Problems with Syflex

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Problems with Syflex

Problems with Syflex

2004-06-25 - By Matthew Lowery

Back

Reply: << 11 12

Hi Chris,

is the problem limited to one piece of geometry? what I mean is have you
tried running a simulation on another piece of "cloth"?
I have had this problem once in the past and found that using a new piece of
geometry fixed it. In my case I was fortunate as the geometry I replaced was
a cylinder. If your cloth geometry is more complex, try exporting it as a
dotxsi file and re-import before trying the simulation again.

Hope this helps,
m@

P.S. don't let this one glitch force you to give up on syflex... it is miles
ahead of xsi cloth and deserves all the credit that currently enjoys.

-- --Original Message-- --
From: Raffaele "ThE_JacO" Fragapane [mailto:jaco@(protected)]
Sent: Friday, June 25, 2004 8:07 AM
To: XSI@(protected)
Subject: RE: Problems with Syflex

I absolutely don't doubt you are having problems, but I'm a bit baffled
since Syflex behaved extraordinary well here (with the exception of the lack
of parameters for inerithed inertia on clusters and nails and the problems
creating partial cloth clusters, both workaroundable).

What you have seems to be a collision issue, in that case you could want to
try and reduce consistently the exterior envelope and raise the interior
one, so that the cloth will be able to sit down through the mesh without
jumping around.
Did you already try that?

How are simple scenes (the usual grid flapping on a torus and the such)
behaving for you?

Also syflex doesn't have a live mode, what it can do is always compute
(risky) or caching the very same computations.
I'd suggest to work with caching always pointing to a file and to bind the
clear cache command to a shortcut to make the recomputation process less
painful and clicky.

~Raffaele Fragapane
~Freelance Technical Animator & TD
~Senior TA @ Peerless Camera
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Chris Peltz
Sent: Friday, June 25, 2004 6:17 AM
To: XSI@(protected)
Subject: RE: Problems with Syflex

Nope, I'm just trying to get the clothes to settle so that I can freeze an
initial state, so there is no movement on my model. I tried it with nails,
and I tried it without nails... with the obstacle (my character) and without
(and all four combinations)... I didn't cache to a file... I was running in
live mode... like I said I just wanted the cloth to settle on my character
with gravity.

I tried playing all frames, but as I said the clothes, (a dress in this
case) merely disappears in the second frame. It was very frustrating.

I tried all sorts of spring/damp settings as they recommended in both the
documentation and the tutorial... and the default settings... same result.
Did exactly the same thing with XSI cloth and everything worked as
expected...

Chris Peltz...

-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Raffaele "ThE_JacO" Fragapane
Sent: Thursday, June 24, 2004 6:14 PM
To: XSI@(protected)
Subject: RE: Problems with Syflex

Is the object animated, or the nails are, and at frame 1 or 2 the inherited
inertia is too high?

Honestly speaking I've been exploiting syflex massively both before it came
as a freebie with the advanced version and now, and found its strongest
point to be predictability and reliability.

Are you caching always to the same file or something like that maybe?
Because in that case re-reading an existing cache could be bitchy.

Also when you want to simulate by playing make sure you have "play all
frames" in the animation options, otherwise frames will be skipped and the
order of previous states that spring networks rely on will be messed up.

~Raffaele Fragapane
~Freelance Technical Animator & TD
~Senior TA @ Peerless Camera

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Hi Chris,


is the problem limited to one piece of geometry? what I mean is
have you tried running a simulation on another piece of "cloth"?

I have had this problem once in the past and found that using a
new piece of geometry fixed it. In my case I was fortunate as the geometry I
replaced was a cylinder. If your cloth geometry is more complex, try exporting
it as a dotxsi file and re-import before trying the simulation again.

Hope this helps,
 m@ 


P.S. don't let this one glitch force you to give up on syflex..
. it is miles ahead of xsi cloth and deserves all the credit that currently
enjoys.

-- --Original Message-- --
 From: Raffaele "ThE_JacO" Fragapane [<A HREF="mailto
:jaco@(protected)">mailto:jaco@(protected)</A>]
 Sent: Friday, June 25, 2004 8:07 AM
 To: XSI@(protected)
 Subject: RE: Problems with Syflex

 

I absolutely don't doubt you are having problems, but I'm a bit
baffled
 since Syflex behaved extraordinary well here (with the
exception of the lack
 of parameters for inerithed inertia on clusters and nails and
the problems
 creating partial cloth clusters, both workaroundable).


What you have seems to be a collision issue, in that case you
could want to
 try and reduce consistently the exterior envelope and raise
the interior
 one, so that the cloth will be able to sit down through the
mesh without
 jumping around.
 Did you already try that?


How are simple scenes (the usual grid flapping on a torus and
the such)
 behaving for you?


Also syflex doesn't have a live mode, what it can do is always
compute
 (risky) or caching the very same computations.
 I'd suggest to work with caching always pointing to a file and
to bind the
 clear cache command to a shortcut to make the recomputation
process less
 painful and clicky.


~Raffaele Fragapane
 ~Freelance Technical Animator & TD
 ~Senior TA @ Peerless Camera
 -- --Original Message-- --
 From: owner-xsi@(protected) [<A HREF="mailto:owner-xsi
@(protected)">mailto:owner-xsi@(protected)</A>] On Behalf Of
 Chris Peltz
 Sent: Friday, June 25, 2004 6:17 AM
 To: XSI@(protected)
 Subject: RE: Problems with Syflex


Nope, I'm just trying to get the clothes to settle so that I
can freeze an
 initial state, so there is no movement on my model.  I
tried it with nails,
 and I tried it without nails... with the obstacle (my
character) and without
 (and all four combinations)... I didn't cache to a file... I
was running in
 live mode... like I said I just wanted the cloth to settle on
my character
 with gravity.


I tried playing all frames, but as I said the clothes, (a dress
in this
 case) merely disappears in the second frame.  It was very
frustrating.


I tried all sorts of spring/damp settings as they recommended
in both the
 documentation and the tutorial... and the default settings...
same result.
 Did exactly the same thing with XSI cloth and everything
worked as
 expected... 


Chris Peltz...

 

-- --Original Message-- --
 From: owner-xsi@(protected) [<A HREF="mailto:owner-xsi
@(protected)">mailto:owner-xsi@(protected)</A>] On Behalf Of
 Raffaele "ThE_JacO" Fragapane
 Sent: Thursday, June 24, 2004 6:14 PM
 To: XSI@(protected)
 Subject: RE: Problems with Syflex


Is the object animated, or the nails are, and at frame 1 or 2
the inherited
 inertia is too high?


Honestly speaking I've been exploiting syflex massively both
before it came
 as a freebie with the advanced version and now, and found its
strongest
 point to be predictability and reliability.


Are you caching always to the same file or something like that
maybe?
 Because in that case re-reading an existing cache could be
bitchy.


Also when you want to simulate by playing make sure you have
"play all
 frames" in the animation options, otherwise frames will
be skipped and the
 order of previous states that spring networks rely on will be
messed up.


~Raffaele Fragapane
 ~Freelance Technical Animator & TD
 ~Senior TA @ Peerless Camera
  


---
 Outgoing mail is certified Virus Free.
 Checked by AVG anti-virus system (<A HREF="http://www.grisoft
.com" TARGET="_blank">http://www.grisoft.com</A>).
 Version: 6.0.638 / Virus Database: 409 - Release Date: 21-Mar
-04
  


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