Hi.

I've just started to play with photons and:
- I didn't manage to make my area lights produce photons without 
specifying the "area_light" keyword in the photon definition of the light.
- When using photons with an area light, I need a huge amount of photons 
(3.000.000) to get something smooth...
- I wanted to make a mirror: a refracting glass and a reflective surface 
just behind...It doesn't work...I tried to add the ignore_photon and/or 
pass_through (not sure of the keyword, don't have my scene here) and 
there was no result...

Can someone explain those 3 points to me ?

thanks.

                David Gemelli

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gemelli david <d.g### [at] xlstudiocom> wrote:
: Can someone explain those 3 points to me ?

  Let me guess: Your area light is inside a shadowless object with no
photons_pass_through applied.

-- 
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rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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> 
> 
>   Let me guess: Your area light is inside a shadowless object with no
> photons_pass_through applied.
> 
No...it is just above a box...floating in the pure empty air...
I'll do the scene again and post the code and image...

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I used an area light with photons in the angle dependent shader scene I
posted.

The source is in p.b.s-f so you can see how I did it. Just putting

    photons { count 2000000 jitter 0.5 }

in the global settings,

    photons { reflection on refraction on }

in the area light source and

    photons { target refraction off reflection on ignore_photons }
 
in the mirror seemed to work ...

I used PoVMan for rendering mine - which MegaPoV variant are you using?

	Mike Andrews.

gemelli david wrote:
> 
> Hi.
> 
> I've just started to play with photons and:
> - I didn't manage to make my area lights produce photons without
> specifying the "area_light" keyword in the photon definition of the light.
> - When using photons with an area light, I need a huge amount of photons
> (3.000.000) to get something smooth...
> - I wanted to make a mirror: a refracting glass and a reflective surface
> just behind...It doesn't work...I tried to add the ignore_photon and/or
> pass_through (not sure of the keyword, don't have my scene here) and
> there was no result...
> 
> Can someone explain those 3 points to me ?
> 
> thanks.
> 
>                 David Gemelli

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