Interface S2ShapeAspect.EdgeAspect

All Known Subinterfaces:

S2LaxPolygonShape, S2LaxPolylineShape, S2ShapeAspect.EdgeAspect.Closed, S2ShapeAspect.EdgeAspect.Open, S2ShapeAspect.Mixed

All Known Implementing Classes:

S2LaxPolygonShape.MultiArray, S2LaxPolygonShape.MultiList, S2LaxPolygonShape.MultiPacked, S2LaxPolygonShape.MultiSnapped, S2LaxPolygonShape.SimpleArray, S2LaxPolygonShape.SimpleList, S2LaxPolygonShape.SimplePacked, S2LaxPolygonShape.SimpleSnapped, S2LaxPolylineShape.MultiArray, S2LaxPolylineShape.MultiPacked, S2LaxPolylineShape.MultiSnapped, S2LaxPolylineShape.SimpleArray, S2LaxPolylineShape.SimpleList, S2LaxPolylineShape.SimplePacked, S2LaxPolylineShape.SimpleSnapped, S2ShapeAspect.ChainAspect.Multi, S2ShapeAspect.ChainAspect.Multi.Array, S2ShapeAspect.ChainAspect.Multi.Packed, S2ShapeAspect.ChainAspect.Multi.Snapped, S2ShapeAspect.ChainAspect.Simple, S2ShapeAspect.ChainAspect.Simple.Array, S2ShapeAspect.ChainAspect.Simple.Packed, S2ShapeAspect.ChainAspect.Simple.Snapped

Enclosing interface:

S2ShapeAspect

public static interface S2ShapeAspect.EdgeAspect

A provider of the 'vertexId' for the start and end of each 'edgeId' or 'chainId'/'edgeOffset', allowing alternate edge/vertex mappings.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	S2ShapeAspect.EdgeAspect.Closed	Chains are closed, that is, there is an implicit edge between the ends of each chain.
static interface	S2ShapeAspect.EdgeAspect.Open	Chains are open, that is, there is no implicit edge between the ends of each chain.

Method Summary

Modifier and Type	Method	Description
void	adjustChains(int... chainStarts)	Converts the given array of 'vertexId' values in place, yielding an array of 'edgeId' values that start each chain.
void	getChainEdge(int chainId, int edgeOffset, S2Shape.MutableEdge result)	Provides S2Shape.getChainEdge(int, int, S2Shape.MutableEdge).
S2Point	getChainVertex(int chainId, int edgeOffset)	Returns the start point of the edge that would be returned by S2Shape.getChainEdge(int, int, S2Shape.MutableEdge), or the endpoint of the last edge if edgeOffset==getChainLength(chainId).
void	getEdge(int edgeId, S2Shape.MutableEdge result)	Provides S2Shape.getEdge(int, S2Shape.MutableEdge).
int	numEdges()	Provides S2Shape.numEdges().
int	vertexId(int chainId, int edgeId)	Returns the vertexId that starts 'edgeId', assuming edgeId(chainId) <= edgeId && edgeId < edgeId(chainId + 1).

Method Details

vertexId

int vertexId(int chainId,
 int edgeId)

Returns the vertexId that starts 'edgeId', assuming edgeId(chainId) <= edgeId && edgeId < edgeId(chainId + 1).

adjustChains

void adjustChains(int... chainStarts)

Converts the given array of 'vertexId' values in place, yielding an array of 'edgeId' values that start each chain. This requires knowledge of the edge/vertex mapping, and hence this aspect of S2Shape construction is delegated here.

getChainVertex

S2Point getChainVertex(int chainId,
 int edgeOffset)

Returns the start point of the edge that would be returned by S2Shape.getChainEdge(int, int, S2Shape.MutableEdge), or the endpoint of the last edge if edgeOffset==getChainLength(chainId).

numEdges

int numEdges()

Provides S2Shape.numEdges().

getEdge

void getEdge(int edgeId,
 S2Shape.MutableEdge result)

Provides S2Shape.getEdge(int, S2Shape.MutableEdge).

getChainEdge

void getChainEdge(int chainId,
 int edgeOffset,
 S2Shape.MutableEdge result)

Provides S2Shape.getChainEdge(int, int, S2Shape.MutableEdge).