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Re: [cgal-discuss] Converting Google Maps HD meshes


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  • From: Sebastien Loriot <>
  • To:
  • Subject: Re: [cgal-discuss] Converting Google Maps HD meshes
  • Date: Mon, 28 Aug 2023 08:47:44 +0200
  • Authentication-results: mail2-smtp-roc.national.inria.fr; spf=None ; spf=Pass ; spf=None
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I did not have any issue opening the shared file.
Could you please share a minimal example I can compile and that shows
the error so that I can run on my side?

Best,

Sebastien.

On 8/28/23 08:28, Claus Volko ( via cgal-discuss Mailing List) wrote:
Yes, I uploaded it to: http://www.21stcenturyheadlines.com/temp/Scene_obj.zip <http://www.21stcenturyheadlines.com/temp/Scene_obj.zip>

Am Mo., 28. Aug. 2023 um 08:06 Uhr schrieb Sebastien Loriot < <>>:

Could you share such an obj file that CGAL cannot open?

Thanks,

Sebastien.

On 8/27/23 17:03, Claus Volko (
<> via cgal-discuss
Mailing List) wrote:
> We are trying to make OBJ files saved from Google Maps HD compatible
> with CGAL 5.6 for Shape Detection (Region Growing). On opening
the OBJ
> file I get an error message that does not explain what is wrong, but
> after converting to OFF it is more verbose:
>
> CGAL::Polyhedron_incremental_builder_3<HDS>::
> lookup_halfedge(): input error: facet 49 shares a halfedge from
vertex
> 145 to vertex 146 with facet 48.
>
> Polyhedron_scan_OFF<Traits>::
> operator()(): input error: facet 50 has fewer than 3 vertices.
> ERROR: cannot read the input file!
>
> I wrote a short program in C# that should fix the problem
(attached).
> However, the result is a file that is somewhat degenerated: the
number
> of planes is equal to the number of faces. This cannot be used.
>
> Does anybody have an idea how else this could be fixed?
>
> --
> Dipl.-Ing. Dr. Claus D. Volko, BSc
> http://www.cdvolko.net/ <http://www.cdvolko.net/>
<http://www.cdvolko.net/ <http://www.cdvolko.net/>>
>
>
>
>
> --
> You are currently subscribed to cgal-discuss.
> To unsubscribe or access the archives, go to
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<https://sympa.inria.fr/sympa/info/cgal-discuss>
>

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--
Dipl.-Ing. Dr. Claus D. Volko, BSc
http://www.cdvolko.net/ <http://www.cdvolko.net/>




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Attachment: Screenshot from 2023-08-28 08-40-04.png
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