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

All Methods Instance Methods Abstract Methods
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, com.google.common.geometry.S2Shape.MutableEdge)`.
`S2Point`	`getChainVertex(int chainId, int edgeOffset)`	Returns the start point of the edge that would be returned by `S2Shape.getChainEdge(int, int, com.google.common.geometry.S2Shape.MutableEdge)`, or the endpoint of the last edge if `edgeOffset==getChainLength(chainId)`.
`void`	`getEdge(int edgeId, S2Shape.MutableEdge result)`	Provides `S2Shape.getEdge(int, com.google.common.geometry.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 Detail
  - 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, com.google.common.geometry.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, com.google.common.geometry.S2Shape.MutableEdge).
  - getChainEdge
```
void getChainEdge(int chainId,
                  int edgeOffset,
                  S2Shape.MutableEdge result)
```
    Provides S2Shape.getChainEdge(int, int, com.google.common.geometry.S2Shape.MutableEdge).