In article <3ece88e2@news.povray.org> , "Gilles Tran" <git### [at] wanadoofr> 
wrote:

> BTW, that was one of the reasons we used a lot of light groups in the space
> image (www.oyonale.com/iss) so that objects wouldn't project shadows on each
> other and still have highlights.

Well, that is after all one of the main reasons why light_groups exist :-)

And they are also fairly fast, or, to be precise, there is next to no speed
penalty on objects not lit by those light sources.  Nevertheless,
light_groups could still be a bit faster if shadow rays could be controlled
as well as some people have requested in the past...

    Thorsten

____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org

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