CGAL users discussion list

[Daniel Abler <>]

Dear Andreas,

Thanks a lot! Your hint at instantiation with 'new' solved the problem.

daniel


On Wednesday 27 May 2015 08.26:41 Andreas Fabri wrote:
> What you write would hold for any class.
> 
> for(...){
> 
>   std::vector<int> V = FunctionThatCreatesAVector()
> 
>   std::cout << &v << std::endl;
> }
> 
> Your FunctionThatCreatesAVector()
> should  create a vector<int> with new
> and then return the pointer.
> 
> andreas
> 
> 
> On 27/05/2015 07:55, Daniel Abler wrote:
> > Dear List,
> >
> > I would like to create a list of pointers to Polyhedron_3 objects 
> > (created in a loop) for later meshing via Polyhedral_mesh_domain_3, as in 
> > the following pseudocode:
> >
> > struct K: public CGAL::Exact_predicates_inexact_constructions_kernel {};
> > typedef CGAL::Polyhedron_3<K>         Polyhedron;
> > [...]
> >
> > std::list<Polyhedron*> poly_pointer_list;
> >
> > for (...)
> > {
> >     [...]
> >     Polyhedron  cgalpoly = 
> > FunctionThatCreatesCgalPolyhedronFromVTKPolyData;
> >     poly_pointer_list.push_back(&cgalpoly);
> > }
> >
> > The problem here is that &cgalpoly always points to the same address... I 
> > suspect this has to do with the 'copy constructor' of Polyhedron_3 or my  
> > 'FunctionToCreateCgalPolyhedronFromVTKPolyData'.
> >
> > How can I make sure that each cgalpoly created in the loop is kept in 
> > memory and can be addressed by an unique pointer?
> >
> > Many thanks,
> > Daniel
> >
> >
> >
> 
>