Hi, I'm going to post my current progress in the addition of "wrinkliness"
and air interaction with my cloth.

The cloth has approximately 7200 smooth_triangles, and they are generated
with a program I wrote in C, which makes all the simulation. I've found this
to be a great way to enable some parallelization, as I put my brother's
computer to run this program and my computer does the rendering.

I am still not satisfied with the air resistance. I believe it is still too
soft. I may add some wind soon.

Yesterday I saw Andrew Cocker's cloth simulations (posts are around
May/2001) for first time and was completely impressed. Now I have a very
difficult standard to meet!!!

Well, I hope you like it and would love to receive any
comments/suggestions...

Fernando.

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Attachments:
Download 'newcloth05.m1v.mpg' (314 KB)

my my my... wow...   <applause>  I like that.  Is are you working
on integrating this eventually to be usable pretty simply into
POV or is this a rather specialized app. for your own use?

-peter
-- 
Current obsession: "Ballet pour ma fille."
http://www.applesnake.net

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Hi Fernando,

this looks absolutely awesome, very realistic!
one can almost feel the structural properties
of the cloth.

there's just one thing that i would improve:
the folds of the cloth suggest that it is very thin
and fine, like silk for example, but the big fold
from the sphere to the front-left corner of the
cloth is goffering (i hope this is the right word)
a bit abruptly and disjointed. it should fold more
smoothly to underline the material.
But that's just a minor thing.

Keep on clothing ; )

Thies

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"Fernando González del Cueto" <fcu### [at] yahoocom> wrote in message
news:3c48440b@news.povray.org...
> Yesterday I saw Andrew Cocker's cloth simulations (posts are around
> May/2001) for first time and was completely impressed. Now I have a very
> difficult standard to meet!!!

Thanks for the compliments Fernando, although I feel that your efforts are
better than mine in as much that you have written your own code, whereas I
simply utilised ClothSim :-) . Keep up the good work.

All the best,

Andrew Cocker

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Wow! Looks great! 
This brings a bit "life" into cold (or should I say cool!?) Pov!

Go on!
-- 
Sebastian H.

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"Dearmad" <dea### [at] applesnakenet> wrote in message
news:3C485A4D.CE2CE4F0@applesnake.net...
> my my my... wow...   <applause>  I like that.  Is are you working
> on integrating this eventually to be usable pretty simply into
> POV or is this a rather specialized app. for your own use?
>
> -peter

Thanks Peter! I still don't have plans for that... Right now I am just doing
it for the extreme pleasure derived from trying to simulate real physical
phenomena :)

I believe it would involve some work to make this a generalized and friendly
application, but if I do so, I'll let you know.

Thank you very much for your comments! I'm very glad you liked it!

Fernando.

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"Thies Heidecke" <h3i### [at] gmxnet> wrote in message
news:3c485f33$1@news.povray.org...
> Hi Fernando,
>
> this looks absolutely awesome, very realistic!
> one can almost feel the structural properties
> of the cloth.
>
> there's just one thing that i would improve:
> the folds of the cloth suggest that it is very thin
> and fine, like silk for example, but the big fold
> from the sphere to the front-left corner of the
> cloth is goffering (i hope this is the right word)
> a bit abruptly and disjointed. it should fold more
> smoothly to underline the material.
> But that's just a minor thing.
>
> Keep on clothing ; )
>
> Thies

Thank you Thies! I'm very glad you've found it realistic! I'm still not very
happy with the air resistance, but I'm still working on it!

You're right, it's meant to simulate a very thin, feeble and flexible cloth.
I'm right now experimenting with a more robust-like and a bit stiffer cloth.
I had great results with those new settings, but on the final frames I saw a
very strange behaviour, so I won't post it until I try to solve that.

About your suggestion, I didn't understand you very well about the
"goffering"... I know it is difficult to describe such things... I don't
know if you can describe it in another way?

Thank you again for your lauds,

Fernando González del Cueto.
Mexico City, Mexico.

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"Sebastian Holtermann" <seb### [at] webde> wrote in message
news:3c48798c@news.povray.org...
> Wow! Looks great!
> This brings a bit "life" into cold (or should I say cool!?) Pov!
>
> Go on!
> --
> Sebastian H.

Thank you Sebastian! I always enjoy, as everyone else here, trying to
simulate real things. Many people don't understand it, they say that we
already have the real thing, then why simulate it?

But as Henri Poincaré said : "scientists don't study nature because it is
useful, but because they find pleasure in doing so, and they find pleasure
because it nature is beautiful.".

Thanks again for your comments Sebastian!

Fernando González del Cueto
Mexico City.

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"Andrew Cocker" <mai### [at] mariner9fsnetcouk> wrote in message
news:3c4871cb@news.povray.org...
>
> "Fernando González del Cueto" <fcu### [at] yahoocom> wrote in message
> news:3c48440b@news.povray.org...
> > Yesterday I saw Andrew Cocker's cloth simulations (posts are around
> > May/2001) for first time and was completely impressed. Now I have a very
> > difficult standard to meet!!!
>
> Thanks for the compliments Fernando, although I feel that your efforts are
> better than mine in as much that you have written your own code, whereas I
> simply utilised ClothSim :-) . Keep up the good work.

Well, I'm greatly honored to be complimented by an expert! :)

Thank you,


Fernando González del Cueto
Mexico City.

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"Dearmad" <dea### [at] applesnakenet> wrote in message
news:3C485A4D.CE2CE4F0@applesnake.net...
> my my my... wow...   <applause>  I like that.  Is are you working
> on integrating this eventually to be usable pretty simply into
> POV or is this a rather specialized app. for your own use?
>
> -peter

(oops, I misplaced the reply... I'm posting it in the right place now)

Thanks Peter! I still don't have plans for that... Right now I am just doing
it for the extreme pleasure derived from trying to simulate real physical
phenomena :)

I believe it would involve some work to make this a generalized and friendly
application, but if I do so, I'll let you know.

Thank you very much for your comments! I'm very glad you liked it!

Fernando.

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Wow! F A N T A S T I C! :))

Congratulatins.

But the cloth still looks a little odd to me and I cannot exacly explain
why.

It looks like wet cloth, or a flat thin piece of chewed chewing gum (not
joking, its the best way I can explain it).

Mabe because its so slow, or because the cloth stretches a little too much,
I don't know.

But defenately an awesome piece of work very close to the real thing.
Must have been hard to get here. I certainly hope you can do even better.
:))

Best regards.

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"JPGargoyle" <jpg### [at] clixpt> wrote in message
news:3c48c3de$1@news.povray.org...
> Wow! F A N T A S T I C! :))
> Congratulatins.

THANKS!!! I'm glad you liked it! :)

> But the cloth still looks a little odd to me and I cannot exacly explain
> why.
> It looks like wet cloth, or a flat thin piece of chewed chewing gum (not
> joking, its the best way I can explain it).

I agree with you totally. As I said in another post, I'm now experimenting
with a stiffer cloth. The new one does not fold as easily as this one, to
avoid that chewing gum-like feeling. However I think it may be used for
particular types of cloth, like very very thin, silk-like cloths.

> Mabe because its so slow, or because the cloth stretches a little too
much,
> I don't know.
>
> But defenately an awesome piece of work very close to the real thing.
> Must have been hard to get here. I certainly hope you can do even better.
> :))
>
> Best regards.

I thank you for yor comments!!!

Fernando.
Mexico City, Mexico.

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> Mabe because its so slow, or because the cloth stretches a little too
much,
> I don't know.
>

It almost looks like it melted.  Maybe the C program has a secondary use:
    A melt simulator ;)

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Just forgot to say that the wrinkles are really great, no matter what type
of cloth it is.
I find them the best I've seen, which gives your work more value, because
you are not using a commercial program developed by a ton of hard-core
programmers with (also) a ton of phisics experts ;) but it was all your
work.

Grrrrnf! I wish I could have done something like that.

Best regards.

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That is realy a cool and useful idea.
I think its worth a try, and mabe Fernando can come up with a good
simulation. :))

Best regards

> It almost looks like it melted.  Maybe the C program has a secondary use:
>     A melt simulator ;)
>

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