Subject: CGAL users discussion list
List archive
- From: "cdoucet" <>
- To:
- Subject: [cgal-discuss] Cell_handle and cell_iterator
- Date: Wed, 07 May 2014 13:11:44 +0200
Hello,
in a C++ code which uses CGAL, there is a loop like the following:
----------------------------------
for ( std::vector<Cell_handle>::iterator iter = cells.begin(); iter!
=cells.end(); ++iter)
(*iter)->info() +=2;
----------------------------------
I need to store more than one integer in iter.
Thus, I wrote a class MyCell_handle which is a Cell_handle (public
inheritance).
Then, I added a data member, say my_data, and wrote a accessor and a mutator
so that I can write:
----------------------------------
for ( std::vector<MyCell_handle>::iterator iter = cells.begin(); iter!
=cells.end(); ++iter)
{
(*iter)->info() +=2;
iter->my_data() += 2;
}
----------------------------------
However, I do not understand why I access to info with ->, i.e. (*iter)-
>info(), whereas I access to my_data with ., i.e. (*iter).my_data() or
equivalently iter->my_data().
Do you understand why?
After initializing info and my_data, there is a writing in a file with a loop
like this:
--------------------------------------------------------------------------------------------
Finite_cells_iterator iter;
for ( iter=mesh.finite_cells_begin() ; iter != mesh.finite_cells_end() ; +
+iter )
{
int info = iter->info();
file.write((char*)&info,sizeof(info));
}
--------------------------------------------------------------------------------------------
However, I do not see how to access to my_data because I do not see the
relationship between MyCell_handle and Finite_cells_iterator.
Is there a way to acces to my_data?
Thank you very much for your help.
Best regards,
Cédric Doucet
INRIA Paris-Rocquencourt
- [cgal-discuss] Cell_handle and cell_iterator, cdoucet, 05/07/2014
- Re: [cgal-discuss] Cell_handle and cell_iterator, Olivier Devillers, 05/07/2014
- Re: [cgal-discuss] Cell_handle and cell_iterator, Cedric Doucet, 05/07/2014
- Re: [cgal-discuss] Cell_handle and cell_iterator, Olivier Devillers, 05/07/2014
Archive powered by MHonArc 2.6.18.