Osmium::Geometry Namespace Reference

Geometry classes such as for points, linestrings, and polygons. More...

Classes
class	FromWay
class	LineString
class	MultiPolygon
class	Null
class	Point
class	Polygon
struct	StreamFormat
class	Geometry
class	LonLatListWriter
Enumerations
enum	wkbGeometryType {   wkbPoint = 1, wkbLineString = 2, wkbPolygon = 3, wkbMultiPoint = 4,   wkbMultiLineString = 5, wkbMultiPolygon = 6, wkbGeometryCollection = 7, wkbSRID = 0x20000000 }
enum	wkbByteOrder { wkbXDR = 0, wkbNDR = 1 }
Functions
geos::geom::GeometryFactory *	geos_geometry_factory ()
template<typename T >
std::ostream &	operator<< (std::ostream &out, StreamFormat< T > format)
template<typename T >
void	write_binary (std::ostream &out, const T value)
template<typename T >
void	write_hex (std::ostream &out, const T value)
void	write_binary_wkb_header (std::ostream &out, bool with_srid, uint32_t type)
void	write_hex_wkb_header (std::ostream &out, bool with_srid, uint32_t type)
Variables
const int	srid = 4326
	OSM data always uses SRID 4326 (WGS84).

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Detailed Description

Geometry classes such as for points, linestrings, and polygons.

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Enumeration Type Documentation

enum Osmium::Geometry::wkbByteOrder

Byte order marker in WKB geometry.

Enumerator:

wkbXDR
wkbNDR

enum Osmium::Geometry::wkbGeometryType

Type of WKB geometry. These definitions are from 99-049_OpenGIS_Simple_Features_Specification_For_SQL_Rev_1.1.pdf (for WKB) and http://trac.osgeo.org/postgis/browser/trunk/doc/ZMSgeoms.txt (for EWKB). They are used to encode geometries into the WKB format.

Enumerator:

wkbPoint
wkbLineString
wkbPolygon
wkbMultiPoint
wkbMultiLineString
wkbMultiPolygon
wkbGeometryCollection
wkbSRID

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Function Documentation

geos::geom::GeometryFactory* Osmium::Geometry::geos_geometry_factory

(

)

Return pointer to a static GEOS GeometryFactory object created the first time this function is run. This is used by all functions in Osmium that need to create GEOS geometries.

template<typename T >

std::ostream& Osmium::Geometry::operator<<	(	std::ostream &	out,
		StreamFormat< T >	format
	)

Output operator for StreamFormat.

template<typename T >

void Osmium::Geometry::write_binary	(	std::ostream &	out,
		const T	value
	)		[inline]

Write a value as binary to an output stream.

Template Parameters:

T	Type of value.

void Osmium::Geometry::write_binary_wkb_header	(	std::ostream &	out,
		bool	with_srid,
		uint32_t	type
	)		[inline]

Write header of WKB data structure as binary to output stream. The header contains:

• the byte order marker
• the geometry type
• (optionally) the SRID

template<typename T >

void Osmium::Geometry::write_hex	(	std::ostream &	out,
		const T	value
	)		[inline]

Write a value as hex encoding of binary to an output stream.

Template Parameters:

T	Type of value.

void Osmium::Geometry::write_hex_wkb_header	(	std::ostream &	out,
		bool	with_srid,
		uint32_t	type
	)		[inline]

Write header of WKB data structure as hex encoding of binary to output stream. The header contains:

• the byte order marker
• the geometry type
• (optionally) the SRID

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Variable Documentation

const int Osmium::Geometry::srid = 4326

OSM data always uses SRID 4326 (WGS84).