Bones not displayed as following IK handle in viewport

[Anonymous]

Hello everyone, first time posting anything but after some rigorous searching and trial-and-error I have yet to solve this problem so I thought it was worth a shot to ask here!

Basically what happens is that my bone hierarchy is not updated properly in the viewport when connected to an IK handle. If I key it and scroll the time slider it works, but not when I am moving in realtime.

When I move the IK handle it displays the bones following it correctly, but when I move a bone which is above the IK handle-bones then the bones just follow statically as they are, it isn't until I update the viewport in one way or another that they snap back and shows the actual position.

I built a simple case as you can see, consisting of 4 joints: root, hip, knee and foot. First image is with no movement, in the second picture I have moved the root joint down slightly. As you can see the IK handle hasn't been moved and yet the leg doesn't follow it. In the third picture you can see how it ACTUALLY looks after I have updated the view by moving the IK handle just so slightly.

Picture 1

Picture 2

Picture 3

I have been checking different Maya settings, restarting Maya, restarting computer and updating graphics drivers, to no avail. Any ideas?

[tdHendrix]

I've heard of people having this kind of problem before. What version of Maya are you using? Can you attach a Maya scene where it's not working for you? I'll try it out with my Maya to see if it's broken for me too.

[Anonymous]

Hey, thanks for the help.

I am using Maya 2016 with all the latest updates. Nvidia GTX 1060 graphics card if that might be relevant.

I attached a Maya scene where it happens, very rudimentary with 4 joints and an IK handle.

[tdHendrix]

It's working for me so it's not any settings in the scene. I'm not sure why it's not updating properly for you. The only thing I can think of to try is to rename your userPrefs.mel to keep a backup of it and reopen Maya so it creates a new userPrefs. That way we can rule out it's not a Maya setting or something.

userPrefs are in this directory:

C:\Users\yourUserName\Documents\maya\2016\prefs

[Anonymous]

I suspected as much, but good suggestion with the userPrefs. I didn't think it would affect anything, but it did actually behave differently with the default userPrefs.

With default userPrefs the IK handle first follows the whole hierarchy unless it is keyed, as soon as I key it the IK handle stays put and it behaves normally except for the "evaluation skeleton" (I don't know if there's a name for that to be honest, the skeleton and line that goes though the bones connected via the IK handle), which goes a little bit everywhere when I move the IK handle, but the general display works.

I guess half-solved? 😛

[Anonymous]

Hello!!

Honestly, this has happened to me once, only in Maya 2016 and after a few hours of freaking out I found what it was, hopefully its the same situation for you.


Go to the Maya preferences on the top left, now look for "Animation", now on the top it says "Evaluation", change that mode to "DG" and click save, close out of Maya to be 100% sure it went thru, open up the file again and it should work out this time!

I have a huge feeling thats exactly what it is! (:


Hope that helps out a bit!!! (:

Lastly, if you are fairly new to rigging, I do have a 14 hour long course for all the basics in rigging for Maya. The link will be down below, just in case you feel you can benefit from it and you can see yourself going into the character rigging pipeline! Best of luck!! (:

MAYA RIGGING COURSE LINK

[Anonymous]

Hey, slow response, but thanks for the suggestion, I tried it but it didn't work unfortunately. But in any case I need to have it at Serial with GPU override because of a bug where Maya 2016 crashes when I scroll in the time-slider unless it has those settings.