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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Eigen appears to rock.
- From: "Gael Guennebaud" <gael.guennebaud@xxxxxxxxx>
- Date: Fri, 22 Aug 2008 15:51:31 +0200
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On Fri, Aug 22, 2008 at 3:18 PM, Konstantin Heil
<konst.heil@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> Hi!
>
> On Friday 22 August 2008 15:09:54 Gael Guennebaud wrote:
>> For instance, if I want the mid point m of two Points p1 and p2:
>> Point m = 0.5*(p1+p2);
>> would have to be written:
>> Point m = 0.5 * ((p1-Point::Zero()) + (p2-Point::Zero())) + Point::Zero();
>> which version is more confusing ?
>
> Wow, this is very complicate. What's about
> Point m = p1+0.5*(p2-p1);
> This fits to the geometric immagination. Start on p1 and walk 0.5 the way from
> p2 to p1. :)
why not, but what about more general weighted mean of a set of points:
for(i) {
m += p[i] * weight[i];
sumW += weight[i];
}
m /= sumW;
cheers
gael.
> I wish you nice day.
> --
> Konstantin (kostja) Heil <><
> konst.heil@xxxxxxxxxxxxxxxxxxxxxx
> http://kostja.selfip.org
>