Package org.locationtech.spatial4j.shape.impl

Class GeoCircle

java.lang.Object

org.locationtech.spatial4j.shape.BaseShape<SpatialContext>

org.locationtech.spatial4j.shape.impl.CircleImpl

org.locationtech.spatial4j.shape.impl.GeoCircle

All Implemented Interfaces:

Circle, Shape

public class GeoCircle
extends CircleImpl

A circle as it exists on the surface of a sphere.

Field Summary

Fields

Modifier and Type	Field	Description
private double	horizAxisY
private GeoCircle	inverseCircle

Fields inherited from class org.locationtech.spatial4j.shape.impl.CircleImpl

enclosingBox, point, radiusDEG

Fields inherited from class org.locationtech.spatial4j.shape.BaseShape

ctx

Constructor Summary

Constructors

Constructor	Description
GeoCircle(Point p, double radiusDEG, SpatialContext ctx)

Method Summary

Modifier and Type	Method	Description
protected double	getYAxis()	The Y coordinate of where the circle axis intersect.
private void	init()
private int	numCornersIntersect(Rectangle r)	Returns either 0 for none, 1 for some, or 4 for all.
private SpatialRelation	relateRectangleCircleWrapsPole(Rectangle r, SpatialContext ctx)
protected SpatialRelation	relateRectanglePhase2(Rectangle r, SpatialRelation bboxSect)	Called after bounding box is intersected.
void	reset(double x, double y, double radiusDEG)	Expert: Resets the state of this shape given the arguments.
java.lang.String	toString()

Methods inherited from class org.locationtech.spatial4j.shape.impl.CircleImpl

contains, equals, equals, getArea, getBoundingBox, getBuffered, getCenter, getRadius, getXAxis, hasArea, hashCode, hashCode, isEmpty, relate, relate, relate, relate

Methods inherited from class org.locationtech.spatial4j.shape.BaseShape

getContext

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.locationtech.spatial4j.shape.Shape

getContext

Field Detail

inverseCircle

private GeoCircle inverseCircle

horizAxisY

private double horizAxisY

Constructor Detail

GeoCircle

public GeoCircle(Point p,
                 double radiusDEG,
                 SpatialContext ctx)

Method Detail

reset

public void reset(double x,
                  double y,
                  double radiusDEG)

Description copied from interface: Circle

Expert: Resets the state of this shape given the arguments. This is a performance feature to avoid excessive Shape object allocation as well as some argument error checking. Mutable shapes is error-prone so use with care.

Specified by:

reset in interface Circle

Overrides:

reset in class CircleImpl

init

private void init()

getYAxis

protected double getYAxis()

Description copied from class: CircleImpl

The Y coordinate of where the circle axis intersect.

Overrides:

getYAxis in class CircleImpl

relateRectanglePhase2

protected SpatialRelation relateRectanglePhase2(Rectangle r,
                                                SpatialRelation bboxSect)

Called after bounding box is intersected.

Overrides:

relateRectanglePhase2 in class CircleImpl

Parameters:

bboxSect - INTERSECTS or CONTAINS from enclosingBox's intersection

Returns:

DISJOINT, CONTAINS, or INTERSECTS (not WITHIN)

relateRectangleCircleWrapsPole

private SpatialRelation relateRectangleCircleWrapsPole(Rectangle r,
                                                       SpatialContext ctx)

numCornersIntersect

private int numCornersIntersect(Rectangle r)

Returns either 0 for none, 1 for some, or 4 for all.

toString

public java.lang.String toString()

Overrides:

toString in class CircleImpl