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From: Josh
Subject: Re: spark
Date: 16 Jul 2004 04:40:30
Message: <40f7947e$1@news.povray.org>
> Not much if its just a function like y for a plane + a pigment pattern.
:)

I'd be interested to know what you mean?  Can you give an example please.

p.s. if its in the shape of a deagle i wont believe its an isosurface.


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From: Timothy Cook
Subject: Re: spark
Date: 16 Jul 2004 05:23:35
Message: <40f79e97$1@news.povray.org>
oskar bertrand wrote:
> A portable battery operated Van De Tesla generator.  Also, quite a CPU 
> cycle abyss.

uffizi gallery?

-- 
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean

-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------


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From: andrel
Subject: Re: spark
Date: 16 Jul 2004 06:07:07
Message: <40f7a8cb$1@news.povray.org>
oskar bertrand wrote:

 > A portable battery operated Van De Tesla generator.

Physically not convincing. There are shorter paths from one metal
side to the other than the two sphere. The spark would be somewhere
else.

Otherwise a nice image.

BTW. what is a Van De Tesla generator? More precisely, there are
a number of machines that generate high voltages. This one does
not exist as fas as I know, but of course you are free to invent
your own here.

> Oskar
>


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From: Hans Fink
Subject: Re: spark
Date: 16 Jul 2004 07:20:16
Message: <40f7b9f0$1@news.povray.org>
andrel wrote:

> oskar bertrand wrote:
> 
>  > A portable battery operated Van De Tesla generator.
> 
> Physically not convincing. There are shorter paths from one metal
> side to the other than the two sphere. The spark would be somewhere
> else.
> 
> Otherwise a nice image.
> 
> BTW. what is a Van De Tesla generator? More precisely, there are
> a number of machines that generate high voltages. This one does
> not exist as fas as I know, but of course you are free to invent
> your own here.

Must be something like a van der Graaf generator with
Tesla coils.

:-)

-Hans-


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From: oskar bertrand
Subject: Re: spark
Date: 16 Jul 2004 12:57:06
Message: <40f808e2@news.povray.org>
Timothy Cook wrote:
> uffizi gallery?

Yup.  I was looking for something to reflect off the chrome, and I 
thought that would be nice.  Chrome without reflection is pretty un-chromey.


Oskar


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From: oskar bertrand
Subject: Re: spark
Date: 16 Jul 2004 13:07:15
Message: <40f80b43$1@news.povray.org>
andrel wrote:

> Physically not convincing. There are shorter paths from one metal
> side to the other than the two sphere. The spark would be somewhere
> else.

Apparently you're not familiar with the precise workings of a Van De 
Tesla generation system ;-)


> Otherwise a nice image.

Thanks.

> BTW. what is a Van De Tesla generator? More precisely, there are
> a number of machines that generate high voltages. This one does
> not exist as fas as I know, but of course you are free to invent
> your own here.

Invention of the nonsensical is what attracted me to rendering in the 
first place.  For reality I suppose I could buy a digital camera.


Oskar


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From: Skip Talbot
Subject: Re: spark
Date: 16 Jul 2004 13:11:26
Message: <40f80c3e$1@news.povray.org>
Mike Williams has a few good examples on his page:
http://www.econym.demon.co.uk/isotut/pigment.htm

Skip


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From: oskar bertrand
Subject: Re: spark
Date: 16 Jul 2004 13:14:43
Message: <40f80d03$1@news.povray.org>
So, I could type in:

f'(x) = 2 sinh(2x),    g'(x) = 2 sinh x - 3 cosh x,    h'(x) = - 
sinh(x)/cosh2(x)k'(x) = 1/cosh2x,    l'(x) = cos(x)cosh(sin x),    m'(x) 
= (1 - (1/x2))/2n'(x) = 4x sinh(x2)cosh(x2)

to get a sphere?

I'll stick to modelers, thanks.

;-)


Oskar


Skip Talbot wrote:

>>Uh.. Isosurface... that's like, uh... Math, isn't it?
> 
> 
> Not much if its just a function like y for a plane + a pigment pattern.  :)
> 
> Skip
> 
>


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From: marty one
Subject: Re: spark
Date: 20 Jul 2004 20:45:00
Message: <web.40fdbbe17228149b28b8e2bf0@news.povray.org>
oskar bertrand <osk### [at] yahoocom> wrote:
> A portable battery operated Van De Tesla generator.  Also, quite a CPU
> cycle abyss.
>
> Oskar

could you please post the source.

Regards
Martin.


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From: oskar bertrand
Subject: Re: spark
Date: 21 Jul 2004 00:31:37
Message: <40fdf1a9@news.povray.org>
marty_one wrote:

> could you please post the source.


Nope.  Deleted a day or two after the image was posted.


Oskar


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