org.openstreetmap.josm.data.projection.proj

Class Mercator

java.lang.Object

org.openstreetmap.josm.data.projection.proj.Mercator

All Implemented Interfaces:

Proj

public class Mercator
extends java.lang.Object
implements Proj

Mercator Projection.

Constructor Summary

Constructors

Constructor and Description
Mercator()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getName() Replies a human readable name of this projection.
java.lang.String	getProj4Id() Replies the Proj.4 identifier.
void	initialize(ProjParameters params) Initialize the projection using the provided parameters.
double[]	invproject(double east, double north) Convert east/north to lat/lon.
double[]	project(double lat_rad, double lon_rad) Convert lat/lon to east/north.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Mercator

public Mercator()

Method Detail

getName

public java.lang.String getName()

Description copied from interface: Proj

Replies a human readable name of this projection.

Specified by:

getName in interface Proj

Returns:

The projection name. must not be null.

getProj4Id

public java.lang.String getProj4Id()

Description copied from interface: Proj

Replies the Proj.4 identifier.

Specified by:

getProj4Id in interface Proj

Returns:

The Proj.4 identifier (as reported by cs2cs -lp). If no id exists, return null.

initialize

public void initialize(ProjParameters params)
                throws ProjectionConfigurationException

Description copied from interface: Proj

Initialize the projection using the provided parameters.

Specified by:

initialize in interface Proj

Parameters:

params - The projection parameters

Throws:

ProjectionConfigurationException - in case parameters are not suitable

project

public double[] project(double lat_rad,
                        double lon_rad)

Description copied from interface: Proj

Convert lat/lon to east/north.

Specified by:

project in interface Proj

Parameters:

lat_rad - the latitude in radians

lon_rad - the longitude in radians

Returns:

array of length 2, containing east and north value in meters, divided by the semi major axis of the ellipsoid.

invproject

public double[] invproject(double east,
                           double north)

Description copied from interface: Proj

Convert east/north to lat/lon.

Specified by:

invproject in interface Proj

Parameters:

east - east value in meters, divided by the semi major axis of the ellipsoid

north - north value in meters, divided by the semi major axis of the ellipsoid

Returns:

array of length 2, containing lat and lon in radians.