gis::Geographic_polygon Class Reference

A geographic (ellipsoidal) 2d polygon. More...

#include <geometries_cs.h>

Inheritance diagram for gis::Geographic_polygon:

Public Member Functions
	Geographic_polygon ()
Coordinate_system	coordinate_system () const override
	Gets the coordinate system. More...
bool	accept (Geometry_visitor *v) override
	Applies a hierarchical visitor to this geometry. More...
void	push_back (const Linearring &lr) override
	Adds a linear ring to the polygon. More...
void	push_back (Linearring &&lr) override
bool	empty () const override
	Checks if the polygon is empty. More...
Geographic_polygon *	clone () const override
decltype(m_interior_rings) &	interior_rings ()
	Get list of interior rings. More...
decltype(m_interior_rings) const &	const_interior_rings () const
	Get list of interior rings. More...
std::size_t	size () const override
	Returns the size of the polygon. More...
Geographic_linearring &	geographic_exterior_ring () const
	Get the exterior ring. More...
Linearring &	exterior_ring () override
	Returns the exterior ring of the polygon. More...
Linearring &	interior_ring (std::size_t n) override
	Returns an interior ring of the polygon. More...
Public Member Functions inherited from gis::Polygon
Geometry_type	type () const override
	Gets the geometry type of the object. More...
bool	is_empty () const override
	Check if this is an empty geometry. More...
Public Member Functions inherited from gis::Geometry
	Geometry ()=default
virtual	~Geometry ()=default
	Geometry (const Geometry &)=default
Geometry &	operator= (const Geometry &)=default

Private Attributes
Geographic_linearring	m_exterior_ring
	Exterior ring. More...
std::vector< Geographic_linearring, Malloc_allocator< Geographic_linearring > >	m_interior_rings
	Interior rings (holes). More...

Additional Inherited Members
Static Public Member Functions inherited from gis::Polygon
static Polygon *	create_polygon (Coordinate_system coordinate_system)
	Creates a subclass of Polygon from a Coordinate_system. More...

Detailed Description

A geographic (ellipsoidal) 2d polygon.

Constructor & Destructor Documentation

Geographic_polygon()

gis::Geographic_polygon::Geographic_polygon ( )

inline

Member Function Documentation

accept()

bool gis::Geographic_polygon::accept ( Geometry_visitor *  v )

overridevirtual

Applies a hierarchical visitor to this geometry.

See also

gis::Geometry_visitor

Parameters

v	A hierarchical visitor.

Return values

true	The execution was aborted by the visitor.
false	The execution completed.

Implements gis::Polygon.

clone()

Geographic_polygon * gis::Geographic_polygon::clone ( ) const

inlineoverridevirtual

Implements gis::Polygon.

const_interior_rings()

decltype(m_interior_rings) const & gis::Geographic_polygon::const_interior_rings

(

)

const

Get list of interior rings.

This function is used by the interface to Boost.Geometry.

Returns

The list of interior rings

coordinate_system()

Coordinate_system gis::Geographic_polygon::coordinate_system ( ) const

inlineoverridevirtual

Gets the coordinate system.

Returns

The coordinate system type.

Implements gis::Geometry.

empty()

bool gis::Geographic_polygon::empty ( ) const

overridevirtual

Checks if the polygon is empty.

The polygon is considered empty if it has no rings.

Return values

true	The polygon is empty.
false	The polygon is not empty.

Implements gis::Polygon.

exterior_ring()

Linearring & gis::Geographic_polygon::exterior_ring ( )

inlineoverridevirtual

Returns the exterior ring of the polygon.

Note

If the polygon currently has no exterior ring, an empty one is added.

Returns

The exterior ring.

Implements gis::Polygon.

geographic_exterior_ring()

Geographic_linearring & gis::Geographic_polygon::geographic_exterior_ring

(

)

const

Get the exterior ring.

This function is used by the interface to Boost.Geometry.

Returns

The exterior ring.

interior_ring()

Linearring & gis::Geographic_polygon::interior_ring ( std::size_t  n )

overridevirtual

Returns an interior ring of the polygon.

Parameters

n	Ring number, zero indexed.

Returns

The interior ring.

Implements gis::Polygon.

interior_rings()

decltype(m_interior_rings) & gis::Geographic_polygon::interior_rings

(

)

Get list of interior rings.

This function is used by the interface to Boost.Geometry.

Returns

The list of interior rings

push_back() [1/2]

void gis::Geographic_polygon::push_back ( const Linearring &  lr )

overridevirtual

Adds a linear ring to the polygon.

The first ring will become the exterior ring. All following rings will be interior rings (holes).

Parameters

lr	The linear ring to add.

Implements gis::Polygon.

push_back() [2/2]

void gis::Geographic_polygon::push_back ( Linearring &&  lr )

overridevirtual

Implements gis::Polygon.

size()

std::size_t gis::Geographic_polygon::size ( ) const

overridevirtual

Returns the size of the polygon.

Returns

Number of rings in the polygon (exterior + interior).

Implements gis::Polygon.

Member Data Documentation

m_exterior_ring

Geographic_linearring gis::Geographic_polygon::m_exterior_ring

private

Exterior ring.

m_interior_rings

std::vector<Geographic_linearring, Malloc_allocator<Geographic_linearring> > gis::Geographic_polygon::m_interior_rings

private

Interior rings (holes).

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The documentation for this class was generated from the following files:

• sql/gis/geometries_cs.h
• sql/gis/geometries.cc