Re: spacer rigs

[Steven Caron <carons(at)gmail.com>]

I am having a hard time understanding what you are describing  
raffaele. It might be all the maya centric lingo.

I think if david uses a higher level description or a better example  
with context we can help get him what he needs.

s


On May 2, 2008, at 11:26 AM, Raffaele Scaduto-Mendola <raffaele(at)turbolinea.com 
> wrote:

> This doesn't solve the problem, but I did want to mention it should  
> any coding guru/plugin expert might be following this thread.
> I have also been thinking about this problem for a bit. In my  
> previous jobs I had access to custom deformer that offer a base.
> You could then rig/deform the deformer without moving the base, and  
> you would get a normal deformation, you could deform the base only  
> so the mesh would transform through the deformer, or you could move  
> both and the mesh would not deform.
>
> If you ever take a look at the SharkTale pirhana or sea horse crash  
> sequence you can see the result. I used this setup mostly to  
> blendshape deform the character to its basic shapes but then have  
> secondary "influence like" deformers to control the lip, and have  
> the control move (but have no effect until you moved them ) with the  
> blendshapes.
>
> Influence deformer from my understanding are global based, so the  
> mesh heiarchy doesn't affect them.
> Now what would be nice, ( and maybe theirs a way to do this using  
> moondust), is to have a optional "influence base" you could  
> optionally connect to any given influence.
> Then you could get that control of when and when not to deform.
>
> Just some tips, that might help figure this out.
> RSM
>
>
> Eric Thivierge wrote:
> > Hey David,
> >
> > If I'm understanding you correctly, have you looked at Steven  
> > Caron's post on XSI Blog about dorritos? Is this what you're  
> > looking for?
> >
> > Thanks,
> >
> > Eric Thivierge, XSI Database Admin
> > www.xsidatabase.com
> > eric(at)xsidatabase.com
> > Forum Username: EricTRocks
> >
> >
> > David Gallagher wrote:
> > > Oh, I guess one method would be to parent the second mesh and all  
> > > the joints as a whole to the traveling mesh, but I'm looking for a  
> > > way to more discretely parent controls around the body.
> > >
> > >
> > > David Gallagher wrote:
> > >
> > > > Does anyone have any ideas of workarounds for "spacer rigs". It's  
> > > > common in the Maya world at least to rig a second mesh and pipe  
> > > > in the result as a live blendshape. So, the second mesh is  
> > > > skinned to joints, for instance. Some of the joints, you might  
> > > > want direct control over, but they can't leave their location. In  
> > > > order to get them to ride with the main rig but only engage when  
> > > > actually directly used, you make "spacer" controls that mirror  
> > > > the actual joints, parent them to some part of the body, then  
> > > > pass their numeric transform values only back to the real joints  
> > > > sitting at global center.
> > > >
> > > > I think this is pretty standard, but I've heard of alternatives,  
> > > > such as inverting the shape from certain deformations, cancelling  
> > > > out the unwanted deformations.
> > > >
> > > > Anyway, I'm interested in any alternatives to spacer rigs that  
> > > > are used.
> > > >
> > > >
> > > > What would be optimal, is if you could transform the same joints  
> > > > in two different ways. One which just changes their location in  
> > > > space, and another which makes the deformation.
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