Re: [Algorithms] cloth and animation

[Bob <ma...@mb...>]

Just about every realtime implementation I have seen (from Virtua
Fighter to Nocturne) has this problem with interpenetration. You may
find some papers on "self collision" but it seems most of those are
intended to address the problem in non-realtime.

You might try creating an artificial boundary for cloth movement by
using a bone structure; constraining cloth deformation beyond a fixed
diameter from the cloth object bone. Or perhaps a less accurate self
collision detection using the bone structure, to at least limit the
occurrences.

To be honest this is a subject I'd like to know more about as well, so
please let us know if you come up with something ingenious on your own
;)

--Bob



Yordan Gyurchev wrote:
> 
> We were considering some real-time physically simulated cloth for
> characters.
> 
> Alas, we have encountered some problems.
> 
> - Cloth and animation... the character bone system animates through key
> frames and sometimes physically simulated cloth is being penetrated by key
> framed bone. We tried some simple "fake" solutions but they solved some
> particular problems and are not applicable in general.
> Anybody solved this? Any ideas?
> 
> - Are there any games that use physically simulated cloth for characters?
> Alternative solutions? Or hybrid (physiscs/animated/tweened) solutions?
> 
> Thanks,
> Yordan
> 
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