CGAL 6.1.1 - 2D Arrangements

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CGAL::Arr_closed_side_tag Struct Reference
Reference Manual » Tags

`#include <CGAL/Arr_tags.h>`

## Definition

This type tag is used to indicate that a side of the parameter space, either left, right, bottom, or top, is closed, and curves that reach this side might be inserted into the arrangement.

More precisely, when this condition occurs at the left, right, bottom, or top side, then the corresponding categories, namely, `Left_side_category`, `Right_side_category`, `Bottom_side_category`, and `Top_side_category`, nested in every geometry traits class, must be convertible to the type `Arr_closed_side_tag`. At this point none of the traits provided with the 2D Arrangements package supports this condition

`Arr_oblivious_side_tag` is an empty construct used for dispatching functions based on type of curves that induce the arrangement.

See also
  `Arr_oblivious_side_tag`
  `Arr_open_side_tag`
  `Arr_contracted_side_tag`
  `Arr_identified_side_tag`
  `AosOpenBoundaryTraits_2`