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15 Nov 2024 03:23:23 EST (-0500)
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From: GrimDude
Subject: Cloth - as shrinkwrap?
Date: 22 Dec 2004 10:26:25
Message: <41c99221$1@news.povray.org>
I'm working on a WW1 series of aircraft and I'd like to know if anyone has 
come up with a method to use a cloth simulation to emulate something like 
shrinkwrap? The older planes were covered with a fabric and aircraft dope 
which would cause the cloth to tense up to the underlying structure (except 
where rosin/wax existed). It's not just wings, either, and includes concave 
as well as canvex requirements.

Any ideas on how to proceed would be appreciated (I'd hate to have to create 
a surface mesh, but I suppose I could). I'm using a mesh2 array of objects 
as the group to be covered (if that helps).

Sample to be posted in p.b.i.

- Grim


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From: ingo
Subject: Re: Cloth - as shrinkwrap?
Date: 22 Dec 2004 11:42:08
Message: <Xns95C7B413C5582seed7@news.povray.org>
in news:41c99221$1@news.povray.org GrimDude wrote:

> I'm working on a WW1 series of aircraft and I'd like to know if
> anyone has come up with a method to use a cloth simulation to emulate
> something like shrinkwrap?

For quite some time now I thinking about such a system, but never got to 
doing something with it. I worked with shrinkwrap on a daily basis and 
always abused the machines by wrapping strange and non-smooth objects. 
The results always look nice, espacialy if a black shrinkwrap is used.

I thought about is as a kind of mesh modelling system, throw together 
some primitives, wrap the whole thing in a mesh of quads. Define a 
certain amount of elasticity for each edge and then reduce the length of 
the edges, while tracing rays to the object from the vertices.

Another idea I had about this is somehow using it for creating more 
realistic "wear" textures. After shrinking is done, somehow measure the 
distance from object to mesh and base a pattern on that.

I hope somebody with more math skilss and persistence will write some 
code for doing this.

Ingo


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From: Mike Thorn
Subject: Re: Cloth - as shrinkwrap?
Date: 22 Dec 2004 11:59:01
Message: <41c9a7d5$1@news.povray.org>
GrimDude wrote:
> I'm working on a WW1 series of aircraft and I'd like to know if anyone has 
> come up with a method to use a cloth simulation to emulate something like 
> shrinkwrap? The older planes were covered with a fabric and aircraft dope 
> which would cause the cloth to tense up to the underlying structure (except 
> where rosin/wax existed). It's not just wings, either, and includes concave 
> as well as canvex requirements.
> 
> Any ideas on how to proceed would be appreciated (I'd hate to have to create 
> a surface mesh, but I suppose I could). I'm using a mesh2 array of objects 
> as the group to be covered (if that helps).
> 
> Sample to be posted in p.b.i.

Could this perhaps be accomplished somehow through megapov's cloth 
simulation abilities?

~Mike


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From: GrimDude
Subject: Re: Cloth - as shrinkwrap?
Date: 22 Dec 2004 12:21:18
Message: <41c9ad0e$1@news.povray.org>
"Mike Thorn" <mik### [at] realitycheckmultimediacom> wrote in message 
news:41c9a7d5$1@news.povray.org...
> Could this perhaps be accomplished somehow through megapov's cloth 
> simulation abilities?
>
> ~Mike

I hope so Mike. I'm just wondering if anyone has done anything like this and 
what kind of experience they had with it (hints requested).

- Grim


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From: ingo
Subject: Re: Cloth - as shrinkwrap?
Date: 22 Dec 2004 12:21:50
Message: <Xns95C7BACEEBD1seed7@news.povray.org>
in news:Xns95C7B413C5582seed7@news.povray.org ingo wrote:

> For quite some time now I thinking about such a system, 

OT: just remeberd, this is one of the pages that came up while researching 
the subject, rather strange:
http://www.michaelkelly.fsnet.co.uk/karl.htm

Ingo


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From: GrimDude
Subject: Re: Cloth - as shrinkwrap?
Date: 22 Dec 2004 12:54:54
Message: <41c9b4ee$1@news.povray.org>
"ingo" <ing### [at] tagpovrayorg> wrote in message 
news:Xns95C7BACEEBD1seed7@news.povray.org...
> in news:Xns95C7B413C5582seed7@news.povray.org ingo wrote:
>
>> For quite some time now I thinking about such a system,
>
> OT: just remeberd, this is one of the pages that came up while researching
> the subject, rather strange:
> http://www.michaelkelly.fsnet.co.uk/karl.htm
>
> Ingo

That is a little too weird! :)

- Grim


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From: Jim Charter
Subject: Re: Cloth - as shrinkwrap?
Date: 23 Dec 2004 09:09:00
Message: <41cad17c@news.povray.org>
ingo wrote:
> in news:Xns95C7B413C5582seed7@news.povray.org ingo wrote:
> 
> 
>>For quite some time now I thinking about such a system, 
> 
> 
> OT: just remeberd, this is one of the pages that came up while researching 
> the subject, rather strange:
> http://www.michaelkelly.fsnet.co.uk/karl.htm
> 
> Ingo
Uhuh, you use cling wrap machines yourself you say?


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From: ingo
Subject: Re: Cloth - as shrinkwrap?
Date: 26 Dec 2004 06:18:23
Message: <Xns95CB7D2FBD401seed7@news.povray.org>
in news:41cad17c@news.povray.org Jim Charter wrote:

> Uhuh, you use cling wrap machines yourself you say?
> 

Yes, cling wrap and shrink film, but I don't use them on myself ...


Ingo


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