Catseye nous illumina en ce 2009-01-06 22:23 -->
> Is there a way to construct a 1-way mirror so that the camera "sees" objects 
> through the backside of a mirror that reflects image rays from the object on 
> the front side?
> 
> Thanks in advance. 
> 
> 
You can do it the way actual one-way mirrors work.

Have a surface with a relatively low reflection value. The material is similar 
to the lenses of sun glaces. The side where the camera is located is in relative 
darkness. The side facing the mirror have a strong illumination.

The mirror will be constructed similarly to :
difference{
	box{<10,10,1><-10,-10,0>pigment{rgbt 0.5}} // Some darkened "glass"
	box{<11,11,1.1><-11,-11,0.9>pigment{rgbt 1}finish{reflection 0.5}} // The 
mirror part, toward the rest of the scene.
	}
With the camera toward -z.


You still have a reflection of what is on the camera side, but the dark surface 
and the difference in illumination contribute to make it barely noticeable.

-- 
Alain
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