CGAL users discussion list

[houssen <>]

Hello,

I am new to CGAL. I try to write a print_polyhedron method in the same 
spirit than the print_polygon method one can find here : 
https://github.com/CGAL/cgal/blob/master/Minkowski_sum_2/examples/Minkowski_sum_2/print_utils.h.

Can't get out of this error :
error: ‘Halfedge_around_facet_const_circulator’ in 
‘Polyhedron_3_Facet_iterator {aka class 
CGAL::internal::In_place_list_const_iterator<CGAL::HalfedgeDS_in_place_list_face<CGAL::I_Polyhedron_facet<CGAL::HalfedgeDS_face_base<CGAL::HalfedgeDS_list_types<CGAL::Epeck, 
CGAL::I_Polyhedron_derived_items_3<CGAL::Polyhedron_items_3>, 
std::allocator<int> >, CGAL::Boolean_tag<true>, 
CGAL::Plane_3<CGAL::Epeck> > > >, 
std::allocator<CGAL::HalfedgeDS_in_place_list_face<CGAL::I_Polyhedron_facet<CGAL::HalfedgeDS_face_base<CGAL::HalfedgeDS_list_types<CGAL::Epeck, 
CGAL::I_Polyhedron_derived_items_3<CGAL::Polyhedron_items_3>, 
std::allocator<int> >, CGAL::Boolean_tag<true>, 
CGAL::Plane_3<CGAL::Epeck> > > > > >}’ does not name a type
 typedef 
Polyhedron_3_Facet_iterator::Halfedge_around_facet_const_circulator 
Polyhedron_3_Halfedge_around_facet_circulator;

Could somebody help ? (either on compilation error, or print_polyhedron 
code)

Franck

Note : I use CGAL-4.7 built from source on Ubuntu-14.04.
#include <iostream>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Point_3.h>
#include <CGAL/Polyhedron_3.h>

typedef CGAL::Exact_predicates_exact_constructions_kernel                   Kernel;

typedef CGAL::Point_3<Kernel>                                               Point_3;

typedef CGAL::Polyhedron_3<Kernel>                                          Polyhedron_3;
typedef Polyhedron_3::Facet_const_iterator                                  Polyhedron_3_Facet_iterator;
typedef Polyhedron_3_Facet_iterator::Halfedge_around_facet_const_circulator Polyhedron_3_Halfedge_around_facet_circulator;

void print_polyhedron (const Polyhedron_3& P)
{
  std::cout << "[ ";

  for (Polyhedron_3_Facet_iterator fit = P.facets_begin(); fit != P.facets_end(); ++fit) {
  //  for (Polyhedron_3_Halfedge_around_facet_circulator eit = fit->facet_begin(); eit != fit->facet_begin(); ++eit) {
  //    std::cout << " (" << fit << ')';
  //  }
  }

  std::cout << " ]";
}

int main ()
{
  Polyhedron_3 P;
  Point_3 P1 (-1, -1, 0);
  Point_3 P2 ( 1, -1, 0);
  Point_3 P3 ( 1,  1, 0);
  Point_3 P4 (-1,  1, 0);
  P.make_triangle (P1, P2, P3);
  P.make_triangle (P1, P3, P4);
  std::cout << "Polygon P = "; print_polyhedron (P); std::cout << std::endl;
  return 0;
}
# Created by the script cgal_create_cmake_script
# This is the CMake script for compiling a CGAL application.


project( 02.cgal_ )

cmake_minimum_required(VERSION 2.8.10)

find_package(CGAL QUIET COMPONENTS Core )

if ( CGAL_FOUND )

  include( ${CGAL_USE_FILE} )

  include( CGAL_CreateSingleSourceCGALProgram )

  create_single_source_cgal_program( "cgal.cpp" )

else()
  
    message(STATUS "This program requires the CGAL library, and will not be 
compiled.")
  
endif()