Oh, now I get it. I was thinking of my special case
scenario, in which the rays travels through the glass
first and meets the droplets on the backside. Thus my
interpretation of air-glass to glass-water to water-air.

To make the point: the issue is, once its inside the first
medium and enters the next, it won't get refracted again
when exiting the first medium it was in, right?

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde
>
> > > Take a ray entering a droplet for example: it hits the droplet surface
> > > and gets refracted, and is now inside the droplet. The next surface it
> > > hits is the glass, so it gets refracted as it should when going from
> > > water to glass. It is now inside the glass and the droplet. When it
hits
> > > the other droplet surface, *no refraction is done*, but it leaves the
> >
> > I guess you meant "When it hits the other glass surface", cause it makes
> > no sense if it doesn't refract when exiting the water and entering air.
>
> No, I meant the other water surface, I was ignoring the case where it
> exits directly into air. First the ray hits the drop and goes from air
> to water. Then it hits the glass and goes from water to glass, though it
> is still inside the drop object it is now travelling through glass. Then
> it hits the far side of the drop...they overlap, remember? Since it
> already did the refraction for water/glass, it ignores the refraction
> this time, and just removes the drop from the containing objects.
>
> --
> Christopher James Huff <cja### [at] earthlinknet>
> http://home.earthlink.net/~cjameshuff/
> POV-Ray TAG: chr### [at] tagpovrayorg
> http://tag.povray.org/

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