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[Hugo Ledoux <>]

Thanks Jane, I had not noticed you replied.

Testing is rather complex but I see you tested with my case, and I
read the algorithm and I am pretty sure it works.

Thanks for solving this that fast!
Hugo

On Fri, Apr 14, 2017 at 5:54 PM, Jane Tournois
<>
 wrote:
> Hi Hugo,
>
> we have created a pull request [1] that should fix this function. It will be
> tested in the coming days before it is integrated to the master branch, but
> you can already experiment with it.
>
> Best regards,
>
> Jane.
>
>
> [1] https://github.com/CGAL/cgal/pull/2057
>
>
> Le 06/04/2017 à 11:27, Hugo Ledoux a écrit :
>>
>> Greetings,
>>
>> I have one mesh whose normals are pointing outwards, but the function
>> CGAL::Polygon_mesh_processing::is_outward_oriented() returns
>> otherwise.
>>
>> I have checked the code and the average of the normals of the faces
>> incident to the min-vertex is used, which conceptually I doubt should
>> work… And it doesn’t work in my case (unless I made a mistake
>> somewhere), you can download my OFF file, along with the code I used,
>> there:
>> https://www.dropbox.com/sh/49as9yt139v6kxk/AABXI3Nh4ZfqCEDWHyv8Q-Zja?dl=0
>>
>> If other ways to compute the normal were used (eg by using the area of
>> the face as a weight), then the x-component of the vector could be
>> negative (as is used by cgal), but I am wondering if that would always
>> work. I think not.
>>
>> Any comments appreciated, cheers,
>> Hugo Ledoux
>>
>
> --
> Jane Tournois, PhD
> R&D Engineer at GeometryFactory
> http://www.geometryfactory.com/
>
>
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