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> Hi,
> I'm using POV-Ray to simulate a laser beam pointed to a screen. I'm also 
> using
> photons in my programming and I would like to know if it's possible to 
> detect
> photons on my screen. Does there exist any function for this? I'm looking 
> for a

> approach
> take. Is there somebody have an idea?
>
> Thank you
>
> Sylvain


trace() is the best way to test if a ray hits an object and to know the 
coordinates and normal of the intersection point.


Marc

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