Bill Pragnell nous apporta ses lumieres en ce 09-02-2007 07:32:
> "Arno" <nomail@nomail> wrote:
>>> Aha. Try adding the no_radiosity keyword to your glass dome.
>> Thanks! That did the trick.

>> Can anybody explain why this is needed here? I don't understand it.

> I think it's just because the radiosity sampling ignores transparency.
It get's thru transparent objects in standard POV-Ray.
> Presumably, diffuse and ambient contributions to the illumination are taken
> from the first object encountered along the sampling ray regardless of other
> surface characteristics; as a side effect, transparent objects block
> radiosity lighting. I'm sure others can expand on this if I have it wrong!

> I'm not sure how one would reliably avoid this issue in standard POV-Ray
> versions though - I think no_radiosity is indigenous to MegaPOV.

> Bill


Radiosity do work trough transparent objects, you can even have a lense or globe 
project an image on a surface. That image becomes crude if the focal lenght gets 
to long, but it's there.

-- 
Alain
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WARNING: the crumsumpten of alcohol may Mack you tink you kan tpye reel gode

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