"tmelram" <taj### [at] yahoocom> wrote:
> Hi, I'm trying to create a movie projector and have it project an image onto
> onto other surfaces. I'd also like to have a cone shape volumetric effect for
> the dust in the air near the projector. How would I go about this in POV Ray?

Is this the sort of thing you want? If so I'll look out the code.
Incidentally the "photograph" is one of Thomas's entries to TC-RTC.

https://i.imgur.com/Oqmn1.jpg

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