Hi Dave-
Not sure if this is what you're looking for, but I'm not getting any problems by linking parent rotation to child's local translation.
What does happen is a refresh issue. As you select the child and translate it, the default behavior is to compensate from the parent's rotation. You can override this default behavior by setting the Pos and Rot Limits on the channels you want locked to the parent.
Let me know if you need a repro script.
-Brad
> -------Original Message-------
> In Maya, I have no problem making two parented nulls and making the
> parent's rotation dependant on the child's translation. So as you (for
> instance) translate the child down in y, the parent can rotate the child
> in x.
>
> This same setup creates a dependancy cycle in xsi. There's probably some
> other way to this, but I can't figure it out.
>
>
> The situation is a jaw that's translating down, but needs to rotate as
> well from a high pivot as it opens when the neck is at some poses.
>
> Thanks,
>
> --
> David Gallagher
> Animator, Blue Sky Studios
>
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