RE: rigging dilemma: driving a parent with attributes of the child

Date : Tue, 28 Feb 2006 14:36:35 -0500
To : <XSI(at)Softimage.COM>
From : "Andre DeAngelis" <andre.deangelis(at)ubisoft.com>
Subject : RE: rigging dilemma: driving a parent with attributes of the child
Yes I relise that Kim,

But having tried it and seeing hat it works (at least in a simple test),
I am wondering what makes this colution less than desirable.

Andre 

-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf
Of kim aldis
Sent: Tuesday, February 28, 2006 2:29 PM
To: XSI(at)Softimage.COM
Subject: RE: rigging dilemma: driving a parent with attributes of the
child

Because the rotation of the parent is driven by the child, but the
rotation of the parent affects the position of the child, which then
affects the direction of the parent, which affects the rotation of the
child ..... 

> -----Original Message-----
> From: owner-xsi(at)Softimage.COM
> [mailto:owner-xsi(at)Softimage.COM] On Behalf Of Andre DeAngelis
> Sent: 28-February-2006 19:04
> To: XSI(at)Softimage.COM
> Subject: RE: rigging dilemma: driving a parent with attributes of the 
> child
> 
> There is only one parameter dependency here. 
> 
> If you parent one null to another and then apply a direction 
> constraint to the parent (to point to the child) it workd just dandy.
> 
> In fact, you can continur to rotate the parent in branch mode, to 
> offset the whole set-up.
> 
> Am I missing something here? 
> 
> -----Original Message-----
> From: owner-xsi(at)Softimage.COM
> [mailto:owner-xsi(at)Softimage.COM] On Behalf Of kim aldis
> Sent: Tuesday, February 28, 2006 1:48 PM
> To: XSI(at)Softimage.COM
> Subject: RE: rigging dilemma: driving a parent with attributes of the 
> child
> 
> 	I'd be intrigued to see how, as rob says, the child is dependant
upon 
> the parent which is dependant upon the child, which is dependant upon 
> the parent which is dependant upon the child which ...... And the 
> whole thing rapidly crawls up it's own arse. Whichever software you 
> use.
> Would have been the same in SI3D too.
> 
> > -----Original Message-----
> > From: owner-xsi(at)Softimage.COM
> > [mailto:owner-xsi(at)Softimage.COM] On Behalf Of David Gallagher
> > Sent: 28-February-2006 18:39
> > To: XSI(at)Softimage.COM
> > Subject: Re: rigging dilemma: driving a parent with
> attributes of the
> > child
> > 
> > 
> > Maya has its benefits. It handles this situation better
> unfortunately.
> > 
> > > I don't see how you can avoid a cycle.
> > >
> > > As soon as you tranlsate the child in negative Y the
> parent rotates
> > > causing the child to move causing the parent to rotate
> causing the
> > > child to move...
> > >
> > > _rob
> > 
> > 
> > 
> > --
> > David Gallagher
> > Animator, Blue Sky Studios
> > 
> > ---
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