hips

Thanks for the reply but i still can't get it to work the way i want it to. If you ever used a blender rig then you know what i'm talking about. The hips move freely from the spine but you can still control most of the body like for crouching ect... When u set up Inverse Kinematics for the hips/ pelvis, what do you set as a target? do you use anything for the pole target? what chain length and any other settings do u use to make it work.

Blackdisney315 Peter didn't answered your questions about how to setup the IK in the end. Following the videos doesn't help me either. Because from my logic the hips use a complete different setup, than arms in regular. There is so much talking in this video, instead of simply demonstrating every case. And no, it doesn't work as the arm and leg setup. In no software! Would you maybe describe how you managed it to setup, If you did?

Blackdisney315 Peter didn't answered your questions about how to setup the IK in the end.

Thanks for reaching out. The IK setup was covered two comments below: https://support.soxware.com/communities/1/topics/957-hips?redirect_to_reply=2559#comment-1612

Best regards,
Peter

Unfortunately I'm not that much into blender so I'm not familiar with the specific rig that you're mentioning. Can you show me a video that demonstrates what you are trying to achieve?

If you pin the feet in UMotion, you can freely move the hips with the feet staying in place. The upper body is moving with the hips anyway (as the spine is a child of the hips).

If you want your shoulder/upperbody to stay in place while moving the hips, you would setup an IK chain from the hips to the start of the neck. Then you would activate IK pinning on the neck IK handle. That way moving the hips keeps the shoulders in place. Is that what you're trying to achieve?

Best regards,
Peter

yes. to make the upper body not inherit the rotations of the hips. so the hips rotate freely

Yes this is possible by using IK on the spine. Here is a quick guide how to set it up. Below is a screenshot that shows the names of all the spine bones of my character for reference:

1. Go to config mode and open the IK setup wizard.
   
2. Follow the instructions of the first dialog window (where you have to calibrate the forward-facing direction of your character).
   
3. Then we are going to add a custom IK chain for the spine by clicking on “Add Custom IK”. I used the following settings:(click to enlarge)
   
   What this does is it set's up an IK constraint that is controlling the bone named "Spine". Combined with IK pinning, this decouples the spine's rotation from the hips rotation (more on that later)
   
   
4. Click on Create. Go back into pose mode.
   
   
5. Under Display --> Rig Layers --> enable IK. This makes it easier to see the relevant things.
   
   
6. Whenever you now want your upper body to stay in place, select the spine’s IK handle (the wire cube) and set “FK/IK Blend” to 1 and enable “IK Pinned”.
   If you now rotate the hips bone, the upper body stays in place.
   
   (I changed bone style to "stick" to better see the hips rotation)
   
   PS: You can use the pole target (see previous picture) to rotate the bone named “Spine” in my case (i.e. the bone controlled by the IK algorithm.

I hope this get’s you started. You can also setup the IK chain in other ways depending on your exact use case. Feel free to play around with different setups. All the details about the IK constraint can be found in this video tutorial:

Please let me know in case you have any follow-up questions.

Best regards,
Peter