p72rs/WalkToIdle.c4d?dl=0

Thanks for any advice!

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Posted: 25 January 2020 11:17 PM   [ Ignore ]   [ # 1 ]  
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Hi Alex,

Thanks for the file.

Please have a look at the pivot point positions in the file below.
https://www.amazon.com/clouddrive/share/aXZJHxgBJO0XThcOb0NmGkL0qqX6trL2SZvhA6ikEbu

To make the point more precise, I added a walk cycle after the idle clip. However, something is off (as the ghosts don’t match). I wouldn’t continue with this, at all. As you move the joints and the mesh.

Before you create the clips, place each joint rig under a Null Object, the Null being at the feet, and at zero position. Do not (!) include the mesh, nor the Skin object into the Motion Clip.

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
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Posted: 26 January 2020 02:30 AM   [ Ignore ]   [ # 2 ]  
Total Posts:  434
Joined  2012-01-05

Got it, thanks Sassi!  Super helpful as always!

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Posted: 26 January 2020 02:46 AM   [ Ignore ]   [ # 3 ]  
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Alex,

Thank you very much for your reply. Since the joints take over, it is not apparent that the information doubles for the mesh.

Let me know if there is anything else, I have visited Mixamo, and I think I got the correct two files. (In case that there is perhaps a follow-up question).

Anyway, my best wishes for the project.

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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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Posted: 26 January 2020 07:19 AM   [ Ignore ]   [ # 4 ]  
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P.S.: I was interested in how to fix those, in case the original animation has changed or is lost. Perhaps someone turned the Axis of the joints to Y instead of Z, etc.

I wrote each animation back to the rig (or a copy of the rig).
This allowed me to set the Null object (parent) to zero, and to set the animation in a way that the feet were on the ground. (Selecting all P.Y keys and moved them at once).

This fixed as well the Ghost representation later on in the Animation clip. When all seemed to be okay, I created new animation clips.
The alignment with the Pivot object is now predictable based on the Ghosts-Drawings. This was not possible with the received setup.

Screen capture and project file
https://www.amazon.com/clouddrive/share/WLODLSvSWHFvEv6qPoDwranl7O1W2hWxgykLZ0hnPQS

Cheers

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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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