osmium::geom::Projection Class Reference

#include <projection.hpp>

Collaboration diagram for osmium::geom::Projection:

Public Member Functions
	Projection (std::string proj_string)
	Projection (const char *proj_string)
	Projection (int epsg)
Coordinates	operator() (osmium::Location location) const
int	epsg () const noexcept
std::string	proj_string () const

Private Attributes
int	m_epsg
std::string	m_proj_string
CRS	m_crs_wgs84 {4326}
CRS	m_crs_user

Detailed Description

Functor that does projection from WGS84 (EPSG:4326) to the given CRS.

If this Projection is initialized with the constructor taking an integer with the epsg code 4326, no projection is done. If it is initialized with epsg code 3857 the Osmium-internal implementation of the Mercator projection is used, otherwise this falls back to using the proj.4 library. Note that this "magic" does not work if you use any of the constructors taking a string.

Deprecated:

Only supports the old PROJ API.

Constructor & Destructor Documentation

Projection() [1/3]

osmium::geom::Projection::Projection ( std::string  proj_string )

inlineexplicit

Projection() [2/3]

osmium::geom::Projection::Projection ( const char *  proj_string )

inlineexplicit

Projection() [3/3]

osmium::geom::Projection::Projection ( int  epsg )

inlineexplicit

Member Function Documentation

epsg()

int osmium::geom::Projection::epsg ( ) const

inlinenoexcept

operator()()

Coordinates osmium::geom::Projection::operator() ( osmium::Location  location ) const

inline

Do coordinate transformation.

Precondition

Location must be in valid range (depends on projection used).

proj_string()

std::string osmium::geom::Projection::proj_string ( ) const

inline

Member Data Documentation

m_crs_user

CRS osmium::geom::Projection::m_crs_user

private

m_crs_wgs84

CRS osmium::geom::Projection::m_crs_wgs84 {4326}

private

m_epsg

int osmium::geom::Projection::m_epsg

private

m_proj_string

std::string osmium::geom::Projection::m_proj_string

private

---

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

• include/osmium/geom/projection.hpp