CGAL users discussion list

[Martin Baeker <>]

Dear efi,

I'm really sorry for being too stupid by half, but I just cannot find
where the release notes are.  
Are they in the manual somewhere? I
could find neither a chapter nor an index entry called release notes.

Sorry for being a bother,

Martin.

> Dear Martin,
> 
> The interface went through a few more changes since the last time you were
> using it. For starters, the 'arr.insert[_blah](...)' member functions were
> replaced by corresponding free functions 'insert[_blah](arr, ...)'. All
> differences are listed in the release notes. The manual was enhanced, and 
> many
> examples were introduced including some that show how to construct and
> maintain arrangements with history.
> 
> Martin Baeker wrote:
> > Dear Efi,
> >
> > probably I am doing something stupid, but it still does not
> > work. Here's the full program, copied almost directly from the 3.1
> > manual and replacing Arrangement_2 with Arrangement_with_history_2:
> >
> > #include <iostream>
> > // CGAL stuff
> > #include <CGAL/Cartesian.h>
> > #include <CGAL/Quotient.h>
> > #include <CGAL/MP_Float.h>
> > #include <CGAL/Point_2.h>
> > #include <CGAL/enum.h>
> > #include <CGAL/intersections.h>
> > #include <CGAL/Arr_segment_traits_2.h>
> > #include <CGAL/Arr_default_dcel.h>
> > #include <CGAL/Arrangement_with_history_2.h>
> >
> > typedef CGAL::Quotient<CGAL::MP_Float>                      NT;
> > typedef CGAL::Cartesian<NT>                                 TutorialR;
> > typedef CGAL::Arr_segment_traits_2<TutorialR>                  Traits;
> > typedef Traits::Point_2                                 Point_2;
> > typedef Traits::Curve_2                                 Curve_2;
> > typedef Traits::X_monotone_curve_2                      
> > X_monotone_curve_2;
> >
> > typedef CGAL::Arrangement_with_history_2<Traits> Arr_2;
> > int main() {
> >   Arr_2 arr;
> >   //insertion of the curves
> >   arr.insert(Curve_2(Point_2(0, 0), Point_2(1, 1)));
> >   arr.insert(Curve_2(Point_2(0, 1), Point_2(1, 0))); //traversal of the
> >   curves
> >   Arr_2::Curve_iterator cit;
> >   Arr_2::Edge_iterator eit;
> >   for (cit = arr.curve_node_begin(); cit != arr.curve_node_end(); ++cit) {
> >     std::cout << std::endl << "Curve level:" << std::endl << cit->curve()
> >               << std::endl ;
> >     std::cout << "Edge level:" << std::endl;
> >
> >     //traversal of the edges of the current curve
> >     for (eit = cit->edges_begin(); eit != cit->edges_end(); ++eit) {
> >       std::cout << eit->x_curve() << std::endl ;
> >     }
> >   }
> >   return 0;
> > }
> >
> >
> > Still, when I'm trying to compile this, I get the same error messages as
> > before:
> >
> > minitest.C:26: Fehler: »class Arr_2« hat kein Element namens »insert«
> > minitest.C:27: Fehler: »class Arr_2« hat kein Element namens »insert«
> > minitest.C:31: Fehler: »class Arr_2« hat kein Element namens
> > »curve_node_begin«
> > minitest.C:31: Fehler: »class Arr_2« hat kein Element namens 
> > »curve_node_end
> > «
> > minitest.C:33: Fehler: »class
> > CGAL::Arrangement_with_history_2<CGAL::Arr_segment_traits_2<CGAL::Cartesian<CGAL::Quotient<CGAL::MP_Float>
> > > >,
> > CGAL::Arr_default_dcel<CGAL::Arr_segment_traits_2<CGAL::Cartesian<CGAL::Quotient<CGAL::MP_Float>
> > > > > >::Curve_halfedges« hat kein Element namens »curve«
> > ...
> >
> > If you have any hint what I am doing wrong, I'd be grateful.
> >
> > Thanks a lot,
> >
> > Martin.
> >
> >
> >
> >   
> > > The functionality to are referring to (iterating over the curves) has
> > > been preserved, but it is part of the arrangement with history data
> > > structure. In the past We use to have Planar_map_2 and Arrangement_2.
> > > These were replaced by Arrangement_2 and Arrangement_with_history_2, so
> > > simply define the type Arr_2 to be Arrangement_with_history_2<...>
> > >
> > > Martin Baeker wrote:
> > >     
> > > > Dear experts,
> > > >
> > > > I am currently updating my code from version 3.1 to 3.3.1.
> > > >
> > > > In between, the Arrangement_2-class has changed drastically and I am
> > > > missing the old possibility of iterating over the curves of an
> > > > Arrangement:
> > > >
> > > > Old code (taken almost directly from the 3.1 manual)
> > > >
> > > > Arr_2 pm;
> > > > // Trial: Insert the segments one by one
> > > > pm.insert(seglist.begin(), seglist.end());
> > > > for (unsigned int i=0; i< seglist.size(); i++)
> > > >      pm.insert_curve(seglist[i]);
> > > > std::cout << "\n\nWriting pm's halfedges" << std::endl;
> > > > Arr_2::Edge_iterator eit;
> > > > Arr_2::Curve_iterator cit;
> > > > unsigned int edgeCounter=0;
> > > > for (cit = pm.curve_node_begin(); cit != pm.curve_node_end(); ++cit) 
> > > >   {
> > > >      std::cout << std::endl << "Curve level:" << std::endl <<
> > > >      cit->curve()
> > > >                << std::endl ;
> > > >     std::cout << "Edge level:" << std::endl;
> > > >     edgeCounter++;
> > > >      for (eit = cit->edges_begin(); eit != cit->edges_end(); ++eit) {
> > > >        std::cout << eit->x_curve() << std::endl ;
> > > >      }
> > > >   }
> > > >
> > > > However, this does not work anymore because there is no
> > > > Arr_2::Curve_iterator class anymore. I searched through the Docs but
> > > > could not find how this can be replaced with another iterator.
> > > > Is it still possible to traverse the Curves of an Arrangement?
> > > >
> > > > Thanks a lot in advance,
> > > >
> > > > Martin.
> > > >  
> > > >
> > > >                    Priv.-Doz. Dr. Martin Bäker
> > > >                    Institut für Werkstoffe
> > > >                    Technische Universität Braunschweig
> > > >                    Langer Kamp 8
> > > >                    38106 Braunschweig
> > > >                    Germany
> > > >                    Tel.: 00-49-531-391-3073
> > > >                    Fax   00-49-531-391-3058
> > > >                    e-mail 
> > > > <>--
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> > >     
> >
> >                    Priv.-Doz. Dr. Martin Bäker
> >                    Institut für Werkstoffe
> >                    Technische Universität Braunschweig
> >                    Langer Kamp 8
> >                    38106 Braunschweig
> >                    Germany
> >                    Tel.: 00-49-531-391-3073
> >                    Fax   00-49-531-391-3058
> >                    e-mail 
> > <>--
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> 

                   Priv.-Doz. Dr. Martin Bäker
                   Institut für Werkstoffe
                   Technische Universität Braunschweig
                   Langer Kamp 8
                   38106 Braunschweig
                   Germany
                   Tel.: 00-49-531-391-3073
                   Fax   00-49-531-391-3058
                   e-mail 
<>