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From: St 
Subject: Lichtenberg figure...
Date: 18 Sep 2006 12:39:50
Message: <450ecbd6@news.povray.org>
Ok, it's not looking like one now, but the nearsest I could get to it was to 
use a tree from PoV-Tree - which kind of works... (Would you believe that 
little T_Glass2 tree is 119Mb?!)  :oO

 My dad used to make these when he worked at Vickers Armstrong (as it was 
known in the late 60's), and painted the back black on a rectangular 
version, (looked good) and then stuck them on the mantle-piece at home. 
Sadly, I don't have any of them.

  Anyway, is there some function that will achieve the desired effect? I 
guess something like a lightning function would do it.

   ~Steve~


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From: Orchid XP v3
Subject: Re: Lichtenberg figure...
Date: 18 Sep 2006 14:59:32
Message: <450eec94$1@news.povray.org>
That is pretty neat tho...


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From: St 
Subject: Re: Lichtenberg figure...
Date: 18 Sep 2006 18:07:22
Message: <450f189a@news.povray.org>
"Orchid XP v3" <voi### [at] devnull> wrote in message 
news:450eec94$1@news.povray.org...
> That is pretty neat tho...

   Hey, thanks Mr. A. I want to get it as close to the attached as I can. 
Any idea's?

     ~Steve~


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From: Orchid XP v3
Subject: Re: Lichtenberg figure...
Date: 19 Sep 2006 14:02:58
Message: <451030d2$1@news.povray.org>
>> That is pretty neat tho...
> 
>    Hey, thanks Mr. A. I want to get it as close to the attached as I can. 
> Any idea's?

It's pretty close already... I think to get closer, you're going to have 
to use some kind of fractal algorithm. Maybe acretion-based, I'm not 
sure. Hmm...


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From: St 
Subject: Re: Lichtenberg figure...
Date: 19 Sep 2006 14:48:24
Message: <45103b78@news.povray.org>
"Orchid XP v3" <voi### [at] devnull> wrote in message 
news:451030d2$1@news.povray.org...
>>> That is pretty neat tho...
>>
>>    Hey, thanks Mr. A. I want to get it as close to the attached as I can. 
>> Any idea's?
>
> It's pretty close already... I think to get closer, you're going to have 
> to use some kind of fractal algorithm. Maybe acretion-based, I'm not sure. 
> Hmm...

    What a great idea! Didn't think of that! Thanks Andrew. Hmm, ok, so how 
do I start with this idea?

      ~Steve~


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From: Jim Charter
Subject: Re: Lichtenberg figure...
Date: 19 Sep 2006 23:26:10
Message: <4510b4d2$1@news.povray.org>
St. wrote:

>   Anyway, is there some function that will achieve the desired effect? I 
> guess something like a lightning function would do it.
> 

The problem, especially the feathery look, makes me think of some of 
Paul Bourke's experiments:
http://local.wasp.uwa.edu.au/~pbourke/fractals/dla3d/


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From: Thomas de Groot
Subject: Re: Lichtenberg figure...
Date: 20 Sep 2006 03:42:56
Message: <4510f100$1@news.povray.org>
"Jim Charter" <jrc### [at] msncom> schreef in bericht 
news:4510b4d2$1@news.povray.org...
>
> The problem, especially the feathery look, makes me think of some of Paul 
> Bourke's experiments:
> http://local.wasp.uwa.edu.au/~pbourke/fractals/dla3d/

Yes, that came too to my mind. A pity it is not available for Windows, 
though...

Thomas


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From: St 
Subject: Re: Lichtenberg figure...
Date: 22 Sep 2006 14:43:40
Message: <45142edc$1@news.povray.org>
"Jim Charter" <jrc### [at] msncom> wrote in message 
news:4510b4d2$1@news.povray.org...
> St. wrote:
>
>>   Anyway, is there some function that will achieve the desired effect? I 
>> guess something like a lightning function would do it.
>>
>
> The problem, especially the feathery look, makes me think of some of Paul 
> Bourke's experiments:
> http://local.wasp.uwa.edu.au/~pbourke/fractals/dla3d/

    You're quite right. Thanks Jim. (That page loaded SO much faster than 
when I tried it the other day!)  ;)

    The fifth one down, right-hand side, looks like it would do the job well 
with a longer container cylinder. Maybe Paul will work on a win version one 
day.

     ~Steve~


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From: Kenneth
Subject: Re: Lichtenberg figure...
Date: 27 Sep 2006 04:30:00
Message: <web.451a3641401eb74c8438e760@news.povray.org>
"Thomas de Groot" <t.d### [at] internlnet> wrote:
> "Jim Charter" <jrc### [at] msncom> schreef in bericht
> news:4510b4d2$1@news.povray.org...
> >
> > The problem, especially the feathery look, makes me think of some of Paul
> > Bourke's experiments:
> > http://local.wasp.uwa.edu.au/~pbourke/fractals/dla3d/
>
> Yes, that came too to my mind...

Yeah, me too. (I happened to be looking at that page for the first time just
last night.) Some VERY interesting shapes and ideas there.

Ken


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From: Kenneth
Subject: Re: Lichtenberg figure...
Date: 27 Sep 2006 04:40:00
Message: <web.451a3888401eb74c8438e760@news.povray.org>
"St." <dot### [at] dotcom> wrote:

>
>     You're quite right. Thanks Jim. (That page loaded SO much faster than
> when I tried it the other day!)  ;)
>

BTW, here's a (quick-loading!) link to the technical paper he wrote on the
subject.

http://local.wasp.uwa.edu.au/~pbourke/papers/dla3d/

Ken


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