In article <42261692$1@news.povray.org>,
 Mike Raiford <mra### [at] hotmailcom> wrote:

> That seems to be the way those obnoxious reflective sunglasses are made, 
> but IIRC, two-way mirrors are a bit different.
> 
> And couldn't the 50/50 effect be acheived with conserve_energy?

The conserve_energy option is mainly useful with variable reflection. I 
only used constant reflection, and with the settings I used energy is 
conserved, though a more realistic scene would use reflection and 
transmission that total to less than 100% since in practice we can't 
make a surface that doesn't absorb any light.

We once had a one-way mirror on a porch door. It was really one way, if 
you held it open so both sides faced the same environment, you could see 
through it one way but not the other. When the mirrored layer scratched 
off, you could see that there was a dark layer under it, so from one 
side reflections were filtered twice while from the other they were 
unfiltered. If you put it between two equally lit rooms, only one would 
easily see the other. A dark room would see a light room through it both 
ways, but one of the ways would work much better.

-- 
Christopher James Huff <cja### [at] gmailcom>
POV-Ray TAG: <chr### [at] tagpovrayorg>
http://tag.povray.org/

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