com.mozilla.secops

Class GeoUtil

java.lang.Object

com.mozilla.secops.GeoUtil

public class GeoUtil
extends Object

Geo math utilities

Constructor Summary

Constructors

Constructor and Description
GeoUtil()

Method Summary

Modifier and Type	Method and Description
static Double	haversin(Double theta) haversin(0)
static Double	kmBetweenTwoPoints(Double lat1, Double lon1, Double lat2, Double lon2) Returns the distance (in kilometers) between two points of a given longitude and latitude relatively accurately (using a spherical approximation of the Earth) through the Haversin Distance Formula for great arc distance on a sphere with accuracy for small distances

Methods inherited from class java.lang.Object

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

Constructor Detail

GeoUtil

public GeoUtil()

Method Detail

haversin

public static Double haversin(Double theta)

haversin(0)

Taken from: https://github.com/ameihm0912/geomodel/blob/master/geo.go

http://en.wikipedia.org/wiki/Haversine_formula

Parameters:

theta - angle

Returns:

Resulting half a versine

kmBetweenTwoPoints

public static Double kmBetweenTwoPoints(Double lat1,
                                        Double lon1,
                                        Double lat2,
                                        Double lon2)

Returns the distance (in kilometers) between two points of a given longitude and latitude relatively accurately (using a spherical approximation of the Earth) through the Haversin Distance Formula for great arc distance on a sphere with accuracy for small distances

Taken from: https://github.com/ameihm0912/geomodel/blob/master/geo.go

http://en.wikipedia.org/wiki/Haversine_formula

Parameters:

lat1 - Latitude 1

lon1 - Longitude 1

lat2 - Latitude 2

lon2 - Longitude 2

Returns:

distance in kilometers between the two points