POV-Ray : Newsgroups : povray.general : Another fractal question. Server Time
16 Nov 2024 23:19:07 EST (-0500)
  Another fractal question. (Message 1 to 4 of 4)  
From: mcavoys
Subject: Another fractal question.
Date: 28 Jul 2003 16:23:03
Message: <3f258603.120181051@news.povray.org>
Does anyone have any ideas how to generate IFS fractals in Povray.

Regards
        Stephen


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From: Luke
Subject: Re: Another fractal question.
Date: 29 Jul 2003 04:54:44
Message: <3f263654$1@news.povray.org>
<mca### [at] aolcom (S McAvoy)> wrote in message
news:3f258603.120181051@news.povray.org...
> Does anyone have any ideas how to generate IFS fractals in Povray.

Yup - but only really easy ones. I had a go at it the week before last -
basically by following the fractint docs.
The method goes something like:

Get an array of transformations.
Choose a starting point.
Pick a transformation at random from your list.
Transform your point.
Place a sphere (or for added fun, blob component) at your new point.
Pick a transformation at random from your list.
Transform your point.
...why don't you fill in the rest yourself?

I made a nice Sierpinski style Swiss cheese thing with this method. I would
have posted some pics, but I got sidetracked by other stuff in fractint
(isn't it great?), and forgot about it.
I can post code for the above once I've found where I left it. Would that be
ok?

-Luke


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From: mcavoys
Subject: Re: Another fractal question.
Date: 29 Jul 2003 05:10:58
Message: <3f2639f8.7141899@news.povray.org>
On Tue, 29 Jul 2003 09:52:00 +0100, "Luke" <Luk### [at] hotmailcom> wrote:

>I made a nice Sierpinski style Swiss cheese thing with this method. I would
>have posted some pics, but I got sidetracked by other stuff in fractint
>(isn't it great?), and forgot about it.

Yes, it is great. It does not run too well on my XP machine, video driver aren't
too clever and it's slow in a DOS box. I was thinking about doing something with
IFS's generated with IFSSPELL

>I can post code for the above once I've found where I left it. Would that be
>ok?

Yes that would be great. It would give me a starting point.


Regards
        Stephen


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From: Luke
Subject: Re: Another fractal question.
Date: 29 Jul 2003 06:14:47
Message: <3f264917$1@news.povray.org>
> Yes, it is great. It does not run too well on my XP machine, video driver
aren't
> too clever and it's slow in a DOS box. I was thinking about doing
something with
> IFS's generated with IFSSPELL

I have to boot from a rescue disk before it works at all, but it's almost as
much fun trying to figure out the docs, then implement the stuff in pov.
I've kind of got inverse-julias working in quaternion space. The
relationship with povray's julia_fractals isn't as close as I'd hoped, but
they're still pretty nifty. Maybe I'll share something one day :)

> >I can post code for the above once I've found where I left it. Would that
be
> >ok?
>
> Yes that would be great. It would give me a starting point.

It's on text.scene-files
not very complete I'm afraid, but I hope it's some use.

All the best,
Luke.


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