CGAL users discussion list

[Mariette Yvinec <>]

The function
template <class C2t3>
bool output_surface_facets_to_off (std::ostream& os,
                   const C2t3& c2t3,
                   int options =
                   Surface_mesher::IO_ORIENT_SURFACE)
available in file
CGAL/IO/complex_2_in_triangulation_3_file_writer.h
should do more or less what you want

Le 06/12/11 11:32, phdprav a écrit :
> Dear cgal community,
>
> I am new to CGAL and this should hopefully be a rather simple question. I am
> trying to obtain the vertices and corresponding simplex for a 3D surface
> defined implicitely as a level set function. My starting point is the
> example program mesh_an_implicit_function.cpp
>
> I'd like to modify this program so that it outputs a file with a format
> similar to the one shown below:
>
> VERTEX // Coordinates of the vertices
> 1 0 1  // vertex 0
> 0 -1 0 // vertex 1
> 1 0 0 // vertex 2
> 1 0 -1
> -1 0 0
> 0 1 0
>
> SIMPLEX
> 0 1 2 // triangle 0 made up of vertex 0, 1, 2.
> 1 3 2
> 1 4 3
> 4 5 0
> 0 1 4
> 4 5 3
> 0 5 2
> 5 3 2
>
> So basically all I want is to access the vertices, and to know which
> vertices form which elements, of a given mesh generated by the example code
> mesh_an_implicit_function.cpp. Any advice on how I should go about doing
> this? Thank you.
>
> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/Accessing-vertices-and-simplex-information-tp4164177p4164177.html
> Sent from the cgal-discuss mailing list archive at Nabble.com.

--
Mariette Yvinec
Geometrica project team
INRIA  Sophia-Antipolis