ArrTraits::BoundaryInX_2

Refines

Functor

Has Models

ArrangementBasicTraits_2::Boundary_in_x_2

Boundary_type fo ( ArrTraits::X_monotone_curve_2 xc , Curve_end ce )
determines if the x-coordinate of the minimal end (or maximal end) of xc is infinite. It returns MINUS_INFINITY or PLUS_INFINITY if the curve end is infinite in x, and NO_BOUNDARY if it has a finite x-coordinate.