org.apache.lucene.geo

Class Rectangle

java.lang.Object

org.apache.lucene.geo.Rectangle

public class Rectangle
extends Object

Represents a lat/lon rectangle.

Field Summary

Fields

Modifier and Type	Field and Description
static double	AXISLAT_ERROR maximum error from axisLat(double, double).
double	maxLat maximum latitude value (in degrees)
double	maxLon minimum latitude value (in degrees)
double	minLat maximum longitude value (in degrees)
double	minLon minimum longitude value (in degrees)

Constructor Summary

Constructors

Constructor and Description
Rectangle(double minLat, double maxLat, double minLon, double maxLon) Constructs a bounding box by first validating the provided latitude and longitude coordinates

Method Summary

Modifier and Type	Method and Description
static double	axisLat(double centerLat, double radiusMeters) Calculate the latitude of a circle's intersections with its bbox meridians.
static boolean	containsPoint(double lat, double lon, double minLat, double maxLat, double minLon, double maxLon) returns true if rectangle (defined by minLat, maxLat, minLon, maxLon) contains the lat lon point
boolean	crossesDateline() Returns true if this bounding box crosses the dateline
boolean	equals(Object o)
static Rectangle	fromPointDistance(double centerLat, double centerLon, double radiusMeters) Compute Bounding Box for a circle using WGS-84 parameters
static Rectangle	fromPolygon(Polygon[] polygons) Returns the bounding box over an array of polygons
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

minLat

public final double minLat

maximum longitude value (in degrees)

minLon

public final double minLon

minimum longitude value (in degrees)

maxLat

public final double maxLat

maximum latitude value (in degrees)

maxLon

public final double maxLon

minimum latitude value (in degrees)

AXISLAT_ERROR

public static final double AXISLAT_ERROR

maximum error from axisLat(double, double). logic must be prepared to handle this

See Also:

Constant Field Values

Constructor Detail

Rectangle

public Rectangle(double minLat,
                 double maxLat,
                 double minLon,
                 double maxLon)

Constructs a bounding box by first validating the provided latitude and longitude coordinates

Method Detail

toString

public String toString()

Overrides:

toString in class Object

crossesDateline

public boolean crossesDateline()

Returns true if this bounding box crosses the dateline

containsPoint

public static boolean containsPoint(double lat,
                                    double lon,
                                    double minLat,
                                    double maxLat,
                                    double minLon,
                                    double maxLon)

returns true if rectangle (defined by minLat, maxLat, minLon, maxLon) contains the lat lon point

fromPointDistance

public static Rectangle fromPointDistance(double centerLat,
                                          double centerLon,
                                          double radiusMeters)

Compute Bounding Box for a circle using WGS-84 parameters

axisLat

public static double axisLat(double centerLat,
                             double radiusMeters)

Calculate the latitude of a circle's intersections with its bbox meridians.

NOTE: the returned value will be +/- AXISLAT_ERROR of the actual value.

Parameters:

centerLat - The latitude of the circle center

radiusMeters - The radius of the circle in meters

Returns:

A latitude

fromPolygon

public static Rectangle fromPolygon(Polygon[] polygons)

Returns the bounding box over an array of polygons

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object