POV-Ray : Newsgroups : povray.binaries.images : radiosity lighting Server Time
4 Nov 2024 20:16:47 EST (-0500)
  radiosity lighting (Message 1 to 9 of 9)  
From: Bryan Valencia
Subject: radiosity lighting
Date: 5 May 2000 20:12:03
Message: <39136374.EA798673@209software.com>
Ok, I am using radiosity lighting, and I want my little (ambient 1)
gizmos to throw off a LOT of light., but they are only having an
effect for a very short range.  What should I change to make the light
cast for about 100+ units?

here are my settings.

global_settings{
  radiosity{
   brightness 5      //float value that is the degree to which ambient
values are brightened (3.3)
   count 50           //number of rays that are sent out  (100)
   distance_maximum 1  // (required) sets the distance in model units
from a sample at which the error is guaranteed to hit 100% (0)
   error_bound .01      //the fraction of error tolerated(.4)
   gray_threshold .8   //grays it down a little, to make your scene
more believable (.5)
   low_error_factor .6 //sets the amount that the error bound is
dropped during the preliminary image passes(.8)
   minimum_reuse .0015  //the fraction of the screen width which sets
the minimum radius of reuse for each sample point (.015)
   nearest_count 10     //the maximum number of old ambient values
blended together to create a new interpolated value (6) (<4 for
debugging)
   recursion_limit 1  //how many recursion levels are used to
calculate the diffuse inter-reflection. Valid values are one and two.
(1)
  }
  ambient_light <.3,.3,.3>
  assumed_gamma   1

}



--
Bryan Valencia
Software Services - Making Windows Scream
http://www.209software.com
mailto:bry### [at] 209softwarecom


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From: Glen Berry
Subject: Re: radiosity lighting
Date: 5 May 2000 20:27:01
Message: <h2YTOS9IEtDJYyU89aeRgu7w60YN@4ax.com>
On Fri, 05 May 2000 17:12:37 -0700, Bryan Valencia
<bry### [at] 209softwarecom> wrote:

>What should I change to make the light cast for about 100+ units?

First, you need to ask this question on povray.general, or perhaps on
povray.advanced-users

You will find much better help that way.

( Remove the "7" from 7no### [at] ezwvcom to email me. )


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From: David Fontaine
Subject: Re: radiosity lighting
Date: 6 May 2000 00:44:59
Message: <3913A2A4.4B5E03DB@faricy.net>
Bryan Valencia wrote:

> Ok, I am using radiosity lighting, and I want my little (ambient 1)
> gizmos to throw off a LOT of light., but they are only having an
> effect for a very short range.  What should I change to make the light
> cast for about 100+ units?

try ambient >1

--
David Fontaine     <dav### [at] faricynet>    ICQ 55354965
Please visit my website: http:/www.faricy.net/~davidf/


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From: Bryan Valencia
Subject: Re: radiosity lighting
Date: 8 May 2000 12:02:10
Message: <3916E51F.9239A2E@209software.com>
David Fontaine wrote:

>
> try ambient >1

You can do that?

--
Bryan Valencia
Software Services - Making Windows Scream
http://www.209software.com
mailto:bry### [at] 209softwarecom


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From: Ken
Subject: Re: radiosity lighting
Date: 8 May 2000 13:56:02
Message: <3916FF27.FF733980@pacbell.net>
Bryan Valencia wrote:
> 
> David Fontaine wrote:
> 
> >
> > try ambient >1
> 
> You can do that?

Yes. You can also use color values greater than one in both pigments
and light sources.

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: Bryan Valencia
Subject: Re: radiosity lighting (holy cow)!
Date: 8 May 2000 14:48:41
Message: <39170C27.26CC1B61@209software.com>
Thanks Ken;

    This is my "gravship" using only radiosity lighting.
    There are no light_sources at all.
    It rendered in MegaPOV in LESS THAN 3 MINUTES!
    This rocks! I am going to do that animation now!



Ken wrote:

> Bryan Valencia wrote:
> >
> > David Fontaine wrote:
> >
> > >
> > > try ambient >1
> >
> > You can do that?
>
> Yes. You can also use color values greater than one in both pigments
> and light sources.
>
> --
> Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

--
Bryan Valencia
Software Services - Making Windows Scream
http://www.209software.com
mailto:bry### [at] 209softwarecom


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Attachments:
Download 'gravship.jpg' (9 KB)

Preview of image 'gravship.jpg'
gravship.jpg


 

From: David Fontaine
Subject: Re: radiosity lighting (holy cow)!
Date: 8 May 2000 18:30:53
Message: <39173F66.E4AFBC73@faricy.net>
I think the mabient value on the ship is a tad high, but it looks good.

--
David Fontaine     <dav### [at] faricynet>    ICQ 55354965
Please visit my website: http:/www.faricy.net/~davidf/


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From: Bob Hughes
Subject: Re: radiosity lighting (holy cow)!
Date: 9 May 2000 09:14:28
Message: <39180f34@news.povray.org>
Like night and day.  Nice going.
Many radiosity renders aren't so drastically changed.
But I wonder of the proposed animation...  the shift in positions
for either or both camera and ship might prove different than expected since
I'd think the perceived lighting might switch around a lot.  Well, might be okay
if enough 'count' is used I'm guessing.

Bob

"Bryan Valencia" <bry### [at] 209softwarecom> wrote in message
news:39170C27.26CC1B61@209software.com...
| Thanks Ken;
|
|     This is my "gravship" using only radiosity lighting.
|     There are no light_sources at all.
|     It rendered in MegaPOV in LESS THAN 3 MINUTES!
|     This rocks! I am going to do that animation now!


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From: Jerome
Subject: Re: radiosity lighting
Date: 9 May 2000 10:03:36
Message: <39181AB3.C6F0DE69@iname.com>
Bryan Valencia wrote:
> 
> David Fontaine wrote:
> 
> >
> > try ambient >1
> 
> You can do that?
> 
	You can even use negative values for special effects (won't
help for your problem, but I thought it worth mentionning).

		Jerome
-- 

* Doctor Jekyll had something * mailto:ber### [at] inamecom
* to Hyde...                  * http://www.enst.fr/~jberger
*******************************


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