Is there a tutorial or something available for determining normal vectors
for use in a mesh?  The POV documentation states that since calculating
these manually is quite laborious, they are normally done with a computer
program...but I can't write said program without the math to do it!

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On Thu, 13 Feb 2003 10:52:08 +0000, Tailkinker <gro### [at] yahoocouk> wrote:
> Is there a tutorial or something available for determining normal vectors
> for use in a mesh?  The POV documentation states that since calculating
> these manually is quite laborious, they are normally done with a computer
> program...but I can't write said program without the math to do it!

You mean calculation of normals for vertices to make mesh smooth ? This is
included in standard distribution in HF_* macros but you can of course find it
online via http://www.google.com/search?q=normal+vectors+from+triangles

ABX

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