I've said this before, but all objects in the official version of POV-Ray
have the 'double-illumination' bug. To see the bug, you have to add a normal
to the object, and clip the object with another so it is now perceived as an
infinitely-thin object:

camera{location<0,5,-10> look_at 0}

light_source{y*-100.,1}

sphere{0,3
 pigment{rgb 1}
 normal{bumps .0001}
}

Marc Schimmler wrote:

> Pabs wrote:
> >
> > shining a torch through your finger/hand/biological material in the dark
> >
> > where because your hand is not completely opaque some light actually
> > goes through your hand and out the other side.
> >
> > Does anyone know how to simulate it in POV
> >
> > PS I saw it done with a leaf in either A Bugs Life or Antz but don't
> > know what renderer was used
> >
>
> Bezier patches triangles and smooth triangles have this a feature
> (bug?).
> Don't know how well this works for you.
>
> Marc
>
> --
> Marc Schimmler

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