CGAL users discussion list

["Wesley Smith" <>]

Eventually I did but I think part of the problem was I was using the
cgal_manual.pdf as opposed to the website which makes things easier to
navigate.  It seems pretty obvious now.

thanks,
wes

On 8/12/07, Andreas Fabri 
<>
 wrote:
> Wesley Smith wrote:
> > Hi,
> > I've just started using CGAL and am having a hard time navigating the
> > documentation and code.  I'm just trying to do some simple things
> > right now.  I have a Voronoi_diagram_2 and am doing the following:
> >
> > Edge_iterator edge_iter = voronoi->edges_begin();
> >
> > I can't seem to find any documentation or code that describes what
> > Edge_iterator points to or what kinds of functions it has available.
> > Any pointers are greatly appreciated.
> >
> > thanks,
> > wes
>
>
> It would be good to understand what can go wrong through navigation.
> So let me trace a path from the table of contents of the entire manual
> to the documentation of the Halfedge type.
>
> If this is counterintuitive please let us know, as user feedback
> is helpful.
>
>
>  From the main manual page
> http://www.cgal.org/Manual/3.3/doc_html/cgal_manual/contents.html
>
> when clicking on "IX Voronoi Diagrams"  you get here:
> http://www.cgal.org/Manual/3.3/doc_html/cgal_manual/contents.html#part_IX
> where you can read:
>
> 33   2D Voronoi Diagram Adaptor                 User Manual             
> Reference Manual
>
> When clicking on "Reference Manual" you get here:
> http://www.cgal.org/Manual/3.3/doc_html/cgal_manual/Voronoi_diagram_2_ref/Chapter_intro.html
>
> When clicking on  "CGAL::Voronoi_diagram_2<DG,AT,AP>" you get here:
> http://www.cgal.org/Manual/3.3/doc_html/cgal_manual/Voronoi_diagram_2_ref/Class_Voronoi_diagram_2.html#Cross_link_anchor_1039
>
> where the method you use is documented:
>
>    Halfedge_iterator      vd.halfedges_begin ()          Starts at an 
> arbitrary Voronoi halfedge.
>
> and where the type is explained as follows:
>
>    Voronoi_diagram_2<DG,AT,AP>::Halfedge_iterator
>         A type for an iterator over Voronoi halfedges. Halfedges are 
> oriented and come in pairs. Its value type is Halfedge.
>
>
> When clicking on "Halfedge" you get here, where you can see what you can do 
> with a half edge:
>
> http://www.cgal.org/Manual/3.3/doc_html/cgal_manual/Voronoi_diagram_2_ref/Class_Voronoi_diagram_2-DG-AT-AP---Halfedge.html#Cross_link_anchor_1040
>
>
>
> So where did you get lost, and why couldn't you find it yourself ?
>
>
> Best regards,
>
> andreas
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