de.westnordost.osmapi.map.data

Class Fixed1E7LatLon

java.lang.Object

de.westnordost.osmapi.map.data.Fixed1E7LatLon

All Implemented Interfaces:

LatLon, java.io.Serializable

public class Fixed1E7LatLon
extends java.lang.Object
implements LatLon, java.io.Serializable

A geo position (without height) implemented using two fixed 1E7 integers, meaning that the maximum precision is limited to 7 decimal points. This is exactly the maximum precision the positions are saved in the OSM database. This saves 8 byte per coordinate from an implementation based on doubles, but every access involves a division operation. If the goal is to save disk space, rather just serialize a latlon with two integers instead. This implementation should only be chosen if the goal is to save RAM space but CPU is not the bottleneck.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Fixed1E7LatLon(double latitude, double longitude)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
double	getLatitude()
double	getLongitude()
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Detail

Fixed1E7LatLon

public Fixed1E7LatLon(double latitude,
                      double longitude)

Throws:

java.lang.IllegalArgumentException - if the given latitude and longitude do not make up a valid position

Method Detail

getLatitude

public double getLatitude()

Specified by:

getLatitude in interface LatLon

getLongitude

public double getLongitude()

Specified by:

getLongitude in interface LatLon

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object