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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?
>>
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>
>
> --
> -Ben Barker
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