Roger House wrote:

> I encountered a problem with Polygon_2::bbox which I believe I have

> fixed, but I would like confirmation. Unfortunately, I have not been

> able to devise a small program which demonstrates the problem, and I am

> unable to send the larger program in which the problem arose. However,

> the context was this:

>

> static bool some_func(const CGAL_Polygon &poly)

> {

> CGAL_Bbox bbox = poly.bbox();

> ...

> }

>

> The call of poly.bbox resulted in the error message at the end of this

> email, in which line 234 of Polygon_2.h is mentioned. The return

> statement in the following function is line 234 of Polygon_2.h:

>

> Bbox_2 bbox() const

> {

> return bbox_2(d_container.begin(), d_container.end());

> }

>

> After looking at some of the nearby code in Polygon_2.h, I made a wild

> guess and added a third parameter:

>

> return bbox_2(d_container.begin(), d_container.end(), traits);

>

> This not only compiled, but it seems to be working.

>

> Please let me if this fix is okay.

Well, no, the code is supposed to be correct.

I can't think of a reason why you see what you see.

Please provide more context if possible.

> Thank you,

>

> Roger House

>

> /usr/include/CGAL/Polygon_2.h: In member function ‘CGAL::Bbox_2

> CGAL::Polygon_2<Traits_, Container_>::bbox() const [with Traits_P =

> CGAL::Cartesian<double>, Container_P =

> std::vector<CGAL::Point_2<CGAL::Cartesian<double> >,

> std::allocator<CGAL::Point_2<CGAL::Cartesian<double> > > >]’:

> connhole.cpp:320: instantiated from here

> /usr/include/CGAL/Polygon_2.h:234: error: no matching function for call

> to ‘bbox_2(__gnu_cxx::__normal_iterator<const

> CGAL::Point_2<CGAL::Cartesian<double> >*,

> std::vector<CGAL::Point_2<CGAL::Cartesian<double> >,

> std::allocator<CGAL::Point_2<CGAL::Cartesian<double> > > > >,

> __gnu_cxx::__normal_iterator<const CGAL::Point_2<CGAL::Cartesian<double>

> >*, std::vector<CGAL::Point_2<CGAL::Cartesian<double> >,

> std::allocator<CGAL::Point_2<CGAL::Cartesian<double> > > > >)’

--

Sylvain Pion

INRIA Sophia-Antipolis

Geometrica Project-Team

CGAL,

http://cgal.org/