[Radiance-general] Help:Setting up a radiance system

[Lars O. Grobe]

Hi Steve,

congratulations, you passed the gate into the wonderful world of our
favourite time- and cpu-cycle consuming application...

The spotlight is a native light, but I guess you want to use a
photometric representation of a real-world light source.

1) Choose a source, and get the distribution from the manufacturer. You
should get a IES-formatted file.

2) Generate a radiance description from that file using ies2rad:

http://radsite.lbl.gov/radiance/man_html/ies2rad.1.html

3) Include that description instead of the spotlights (keep orientation
and position, and use !xform to include the source.

The procedure is described in detail in the tutorial that came with your
Radiance installation. And a great help are the tutorial from
http://luminance.londonmet.ac.uk/learnix/docs.shtml !

Good luck, CU Lars.
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