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From: Fernando González del Cueto
Subject: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 02:45:11
Message: <3c492407@news.povray.org>
I tried to simulate a stiffer cloth, but I believe this time it may have
been too stiff! I think everything goes well until the final frames, in
which the cloth sort of "springs" quickly, seemingly in order to extend the
cloth as flat as possible and tries to go under the sphere... which
obviously does not happen with ordinary cloths!

What do you think of this new stiffness? Maybe something intermediate would
be much better, I think.

Also, I'm still not satisfied with the air resistance...

Well... I must get some sleep because tomorrow I have to wake up early. But
I'll be very happy to receive your comments and suggestions,


Mexico City, Mexico.


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Attachments:
Download 'newcloth09.m1v.mpg' (300 KB)

From: KalleK
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 03:01:14
Message: <3c4927ca$1@news.povray.org>
> What do you think of this new stiffness? Maybe something intermediate would
> be much better, I think.

I think it looks better now it's is not melting anymore but, but it should
have at least some wrinkles in the end of the animation.
Maybe another object - a little sphere/box, which rests under the cloth. The
cloth shouldn't be flat as a plane in the end, IMHO.

cukk


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From: Rick [Kitty5]
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 06:09:21
Message: <3c4953e1$1@news.povray.org>
> I tried to simulate a stiffer cloth, but I believe this time it may have
> been too stiff! I think everything goes well until the final frames, in
> which the cloth sort of "springs" quickly, seemingly in order to extend
the
> cloth as flat as possible and tries to go under the sphere... which
> obviously does not happen with ordinary cloths!
>
> What do you think of this new stiffness? Maybe something intermediate
would
> be much better, I think.

I think something closer to the wrinkly cloth would be better - this like a
sheet of rubber, while the other looked quite realistic IMO


--

Rick

Kitty5 WebDesign - http://Kitty5.com
POV-Ray News & Resources - http://Povray.co.uk
TEL : +44 (01270) 501101 - FAX : +44 (01270) 251105 - ICQ : 15776037

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From: Tony B
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 06:16:11
Message: <3c49557b@news.povray.org>

news:3c492407@news.povray.org...
> I tried to simulate a stiffer cloth, but I believe this time it may have
> been too stiff! I think everything goes well until the final frames, in
> which the cloth sort of "springs" quickly, seemingly in order to extend
the
> cloth as flat as possible and tries to go under the sphere... which
> obviously does not happen with ordinary cloths!

I like the 'spring'. I was going to comment on the previous version because
it looked like there was too much friction between the sphere and the cloth
as the cloth finally falls to the 'ground'

Brilliant!!

T


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From: Tony[B]
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 12:02:32
Message: <3c49a6a8@news.povray.org>
It's getting better. Keep trying. You'll find the right mix of parameters
eventually. :)


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From: Tony[B]
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 12:04:20
Message: <3c49a714@news.povray.org>
Um, hello, sir. I notice you use the name "Tony B". Due to the fact that
I've been on these groups since 1998, and this is the first time I've seen
you around, I would like to politely request that you come up with a
slightly different name so people don't confuse us. For a moment, I thought
I'd checked the newsgroups in my sleep and replied to this animation and
didn't remember a thing! :)


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From: JRG
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 12:46:39
Message: <3c49b0ff@news.povray.org>
Hi "Tony[B]" <ben### [at] catholicorg>, you wrote in message:
3c49a714@news.povray.org...
> Um, hello, sir. I notice you use the name "Tony B". Due to the fact that
> I've been on these groups since 1998, and this is the first time I've seen
> you around, I would like to politely request that you come up with a
> slightly different name so people don't confuse us. For a moment, I thought
> I'd checked the newsgroups in my sleep and replied to this animation and
> didn't remember a thing! :)

RTFM:
section 6.2.2.3:  "Identifier Name Collisions".

;-D


--
#local j=text{ttf"arial""JRG".2,0}#local J=0;#while(J<10)#local R=0;#while
(R<2)#local G=0;#while(G<1)#if(inside(j<R,G.1>))object{j scale.025translate
<R-1G-J/20J/-40+2>pigment{rgb<9J>}}#debug"O"#else#debug" "#end#local G=G+
.025;#end#local R=R+.05;#debug"\n"#end#local J=J+1;#end// JRG

Home: http://digilander.iol.it/jrgpov  //New: Kitchen scene WIP


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From: Tom Bates
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 14:59:37
Message: <3c49d029$1@news.povray.org>
I would have expected it to fold over on itself and stay folded (but not
tightly) in its resting position.

I laid down a face-cloth and folded over the corner to visualize what I was
thinking.

--
Tom Bates
#macro T(B)#local m=mod(B,8);#local B=floor(B/8);m#end#local
C=126981491245202;#
local D=115694168992822;sphere_sweep{b_spline 16#local
i=0;#while(i<16)<T(C)-4,T
(D)-4,10-i/10>.1#local i=i+1;#end pigment{rgb 1}}light_source{-10,1}// Tom
Bates


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From: Slime
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 15:36:11
Message: <3c49d8bb$1@news.povray.org>
It looks like it's afraid to fall onto itself, like it's repelling itself or
something.

- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]


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From:
Subject: Re: Stiffer cloth (less wrinkles!) MPG1
Date: 19 Jan 2002 16:53:22
Message: <3c49ead2@news.povray.org>
> Well... I must get some sleep because tomorrow I have to wake up early.
But
> I'll be very happy to receive your comments and suggestions,

*g* I know this problem ;-)

It looks like the cloth gets "sucked" rather than "blown" underneath the
sphere.
Does your simulation take care abouth the thinckness of the cloth? It looks
like it is infintively thin?
regards
SY


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