CGAL::Polygon_with_holes_2< Kernel, Containter > Class Template Reference

#include <CGAL/Polygon_with_holes_2.h>

Inherits from

CGAL::General_polygon_with_holes_2< CGAL::Polygon_2< Kernel, Containter > >.

Definition

template<class Kernel, class Containter = std::vector<typename Kernel::Point_2>>
class CGAL::Polygon_with_holes_2< Kernel, Containter >

The class Polygon_with_holes_2 models the concept GeneralPolygonWithHoles_2.

It represents a linear polygon with holes. It is parameterized with two types (Kernel and Container) that are used to instantiate the type Polygon_2<Kernel,Container>. The latter is used to represents the outer boundary and the boundary of the holes (if any exist).

Is Model Of:

GeneralPolygonWithHoles_2

Examples:

Polygon/draw_polygon_with_holes.cpp, and Stream_support/Polygon_WKT.cpp.

Public Member Functions
	Polygon_with_holes_2 ()
	Default constructor. More...
	Polygon_with_holes_2 (const Base &base)
	Constructor from the base class. More...
	Polygon_with_holes_2 (const Polygon_2 &pgn_boundary)
	Constructor from a polygon. More...
template<class HolesInputIterator >
	Polygon_with_holes_2 (const Polygon_2 &pgn_boundary, HolesInputIterator h_begin, HolesInputIterator h_end)
	Constructor from a polygon (outer boundary) and hole polygons. More...
Bbox_2	bbox () const
	Obtain the bounding box of the polygon with holes.

Related Functions
(Note that these are not member functions.)
template<class Kernel_ , class Container_ >
std::ostream &	operator<< (std::ostream &os, const Polygon_with_holes_2< Kernel_, Container_ > &p)
	This operator exports a polygon with holes to the output stream out. More...
template<class Kernel_ , class Container_ >
std::istream &	operator>> (std::istream &is, Polygon_with_holes_2< Kernel_, Container_ > &p)
	This operator imports a polygon with holes from the input stream in. More...
Related Functions inherited from CGAL::General_polygon_with_holes_2< CGAL::Polygon_2< Kernel, Containter > >
std::ostream &	operator<< (std::ostream &os, const General_polygon_with_holes_2< CGAL::Polygon_2< Kernel, Containter > > &p)
	This operator exports a General_polygon_with_holes_2 to the output stream out. More...
std::istream &	operator>> (std::istream &is, General_polygon_with_holes_2< CGAL::Polygon_2< Kernel, Containter > > &p)
	This operator imports a General_polygon_with_holes_2 from the input stream in. More...

Additional Inherited Members
Public Types inherited from CGAL::General_polygon_with_holes_2< CGAL::Polygon_2< Kernel, Containter > >
typedef CGAL::Polygon_2< Kernel, Containter >	Polygon_2
	polygon without hole type

Constructor & Destructor Documentation

Polygon_with_holes_2() [1/4]

template<class Kernel , class Containter = std::vector<typename Kernel::Point_2>>

CGAL::Polygon_with_holes_2< Kernel, Containter >::Polygon_with_holes_2

(

)

Default constructor.

Polygon_with_holes_2() [2/4]

template<class Kernel , class Containter = std::vector<typename Kernel::Point_2>>

CGAL::Polygon_with_holes_2< Kernel, Containter >::Polygon_with_holes_2

(

const Base &

base

)

Constructor from the base class.

Polygon_with_holes_2() [3/4]

template<class Kernel , class Containter = std::vector<typename Kernel::Point_2>>

CGAL::Polygon_with_holes_2< Kernel, Containter >::Polygon_with_holes_2 ( const Polygon_2 &  pgn_boundary )

explicit

Constructor from a polygon.

Polygon_with_holes_2() [4/4]

template<class Kernel , class Containter = std::vector<typename Kernel::Point_2>>

template<class HolesInputIterator >

CGAL::Polygon_with_holes_2< Kernel, Containter >::Polygon_with_holes_2	(	const Polygon_2 &	pgn_boundary,
		HolesInputIterator	h_begin,
		HolesInputIterator	h_end
	)

Constructor from a polygon (outer boundary) and hole polygons.

Friends And Related Function Documentation

operator<<()

template<class Kernel_ , class Container_ >

std::ostream & operator<< ( std::ostream &  os, const Polygon_with_holes_2< Kernel_, Container_ > &  p  )

related

This operator exports a polygon with holes to the output stream out.

An ASCII and a binary format exist. The format can be selected with the CGAL modifiers for streams, set_ascii_mode() and set_binary_mode() respectively. The modifier set_pretty_mode() can be used to allow for (a few) structuring comments in the output. Otherwise, the output would be free of comments. The default for writing is ASCII without comments.

The number of points of the outer boundary is exported followed by the points themselves in counterclockwise order. Then, the number of holes is exported, and for each hole, the number of points on its outer boundary is exported followed by the points themselves in clockwise order.

operator>>()

template<class Kernel_ , class Container_ >

std::istream & operator>> ( std::istream &  is, Polygon_with_holes_2< Kernel_, Container_ > &  p  )

related

This operator imports a polygon with holes from the input stream in.

Both ASCII and binary formats are supported, and the format is automatically detected.

The format consists of the number of points of the outer boundary followed by the points themselves in counterclockwise order, followed by the number of holes, and for each hole, the number of points of the outer boundary is followed by the points themselves in clockwise order.