And lo on Thu, 01 Jul 2004 09:56:17 -0500, Mike Raiford  
<mra### [at] hotmailcom> did spake, saying:

> Mike Raiford wrote:
>
>> Phil Cook wrote:
>>>  AFAIK ambient, like emission,
>>> doesn't  produce light in this way even using radiosity.
>
> Erm.. Ambient does produce light, but the light does no react with the  
> media. Media affects radiosity, radiosity does not affect media.
>

*in this way* :)

3.7.5: "POV-Ray uses the ambient keyword to determine how much light  
coming from the ambient light source is reflected by a surface" and

6.7.3.1 "Computing real ambient light would take far too much time, so we  
simulate ambient light by adding a small amount of white light to each  
texture whether or not a light is actually shining on that texture."

So if you think about it what is the location of the ambient light source  
and how do you trace a ray along it it through the media to sample along?

Gods I've been fiddling with media to long :P

--
Phil Cook

-- 
All thoughts and comments are my own unless otherwise stated and I am  
happy to be proven wrong.

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