Transfer IK => FK - Include Spine, not working

[Eka Juan]

Transfer IK => FK - Include Spine, not working

For example:
I use the IK for spine to create a simple animation.
Then Transfer IK => FK

The FK bones of the spines have no baking and lost their bending animation.

[Alessandro Padovani]

If you use the IK spine to animate then you need to transfer IK to FK, not the other way around.

[Eka Juan]

Sorry, I meant IK => FK.
It’s not working for the spine.

[Alessandro Padovani]

MHX 1.7.4.0112

Yes I can confirm the issue.

steps:

1. import G8F and convert to MHX with spine IK
2. do some animation with spine IK
3. transfer IK to FK including the spine, the FK bones are not baked

note. On a side note, if you want to save pose presets for daz studio, then you can’t use the spine IK because the spine can’t stretch in daz studio, even if you remove limits. Indeed removing limits in daz studio is limited to rotations, unless you go deeper in the settings by hand.

[Thomas Larsson]

I’m not sure if transfer IK to FK didn’t work, but what definitely didn’t work was to transfer FK/IK to the spine bones (Transfer To Links). Indeed, all kind of snapping was corrupt because locks were imposed, especially location locks.

In the last commit the snapping tools never impose locks. This makes snapping work, but it may leave non-zero values for locked channels that cannot be removed from the viewport. Enforce Limits (at the current frame) and Enforce All Limits (at all frames of the active action) now enforce location and scale locks too, and not just rotation locks and limits as before.

[Alessandro Padovani]

Yes, FK limits can’t work with snapping as I pointed every time. Thank you for fixing it. Then as noted above, daz poses can only unlock rotations, not translations, so any fancy IK feature as “stretchy limbs“ won’t work to save pose presets. This is to consider when creating the MHX rig. Perhaps we could add a “daz poses compatible“ preset for MHX which disables the IK stretchy features.

Below it’s the settings as I would use them for daz poses.

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