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Re: [cgal-discuss] Reverse the winding of a polygon mesh?


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  • From: "Kevin Xu" <>
  • To:
  • Subject: Re: [cgal-discuss] Reverse the winding of a polygon mesh?
  • Date: Mon, 5 May 2008 17:04:33 +0800
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Thanks, Andreas

On 5/5/08, Andreas Fabri
<>
wrote:
>
> wrote:
> > Hi, all
> >
> > I got a polygon mesh (stored as a Polygon_3) with wrong winding. Is there
> any way to reverse its winding?
> >
> > I'm thinking of reversing all halfedges in the mesh one by one. Is it
> possible to reverse the orientation of a halfedge?
> >
> > Thank you.
> >
>
> Hi Kevin,
>
> This one should do it:
>
> void Polyhedron_3<..>.inside_out () reverses facet orientations
> (incl. plane equations if supported).
>
>
> andreas
>
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