Lance Birch heeft geschreven in bericht <371041bf.0@news.povray.org>...
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>What I propose is a finish statement translucency keyword...  The way the
>calculation is made is by taking into account what translucency really
is...
>that is, non-directional diffuse reflection... (*gulp*).

Now you have me confused, don't you mean "non-directional diffuse
transmission plus absorbsion"?
To me translucent is between transparent and opaque. Transparent is
glassclear and has a transmission of at least 50%, opaque has a transmission
smaller than 5% (0%), translucent has a transmission between 5% and 50% and
is not glassclear. Light passes through and is scatterd and absorbed (milky
glass).

> Now because the
>diffuse color of a surface depends on the angle between the surface normal
>and the light, what you do to get translucency is ignore the surface normal
>alignment... (if that makes ANY sense to ANYONE I'll be happy, because it's
>hard to explain...).

ingo

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Met dank aan de muze met het glazen oog.

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