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Just something that I thought up while watching
TV the other week. There are no light sources in this
scene. Each candle flame is made up of two glows.
Radiosity settings were based on a post by Gilles Tran
and adjusted until the picture looked good
Render time : 4 hrs 5 min on a PIII 450.
Gail
--
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* gsh### [at] monotix coza * System.dat not found. *
* http://www.rucus.ru.ac.za/~gail/ * Reformat hard drive Y)es O)k *
********************************************************************
* If at first you don't succeed, call it version 1.0 *
********************************************************************
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Attachments:
Download 'Church.jpg' (50 KB)
Preview of image 'Church.jpg'
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Nice warm look to it.
Odd shadow at the back, lower left. Doesn't seem to relate to anything.
Also some strange places around the windows, among other things. Was
error_bound way down? <0.3, or not?
Only just this morning I tried radiosity with glows in the scene but I left
the lights so I couldn't be sure of any differences. I'll have to give the
glow-only thing a try too.
Bob
Post a reply to this message
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Bob Hughes <per### [at] aolcom?subject=PoV-News:> wrote in message
news:39d86047@news.povray.org...
> Nice warm look to it.
> Odd shadow at the back, lower left. Doesn't seem to relate to anything.
I noticed that while it was rendering. Haven't a clue where that could be
coming from
There's also a shadow on the left wall with no source that I can tell.
> Also some strange places around the windows, among other things. Was
> error_bound way down? <0.3, or not?
Error bound was 1. I'm not too familiar with radiosity so I tweaked til it
looked good.
> Only just this morning I tried radiosity with glows in the scene but I
left
> the lights so I couldn't be sure of any differences. I'll have to give
the
> glow-only thing a try too.
>
I had a light source for quite a while, but removed it as it didn't help
the feel of the scene.
Gail
--
********************************************************************
* gsh### [at] monotixcoza * System.dat not found. *
* http://www.rucus.ru.ac.za/~gail/ * Reformat hard drive Y)es O)k *
********************************************************************
* If at first you don't succeed, call it version 1.0 *
********************************************************************
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Gail Shaw <gsh### [at] monotixcoza> wrote in message
news:39d85dd4@news.povray.org...
> Just something that I thought up while watching
> TV the other week. There are no light sources in this
> scene. Each candle flame is made up of two glows.
>
The glass in the windows has a bumps normal. I was trying
for an old glass look. Think I'll remove the normal as it looks wierd.
Gail
--
********************************************************************
* gsh### [at] monotixcoza * System.dat not found. *
* http://www.rucus.ru.ac.za/~gail/ * Reformat hard drive Y)es O)k *
********************************************************************
* If at first you don't succeed, call it version 1.0 *
********************************************************************
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"Gail Shaw" <gsh### [at] monotixcoza> wrote in message
news:39d86528@news.povray.org...
>
> Bob Hughes <per### [at] aolcom?subject=PoV-News:> wrote in message
> news:39d86047@news.povray.org...
> > Nice warm look to it.
> > Odd shadow at the back, lower left. Doesn't seem to relate to anything.
>
> I noticed that while it was rendering. Haven't a clue where that could be
> coming from
> There's also a shadow on the left wall with no source that I can tell.
>
I could well be wrong, but the odd shadows seem to be cast by the candles
themselves - the upper tiers of candles would appear to be blocking light
from the lower tiers - do glows block light from other glows and/or lights?
The artifacts around the windows are peculiar - is there any part of the CSG
operation that made the windows that is the same shape as the rectangular
artifacts?
Post a reply to this message
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"Gail Shaw" <gsh### [at] monotixcoza> wrote in message
news:39d86528@news.povray.org...
|
| Bob Hughes <per### [at] aolcom?subject=PoV-News:> wrote in message
| news:39d86047@news.povray.org...
|
| > Also some strange places around the windows, among other things. Was
| > error_bound way down? <0.3, or not?
|
| Error bound was 1. I'm not too familiar with radiosity so I tweaked til it
| looked good.
Oh wow, hey, try error_bound 0.1, or even less and use pretrace_start and
_end of 1. It might do well.
Bob
Post a reply to this message
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Tom Melly <tom### [at] tomandlucouk> wrote in message
news:39d8692b@news.povray.org...
>
> I could well be wrong, but the odd shadows seem to be cast by the candles
> themselves - the upper tiers of candles would appear to be blocking light
> from the lower tiers - do glows block light from other glows and/or
lights?
Possibly, but the shadows are solid (looks like an invisible box is casting
shadows)
> The artifacts around the windows are peculiar - is there any part of the
CSG
> operation that made the windows that is the same shape as the rectangular
> artifacts?
Might be from the bumps normal, and the candles on the right.
Gail
--
********************************************************************
* gsh### [at] monotixcoza * System.dat not found. *
* http://www.rucus.ru.ac.za/~gail/ * Reformat hard drive Y)es O)k *
********************************************************************
* If at first you don't succeed, call it version 1.0 *
********************************************************************
Post a reply to this message
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Gail Shaw wrote:
>
> Just something that I thought up while watching
> TV the other week. There are no light sources in this
> scene. Each candle flame is made up of two glows.
>
> Radiosity settings were based on a post by Gilles Tran
> and adjusted until the picture looked good
>
> Render time : 4 hrs 5 min on a PIII 450.
>
I like it but IMO the candles are not bright enough in relation to the
walls/floor/etc. if the room is only lighted by the candles.
As Bob mentioned you should also try reducing error_bound.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
Post a reply to this message
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"Gail Shaw" <gsh### [at] monotixcoza> wrote in message
news:39d86b41@news.povray.org...
>
> Tom Melly <tom### [at] tomandlucouk> wrote in message
> news:39d8692b@news.povray.org...
> >
> > I could well be wrong, but the odd shadows seem to be cast by the
candles
> > themselves - the upper tiers of candles would appear to be blocking
light
> > from the lower tiers - do glows block light from other glows and/or
> lights?
>
> Possibly, but the shadows are solid (looks like an invisible box is
casting
> shadows)
To me it looks more like there is a band of -extra- light that covers
the upper half of the windows.
Post a reply to this message
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From: Bob Hughes
Subject: Re: Glows and radiosity (testing123 ~8.5K jpg]
Date: 2 Oct 2000 09:19:05
Message: <39d88b49@news.povray.org>
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"Christoph Hormann" <Chr### [at] schunteretctu-bsde> wrote in
message news:39D8707E.E88174E1@schunter.etc.tu-bs.de...
|
| As Bob mentioned you should also try reducing error_bound.
It might not matter. So far I've only succeeded in making a more or less
refined blotchiness. Similar to photons it seems to me. Have a look. This
rendering used error_bound 0.2 and at 0.1 the artifacts become better
defined spots, looking much like individual glows scattered all over the
object (alien character) on the sides facing the glows. I used a white glow
off camera to mimic a regular light and it never was enough to make a good
replacement; so this has light sources for both the red and white lights,
dimmed considerably.
Bob
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Attachments:
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Preview of image 'ab36.jpg'
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