YMonotonePartitionTraits_2 Concept Reference

Definition

Requirements of a traits class to be used with the function y_monotone_partition_2().

Refines:

PartitionTraits_2

Has Models:

CGAL::Partition_traits_2<R>

Types
In addition to the types defined for the concept PartitionTraits_2, the following types are also required:
typedef unspecified_type	Line_2
typedef unspecified_type	Compare_x_at_y_2
	Predicate object type that provides CGAL::Comparision_result operator()(Point_2 p, Line_2 h) to compare the $x$ coordinate of p and the horizontal projection of p on h.
typedef unspecified_type	Construct_line_2
	Function object type that provides Line_2 operator()(Point_2 p, Point_2 q), which constructs and returns the line defined by the points $p$ and $q$.
typedef unspecified_type	Is_horizontal_2
	Function object type that provides bool operator()(Line_2 l), which returns true iff the line l is horizontal.

Creation
A copy constructor and default constructor are required.
	YMonotonePartitionTraits ()
	YMonotonePartitionTraits (const YMonotonePartitionTraits tr)

Operations
In addition to the functions required for the concept PartitionTraits_2, the following functions that create instances of the above function object types must exist.
Construct_line_2	construct_line_2_object ()
Compare_x_at_y_2	compare_x_at_y_2_object ()
Is_horizontal_2	is_horizontal_2_object ()