Class S2Polygon.S2PolygonIndex

java.lang.Object

com.google.common.geometry.S2EdgeIndex

com.google.common.geometry.S2Polygon.S2PolygonIndex

Enclosing class:

S2Polygon

public static final class S2Polygon.S2PolygonIndex
extends S2EdgeIndex

Indexing structure for an S2Polygon.

Nested Class Summary

Nested classes/interfaces inherited from class S2EdgeIndex

S2EdgeIndex.DataEdgeIterator

Constructor Summary

Constructors

Constructor	Description
S2PolygonIndex(S2Polygon poly)

Method Summary

Modifier and Type	Method	Description
final com.google.common.geometry.S2Polygon.LoopVertexIndexPair	decodeIndex(int index)
S2Point	edgeFrom(int index)	Returns the starting vertex of the edge at offset index.
S2Edge	edgeFromTo(int index)	Mark the S2EdgeIndex.edgeFromTo(int) method abstract again, so children of this class must implement it without using S2EdgeIndex.edgeFrom(int) and S2EdgeIndex.edgeTo(int).
S2Point	edgeTo(int index)	Returns the ending vertex of the edge at offset index.
final int	getNumEdges()	Returns the number of edges in this index.

Methods inherited from class S2EdgeIndex

clipEdge, computeIndex, findCandidateCrossings, incrementQueryCount, isIndexComputed, predictAdditionalCalls, reset

Methods inherited from class Object

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

Constructor Details

S2PolygonIndex

public S2PolygonIndex(S2Polygon poly)

Method Details

edgeFromTo

public S2Edge edgeFromTo(int index)

Mark the S2EdgeIndex.edgeFromTo(int) method abstract again, so children of this class must implement it without using S2EdgeIndex.edgeFrom(int) and S2EdgeIndex.edgeTo(int).

decodeIndex

public final com.google.common.geometry.S2Polygon.LoopVertexIndexPair decodeIndex(int index)

getNumEdges

public final int getNumEdges()

Description copied from class: S2EdgeIndex

Returns the number of edges in this index.

Specified by:

getNumEdges in class S2EdgeIndex

edgeFrom

public S2Point edgeFrom(int index)

Description copied from class: S2EdgeIndex

Returns the starting vertex of the edge at offset index.

Specified by:

edgeFrom in class S2EdgeIndex

edgeTo

public S2Point edgeTo(int index)

Description copied from class: S2EdgeIndex

Returns the ending vertex of the edge at offset index.

Specified by:

edgeTo in class S2EdgeIndex