in news:3ce380eb@news.povray.org Martin Hellwig wrote:

>> Couldn't you get the same effect by surrounding a point light with a
>> small textured sphere or something?
>>
> Only thing is to calculate
> the fancy mapping for the texture. Also the sphere must not be
> visible in the scene? Would that be possible?
> 

Yes, with the no_image keyword (3.5).
I've tried this several times, but always come to the conclusion that 
bitmaps with a rather high resoltion are needed to prevent 'blocky' 
distribution. Especialy if the lightsource is at a 'big' distance from 
the surface it illuminates. Mapping povrays patterns on a sphere around 
the light works fine.
So I think directly modifying the distibution inside POV-Ray is a better 
option.

Ingo

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