Am 01.09.2011 06:40, schrieb Quartz:
> I'm not sure if this question would be considered for "advanced" users or not,
> but: Is it possible to cast caustics from an object without seeing things
> reflected in its surface?
>
> I am modeling a planet, and I would like to see reflected light illuminating the
> dark side of one of its moons. I briefly tried radiosity, but photon mapping
> seemed more accurate.
>
> My problem is that I don't want to see objects reflected in the surface of the
> planet; I only want the caustics it casts. ...Is this outright impossible?

I don't think you'll get the proper results with photons; that approach 
assumes that the planet has a highly specular reflection profile, while 
really a planet probably should exhibit primarily diffuse reflection.

I'd suggest radiosity with a very (/really/ very) high sample count, 
setting any objects other than the planet to "no_radiosity" to avoid 
wasting intersection tests on them for the sake of radiosity sampling. 
Needs POV-Ray 3.7 though.


If you nonetheless want to go for the photons approach, try setting all 
of the objects in your scene to "no_reflection" so they don't appear in 
reflections.

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