CGAL users discussion list

[Thomas Holzmann <>]

On 03/03/2017 03:07 PM, Laurent Rineau (CGAL/GeometryFactory) wrote:
> Le Friday, March 3, 2017 1:32:41 PM CET Thomas Holzmann a écrit :
> > Is there a way to normalize exact vectors (without sqrt). When I could
> > compute an exact unit vector, the inexact angle computation would not be
> > a problem...
> I do not think so. Let's take for example the vector {1., 1., 1.}. Its
> normalize version is:
>    { 1./sqrt(3.), 1./sqrt(3.), 1./sqrt(3.) }
>
> I think you cannot normalize vectors without being able to compute sqrt. You
> can probably compute *approximately normalized* vectors, though.
Yes, I'm already doing that. I just thought maybe there is a more 
elegant way to do this...

Thanks!

Thomas

--
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Dipl.-Ing. Thomas Holzmann
TU Graz - Institut fuer Maschinelles Sehen und Darstellen
Graz University of Technology - Institute for Computer Graphics & Vision
Inffeldgasse 16/II, 8010 Graz, Austria

http://www.icg.tugraz.at/
phone: +43 316 873 5091
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