> Big deal, there are lots of us here who use scattering media despite it
> being "too slow". My suggestion: If you're too impatient for raytracing,
> then don't do it.

Now, hold on. He has good reasons for wanting to use emitting media instead
of scattering. One of those reasons is speed, to which your only argument
seems to be "it's not that bad" or "it could be worse." Well, he's looked at
the tradeoff between speed and quality/accuracy of his two options, and he's
made a choice. Personally, I think it's a very reasonable choice. I also
agree with him on the difficulty of getting spotlights to look nice in
scattering media.

> I hate it when people ask for advice, then when they don't get the
> answer they want to hear they go on some long, drawn out diatribe about
> how they were right in the first place, and anyone who advises them are
> wrong.

He didn't ask for advice on what type of media to use. He asked for help on
writing a function to describe the light cone of a spotlight. When
challenged on his choice of media types, he gave an explanation for his
decision. It's not something we need to get hostile about.

It's fine to encourage him to reconsider, but this isn't a case of right or
wrong.

 - Slime
 [ http://www.slimeland.com/ ]

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