mops nous illumina en ce 2008-05-21 10:51 -->
> Hi
> I already have some difficulties with the lights in my scenes. The light 
> and
> the atmosphere of your image are very interesting to me. Could you show or
> explain me the way to do it.
> Is there a tutorial about lights for some realistic light? My scenes 
> usually
> appear too much artificial
> I learned much by observing other codes
> 
> thanks
> thierry
> 
> http://pagesperso-orange.fr/mops/atelier05.html
> 
Things that will make your light look more natural:
1 - area_light. In the real world, point light only comes from stars. Use 
adaptive to accelerate them. With adaptive, use a relatively large density: 
something like 17x17 or 33x33. Still fast and almost no banding nor graininess.
2 - light fading. Use fade_distance <Some Value> and fade_power 2. fade_distance 
should be commensurable with the appearent dimention of your source. You may 
need to use some high intensity values, like rgb 100 or even more in some cases.
3 - Add some slight colouration, keep it subtle. Ex.: rgb<1.101, 1.007, 1> for a 
slightly orangish light.

If you want to make a spherical area_light, use circular orient.

-- 
Alain
-------------------------------------------------
Grabel's Law: 2 is not equal to 3 -- not even for large values of 2.

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