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[Scherrer Daniel <>]

Thanks. It now works as expected.
Regards,
Daniel

-----Original Message-----
From: 

 
[mailto:]
 On Behalf Of Marc Glisse
Sent: Mittwoch, 16. September 2015 14:25
To: 

Subject: Re: [cgal-discuss] Hyperplane_d

On Wed, 16 Sep 2015, Scherrer Daniel wrote:

> Is there any example on how to use CGAL::Hyperplane_d?
>
> I tried to compute the orthogonal vector, first with:
>       typedef CGAL::Simple_cartesian<double> K;
>       typedef K::Point_3 Point;
>       typedef K::Vector_3 Vector;
>       Vector  v = CGAL::orthogonal_vector(Point(0,0,0), Point(1,0,2), 
> Point(0,1,0)); This gives v = [-2,0,1], which seams OK.
> Then I tried the same using a Hyperplane:
>       typedef CGAL::Epick_d<CGAL::Dimension_tag<3>> K;
>       typedef K::Point_d Point;
>       typedef K::Vector_d Vector;
>       typedef K::Hyperplane_d Plane;
>       std::vector<Point> points(3);
>       ...
>       Plane plane(points.begin(), points.end());
>       Vector v = plane.orthogonal_vector(); This gives v = [0,1,0.5], which 
> seams to be wrong.

There was a bug with hyperplanes containing the origin, I think it was
fixed:
https://github.com/CGAL/cgal/commit/b8503f3788c42b5938ae300d3c62251b666a278d
You could try version 4.7-beta1 which I hope has the fix.
Please let us know if it still fails.

--
Marc Glisse

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