CGAL users discussion list

[Priyanshi Kumari <>]

Thanks

On Fri, May 11, 2018 at 3:38 PM, Andreas Fabri <> wrote:

As it is boost::tie looking up the documentation might help.

vertices() returns a std::pair

boost::tie  takes first and second out of the pair and ties it to the two variables.

It is in fact more general, that is it works for any tuple.

andreas

On 5/11/2018 12:00 PM, Priyanshi Kumari wrote:

Also

what does    "boost::tie(vb,ve) = vertices(mesh) " do?

where mesh is a Polyhedron

typedef CGAL::Simple_cartesian<double>                                   Kernel;

typedef CGAL::Polyhedron_3<Kernel,CGAL::Polyhedron_items_with_id_3>  Polyhedron;

On Fri, May 11, 2018 at 3:10 PM, Andreas Fabri <> wrote:

-------- Forwarded Message --------

Subject:	Re: [cgal-discuss] CGAL::cpp11::next(vb,ve)
Date:	Fri, 11 May 2018 10:30:28 +0200
From:	Andreas Fabri <>
To:	iampriyanshi <>

It applies 47 times  operator++  to the iterator.

andreas

On 5/11/2018 10:23 AM, iampriyanshi wrote:

What does the below statement do?
*CGAL::cpp11::next(vb, 47)

where 
typedef boost::graph_traits<Polyhedron>::vertex_iterator              
vertex_iterartor 
vertex_iterator vb;

Code:
https://doc.cgal.org/latest/Surface_mesh_deformation/Surface_mesh_deformation_2k_ring_roi_translate_rotate_example_8cpp-example.html



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Kind regards,

PRIYANSHI

-- 
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project

phone: +33.492.954.912    skype: andreas.fabri

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Kind regards,

PRIYANSHI