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From: Tor Olav Kristensen
Subject: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 4 Jun 2003 22:56:07
Message: <Xns9391A9505351torolavkhotmailcom@204.213.191.226>
M.C.Escher's lithograph "Kubische ruimteverdeling" inspired
me to make this this image.

I'm not satisfied with the texture yet. Any suggestions ?


Here's an image of Eschers lithograph:

http://www.counterbalance.net/cqmedia/esch-body.html


Tor Olav


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Attachments:
Download 'IsoCubism15.jpg' (145 KB)

Preview of image 'IsoCubism15.jpg'
IsoCubism15.jpg


 

From:  Light Beam 
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 4 Jun 2003 23:14:21
Message: <3ede7d4d@news.povray.org>
Impressive... How do you made this "distortion" ? Are there mesh ou CSGs ?


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From: Tor Olav Kristensen
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 4 Jun 2003 23:41:12
Message: <Xns93911243CC6B9torolavkhotmailcom@204.213.191.226>
"_Light_Beam_" <s.f### [at] tiscalifr> wrote in
news:3ede7d4d@news.povray.org: 

> Impressive... How do you made this "distortion" ? Are there mesh ou
> CSGs ? 


Thanks.

It's an isosurface.

Here is a similar image I made (without the distortion):
http://news.povray.org/povray.binaries.images/13237/88607/

I used a function (built with a macro) to "distort" the isosurface.

The macro is named RotateXYZ_Function() and can be found in the
source code for the 4th image on my POV-Ray gallery page:
http://home.no/t-o-k/povray


Tor Olav


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From: Tor Olav Kristensen
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment - 1 attachment
Date: 5 Jun 2003 01:39:21
Message: <Xns93912641317B6torolavkhotmailcom@204.213.191.226>
Tor Olav Kristensen <tor_olav_kCURLYAhotmail.com> wrote in 
news:Xns### [at] 204213191226:

> 
> M.C.Escher's lithograph "Kubische ruimteverdeling" inspired
> me to make this this image.
> 
> I'm not satisfied with the texture yet.
...

After some post processing in ThumbsPlus,
the texture now looks like this.


Tor Olav


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Attachments:
Download 'IsoCubism15--.jpg' (164 KB)

Preview of image 'IsoCubism15--.jpg'
IsoCubism15--.jpg


 

From: JC (Exether)
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 5 Jun 2003 06:31:01
Message: <3EDEE3A5.4040003@spam.fr>
Real cool ! I should definitly think more about iso surfaces ...
For the texture you could try some sort of old unreflecting rusty metal.
Radiosity could also help have more visibility in the dark places.

How long does this image take to render ?

JC

Tor Olav Kristensen wrote:
> M.C.Escher's lithograph "Kubische ruimteverdeling" inspired
> me to make this this image.
> 
> I'm not satisfied with the texture yet. Any suggestions ?
> 
> 
> Here's an image of Eschers lithograph:
> 
> http://www.counterbalance.net/cqmedia/esch-body.html
> 
> 
> Tor Olav
> 
>


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From: Tor Olav Kristensen
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 5 Jun 2003 14:26:43
Message: <Xns9391A86D0DD7Etorolavkhotmailcom@204.213.191.226>
"JC (Exether)" <no### [at] spamfr> wrote in news:3ED### [at] spamfr:

> Real cool ! I should definitly think more about iso surfaces ...

Thank you.

Both the POV-Ray manual and Mike Williams' isosurface tutorial page:
http://www.econym.demon.co.uk/isotut
has much useful information about isosurfaces.


> For the texture you could try some sort of old unreflecting rusty metal.

Good idea. I'm not good with textures, so I'll think a while about
how to do that.


> Radiosity could also help have more visibility in the dark places.
> 
> How long does this image take to render ?


It took about 6 hours to render on my 2GHz Athlon PC. - So it will be
a very painful process to experiment with radiosity in this scene.


Tor Olav


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From: sascha
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 5 Jun 2003 17:40:35
Message: <3edf8093@news.povray.org>
I like this one!

 > For the texture you could try some sort of old unreflecting rusty metal.

Yes, I had the same thought - maybe using some blurry reflection (takes 
awfully long to render) and some rusty spots.

An animated one would be cool...

-sascha

JC (Exether) wrote:
> Real cool ! I should definitly think more about iso surfaces ...
> For the texture you could try some sort of old unreflecting rusty metal.
> Radiosity could also help have more visibility in the dark places.
> 
> How long does this image take to render ?
> 
> JC
> 
> Tor Olav Kristensen wrote:
> 
>> M.C.Escher's lithograph "Kubische ruimteverdeling" inspired
>> me to make this this image.
>>
>> I'm not satisfied with the texture yet. Any suggestions ?
>>
>>
>> Here's an image of Eschers lithograph:
>>
>> http://www.counterbalance.net/cqmedia/esch-body.html
>>
>>
>> Tor Olav
>>
>>
> 
>


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From: Xilo Musimene
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 6 Jun 2003 00:35:40
Message: <3EDFE1DB.3080005@hotpop.com>
> M.C.Escher's lithograph "Kubische ruimteverdeling" inspired
> me to make this this image.
> 
> I'm not satisfied with the texture yet. Any suggestions ?

Stunned me totally!

I tried in the past to do the same kind of thing, a movie and made the 
sticks in deformed motion like your picture, but I used simple cylinders 
and a special lens over my camera to distort the cylinders, needless to 
say it was much less perfect that yours!  10 points for you! ;)

BTW, I think the texture is fine, have you thought on adding IOR or 
reflection?  If so, then I would suggest scaling the texture and 
possibly make the texture the normal texture (though I wonder if it 
affects reflection and IOR as it should).

Good work!

I wish I could understand isosurfaces as you do!

Xilo

-- 
Dedicated to audio/visual and interactive artwork.
http://www.geocities.com/simonlemieux/


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From: Tor Olav Kristensen
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 7 Jun 2003 02:57:17
Message: <Xns9393338AFB5A7torolavkhotmailcom@204.213.191.226>
sascha <sas### [at] userssourceforgenet> wrote in
news:3edf8093@news.povray.org: 

...
> > For the texture you could try some sort of old unreflecting rusty
> > metal. 
> 
> Yes, I had the same thought - maybe using some blurry reflection
> (takes awfully long to render) and some rusty spots.

I'm trying to make a rusty texture, but I'm not very successful at it.


> An animated one would be cool...


I think so too, but currently it takes about 6 hours per frame to
render, so I think that I'll have to wait a couple of years for that
to be doable. (Maybe when I get my first 10 GHz PC)

=(


Tor Olav


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From: Tor Olav Kristensen
Subject: Re: The Cubic Space Division experiences an earthquake - 1 attachment
Date: 7 Jun 2003 03:07:28
Message: <Xns9393354507B9Ftorolavkhotmailcom@204.213.191.226>
Xilo Musimene <xil### [at] hotpopcom> wrote in 
news:3ED### [at] hotpopcom:

...
> Stunned me totally!
> 
> I tried in the past to do the same kind of thing, a movie and made the 
> sticks in deformed motion like your picture, but I used simple cylinders 
> and a special lens over my camera to distort the cylinders, needless to 
> say it was much less perfect that yours!  10 points for you! ;)
> 
> BTW, I think the texture is fine, have you thought on adding IOR or 
> reflection?  If so, then I would suggest scaling the texture and 
> possibly make the texture the normal texture (though I wonder if it 
> affects reflection and IOR as it should).
> 
> Good work!
> 
> I wish I could understand isosurfaces as you do!


Thank you very much !

I'm currently trying to make a rusty and a little bit reflective metal
texture. Some "normals" are already present in the isosurface itself
(It is displaced by the same pattern that controls the pigment.), so
maybe I should increase the displacement instead of adding normals to
the texture (?)


Tor Olav


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