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In article <403### [at] univ-savoie fr> , Christophe Raffalli
<raf### [at] univ-savoiefr> wrote:
> By the way, does povray requires normal of lenght 1. It is not clear
> again from the manual (so I assume it does not require anything)
It depends. In cases were a non-unit length normal is useful, code should
not normalise it (and it should be noted in the docs where this happens).
However, everywhere else the code normalises the normals by default as
expected.
To answer your question, it does normalise mesh surface normals.
Thorsten
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Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde
Visit POV-Ray on the web: http://mac.povray.org
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