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> It should be possible to decrease the amount of memory required
> (divide it by 4). At the first iteration, since blok is a simple cube,
> balk is equivalent to a box { <0, 0, 0>, <5, 1, 1> } although it is
> done with 4 boxes.
I tried to make the code work like that, but it was more complex.
> Of course, this is only true so long as f is set to 1, with higher
> values the results won't look the same...
That is the problem indeed.
I might try to make it work anyway. It should be possible by making the
first "blok" a union of 8 box{0, <5,1,1>}. Then setting the level to 3
will - should :-) - have the same effect as the level 4 in the old file.
But I will do that tommorow since i need some sleep now.
Greetings,
JWV
BTW, thanks to all of you for all the replies!
news:40818b8d$1@news.povray.org...
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>
> JWV wrote:
> | The level-4 render was to much for my laptop :-(. It used 2GB of memory
> | while parsing, and it wasn't finished jet.
> |
> | I will post the source in p.b.sf if someone wants to give it a try on a
> | machine with a LOT of memory :-).
> |
> It should be possible to decrease the amount of memory required
> (divide it by 4). At the first iteration, since blok is a simple cube,
> balk is equivalent to a box { <0, 0, 0>, <5, 1, 1> } although it is
> done with 4 boxes. Even with that I don't have enough RAM to give it a
> try from what you're all saying ("only" 512M) but some of you might
> want to try it.
>
> Of course, this is only true so long as f is set to 1, with higher
> values the results won't look the same...
>
> Jerome
> - --
> ******************************
> * Jerome M. Berger *
> * mailto:jbe### [at] ifrance com *
> * http://jeberger.free.fr/ *
> ******************************
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-----BEGIN PGP SIGNED MESSAGE-----
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Here it is at recursion 4...
Jerome
- --
******************************
* Jerome M. Berger *
* mailto:jbe### [at] ifrancecom *
* http://jeberger.free.fr/ *
******************************
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Post a reply to this message
Attachments:
Download 'blok.jpg' (45 KB)
Preview of image 'blok.jpg'
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very cool!, but you turned of the reflection of the ground plane didn't you?
How long did it take to parse/render?
Greetings,
JWV
news:40826d9b@news.povray.org...
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> Here it is at recursion 4...
>
> Jerome
>
> - --
> ******************************
> * Jerome M. Berger *
> * mailto:jbe### [at] ifrancecom *
> * http://jeberger.free.fr/ *
> ******************************
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----
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-----BEGIN PGP SIGNED MESSAGE-----
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JWV wrote:
| How long did it take to parse/render?
|
Parse time: 19s
Render time: 3236s (~55mn)
The computer used is an Athlon XP 2700+ with 2x256M of RAM in dual
channel mode and 1GB of swap running linux mandrake 9.1 (kernel
upgraded to 2.4.22)
Jerome
- --
******************************
* Jerome M. Berger *
* mailto:jbe### [at] ifrancecom *
* http://jeberger.free.fr/ *
******************************
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Higher resolution version (1152x864) is at
http://jeberger.free.fr/tmp/blok.jpg
Render time was 28min????
Jerome
- --
******************************
* Jerome M. Berger *
* mailto:jbe### [at] ifrancecom *
* http://jeberger.free.fr/ *
******************************
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On Sat, 17 Apr 2004 19:27:53 +0200, JWV <jwv|at|planet.nl> wrote:
> Thanks for trying it! The level 4 scene should have about 48^4=5.308.416
> cubes. I am not sure how much memory is used for this amount, but it
> apears
> to be quite a lot.
There are ways to overcome such limitations and render fractals with
greater recursion depth. The most effective (in my experience) is to
generate a mesh (either externally or in POV-SDL) of the fractal at a
convenient depth, and then use that mesh as the low level building block
in the bigger fractal. The reduction in memory usage can be quite
dramatic. The important thing is to keep the total number of objects
within reasonable bounds. 48^4 cubes is a little much for POV-Ray to
handle; 48^2 or 48^3 mesh instances might work better. Unfortunately,
POV-Ray doesn't handle huge meshes very well, but you might be able to
reach level 5 (or more) that way.
---
FE
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On Mon, 19 Apr 2004 21:26:42 +0200, Fredrik Eriksson <noo### [at] nowherecom>
wrote:
> There are ways to overcome such limitations and render fractals with
> greater recursion depth. The most effective (in my experience) is to
> generate a mesh (either externally or in POV-SDL) of the fractal at a
> convenient depth, and then use that mesh as the low level building block
> in the bigger fractal. The reduction in memory usage can be quite
> dramatic. The important thing is to keep the total number of objects
> within reasonable bounds. 48^4 cubes is a little much for POV-Ray to
> handle; 48^2 or 48^3 mesh instances might work better. Unfortunately,
> POV-Ray doesn't handle huge meshes very well, but you might be able to
> reach level 5 (or more) that way.
Just to show that it's possible:
http://hem.bredband.net/b230591/povray/cubefractal5_2048.jpg (828 kB)
http://hem.bredband.net/b230591/povray/cubefractal6_4096.jpg (2.69 MB)
---
FE
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> Higher resolution version (1152x864) is at
> http://jeberger.free.fr/tmp/blok.jpg
>
> Render time was 28min????
Is that POV or Pixie?
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Fredrik Eriksson wrote:
> On Mon, 19 Apr 2004 21:26:42 +0200, Fredrik Eriksson <noo### [at] nowherecom>
> wrote:
<snip />
> Just to show that it's possible:
>
> http://hem.bredband.net/b230591/povray/cubefractal5_2048.jpg (828 kB)
> http://hem.bredband.net/b230591/povray/cubefractal6_4096.jpg (2.69 MB)
God bless recursion, every one in a one in a one in a one...
--
Respectfully,
Dan P
http://<broken link>
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| Is that POV or Pixie?
|
Both my renders were done with pixie...
Jerome
- --
******************************
* Jerome M. Berger *
* mailto:jbe### [at] ifrancecom *
* http://jeberger.free.fr/ *
******************************
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