POV-Ray: Newsgroups: povray.general: Calculating the normals of a triangle: Re: Calculating the normals of a triangle

POV-Ray : Newsgroups : povray.general : Calculating the normals of a triangle : Re: Calculating the normals of a triangle		Server Time 5 Aug 2024 12:17:21 EDT (-0400)

From: ABX
Date: 11 Sep 2002 08:36:12
Message: <qvdunu4kj2h82glmf0i9l824m2t65gov8v@4ax.com>

On Wed, 11 Sep 2002 14:02:16 +0200, Marcus Fritzsch <m### [at] fritschyde> wrote:
> does anybody knows how to calculate the normals of the 
> three points from the known triangle?

It is averaged addition from normals of all triangles in this vertex.
Be aware it can be weighted with angle/area:
http://news.povray.org/povray.binaries.images/13313/

ABX

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