org.geolatte.geom.crs

Class PrimeMeridian

java.lang.Object

org.geolatte.geom.crs.CrsIdentifiable

org.geolatte.geom.crs.PrimeMeridian

public class PrimeMeridian
extends CrsIdentifiable

A prime meridian.

A prime meridian is defined by [CTS-1.00] as follows: "[The prime meridian] defines the meridian used to take longitude measurements from. The units of the longitude must be inferred from the context. If [this object] occurs inside a [geographic coordinate reference system], then the longitude units will match those of the geographic coordinate system. If [it] occurs inside a [geo-centric coordinate reference system], then the units will be in degrees. The longitude value defines the angle of the prime meridian relative to the Greenwich Meridian. A positive value indicates the prime meridian is East of Greenwich, and a negative value indicates the prime meridian is West of Greenwich

Field Summary

Fields

Modifier and Type	Field and Description
private double	longitude

Constructor Summary

Constructors

Constructor and Description
PrimeMeridian(CrsId crsId, java.lang.String name, double longitude) Constructs an instance

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
double	getLongitude() Returns the angle of this meridian relative to Greenwich Meridian.
int	hashCode()

Methods inherited from class org.geolatte.geom.crs.CrsIdentifiable

getCrsId, getName

Methods inherited from class java.lang.Object

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

Field Detail

longitude

private final double longitude

Constructor Detail

PrimeMeridian

public PrimeMeridian(CrsId crsId,
                     java.lang.String name,
                     double longitude)

Constructs an instance

Parameters:

crsId - the identifier for the new prime meridian

name - the common name for the new prime meridian

longitude - the angle of the new prime meridian relative to Greenwich Meridian

Method Detail

getLongitude

public double getLongitude()

Returns the angle of this meridian relative to Greenwich Meridian.

Returns:

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class CrsIdentifiable

hashCode

public int hashCode()

Overrides:

hashCode in class CrsIdentifiable