in news:4044ef3b$1@news.povray.org Slime wrote:

> This could probably be done in SDL with a sphere with a filtering
> pigment around a normal light source, unless I misunderstand.
> 

The hard part would probably be to convert luminance file to functions. 
Ian Ashdown made a parser available for parsing IESNA LM-63 and similar 
files, maybe that could be a start.

Also if I remember well, there was somebody who patched povray in a way 
that it could work these IES files, but the code was never published. 
Can't find the discussion, it was about a year (or more) ago.

I would realy welcom a POV-Ray feature that could read and deal with such 
files directly. Many manufacturers of lighting systems make these data 
available.


Ingo

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