A geographic (ellipsoidal) 2d linear ring. More...

#include <geometries_cs.h>

Inheritance diagram for gis::Geographic_linearring:

Public Member Functions
Geometry_type	type () const override
	Gets the geometry type of the object. More...

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...

bool	is_empty () const override
	Check if this is an empty geometry. More...

void	push_back (const gis::Point &pt) override
	Adds a point to the end of the linestring. More...

void	push_back (gis::Point &&pt) override

void	pop_front () override
	Removes a point from the front of the linestring. More...

bool	empty () const override
	Checks if the linestring is empty. More...

std::size_t	size () const override
	Returns the size of (number of points in) the linestring. More...

void	clear () noexcept override
	Removes all points from the linestring. More...

Geographic_linestring *	clone () const override
	This implementation of clone() uses a broader return type than other implementations. More...

Geographic_point &	back () override
	Returns the last point of the linestring. More...

const Geographic_point &	back () const override

Geographic_point &	front () override
	Returns the first point of the linestring. More...

const Geographic_point &	front () const override

Geographic_point &	operator[] (std::size_t i) override

const Geographic_point &	operator[] (std::size_t i) const override

Public Member Functions inherited from gis::Geographic_linestring
	Geographic_linestring ()

void	resize (std::size_t count)

iterator	begin () noexcept

const_iterator	begin () const noexcept

iterator	end () noexcept

const_iterator	end () const noexcept

Public Member Functions inherited from gis::Geometry
	Geometry ()=default

virtual	~Geometry ()=default

	Geometry (const Geometry &)=default

Geometry &	operator= (const Geometry &)=default

Additional Inherited Members
Public Types inherited from gis::Geographic_linestring
typedef decltype(m_points) ::value_type	value_type

typedef decltype(m_points) ::iterator	iterator

typedef decltype(m_points) ::const_iterator	const_iterator

Static Public Member Functions inherited from gis::Linestring
static Linestring *	create_linestring (Coordinate_system coordinate_system)
	Creates a subclass of Linestring from a Coordinate_system. More...

Static Public Member Functions inherited from gis::Linearring
static Linearring *	create_linearring (Coordinate_system coordinate_system)
	Creates a subclass of Linearring from a Coordinate_system. More...

Protected Attributes inherited from gis::Geographic_linestring
std::vector< Geographic_point, Malloc_allocator< Geographic_point > >	m_points
	String of points constituting the linestring. More...

Detailed Description

A geographic (ellipsoidal) 2d linear ring.

Member Function Documentation

◆ accept()

bool gis::Geographic_linearring::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::Linearring.

◆ back() [1/2]

const Geographic_point & gis::Geographic_linearring::back ( ) const

inlineoverridevirtual

Reimplemented from gis::Geographic_linestring.

◆ back() [2/2]

Geographic_point & gis::Geographic_linearring::back ( )

inlineoverridevirtual

Returns the last point of the linestring.

Returns: Last point of linestring

Reimplemented from gis::Geographic_linestring.

◆ clear()

void gis::Geographic_linearring::clear ( )

inlineoverridevirtualnoexcept

Removes all points from the linestring.

Reimplemented from gis::Geographic_linestring.

◆ clone()

Geographic_linestring * gis::Geographic_linearring::clone ( ) const

inlineoverridevirtual

This implementation of clone() uses a broader return type than other implementations.

This is due to the restraint in some compilers, such as cl.exe, that overriding functions with ambiguous bases must have covariant return types.

Reimplemented from gis::Geographic_linestring.

◆ coordinate_system()

Coordinate_system gis::Geographic_linearring::coordinate_system ( ) const

inlineoverridevirtual

Gets the coordinate system.

Returns: The coordinate system type.

Reimplemented from gis::Geographic_linestring.

◆ empty()

bool gis::Geographic_linearring::empty ( ) const

inlineoverridevirtual

Checks if the linestring is empty.

Here, the definition of empty is that the linestring does not contain any points. An invalid linestring with only one coordinate is not empty.

Return values

true	The linestring is empty.
false	The linestring is not empty.

Reimplemented from gis::Geographic_linestring.

◆ front() [1/2]

const Geographic_point & gis::Geographic_linearring::front ( ) const

inlineoverridevirtual

Reimplemented from gis::Geographic_linestring.

◆ front() [2/2]

Geographic_point & gis::Geographic_linearring::front ( )

inlineoverridevirtual

Returns the first point of the linestring.

Returns: First point of linestring

Reimplemented from gis::Geographic_linestring.

◆ is_empty()

bool gis::Geographic_linearring::is_empty ( ) const

inlineoverridevirtual

Check if this is an empty geometry.

The definition of empty geometries is the one in SFA-CA (OGC 06-103r4, Sect. 6.1.2.2), i.e., an empty point set.

Note: This is different from the function "empty", which returns true if a geometry contains no subgeometries. E.g., a geometry collection may contain another geometry collection which is empty. In this case, the "empty" function would return false on the outermost geometry collection, while "is_empty" would return true.

Return values

true	The geometry represents the empty point set.
false	The geometry represent a non-empty point set.

Reimplemented from gis::Linestring.

◆ operator[]() [1/2]

const Geographic_point & gis::Geographic_linearring::operator[] ( std::size_t i ) const

inlineoverridevirtual

Reimplemented from gis::Geographic_linestring.

◆ operator[]() [2/2]

Geographic_point & gis::Geographic_linearring::operator[] ( std::size_t i )

inlineoverridevirtual

Reimplemented from gis::Geographic_linestring.

◆ pop_front()

void gis::Geographic_linearring::pop_front ( )

inlineoverridevirtual

Removes a point from the front of the linestring.

Reimplemented from gis::Geographic_linestring.

◆ push_back() [1/2]

void gis::Geographic_linearring::push_back ( const gis::Point & pt )

inlineoverridevirtual

Adds a point to the end of the linestring.

Parameters

pt	The point to add.

Reimplemented from gis::Geographic_linestring.

◆ push_back() [2/2]

void gis::Geographic_linearring::push_back ( gis::Point && pt )

inlineoverridevirtual

Reimplemented from gis::Geographic_linestring.

◆ size()

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

inlineoverridevirtual

Returns the size of (number of points in) the linestring.

Returns: Number of points in the linestring.

Reimplemented from gis::Geographic_linestring.

◆ type()

Geometry_type gis::Geographic_linearring::type ( ) const

inlineoverridevirtual

Gets the geometry type of the object.

Returns: The type of this object

Reimplemented from gis::Linestring.

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

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

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ accept()

◆ back() [1/2]

◆ back() [2/2]

◆ clear()

◆ clone()

◆ coordinate_system()

◆ empty()

◆ front() [1/2]

◆ front() [2/2]

◆ is_empty()

◆ operator[]() [1/2]

◆ operator[]() [2/2]

◆ pop_front()

◆ push_back() [1/2]

◆ push_back() [2/2]

◆ size()

◆ type()