S2ContainsVertexQuery (S2 Geometry Library for Java 2.0.0 API)

java.lang.Object
- com.google.common.geometry.S2ContainsVertexQuery

```
@GwtCompatible
public class S2ContainsVertexQuery
extends Object
```
This class determines whether a polygon contains one of its vertices given the edges incident to that vertex. The result is +1 if the vertex is contained, -1 if it is not contained, and 0 if the incident edges consist of matched sibling pairs (in which case the result cannot be determined locally).
The "semi-open" boundary model is used to define point containment. This means that if several polygons tile the region around a vertex, then exactly one of those polygons contains that vertex.
This class is not thread-safe.

Constructor Summary

Constructors
Constructor Description

S2ContainsVertexQuery(S2Point target)
Creates a contains vertex query to determine containment of 'target'.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addIncoming(S2Point v)`	Adds an edge from 'v' incoming to 'target'.
`void`	`addOutgoing(S2Point v)`	Adds an edge outgoing from 'target' to 'v'.
`int`	`containsSign()`	Returns +1 if the vertex is contained, -1 if it is not contained, and 0 if the incident edges consisted of matched sibling pairs.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - S2ContainsVertexQuery
```
public S2ContainsVertexQuery(S2Point target)
```
    Creates a contains vertex query to determine containment of 'target'.
- Method Detail
  - addOutgoing
```
public void addOutgoing(S2Point v)
```
    Adds an edge outgoing from 'target' to 'v'.
  - addIncoming
```
public void addIncoming(S2Point v)
```
    Adds an edge from 'v' incoming to 'target'.
  - containsSign
```
public int containsSign()
```
    Returns +1 if the vertex is contained, -1 if it is not contained, and 0 if the incident edges consisted of matched sibling pairs.