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[Guilherme Kunigami <>]

The following example constructs an arrangement with three circles:

http://www.cgal.org/Manual/3.4/examples/Arrangement_on_surface_2/circles.cpp

Then I used the code in 'examples/Arrangement_on_surface_2/arr_print.h' to print the arrangement. I'm interested in the output of the 'he->curve' in the code below (from arr_print.h):

===
void print_ccb (Arrangement_2::Ccb_halfedge_const_circulator circ)
{
  Ccb_halfedge_const_circulator curr = circ;
  std::cout << "(" << curr->source()->point() << ")";

  do {
    Arrangement_2::Halfedge_const_handle he = curr->handle();
    std::cout << "   [" << he->curve() << "]   "
              << "(" << he->target()->point() << ")";

  } while (++curr != circ);
  std::cout << std::endl;
}
===
'cout << he->curve()' prints the circle to which the arc belongs and then the endpoints. I would like to extract such information from he->curve(). If I understood well, the return type of he->curve is 'Arrangement_2::X_monotone_curve_2', but I couldn't find the documentation for it.

Could someone help me?

Thanks,
-- 
Guilherme Kunigami