CGAL 5.3 - 2D Arrangements
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#include <CGAL/Arr_tags.h>
All the four types Left_side_category
, Right_side_category
, Bottom_side_category
, and Top_side_category
nested in any model of the concept ArrangementOpenBoundaryTraits
must be convertible to Arr_open_side_tag
, which derives from Arr_oblivious_side_tag
.
It implies that some curves are expected to approach the left, right, bottom, or top sides of the open boundary of the parameter space. Arr_open_side_tag
is an empty construct used for dispatching functions based on type of curves that induce the arrangement.