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Re: [cgal-discuss] Accessing Facet_handle of a Polyhedron_3 by ID (was: Half-edge representation, CGAL vs OpenMesh)


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  • From: Nicholas Mario Wardhana <>
  • To:
  • Subject: Re: [cgal-discuss] Accessing Facet_handle of a Polyhedron_3 by ID (was: Half-edge representation, CGAL vs OpenMesh)
  • Date: Tue, 18 Jan 2011 11:03:56 +0800
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On 17 January 2011 15:08, Sebastien Loriot (GeometryFactory)
<>
wrote:
> There is nothing to do it directly.
> However, note that the Polyhedron has a template parameter to tune
> the underlying HDS used.
> The HDS can be either base on a lists (the default for Polyhedron) or on
> vectors. In the case of vectors, you have random access to facets container
> (using std::advance and facets_begin() for example).
>
> The price you have to pay to use HDS based on vector is that you need to
> have an upper bound on the number of vertices, facets and halfedges.
>
> See:
> http://www.cgal.org/Manual/latest/doc_html/cgal_manual/HalfedgeDS_ref/Class_HalfedgeDS_list.html#Cross_link_anchor_1121
> http://www.cgal.org/Manual/latest/doc_html/cgal_manual/HalfedgeDS_ref/Class_HalfedgeDS_vector.html#Cross_link_anchor_1122
>
>
> S.
>

Thank you for your explanation Sebastian, I think I can include both
functionalities (list and vector) in my wrapper class.

Best regards,
Nicholas Mario Wardhana

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