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From: Nieminen Mika
Subject: Radiosity test 2
Date: 2 Jul 1999 01:12:28
Message: <377c4a3c@news.povray.org>
http://iki.fi/warp/pics/Radiosity_test2/

  This time I tested the effects of the recursion level. Comments are
welcome.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/


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From: Arthur Flint
Subject: Re: Radiosity test 2
Date: 2 Jul 1999 02:13:16
Message: <377C5965.6604610@gci.net>
Nieminen Mika wrote:

>   http://iki.fi/warp/pics/Radiosity_test2/
>
>   This time I tested the effects of the recursion level. Comments are
> welcome.
>
> --
> main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
> ):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

I  was wondering if you could post / link to the source code for your scenes.

Any chance that I get to learn by looking at the scene code helps.
Mr. Art


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From: Gilles Tran
Subject: Re: Radiosity test 2
Date: 2 Jul 1999 10:28:43
Message: <377CCD47.B1814FF4@inapg.inra.fr>
These tests really show how good radiosity can be when used properly. I wish
the source code would be included in the official pov distribution (or at
least on your page...), so that the many people who have trouble with
radiosity could use them as a starting point.
Gilles Tran

Nieminen Mika wrote:

>   http://iki.fi/warp/pics/Radiosity_test2/
>
>   This time I tested the effects of the recursion level. Comments are
> welcome.
>
> --
> main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
> ):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/


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From: Margus Ramst
Subject: Re: Radiosity test 2
Date: 2 Jul 1999 11:34:50
Message: <377CDC3E.3DF532DC@peak.edu.ee>
This is an excellent demonstration. But while it proves the usefulness of
radiosity, it gives no information as to how this can be achieved. I suggest
posting at least the sources, and - if you feel like it - some form of tutorial.
Two suggestions:
1) Your comments in test 1 give the impression that one can go beyond recursion
level 2. As you probably know, this is not possible.
2) I test 3, I suggest covering the back of the reflector with a darker layer.
Otherwise its shadow looks weird.

Margus

Nieminen Mika wrote:
> 
>   http://iki.fi/warp/pics/Radiosity_test2/
> 
>   This time I tested the effects of the recursion level. Comments are
> welcome.
> 
> --
> main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
> ):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/


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From: Arthur Flint
Subject: Re: Radiosity test 2
Date: 2 Jul 1999 13:39:08
Message: <377CFA2A.2A5A818D@gci.net>
Arthur Flint wrote:

> Nieminen Mika wrote:
>
> >   http://iki.fi/warp/pics/Radiosity_test2/
> >
> >   This time I tested the effects of the recursion level. Comments are
> > welcome.
> >
> > --
> > main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
> > ):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/
>
> I  was wondering if you could post / link to the source code for your scenes.
>
> Any chance that I get to learn by looking at the scene code helps.
> Mr. Art

I took off on my own last night on a parlor rendering with radiosity and found
that if you set
#default{finish{ambient 0.0}} you get virtually no radiosity in the picture. The
scene that I was
working on only took 5 minutes. Increasing ambient to 0.05 is enough to bring in
radiosity affects
and increase render time to over 14 minutes.
So, lesson #1: Radiosity    *needs*    ambient values above zero.


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From: Alan Kong
Subject: Re: Radiosity test 2
Date: 2 Jul 1999 21:15:48
Message: <377f61a5.150324878@news.povray.org>
On 2 Jul 1999 01:12:28 -0400, Nieminen Mika <war### [at] cctutfi> wrote:

>  This time I tested the effects of the recursion level. Comments are
>welcome.

  Very nice radiosity test images, Warp. Looks great! Well thought out,
showing the effects of radiosity on objects in shadowed areas of the scene,
too.

-- 
Alan
--------------------------------------------------------------------
http://www.povray.org - Home of the Persistence of Vision Ray Tracer
news.povray.org - where POV-Ray enthusiasts around the world can get
together to exchange ideas, information, and experiences with others
--------------------------------------------------------------------


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From: Bob Hughes
Subject: Re: Radiosity test 2
Date: 3 Jul 1999 09:28:36
Message: <377E0FED.26495B43@aol.com>
Very convincing argument for using radiosity, the "3D" look is brought
out so well and done well too as Alan K. has said. In fact I wouldn't
have realized just how bland a non-radiosity image was if not for this.

Your Image 2.2 seemed to be lost from the web page so you might want to
check on that.


Alan Kong wrote:
> 
> On 2 Jul 1999 01:12:28 -0400, Nieminen Mika <war### [at] cctutfi> wrote:
> 
> >  This time I tested the effects of the recursion level. Comments are
> >welcome.
> 
>   Very nice radiosity test images, Warp. Looks great! Well thought out,
> showing the effects of radiosity on objects in shadowed areas of the scene,
> too.
> 
> --
> Alan
> --------------------------------------------------------------------
> http://www.povray.org - Home of the Persistence of Vision Ray Tracer
> news.povray.org - where POV-Ray enthusiasts around the world can get
> together to exchange ideas, information, and experiences with others
> --------------------------------------------------------------------

-- 
 omniVERSE: beyond the universe
  http://members.aol.com/inversez/homepage.htm
 mailto://inversez@aol.com?Subject=PoV-News


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From: Lance Birch
Subject: Re: Radiosity test 2
Date: 3 Jul 1999 10:21:13
Message: <377e1c59@news.povray.org>
>Your Image 2.2 seemed to be lost from the web page so you might want to
>check on that.

Try refreshing, sometimes multiple connections are dropped by the browser or
the server.  (it worked just fine for me)

--
Lance.


---
For the latest 3D Studio MAX plug-ins, images and much more, go to:
The Zone - http://come.to/the.zone
For a totally different experience, visit my Chroma Key Website:
Colorblind - http://listen.to/colorblind


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From: Bob Hughes
Subject: Re: Radiosity test 2
Date: 3 Jul 1999 18:11:05
Message: <377E8A62.255086A5@aol.com>
It showed itself this time, yes. Had almost empty cache last time.
Anyway, no problem with it.


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From: Nieminen Mika
Subject: Re: Radiosity test 2
Date: 4 Jul 1999 14:37:07
Message: <377fa9d3@news.povray.org>
Margus Ramst <mar### [at] peakeduee> wrote:
: 1) Your comments in test 1 give the impression that one can go beyond recursion
: level 2. As you probably know, this is not possible.

  Oops. I forgot that...

: 2) I test 3, I suggest covering the back of the reflector with a darker layer.
: Otherwise its shadow looks weird.

  Actually it's not its shadow. The reflector is actually emitting light to
every direction (I have global ambient light set to 4). Covering its backside
with a black layer is a good idea, though.

  To everyone: I will probably write a text about how those images were
done and my experience about radiosity (which is not very extensive, though).

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/


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