i found that to avoid the open file with curves problem it helps to freeze
them first (at least with pre 5)
----- Original Message -----
From: "Kris Rivel" <krisr(at)quietman.net>
To: <XSI(at)Softimage.COM>
Sent: Thursday, October 06, 2005 3:10 PM
Subject: Re: XSI5 nurbs curves
Ah ok....I see what you mean....I can see where this behavior could
screw you. As for your glitches when opening your scene....no idea.
Dadi Einarsson wrote:
You can't create a cluster out of the knots, only the CVs. If you
interact with the knot's handles, the CV moves away from its cluster
center. I'm running a simulation on the control objects to which the
cluster centers are constrained which is probably where the knots are
getting pulled (no idea why they would though), but the fundamental
problem is that the handles override the CV's position making cluster
contraints a very shaky option.
Kris Rivel wrote:
Yeah but those handles are simply for interaction purposes. Moving
them just gives you a different type of control but creating a
cluster center out of them should behave the same. Could you send an
example or a script to generate a scene that shows your problem?
Kris
Dadi Einarsson wrote:
you'd think so, wouldn't you. Now press "m" and see the handles of
death appear, ready to reap destruction...
Kris Rivel wrote:
"Create>Curve>Draw Cubic by CVs" will give you the traditional curve.
Kris
Dadi Einarsson wrote:
....so what the hell has happened to curves in 5? I have a rig
which depends on cluster contraints, said cluster contraints now
being utterly useless as the new bezier handles move the tag point
away from its center. There's something very buggy happening
between saving a scene and reopening it but basically what happens
is that when I reopen my scene the beziers have gone berserk and
scewed all the clusters away from their centers, thus completely
exploding my rig.
Softimage - something like bezier handles on curves seems like it
could be a good idea, but at least leave regular curves that are
proven to work and are a fundamental part of workflow as an option.
Very upset.
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