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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] hotmail com
http://www.crosswinds.net/~tok/tokrays.html
Post a reply to this message
Attachments:
Download 'fibonacci02.jpg' (142 KB)
Preview of image 'fibonacci02.jpg'
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Tor Olav Kristensen wrote:
>
> 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.
This would look interesting if you embedded the blob in a wall and used
an image for pigmentation.. instant Fibonacci mosaic art.
-Xplo
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A very appropriate use of AntiBlobs!
--
Anton Sherwood -- br0### [at] p0b0xcom -- http://ogre.nu/
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Tor Olav Kristensen wrote:
>
> 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
Looks good for some ground paving, just add some sand between, maybe scale the
texture ...
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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Great...... could we perhaps see the source ? :-)
--
Ian
Inkwell: Ian's Homepage
http://www.topcities.com/cartoon/inkwell/index.htm
"Christoph Hormann" <Chr### [at] schunteretctu-bsde> wrote in
message news:39B4A105.AF460FEE@schunter.etc.tu-bs.de...
>
>
> Tor Olav Kristensen wrote:
> >
> > 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
>
> Looks good for some ground paving, just add some sand between, maybe scale
the
> texture ...
>
> Christoph
>
> --
> Christoph Hormann <chr### [at] gmxde>
> Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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This is a little bit off topic, but not too much since raytracing is all
about math.
Anyone interested in mathematics and/or the golden ratio and/or pi should
check out the film called "Pi". See http://www.pithemovie.com for more info
about it.
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Xplo Eristotle wrote:
> ...
> This would look interesting if you embedded the blob in a wall and used
> an image for pigmentation.. instant Fibonacci mosaic art.
I like that idea. Thanks.
I guess I need MegaPOV to that...
Or is it possible to read from an image file with
standard POV ?
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
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Anton Sherwood wrote:
> A very appropriate use of AntiBlobs!
=))
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
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Christoph Hormann wrote:
> ...
> Looks good for some ground paving,
I'll try to make a simple render with the camera
low and looking "horizontally" to see how that looks.
> just add some sand between,
Hmmm... I need to figure out how to make a
sand texture.
> maybe scale the texture ...
Up or down ?
Thank you for commenting
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
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Ian Witham wrote:
> Great...... could we perhaps see the source ? :-)
I'll try to post the code later today.
I'm not quite satisfied with the AntiBlobs macro yet.
For this image I replaced this line;
#local NStrB = (Trh - StrA*PowA)/PowB;
in the macro, with this line;
#local NStrB = -abs((StrA*PowA - Trh)/PowB);
But I have do some more math-thinking to see
if I can make this macro better.
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
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Richard Dault wrote:
> This is a little bit off topic, but not too much since raytracing is all
> about math.
>
> Anyone interested in mathematics and/or the golden ratio and/or pi should
> check out the film called "Pi". See http://www.pithemovie.com for more info
> about it.
I would like to see this film, but unfortunately I haven't
seen any advertisements for it here in Norway.
But maybe I can order a DVD-copy of it.
Thank you for the tip.
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
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Tor Olav Kristensen wrote:
>
[...]
>
> Hmmm... I need to figure out how to make a
> sand texture.
>
plane with some granite normal or ... isosurface ;-)
> > maybe scale the texture ...
>
> Up or down ?
>
down, but you can also leave it as it is.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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In article <39B517ED.F7229D48@online.no>, Tor Olav Kristensen
<tto### [at] onlineno> wrote:
> Or is it possible to read from an image file with
> standard POV ?
Not unless it is an ASCII format. However, you could position the blob
component at the origin, rotate an image map so the portion of the image
the blob will represent is also at the origin, and scale it up by a
large amount, so the whole component is a single color. Doing this, you
could make it *look* like each blob component has a solid color.
Using the eval_pigment() function would be much more elegant, though...
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Chris Huff wrote:
> In article <39B517ED.F7229D48@online.no>, Tor Olav Kristensen
> <tto### [at] onlineno> 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 ? =)
> However, you could position the blob
> component at the origin, rotate an image map so the portion of the image
> the blob will represent is also at the origin, and scale it up by a
> large amount, so the whole component is a single color. Doing this, you
> could make it *look* like each blob component has a solid color.
Great idea !
I have now tried this with an array of spheres. => See attached image.
Is this a well known technique ?
Now I have to go and try to use this on my antiblobs,
as Xplo Eristotle suggested.
> Using the eval_pigment() function would be much more elegant, though...
Yes, but .... :)
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
Post a reply to this message
Attachments:
Download 'imagemosaic01.jpg' (76 KB)
Preview of image 'imagemosaic01.jpg'
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Christoph Hormann wrote:
> Tor Olav Kristensen wrote:
> > Hmmm... I need to figure out how to make a
> > sand texture.
>
> plane with some granite normal or ... isosurface ;-)
NO! It can't be THAT simple. :-)
I was thinking too complicated then ...
> > > maybe scale the texture ...
> >
> > Up or down ?
> >
>
> down, but you can also leave it as it is.
Ok
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
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Tor Olav Kristensen wrote:
> ...
> I have now tried this with an array of spheres. => See attached image.
> ...
I used a part of the first image on this page:
http://www.wadhome.org/frazetta/overview0002.html
(Not really: Some years ago I scanned my Frazetta
poster-book with a monochrome scanner and added
pseudo colours to the image.)
If anyone is interested in the art of Frazetta, then here
are two links:
http://www.wadhome.org/frazetta/
http://www.frazettaartgallery.com/
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
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In article <39B561E7.BC0D7B11@online.no>, Tor Olav Kristensen
<tto### [at] onlineno> wrote:
> So I could read an uuencoded image then ? =)
An interesting idea...anyone want to write a uu-decoder in POV-Script?
:-)
> > component at the origin, rotate an image map so the portion of the image
Ouch, did I really write "rotate"? I meant "transform"...
> Is this a well known technique ?
If it is, I have not seen it...it was just something I thought of as I
was writing that the eval_pattern() patch was the only way to do it. :-)
I highly doubt I was the first to come up with this idea, though,
especially since there have been mosaiac images in the past using
official POV.
> > Using the eval_pigment() function would be much more elegant, though...
>
> Yes, but .... :)
But it requires a patched version of POV.
And if you want to do something to the objects themselves that depends
on the color, or if you want to make them light sources or something,
you do have to use eval_pigment().
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Chris Huff wrote:
>
> And if you want to do something to the objects themselves that depends
> on the color, or if you want to make them light sources or something,
> you do have to use eval_pigment().
Ha! I can see it now: Fibonacci mosaic glows.
-Xplo
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Tor Olav Kristensen wrote:
>
> Christoph Hormann wrote:
>
> > Tor Olav Kristensen wrote:
> > > Hmmm... I need to figure out how to make a
> > > sand texture.
> >
> > plane with some granite normal or ... isosurface ;-)
>
> NO! It can't be THAT simple. :-)
>
> I was thinking too complicated then ...
Nonsense. Making 600,000 tiny isosurfaces and tracing them onto a
surface is a GOOD idea. :P
-Xplo
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In article <39B5728A.54AE8936@unforgettable.com>,
inq### [at] unforgettablecom wrote:
> Ha! I can see it now: Fibonacci mosaic glows.
My version of the glow patch is based on MegaPOV, which has
eval_pigment(), so I didn't mention that. Though it would be a problem
with POV-AFX...
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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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.
Post a reply to this message
Attachments:
Download 'floor.jpg' (19 KB)
Preview of image 'floor.jpg'
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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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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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> > > 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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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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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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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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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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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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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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