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[Vincent Rouvreau <>]

Vincent Rouvreau - Service Expérimentation et Développement
INRIA Saclay
Tel: (+33).1.74.85.42.32

----- Mail original -----

> De: "Vincent Rouvreau [via cgal-discuss]" <[hidden email]>
> À: "Vincent Rouvreau" <[hidden email]>
> Envoyé: Lundi 24 Novembre 2014 17:32:15
> Objet: Re: Help with 'filtration' and 'filtration_with_alpha_values'
>
>
>
> Replace your piece of code (after //i'm not sure if this is the correct way
> to access the filtration) with:
>   std::list<CGAL::Object>       objects;
>   as.filtration(std::back_inserter(objects));
>   std::cout << "filtration returns : " << objects.size() << " objects" <<
> std::endl;
>   std::list<CGAL::Object>::iterator pos;
>   pos = objects.begin();
>   while (pos != objects.end()){
>           pos++;
>   }
>
>
> You can see with as.get_alpha_shape_cells/facets/edges that your alpha shape
> has been modified.
> For filtration_with_alpha_values, you can try something like this :
>   std::vector<CGAL::Object> the_objects;
>   std::vector<Alpha_shape_3::FT> the_ft;
>
>   typedef CGAL::Dispatch_output_iterator<
>     CGAL::cpp11::tuple<CGAL::Object, Alpha_shape_3::FT>,
>     CGAL::cpp11::tuple<std::back_insert_iterator&lt;
> std::vector&lt;CGAL::Object> >,
>                        std::back_insert_iterator<
> std::vector<Alpha_shape_3::FT> >
>                        > > Dispatch;
>
>   Dispatch disp = CGAL::dispatch_output<CGAL::Object, Alpha_shape_3::FT>(
>     std::back_inserter(the_objects),
>     std::back_inserter(the_ft));
>
>   as.filtration_with_alpha_values(disp);
>
>
> You can see with as.get_alpha_shape_cells/facets/edges that your alpha shape
> has been modified.
>
> Hope this can help,
> Regards
>
>
>
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