"Vladimir Panteleev" <the### [at] gmailcom> wrote:
> Hi,
>
> Is it possible to create a surface which - when hit by a ray - simply transmits
> the ray out of another surface? I'm trying to create an effect similar to that
> in the video game "Portal".

I don't know exactly what you're going for, (I have never played or even seen
Portal) but you could render a whole different scene and then simply apply it on
a disc in the portal as a texture map. Then, set ambient to 1 and diffuse to 0.
PS. I'm not that experienced with POV-Ray either. :-)

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