In article <3c67fff8@news.povray.org>, "cadman" <cad### [at] graffitinet> 
wrote:

> So what does the radius keyword mean, then?  I pointed a cylinder light at a
> plane with concentric rings @ 1 unit intervals, and changing the radius
> corresponded to about 1/10 of a unit hotspot.  Does this seem confusing to
> anyone else?

Just guessing, but I think the size of the cylinder light spot is the 
same as a spot light spot at the point_at point. For example, if a spot 
light has a spot 5 units wide on a plane going through the point_at 
point, a cylinder light with the same parameters will be 5 units wide.
Personally, I'd prefer it if the radius keyword specified the actual 
radius, and the angle keyword were used to specify the angle, but this 
wouldn't keep backwards compatibility.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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