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Hello everyone,
Here is a cellular automata simulation I created in POV. It's a very
common version that you see everywhere, but I thought it would look nice
as a shell. I wasn't striving for realism, though to figure out a way to
make an actual shell would be nice :)
The CA sim is a long strip. An array was used to store two levels of
cell history. The spheres comprising the shell hold the entire history
of the sim.
Questions and comments are welcome, as always~
Sam
Post a reply to this message
Attachments:
Download 'lbtest7_19.jpg' (131 KB)
Preview of image 'lbtest7_19.jpg'
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"stbenge" <^@hotmail.com> wrote in message news:49d00e5a@news.povray.org...
> Hello everyone,
>
> Here is a cellular automata simulation I created in POV. It's a very
> common version that you see everywhere, but I thought it would look nice
> as a shell. I wasn't striving for realism, though to figure out a way to
> make an actual shell would be nice :)
>
> The CA sim is a long strip. An array was used to store two levels of
> cell history. The spheres comprising the shell hold the entire history
> of the sim.
>
> Questions and comments are welcome, as always~
>
> Sam
Thats pretty hardcore man!
That would make a nice v3.7 sample scene...imo...
ian
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Friggin' jawdropping awesome as usual. I also enjoy the soft lighting very much
in this one.
I won't even ask the mindblowing details even though it's probably just a couple
of meta-recursive functions in the hyperquadric domain. It's sunday.
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Just wow.
Do I understand correctly that the shell shape itself
is not related to the CA simulation, i.e. no 3D growth?
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[GDS|Entropy] wrote:
> Thats pretty hardcore man!
>
> That would make a nice v3.7 sample scene...imo...
Thanks Ian!
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nemesis wrote:
> Friggin' jawdropping awesome as usual. I also enjoy the soft lighting very much
> in this one.
thanks :)
> I won't even ask the mindblowing details even though it's probably just a couple
> of meta-recursive functions in the hyperquadric domain. It's sunday.
It's actually not that bad.
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Christian Froeschlin wrote:
> Just wow.
>
> Do I understand correctly that the shell shape itself
> is not related to the CA simulation, i.e. no 3D growth?
Right Christian. The shell's shape is independent from the CA sim. I
could have displaced the spheres according to the CA data, but that
would have involved compensating for the holes caused by the
displacement. Details would have been lost.
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stbenge <^@hotmail.com> wrote:
> Questions and comments are welcome, as always~
My, that's purdie!
Tried this as a blob?
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"[GDS|Entropy]" <gds-entropy AT hotmail DOT com> wrote:
> Thats pretty hardcore man!
Is that "pretty hardcore, man!", or "pretty, hardcore man!"? ;)
Well, true enough either way...
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clipka wrote:
> stbenge <^@hotmail.com> wrote:
>> Questions and comments are welcome, as always~
>
> My, that's purdie!
>
> Tried this as a blob?
Thanks.
Sure, I thought about it. I don't like to think of what the render time
would be though. I might give it a shot, for another object perhaps.
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[speechless]
Thomas
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stbenge <^@hotmail.com> wrote:
> Here is a cellular automata simulation I created in POV. It's a very
> common version that you see everywhere, but I thought it would look nice
> as a shell. I wasn't striving for realism, though to figure out a way to
> make an actual shell would be nice :)
Beautiful.
I've wondered before about ways to realistically texture mollusc shells, and
this appears to be it! It might not even be too far from how it actually
happens in reality.
I too would be interested to see a blob version.
Bill
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Oooh.
Beautiful both the image and the concept.
;-)
Paolo
>stbenge on date 30/03/2009 02:11 wrote:
> Hello everyone,
>
> Here is a cellular automata simulation I created in POV. It's a very
> common version that you see everywhere, but I thought it would look nice
> as a shell. I wasn't striving for realism, though to figure out a way to
> make an actual shell would be nice :)
>
> The CA sim is a long strip. An array was used to store two levels of
> cell history. The spheres comprising the shell hold the entire history
> of the sim.
>
> Questions and comments are welcome, as always~
>
> Sam
>
> ------------------------------------------------------------------------
>
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stbenge <^@hotmail.com> wrote:
> clipka wrote:
> > stbenge <^@hotmail.com> wrote:
> >> Questions and comments are welcome, as always~
> >
> > My, that's purdie!
> >
> > Tried this as a blob?
>
> Thanks.
>
> Sure, I thought about it. I don't like to think of what the render time
> would be though. I might give it a shot, for another object perhaps.
Actually, I recently replaced several thousands of randomly placed spheres in
some scene with blobs, not for "blobification" but just for speedup. Seems like
the internal bounding of blobs is significantly more effective than the standard
boxing approach.
But that may also differ depending on other circumstances; for instance, those
spheres were scattered quite sparsely about, so the main load was not to
compute intersection points, but to verify that no intersection points had to
be computed in the first place.
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stbenge wrote:
> Questions and comments are welcome, as always~
Wolfram, move over. Very pretty.
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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stbenge wrote:
I remember a time when I actually understood what you were doing.
You always seem to arrive at these things so casually. Like you back
into the discovery while doing something else.
Intriguing in the possibilities hinted at. Could 'Cellular Automata' be
implemented as a POV procedural pattern?
Could the building blocks be actual building blocks, like bricks or
something?
-Jim
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Thomas de Groot wrote:
> [speechless]
>
> Thomas
>
:)
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Bill Pragnell wrote:
> stbenge <^@hotmail.com> wrote:
>> Here is a cellular automata simulation I created in POV. It's a very
>> common version that you see everywhere, but I thought it would look nice
>> as a shell. I wasn't striving for realism, though to figure out a way to
>> make an actual shell would be nice :)
>
> Beautiful.
>
> I've wondered before about ways to realistically texture mollusc shells, and
> this appears to be it! It might not even be too far from how it actually
> happens in reality.
I sometimes wonder how certain shells have come to have such patterns on
them. There is one CA sim based on Pascal's triangle which produces
Sierpinki-esqu patterns, and I have seen something strikingly similar on
a real shell. How does it happen?
> I too would be interested to see a blob version.
It might just happen :)
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Paolo Gibellini wrote:
> Oooh.
> Beautiful both the image and the concept.
> ;-)
> Paolo
Thank you Paolo!
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Darren New wrote:
> stbenge wrote:
>> Questions and comments are welcome, as always~
>
> Wolfram, move over.
I know you must be kidding.
> Very pretty.
Thanks :)
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Jim Charter wrote:
> stbenge wrote:
>
> I remember a time when I actually understood what you were doing.
It's as easy as Pascal's triangle, and only gets better from there.
> You always seem to arrive at these things so casually. Like you back
> into the discovery while doing something else.
Sometimes that is the case. This time I had made the discoveries some
time ago, but never put them together to produce an image like this one.
> Intriguing in the possibilities hinted at. Could 'Cellular Automata' be
> implemented as a POV procedural pattern?
I know it can, because I managed to do it. Attached is an example of the
pattern so far. This is just one of many possibilities. This particular
image exhibits the pattern's ability to exceed POV's 256 entry limit for
the color_map function. I can exceed that number vertically, but not
horizontally, for to do so might eat too much memory. I can make really
long strips with this, a total of 255*128 cells. This one, stretched
out, would be only four times its current height. Rendering the full
length version caused my computer to start swapping the hard drive
earlier today.
> Could the building blocks be actual building blocks, like bricks or
> something?
Yes. To make it "physical" you could use inside() tests to check space
for previously placed cells. By doing this you could break free of the
usual grid restraints.
Sam
Post a reply to this message
Attachments:
Download 'capattern0_31.jpg' (154 KB)
Preview of image 'capattern0_31.jpg'
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I don't think I've seen anything like this in p.b.i--it's so different and
beautiful that it seems like a 'new direction' for POV-Ray. This has "Hall of
Fame" written all over it. I can't begin to imagine how you accomplished such a
work of art; it's sublime, and transcends technique.
KW
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Kenneth wrote:
> I don't think I've seen anything like this in p.b.i--it's so different and
> beautiful that it seems like a 'new direction' for POV-Ray. This has "Hall of
> Fame" written all over it. I can't begin to imagine how you accomplished such a
> work of art; it's sublime, and transcends technique.
>
> KW
>
ANKOS - A New Kind Of Shell :)
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stbenge wrote:
> How does it happen?
Probably something like a CA, only implemented in biological chemistry.
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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stbenge <^@hotmail.com> wrote:
> I sometimes wonder how certain shells have come to have such patterns on
> them. There is one CA sim based on Pascal's triangle which produces
> Sierpinki-esqu patterns, and I have seen something strikingly similar on
> a real shell. How does it happen?
Well, is it any surprise that organisms comprised of cells exhibit some
"cellular automaton" behavior? ;)
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"Paul Fuller" <pgf### [at] optusnet comau> a écrit dans le message de news:
49d1f499$1@news.povray.org...
> Kenneth wrote:
>> I don't think I've seen anything like this in p.b.i--it's so different
>> and
>> beautiful that it seems like a 'new direction' for POV-Ray. This has
>> "Hall of
>> Fame" written all over it. I can't begin to imagine how you accomplished
>> such a
>> work of art; it's sublime, and transcends technique.
>>
>> KW
>>
>
> ANKOS - A New Kind Of Shell :)
YAANA - Yet Again A New Acronym ;)
Marc
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On Tue, 31 Mar 2009 13:00:53 EDT, "clipka" <nomail@nomail> wrote:
>stbenge <^@hotmail.com> wrote:
>> I sometimes wonder how certain shells have come to have such patterns on
>> them. There is one CA sim based on Pascal's triangle which produces
>> Sierpinki-esqu patterns, and I have seen something strikingly similar on
>> a real shell. How does it happen?
>
>Well, is it any surprise that organisms comprised of cells exhibit some
>"cellular automaton" behavior? ;)
>
>
To quote from
http://www.sciencedaily.com/releases/2006/11/061126121128.htm
Biology reveals that the shape and colour patterns on the shell of the
mollusc mirror the localised expression of specific genes in the
mantle, a layer of skin situated just below the shell.
For rendering shells in POV you could look at http://www.shelly.de/
I have not tried this program though.
The isosurface tutorial has some renderings
http://www.econym.demon.co.uk/isotut/shells.htm
I am sure i saw an article some time ago that gave equations enabled
you to draw the patterns of actual shell colourings but cannot
remember where that was.
John
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"m_a_r_c" <jac### [at] wanadoofr> wrote:
> > ANKOS - A New Kind Of Shell :)
>
> YAANA - Yet Again A New Acronym ;)
A case for the AAAAA - American Association Against Acronym Abuse...
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m_a_r_c wrote:
> "Paul Fuller" <pgf### [at] optusnetcomau> a écrit dans le message de news:
> 49d1f499$1@news.povray.org...
>> Kenneth wrote:
>>> I don't think I've seen anything like this in p.b.i--it's so different
>>> and
>>> beautiful that it seems like a 'new direction' for POV-Ray. This has
>>> "Hall of
>>> Fame" written all over it. I can't begin to imagine how you accomplished
>>> such a
>>> work of art; it's sublime, and transcends technique.
>>>
>>> KW
>>>
>> ANKOS - A New Kind Of Shell :)
>
> YAANA - Yet Again A New Acronym ;)
>
> Marc
>
>
Well I didn't coin it - just adapted it from Mr Wolfram and his CA opus
"A New Kind Of Science".
Paul
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clipka nous illumina en ce 2009-04-01 05:11 -->
> "m_a_r_c" <jac### [at] wanadoofr> wrote:
>>> ANKOS - A New Kind Of Shell :)
>> YAANA - Yet Again A New Acronym ;)
>
> A case for the AAAAA - American Association Against Acronym Abuse...
>
>
It's AAAAAAA - American Association Against Acronims Abuse And Ambiguity.
--
Alain
-------------------------------------------------
Sometimes my love of the arcane combines with my askew humor to make me
unintelligible!!
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Kenneth wrote:
> I don't think I've seen anything like this in p.b.i--it's so different and
> beautiful that it seems like a 'new direction' for POV-Ray. This has "Hall of
> Fame" written all over it. I can't begin to imagine how you accomplished such a
> work of art; it's sublime, and transcends technique.
Thank you for the kind words, KW
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