Package org.apache.lucene.tests.geo

Class GeoTestUtil

java.lang.Object

org.apache.lucene.tests.geo.GeoTestUtil

public class GeoTestUtil
extends Object

static methods for testing geo

Constructor Summary

Constructors

Constructor	Description
GeoTestUtil()

Method Summary

Modifier and Type	Method	Description
static boolean	containsSlowly(Polygon polygon, double latitude, double longitude)	Simple slow point in polygon check (for testing)
static Polygon	createRegularPolygon(double centerLat, double centerLon, double radiusMeters, int gons)	Makes an n-gon, centered at the provided lat/lon, and each vertex approximately distanceMeters away from the center.
static Rectangle	nextBox()	returns next pseudorandom box: can cross the 180th meridian
static Rectangle	nextBoxNear(Polygon polygon)	Returns next box for testing near a Polygon
static Rectangle	nextBoxNotCrossingDateline()	returns next pseudorandom box: does not cross the 180th meridian
static Circle	nextCircle()
static double	nextLatitude()	returns next pseudorandom latitude (anywhere)
static Line	nextLine()
static double	nextLongitude()	returns next pseudorandom longitude (anywhere)
static Point	nextPoint()
static double[]	nextPointNear(Polygon polygon)	Returns next point (lat/lon) for testing near a Polygon
static double[]	nextPointNear(Rectangle rectangle)	Returns next point (lat/lon) for testing near a Box.
static Polygon	nextPolygon()	returns next pseudorandom polygon
static String	readShape(String name)	reads a shape from file
static String	toSVG(Object... objects)	Returns svg of polygon for debugging.

Methods inherited from class java.lang.Object

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

Constructor Details

GeoTestUtil

public GeoTestUtil()

Method Details

nextLatitude

public static double nextLatitude()

returns next pseudorandom latitude (anywhere)

nextLongitude

public static double nextLongitude()

returns next pseudorandom longitude (anywhere)

nextPointNear

public static double[] nextPointNear(Rectangle rectangle)

Returns next point (lat/lon) for testing near a Box. It may cross the dateline

nextPointNear

public static double[] nextPointNear(Polygon polygon)

Returns next point (lat/lon) for testing near a Polygon

nextBoxNear

public static Rectangle nextBoxNear(Polygon polygon)

Returns next box for testing near a Polygon

nextBox

public static Rectangle nextBox()

returns next pseudorandom box: can cross the 180th meridian

nextBoxNotCrossingDateline

public static Rectangle nextBoxNotCrossingDateline()

returns next pseudorandom box: does not cross the 180th meridian

createRegularPolygon

public static Polygon createRegularPolygon(double centerLat,
 double centerLon,
 double radiusMeters,
 int gons)

Makes an n-gon, centered at the provided lat/lon, and each vertex approximately distanceMeters away from the center.

Do not invoke me across the dateline or a pole!!

nextPoint

public static Point nextPoint()

nextLine

public static Line nextLine()

nextCircle

public static Circle nextCircle()

nextPolygon

public static Polygon nextPolygon()

returns next pseudorandom polygon

toSVG

public static String toSVG(Object... objects)

Returns svg of polygon for debugging.

You can pass any number of objects: Polygon: polygon with optional holes Polygon[]: arrays of polygons for convenience Rectangle: for a box double[2]: as latitude,longitude for a point

At least one object must be a polygon. The viewBox is formed around all polygons found in the arguments.

containsSlowly

public static boolean containsSlowly(Polygon polygon,
 double latitude,
 double longitude)

Simple slow point in polygon check (for testing)

readShape

public static String readShape(String name)
                        throws IOException

reads a shape from file

Throws:

IOException