Re: Orientation constraint jitter

["Gene Crucean" <emailgeneonthelist(at)gmail.com>]

The rig came from someone else at our south office and I just haven't had time to reverse engineer it. I'll test some cycle dependency stuff in a bit. Thanks guys.

At least the single node render worked so that can be a last resort. By the way Helge, plotting was the first thing I tried but it didn't work either. Thanks though.



-Gene

On 3/24/06, Helge Mathee < Helge_Mathee(at)softimage.com> wrote:

well - you can always plot before rendering. that's a lame but safe way to do it.

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From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of kim aldis
Sent: Friday, March 24, 2006 4:22 AM
To: XSI(at)Softimage.COM
Subject: RE: Orientation constraint jitter

that would be my first guess. Try running a cycle dependancy check.

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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 Crucean
>     > Generalist / TD
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> Gene Crucean
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-- 
Gene Crucean
Generalist / TD
www.quietman.net