Package org.apache.lucene.spatial3d.geom

Class GeoComplexPolygon.FullLinearCrossingEdgeIterator

java.lang.Object

org.apache.lucene.spatial3d.geom.GeoComplexPolygon.FullLinearCrossingEdgeIterator

All Implemented Interfaces:

GeoComplexPolygon.CountingEdgeIterator, GeoComplexPolygon.EdgeIterator

Enclosing class:

GeoComplexPolygon

private class GeoComplexPolygon.FullLinearCrossingEdgeIterator
extends java.lang.Object
implements GeoComplexPolygon.CountingEdgeIterator

Count the number of verifiable edge crossings for a full 1/2 a world.

Field Summary

Fields

Modifier and Type	Field	Description
private int	aboveCrossingCount
private Plane	abovePlane
private int	belowCrossingCount
private Plane	belowPlane
private Membership	bound
private boolean	onEdge
private Plane	plane
private double	thePointX
private double	thePointY
private double	thePointZ

Constructor Summary

Constructors

Constructor	Description
FullLinearCrossingEdgeIterator(GeoPoint testPoint, Plane plane, Plane abovePlane, Plane belowPlane, double thePointX, double thePointY, double thePointZ)

Method Summary

Modifier and Type	Method	Description
private int	countCrossings(GeoComplexPolygon.Edge edge, Plane envelopePlane, Membership envelopeBound)	Find the intersections with an envelope plane, and assess those intersections for whether they truly describe crossings.
private boolean	edgeCrossesEnvelope(Plane edgePlane, GeoPoint intersectionPoint, Plane envelopePlane)
int	getCrossingCount()
boolean	isOnEdge()
boolean	matches(GeoComplexPolygon.Edge edge)

Methods inherited from class java.lang.Object

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

Field Detail

plane

private final Plane plane

abovePlane

private final Plane abovePlane

belowPlane

private final Plane belowPlane

bound

private final Membership bound

thePointX

private final double thePointX

thePointY

private final double thePointY

thePointZ

private final double thePointZ

onEdge

private boolean onEdge

aboveCrossingCount

private int aboveCrossingCount

belowCrossingCount

private int belowCrossingCount

Constructor Detail

FullLinearCrossingEdgeIterator

public FullLinearCrossingEdgeIterator(GeoPoint testPoint,
                                      Plane plane,
                                      Plane abovePlane,
                                      Plane belowPlane,
                                      double thePointX,
                                      double thePointY,
                                      double thePointZ)

Method Detail

getCrossingCount

public int getCrossingCount()

Specified by:

getCrossingCount in interface GeoComplexPolygon.CountingEdgeIterator

Returns:

the number of edges that were crossed.

isOnEdge

public boolean isOnEdge()

Specified by:

isOnEdge in interface GeoComplexPolygon.CountingEdgeIterator

Returns:

true if the endpoint was on an edge.

matches

public boolean matches(GeoComplexPolygon.Edge edge)

Specified by:

matches in interface GeoComplexPolygon.EdgeIterator

Parameters:

edge - is the edge that matched.

Returns:

true if the iteration should continue, false otherwise.

countCrossings

private int countCrossings(GeoComplexPolygon.Edge edge,
                           Plane envelopePlane,
                           Membership envelopeBound)

Find the intersections with an envelope plane, and assess those intersections for whether they truly describe crossings.

edgeCrossesEnvelope

private boolean edgeCrossesEnvelope(Plane edgePlane,
                                    GeoPoint intersectionPoint,
                                    Plane envelopePlane)