POV-Ray : Newsgroups : povray.binaries.images : Fibonacci Stones (142KB) Server Time
29 Mar 2024 05:25:17 EDT (-0400)
  Fibonacci Stones (142KB) (Message 21 to 30 of 30)  
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From: Ian Witham
Subject: Re: Fibonacci Stones (142KB)
Date: 5 Sep 2000 20:08:26
Message: <39b58afa@news.povray.org>
Here's my own attempt at a Fibonacci antoblob floor... I got tired of
waiting and made my own source ;-) I don't fully understand how to do it but
I'd like to have larger gaps between the tiles.


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Attachments:
Download 'floor.jpg' (19 KB)

Preview of image 'floor.jpg'
floor.jpg


 

From: Tor Olav Kristensen
Subject: Re: Fibonacci Stones (142KB)
Date: 5 Sep 2000 21:24:58
Message: <39B59BA5.15ECE20D@online.no>
Tor Olav Kristensen wrote:

> Ian Witham wrote:
>
> > Great...... could we perhaps see the source ? :-)
>
> I'll try to post the code later today.

It's not TODAY longer, but I posted it to p.t.s-f anyway :)

Here it is:
news://news.povray.org/39B59A50.66F1BAA7%40online.no


Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html


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From: Tor Olav Kristensen
Subject: Re: Fibonacci Stones (142KB)
Date: 5 Sep 2000 21:29:20
Message: <39B59CA4.BDC6D1E8@online.no>
Ian Witham wrote:

> Here's my own attempt at a Fibonacci antoblob floor...

I like this floor !
=)
Please post another image if you improve it.


> I got tired of waiting and made my own source ;-)

Sorry. I got so excited about Chris' and Xplo's suggestions.


> I don't fully understand how to do it but
> I'd like to have larger gaps between the tiles.

If you look at the source code I just posted,
you will find a comment I made in the code
that shows how to move them a little bit apart.


Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html


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From: PoD
Subject: Re: Fibonacci Stones -> Mosaic image (75KB)
Date: 6 Sep 2000 12:59:02
Message: <39B677C7.A9D822DB@merlin.net.au>
> > > Or is it possible to read from an image file with
> > > standard POV ?
> >
> > Not unless it is an ASCII format.

> So I could read an uuencoded image then ? =)

I've done this by saving the image imn ppm format.
Then search/replace space with comma (POV needs commas between values)
and stripping the header except the dimensions (it's handy to leave
these in).
Now you can read it with POV.

PoD.


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From: Alf Peake
Subject: Re: Fibonacci Stones (142KB)
Date: 7 Sep 2000 17:08:47
Message: <39b803df@news.povray.org>
I like that one Tor. I'm jealous.
Now, if you scale the blobs larger as they move outwards, and increase
distance from center after each blob, pow(radius,??), then this would
be what I would have liked to achieve.  I can do this with spheres but
your antiblobs would give a more realistic result and avoids the
spheres intersecting :)
I must find time to play with your AntiBlob macro.

Alf


Tor Olav Kristensen <tto### [at] onlineno> wrote in message
news:39B44A76.2ECBA98A@online.no...
>
> For this image I used some of Alf Peak's code in his post
> "Golden Ratio" to p.t.s-f  31. Aug;
> (news://news.povray.org/39ad9be0%40news.povray.org)
> in combination with my AntiBlobs macro.
>
> Comments are welcome.
>
>
> Tor Olav
> --
> mailto:tor### [at] hotmailcom
> http://www.crosswinds.net/~tok/tokrays.html
>
>


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From: Tor Olav Kristensen
Subject: Re: Fibonacci Stones (142KB)
Date: 7 Sep 2000 19:34:52
Message: <39B824DB.21B298CA@online.no>
Alf Peake wrote:

> I like that one Tor. I'm jealous.

Thank you. - And I'm glad you are jealous =)


> Now, if you scale the blobs larger as they move outwards, and increase
> distance from center after each blob, pow(radius,??), then this would
> be what I would have liked to achieve.

Maybe I need to have a look at your code once
more, because I'm not sure if I understand correctly
what you describe above.


> I can do this with spheres but your antiblobs would give a more
> realistic
> result and avoids the spheres intersecting :)
> I must find time to play with your AntiBlob macro.

Have fun !

(The math in this macro may need some adjusting,
and I'll look into that a day when I'm in math-mode. :)


Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html


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From: Tor Olav Kristensen
Subject: Re: Fibonacci Stones -> Mosaic image (75KB)
Date: 7 Sep 2000 20:54:10
Message: <39B83768.BE863064@online.no>
PoD wrote:

> > > > Or is it possible to read from an image file with
> > > > standard POV ?
> > >
> > > Not unless it is an ASCII format.
>
> > So I could read an uuencoded image then ? =)
>
> I've done this by saving the image imn ppm format.
> Then search/replace space with comma (POV needs commas between values)
> and stripping the header except the dimensions (it's handy to leave
> these in).
> Now you can read it with POV.

Can you please tell me where can I find appropriate
information about the ppm format ?
(I.e. Info about structure of the header- and colour-
information.)

And is there any "free" programs that can convert to
this format ?


Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html


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From: Chris Huff
Subject: Re: Fibonacci Stones -> Mosaic image (75KB)
Date: 7 Sep 2000 22:15:44
Message: <chrishuff-2AC365.21172907092000@news.povray.org>
In article <39B83768.BE863064@online.no>, Tor Olav Kristensen 
<tto### [at] onlineno> wrote:

> Can you please tell me where can I find appropriate
> information about the ppm format ?
> (I.e. Info about structure of the header- and colour-
> information.)

Try:
http://www.wotsit.org/search.asp?page=8&s=graphics


> And is there any "free" programs that can convert to
> this format ?

Free as in price or philosophy?

Free or low in price:
POV-Ray. :-)
GraphicConverter(not free, though nicely priced shareware, Mac only).

I don't know of any others, though that is mostly because I have never 
used the format. Programs that use QuickTime can *read* it with no 
problem...

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

<><


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From: Ron Parker
Subject: Re: Fibonacci Stones -> Mosaic image (75KB)
Date: 8 Sep 2000 10:41:54
Message: <slrn8rhve5.19a.ron.parker@fwi.com>
On Thu, 07 Sep 2000 21:17:29 -0500, Chris Huff wrote:
>In article <39B83768.BE863064@online.no>, Tor Olav Kristensen 
><tto### [at] onlineno> wrote:
>
>> Can you please tell me where can I find appropriate
>> information about the ppm format ?
>> (I.e. Info about structure of the header- and colour-
>> information.)
>
>Try:
>http://www.wotsit.org/search.asp?page=8&s=graphics
>
>
>> And is there any "free" programs that can convert to
>> this format ?
>
>Free as in price or philosophy?
>
>Free or low in price:
>POV-Ray. :-)
>GraphicConverter(not free, though nicely priced shareware, Mac only).
>
>I don't know of any others, though that is mostly because I have never 
>used the format. Programs that use QuickTime can *read* it with no 
>problem...

netpbm, the programs that introduced the format in the first place.

-- 
Ron Parker   http://www2.fwi.com/~parkerr/traces.html
My opinions.  Mine.  Not anyone else's.


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From: Alf Peake
Subject: Re: Fibonacci Stones (142KB)
Date: 9 Sep 2000 06:42:30
Message: <39ba1416@news.povray.org>
Tor Olav Kristensen <tto### [at] onlineno> wrote in message
news:39B824DB.21B298CA@online.no...
>
> Alf Peake wrote:
>
> > Now, if you scale the blobs larger as they move outwards, and
increase
> > distance from center after each blob, pow(radius,??), then this
would
> > be what I would have liked to achieve.
>
> Maybe I need to have a look at your code once
> more, because I'm not sure if I understand correctly
> what you describe above.
>

In my p.t.s-f post replace constant size spheres:
  sphere{ z*Rad, 0.1 rotate y*Count*Inc }
with spheres of increasing size:
  sphere{ z*pow(Rad,1.4), Rad/16+0.055 rotate y*Count*Inc }

( You can delete the blob and bounding sections)

Alf


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