CGAL users discussion list

[朱涛 <>]

Dear all,

I want to build a surface mesh(sphere surface for example) in 3D 
coordinate using 2D Triangulation Data Structure, But I encounter a 
problem.

If I use the following definition, the compiler shows error C2039: it 
can not acquire z-coordinate.

typedef CGAL::Triangulation_vertex_base_2<K>    Vb;
typedef CGAL::Triangulation_face_base_2<K>   Fb;
typedef CGAL::Triangulation_data_structure_2<Vb, Fb> Tds;

If I use the following definition, The compile can not recognise "Tds".

typedef CGAL::Triangulation_ds_vertex_base_2<Tds>    Vb;
typedef CGAL::Triangulation_ds_face_base_2<Tds>   Fb;
typedef CGAL::Triangulation_data_structure_2<Vb, Fb> Tds;

I notice that 21.3.2 in cgal_manual mentions "The cyclic dependancy of 
template parameters", but I do not know how to use it. Please help me. 

Thank you!

Best regards!

Tao Zhu
Department of Mechanics and Engineering Science
School of Engineering
Peking University,Beijing 100871,P.R.China
Tel: 86-10-5276-2447
E-mail: