I think the Photons option of POVRay does what you want.

David Buck

On 2018-05-02 9:40 AM, Roland Mösl wrote:
> In a construction project of mine a glare report is necessary, whether 
> the photovoltaic on the roof can reflect light in an adjacent nature 
> reserve.
> 
> This is what I want to do with POVRAY myself.
> 
> Enter the photovoltaic as a mirror, simulate the sun's run, and then see 
> if any of the pictures shows reflected light from the mirror to the 
> surrounding ground.
> 
> Is there any setting in POVRAY where it is calculated whether a point is 
> not only illuminated directly by one of the defined light sources, but 
> also checkes whether a ray of light hits the point via surfaces defined 
> as mirrors?
> 
> 
>

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