CGAL users discussion list

["Merlin Etzold" <>]

Dear Andreas,

That looks very helpful - thank you very much! I will give it a try!

Best wishes,

Merlin :) 

-----Original Message-----
From: 

 
[mailto:]
 On Behalf Of Andreas Fabri
Sent: 05 April 2016 10:30
To: 

Subject: Re: [cgal-discuss] "Facet-vise" distortion of a Polyhedron_3

Hello,

You can use
http://doc.cgal.org/4.8/BGL/group__PkgBGLIterators.html#ga7746cb7b28520877375dfff6ec7bd32c

as follows:

typedef boost::graph_traits<Polyhedron>::vertex_descriptor
   vertex_descriptor;
typedef boost::graph_traits<Polyhedron>::face_descriptor
   face_descriptor;

Polyhedron P;

BOOST_FOREACH(face_descriptor fd, faces(P)){
   BOOST_FOREACH(vertex_descriptor vd,
                 CGAL::vertices_around_face(halfedge(fd,P),P)){
     std::cout << vd->point() << std::endl;
   }
}

andreas

On 05/04/2016 11:22, Merlin Etzold wrote:
> Dear All,
>
> I have 3D Polyhedra which I want to represent as Polyhedron_3 which 
> shall represent growing shapes. To simulate the growth process I want 
> to shift individual facets along their normal direction. My strategy 
> to do this is to access the vertices belong to the facets and apply a 
> translation them towards the desired direction.
>
> However, as an inexperienced CGAL user I struggle a bit finding the 
> best strategy to access the vertices belonging to the neighbouring 
> facets. Is there an easy way to get an iterator for the vertices belonging 
> to a facet?
>
> Thank you and best wishes,
> Merlin
>

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

phone: +33.492.954.912    skype: andreas.fabri

--
You are currently subscribed to cgal-discuss.
To unsubscribe or access the archives, go to 
https://sympa.inria.fr/sympa/info/cgal-discuss