MHX rig clear constraint problem.

[bouich jules]

Hi!

I noticed a big bug, that is causing me a lot of issue.

Once i am done animating, i clear constraint, to export to my game engine.

however i noticed that once i do that the some of facial animation is broke with MHX, and specially the JAW morphs.

Please note this is the exact animation and left have the mouth closed when i cleared the constraint.

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Thank you!

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[Alessandro Padovani]

To clear the constraints and export to game you have first to transfer IK to FK, as usual.

If there’s nothing to add you can close as invalid.

[bouich jules]

Hi Alessandro,

i obviously did that, but i am speaking about the jaw bones and some facs.

Thank you

[bouich jules]

To reproduce,

Import G9 -) standard morph - MHX

Import another copy g9 same steps

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Import your animation/facs to the G9

the on the copy g9 snap fk all, bake with clear constraint and go action editor change the action to the main animation of the main G9

it will not be same.

[bouich jules]

actually even import FACS directly to a clear constraint mesh will give this bug.

[Alessandro Padovani]

FACS is mostly shapekeys, if you look at the bones you’ll see they don’t move much. To bake shapekeys you can use: daz runtime > posing > bake shapekeys.

However, if you export to games, the easy way is to export to fbx, that will bake both bones and shapekeys via the fbx exporter.

[bouich jules]

The main issue is with the constraint of the Jaw bone

[Thomas Larsson]

I tried a very simple animation, just changing the jaw open morph, and then baked with the options below. Seems to work for me.

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[bouich jules]

FACS

[bouich jules]

Hi Thomas,

Those 2 are the exact same facs, one with clearing constraint and one without.

I added the FACS that cause the issue in attachment, please clear constraint like this and import, you will notice its different.

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[Alessandro Padovani]

Again, bake action doesn’t bake shapekeys, to bake FACS you also need to bake shapekeys.

[Thomas Larsson]

Bouich, did you try to keep the daz rig with mhx? Enable Keep DAZ Rig when generating mhx. Then you can animate bones and morphs for the mhx rig as usual. When you are done, select the deform rig and Posing > Mute Control Rig. This bakes both the bone and shapekey animations.

[bouich jules]

thank you very much, its very weird, i will re-open when i figure out the exact cause.