#include <Proj6.h>

Inheritance diagram for Proj6:

Collaboration diagram for Proj6:

[legend]

Public Member Functions
	Proj6 (const Proj6 &p)

void	setProjectionSrc (const std::string &projDef, Projector::CRS_mode crs=Projector::FORCE_CRS)
	Sets source projection.

void	setProjectionDst (const std::string &projDef, Projector::CRS_mode crs=Projector::FORCE_CRS)
	Sets destination projection.

void	setProjections (const std::string &projDefSrc, const std::string &projDefDst)
	Sets source and destination projection.

const std::string &	getProjectionSrc () const
	Returns the projection std::string applied by the last setProjection call. More...

const std::string &	getProjectionDst () const

const Projector &	getSrc () const

const Projector &	getDst () const

void	projectFwd (double &x, double &y) const
	Forward projection (in-place)

void	projectFwd (double x, double y, double &x2, double &y2) const
	Forward projection.

void	projectFwd (drain::Point2D< double > &point) const
	Forward projection. Example implementation of project<>() .

void	projectInv (double &x, double &y) const

void	projectInv (double x, double y, double &x2, double &y2) const

void	projectInv (drain::Point2D< double > &point) const

void	debug (std::ostream &ostr=std::cout, int wkt=-1)
	Forward projection. More...

bool	isLongLat () const
	Check if destination projection is longitude-latitude degrees.

bool	isSet () const

std::string	getErrorString () const

Static Public Member Functions
static const std::string &	getProjVersion ()

Public Attributes
Projector	src

Projector	dst

Protected Member Functions
template<PJ_DIRECTION D, class POINT_XY >
void	project (POINT_XY &point) const

template<PJ_DIRECTION D>
void	project (double &x, double &y) const

void	setMapping (bool lenient)

Protected Attributes
PJ_CONTEXT *	pjContext = nullptr
	Detect EPSG code from "+init=epsg:EPSG" argument. More...

PJ *	proj = nullptr

Detailed Description

A wrapper for the famous Proj6 class.

proj_context_errno(PJ_CONTEXT *ctx) -> const char *proj_errno_string(int err)

IMPORTANT:

https://proj.org/development/reference/functions.html#c.proj_create If a proj-string contains a +type=crs option, then it is interpreted as a CRS definition. In particular geographic CRS are assumed to have axis in the longitude, latitude order and with degree angular unit. The use of proj-string to describe a CRS is discouraged. It is a legacy means of conveying CRS descriptions: use of object codes (EPSG:XXXX typically) or WKT description is recommended for better expressivity.

Member Function Documentation

◆ debug()

void debug	(	std::ostream &	ostr = `std::cout`,
		int	wkt = `-1`
	)

inline

Forward projection.

Forward projection. Todo: projections for vectors inline Inverse projection. Inverse projection from (x2,y2) to (x,y).

◆ getProjectionSrc()

const std::string& getProjectionSrc ( ) const

inline

Returns the projection std::string applied by the last setProjection call.

! Get a PROJ string representation of an object.

Does not reconstruct it from the allocated proj structure.

◆ project()

void project ( POINT_XY & point ) const

inlineprotected

Template Parameters

POINT_XY	– anything with members double x and double y
D	- PJ_DIRECTION enum value (libproj)

Member Data Documentation

◆ pjContext

PJ_CONTEXT* pjContext = nullptr

protected

Detect EPSG code from "+init=epsg:EPSG" argument.

\param projDef – PROJ.4 projection definition string
\return – EPSG code, if found, else 0.

\see getEpsgDict()

static inline short int pickEpsgCodeOLD(const std::string & projDef){ std::list<std::string> projArgs; return pickEpsgCodeOLD(projDef, projArgs); }

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

src/drain/util/Proj6.h
src/drain/util/Proj6.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions