Andrew Grant 17 December 2008 02:43 PM
Hello,
I’m looking for information on how to use Multi Referential Constraints with layers.
I have a character with a weapon extension, and Multi Referential Constraints set up to allow the hands to be constrained to the weapon or vise versa.
When the constraint is turned and I try to set keys (Full Body) on a new layer, the hands and weapon get keys on the base layer and the feet get keys on the new layer. Undoing will remove keys on the feet and hips, while the hands and weapon will retain the keys that were set. (This makes the keying destructive)
I don’t know if I’m not understanding how Multi Ref Constraints work, or if this is a bug.
Thanks!
-Andrew
It could be a bug based on what your seeing, make sure you send a file to autodesk for them to look at and confirm.
I just did a quick test to check.. what I get is
with a weapon object as the constrained object and two hand ctrls in as parents I can key in full body but changing the multi ref , it keyframes the attributes in its “key group” on the base layer. object offsets and the switch all get keys placed on base layer while my parent objects will key fine on the other layers. If you need to edit the switch you need to have the base layer selected or, set the constrained object to single layer so you can see the multi ref keys no matter what layer you are on.
I think the best way to have this work would be have your weapon object have a weapon rig that it is following so that the top node is the ridged object in the multiRef and then the child object is the “animate me” weapon ctrl that the real weapon is constrained to.
The other issue might be in the “character extension” if you have not added the mulit ref constraint to the extension it might be causing some keying group issues and problems with undo.? Just a guess.
Watch what the key controls tell you for what mode your in, if you pick the ridged/constrained object then the keying mode switches out of full body and over to muli ref.
Let me know how it goes,
Brad
Brad Clark
Co-Founder: Rigging Dojo-Teaching the art and science of character rigging
Author: Inspired 3D Advanced Rigging
The Character Animator Toolkit for Motionbuilder :available now:
| 
