DFLib::Proj::Point Class Reference

#include <DF_Proj_Point.hpp>

Inheritance diagram for DFLib::Proj::Point:

Collaboration diagram for DFLib::Proj::Point:

Public Member Functions
	Point (const std::vector< double > &uPosition, const std::vector< std::string > &projArgs)
	Constructor.
	Point (const Point &right)
	Copy Constructor.
	~Point ()
	destructor
Point &	operator= (const Point &rhs)
	assignment operator
void	setUserProj (const std::vector< std::string > &projArgs)
	set user projection information
bool	isUserProjRadians () const
	return true if user projection expects input in radians
virtual void	setXY (const std::vector< double > &mPosition)
	set mercator projection (XY) position
virtual const std::vector< double > &	getXY ()
	get mercator projection (XY) position
virtual const std::vector< double > &	getUserCoords ()
	get user position
virtual void	setUserCoords (const std::vector< double > &uPosition)
	set user position
virtual Point *	Clone ()
	Clone Self.
virtual	~Point ()
	virtual destructor because there should always be one
virtual void	setXY (const std::vector< double > &aPosition)=0
	Set X-Y coordinates of the point.
virtual const std::vector< double > &	getXY ()=0
	Get X-Y coordinates of the point.
virtual const std::vector< double > &	getUserCoords ()=0
	Get coordinates in the user's coordinate system.
virtual void	setUserCoords (const std::vector< double > &uPosition)=0
	Set coordinates in the user's coordinate system.
virtual Point *	Clone ()=0
	Clone Self.

Private Member Functions
void	mercToUser ()
void	userToMerc ()

Private Attributes
std::vector< double >	theMerc
bool	mercDirty
std::vector< double >	theUserCoords
bool	userDirty
PJ *	convertPJ

Constructor & Destructor Documentation

Point() [1/2]

DFLib::Proj::Point::Point	(	const std::vector< double > &	uPosition,
		const std::vector< std::string > &	projArgs
	)

Constructor.

Parameters

uPosition	coordinates in user's coordinates
projArgs	a vector of strings representing the Proj.4 description of the user's coordinate system.

Point() [2/2]

DFLib::Proj::Point::Point

(

const Point &

right

)

Copy Constructor.

~Point()

DFLib::Proj::Point::~Point ( )

virtual

destructor

Reimplemented from DFLib::Abstract::Point.

Member Function Documentation

Clone()

Point * DFLib::Proj::Point::Clone ( )

virtual

Clone Self.

Make a copy of yourself, and return a pointer to the copy. This is useful as a prototype: pass a pointer to any concrete implementation to a function, and that function has a way of making other objects of precisely the same type by cloning.

Returns

pointer to

Implements DFLib::Abstract::Point.

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getUserCoords()

const std::vector< double > & DFLib::Proj::Point::getUserCoords ( )

virtual

get user position

Returns

a vector<double> containing the coordinates of this point in the user's coordinate system.

This method works by converting the mercator coordinates of the point back to the user's coordinate system using the Proj.4 cartographic projection library if the mercator coordinates or user projection have changed since the last call.

Implements DFLib::Abstract::Point.

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getXY()

const std::vector< double > & DFLib::Proj::Point::getXY ( )

virtual

get mercator projection (XY) position

Returns

vector of coordinates in mercator projection

Implements DFLib::Abstract::Point.

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isUserProjRadians()

bool DFLib::Proj::Point::isUserProjRadians

(

)

const

return true if user projection expects input in radians

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mercToUser()

void DFLib::Proj::Point::mercToUser ( )

private

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operator=()

Point & DFLib::Proj::Point::operator=

(

const Point &

rhs

)

assignment operator

setUserCoords()

void DFLib::Proj::Point::setUserCoords ( const std::vector< double > &  uPosition )

virtual

set user position

Sets the coordinates of the point in user's coordinate system, marking the mercator coordinates invalid. Mercator coordinates will be updated by conversion with Proj.4 upon the next call to getXY().

Parameters

uPosition

vector of doubles with user coordinates.

Implements DFLib::Abstract::Point.

setUserProj()

void DFLib::Proj::Point::setUserProj

(

const std::vector< std::string > &

projArgs

)

set user projection information

Parameters

projArgs

vector of strings representing the new projection

This method can be used to change the coordinate system of a point. When called, the Mercator representation of the point is updated, then the user projection is changed. The next call to getUserCoords will therefore return the point's coordinates in the new coordinate system.

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setXY()

void DFLib::Proj::Point::setXY ( const std::vector< double > &  mPosition )

virtual

set mercator projection (XY) position

Parameters

aPosition

coordinates in mercator projection

Implements DFLib::Abstract::Point.

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userToMerc()

void DFLib::Proj::Point::userToMerc ( )

private

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Member Data Documentation

convertPJ

PJ* DFLib::Proj::Point::convertPJ

private

mercDirty

bool DFLib::Proj::Point::mercDirty

private

theMerc

std::vector<double> DFLib::Proj::Point::theMerc

private

theUserCoords

std::vector<double> DFLib::Proj::Point::theUserCoords

private

userDirty

bool DFLib::Proj::Point::userDirty

private

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

• /users/russo/DFLIB_Git/DFLib/DF_Proj_Point.hpp
• /users/russo/DFLIB_Git/DFLib/DF_Proj_Point.cpp