Le 18-05-02 à 09:40, Roland Mösl a écrit :
> 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?
> 
> 
> 

Use photons mapping with the following setup :
1) In the global_settings block, create a photons block
2) Set your mirror as a target with "reflection on" with an object level 
photons block
3) Make your Sun a spot light directed at the mirror
4) Make the ground white
5) Place the camera overhead looking down

In point 3, you confine the light to only the mirror, plunging the rest 
of the scene into darkness. This will make the area illuminated by the 
reflected light stand out.
To see the path of the reflection, you can create an animation where the 
Sun follow it's normal path for the location.
You can use ambient in the finish of your ground or some fill light if 
you want to see more of the ground.

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