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steve to the rescue!
this is just what the doctor ordered.
now is this slowing the rig down a
lot?
In my current case I dont worry (yet) as
I think a handfull of these will do -
but I'm considering another case where I might put
a ton of them all over the mesh?
----- Original Message -----
Sent: Tuesday, September 25, 2007 8:24
PM
Subject: Re: cloth rigging - how
to?
using the static kine state is stable in my experience...here
is how we have been using it here at blur.
http://www.xsi-blog.com/archives/209
steven
On 9/25/07, peter
boeykens <peter_b(at)skynet.be>
wrote:
Hi
Ben,
will see if I can get the driven static kinestate to work - the way
I
understand you, this should be indeed what I'm after. Hope XSI agrees
:-)
Speaking of cloth sims - from what I understand syflex has such a
thing as a
target pose (not initial state!) - the shape a cloth would
assume if not
under influence of any forces. But not in the XSI
implementation :-(
Anyone can confirm this?
> You have to
constrain two things to the cloth:
> 1) Your deformer
> 2) A
"base" null that represents the "undeformed" position. When the
>
deformer hasn't been moved these two things follow the cloth in the
>
exact same position.
>
> Then drive the static kinestate of
your deformer with the base null.
> This will make the deformations
relative to the base null rather than
> the predeformed position when
the operator was applied, which is what
> static kinestate is by
default. This is analogous to bind pose in
> Maya.
>
>
Also I've had luck with copying the cloth mesh and rigging it, then
>
using a simple scripted op to do a "blend" between them. You can even
> get really fancy and read a weight map if you like.
>
>
for each point in position array:
> alpha = weightmap * slider
value
> lerp(mesh1.point mesh2.point, alpha)
what's "lerp"?
and how can I access a point's weightmap value?
(its probably
RTFM - will dig into the scripting reference tomorrow, sounds
like it can
come in handy.)
>
>
> On 9/20/07, peter
boeykens < peter_b(at)skynet.be>
wrote:
>> trying to find a good workflow for rigging
cloth.
>>
>> at the moment I am cage deforming the highres
cloth geometry with the
>> syflex
>> simulated cloth. Its
all good.
>> now Im trying to layer deformations on top of the
simulation.
>>
>> What I would like to get now, is a layer
of (few) manipulators, driven by
>> the simulated
cloth.
>> I guess I'll cluster constrain nulls to the cloth, and
then parent my
>> manipulators under those nulls - but Im open for
other suggestions. With
>> those manipulators I'd like to "sculpt"
on top of the simulation.
>>
>> I do not want to simply
envelope the highres to the manipulators, since I
>> wont get the
precision I'm getting from the cage. But if I'm enveloping
>>
the
>> highres to the manipulators on top of the cage I'l get a
"double"
>> deformation.
>>
>> It works fine if
the layer of my manipulators is not deformed by the
>>
cloth,
>> sculpting locally around the default pose of the cloth,
but its not
>> intuitive at all working that
way.
>>
>> Any suggestions how to approach
this?
>>
>> ---
>> Unsubscribe? Mail Majordomo(at)Softimage.COM with the
following text in
>> body:
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>>
>
>
> --
> -Ben Barker
>
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