CGAL users discussion list

[Manuel Caroli <>]

Hi,

it is not a member of the facet iterator but rather of the facet: As you
can find in the manual a facet is represented as
std::pair<Cell_handle,int>:
http://www.cgal.org/Manual/3.4/doc_html/cgal_manual/TriangulationDS_3/Chapter_main.html#TDS3-sec-intro

This should make it clear.

best

Manuel

Query Cgal wrote:
> Hi.
> 
> When I am using a facet iterator of a triangulation, I found that there 
> is a member called first which can be used in the following way.
> 
> itr -> first -> vertex(0);
> 
> where itr is a facet iterator of a triangulation
> 
> It seems that it returns a vertex of a triangular face. But I am not 
> sure if it is true.
> 
> Therefore, I have tried to search the CGAL manual for that.
> However, I cannot find anything thing about the member "first" of the 
> facet iterator.
> 
> Actually, what is itr -> first?
> Is it anything that is supposed to be used by us ?
> 
> Thank you
> 
> 
> 
> 
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