that would be my first guess. Try running a cycle
dependancy check.
From: owner-xsi(at)Softimage.COM
[mailto:owner-xsi(at)Softimage.COM] On Behalf Of Nick
Sent:
24-March-2006 08:00
To: XSI(at)Softimage.COM
Subject: Re:
Orientation constraint jitter
Anything odd in your setup? Any funky loops? Is your upvector a
child of the constrained object or similar setup?
Gene
Crucean wrote:
> Yeah I should have been a little more clear. It's
upvectored. I've
> tried all sorts of things like plotting,
>
freezing things, disassembling and rebuilding from scratch. All sorts
> of random attempts. If you saw the animation, it doesn't really
look
> like an upvector issue either.
>
> I just tried a
render on a single render node and I think that worked.
> Interesting.
I'll know tomorrow when I get back to work.
>
> Thanks
Raff
>
>
>
>
>
> On 3/23/06, *Raffaele
Fragapane* <jaco(at)thejaco.com
> <mailto: jaco(at)thejaco.com>>
wrote:
>
> if a direction constraint
isn't upvectored, the resolution of the
>
transform is left to XSI's heuristics.
>
Solving such a situation in a consistant manner, without blatant
> flipping, is absolutely NOT
trivial.
>
> my guess is that you aren't
upvectoring such constraint, which
> means
you
> are resolving a plane by its normal and
are giving no input
>
whatsoever
> to XSI about how to orient the
roll.
>
> add an upvector or, if the
character neve directs the eyes past the
>
zenith, just use an arbitrary axis.
>
>
if you have an unstable solution to the transform and you ARE
> upvectoring, then it's a job for
bug-reportMan
>
>
******************************
>
| Raffaele
Fragapane
|
> | Rising Sun
Pictures |
>
| "Remember, TD is for TopDog" |
>
******************************
>
>
>
>
Gene Crucean wrote:
>
> > ehh, meant
direction constraint. doh!
>
>
> > So Dan, you're sounds like it was
popping or something. How come
>
only
> > a few frames? My eye literally
shakes a half degree or so
>
constantly
> > through the whole
animation.
>
>
> >
>
> -gc
> >
> >
>
>
> > On 3/23/06, *Dan Yargici* <dan(at)imajonline.com
>
<mailto:dan(at)imajonline.com
>
> > <mailto: dan(at)imajonline.com <mailto:dan(at)imajonline.com>>>
wrote:
> >
>
> Gene Crucean wrote:
> > > Anyone
have an orientation constraint cause rotation jitter?
I
> > have
an
> > > eye
ball that's freaking out. The funny thing is that
it
> doesn't
>
> > twitch when I do captures, only renders
freak out.
> >
>
> >
>
> >
>
> > >
--
> > > Gene
Crucean
> > >
Generalist
> > >
www.quietman.net <http://www.quietman.net>
>
< http://www.quietman.net>
<http://www.quietman.net>
>
> Yup, I had this today with the first frame of
each packet
> sent to
the
> >
farm.... Just had the pleasure of tracking down and
> deleting about
20
> > rogue frames
from about 10 different passes and
re-rendering
> >
sequentially.
>
>
> > To
clarify, orientation constraints, like you said.
> >
>
> DAN
>
>
> >
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> > Gene
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> > Generalist / TD
> > www.quietman.net <http://www.quietman.net>
<
> http://www.quietman.net
>
> >
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>
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> www.quietman.net <http://www.quietman.net>
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