On Wed, 16 Apr 2003 08:25:58 EDT, Matti Karnaattu wrote:

> It is necessary to set light source object ambient to high to get realistic
> highlights to shiny surfaces. Problem is that I can't remove ambient object
> from radiosity calculations. This causes ugly errors in lightning because
> there is a ambient light source in scene. I tried to use "no_image" object
> modifier and put visible light source under light source "looks_like"
> statement.
> 
> How can I remove light_source object from radiosity calculations? Is there
> any way cheat Pov-Ray radiosity algorithm? Like putting some invisible
> object around ligh source object so radiosity algorithm take samples from
> object surrounding light_source?
> 
> Matti

I understand your problem and that is EXACTLY why I made a patch to fix it. 
My patch adds a no_radiosity keyword that works like no_image or no_shadow 
only it removes the object from radiosity calculations even when calculated 
through mirrors. I hate to keep people waiting so long but progress has 
been standing still for the past several months. I've got a lot of fixing 
to do and not much time to do it in.

Anyway, back on track, if you give your bright ambient object no_shadow and 
no_image, it will stop most radiosity calculations from interfering with 
your lighting. If you want to see the object itself, look at the entire 
scene through a mirror (I usually coupled the ambient object trick with my 
poor mirrorflare include).

-- 
light_source#macro G(E)sphere{z+E*y*5e-3.04rotate-z*E*6pigment{rgbt#end{
20*y-10#local n=162;1}#while(n)#local n=n-.3;G(n)x}}G(-n).7}}#end//GregE

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