Re: [info-performer] pfdGeoBuilder for automatic vertex normals generation

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From: Paolo Farinelli (paolo++at++sgi.com)
Date: 01/30/2003 17:52:36

ciao Alessandra,

I just had a look at the source for pfdGeoBuiilder in
/usr/share/Performer/src/lib/libpfdu,
and unfortunately it seems that pfdGeoBuiilder will not compute smooth
vertex normals,
so you would have to implement this yourself.

Do you want to smoothly shade single pfGeoSets, or do you need to
simultaneously shade
several pfGeoSets?

Let me know if you need help with the implementation.

Buon Lavoro,
Paolo

acanesi++at++ais.it wrote:

>Hi Performers,
>I'm using pfdGeoBuilder to 'stripify' a generic model: and this works
>fine. I would like to have smooth vertex normals generated automatically
>by the pfGeoBuilder, but this seems to be impossible: I only get the
>normal to each triangle (the resulting geoset is a PFGS_FLAT_TRISTRIPS).
>Am I doing something wrong, or it is just that if one wants smooth normals
>must compute them by himself?
>
>Thank you for any comments or suggestions
>
>Alessandra
>
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-- 
Paolo Farinelli                                           paolo++at++sgi.com
Member of Technical Staff, OpenGL Performer              1-650-933-1808
Silicon Graphics        1600 Amphitheatre Pkwy, Mountain View, CA 94043

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