Package org.apache.lucene.geo

# Interface Tessellator.Monitor

Enclosing class:
  `Tessellator`

public static interface Tessellator.Monitor
Implementation of this interface will receive calls with internal data at each step of the triangulation algorithm. This is of use for debugging complex cases, as well as gaining insight into the way the algorithm works. Data provided includes a status string containing the current mode, list of points representing the current linked-list of internal nodes used for triangulation, and a list of triangles so far created by the algorithm.

## Field Summary

Fields
Modifier and Type
Field
Description
`static final String`
`COMPLETED`
`static final String`
`FAILED`

## Method Summary

Modifier and Type
Method
Description
`void`
`currentState(String status, List<Point> points, List<Tessellator.Triangle> tessellation)`
Each loop of the main earclip algorithm will call this with the current state
`void`
`endSplit(String status)`
When a polygon split is completed, this is called.
`void`
`startSplit(String status, List<Point> leftPolygon, List<Point> rightPolygon)`
When a new polygon split is entered for mode=SPLIT, this is called.

## Field Details

### FAILED

static final String FAILED

See Also:
  - Constant Field Values

### COMPLETED

static final String COMPLETED

See Also:
  - Constant Field Values

## Method Details

### currentState

void currentState(String status, List<Point> points, List<Tessellator.Triangle> tessellation)
Each loop of the main earclip algorithm will call this with the current state

### startSplit

void startSplit(String status, List<Point> leftPolygon, List<Point> rightPolygon)
When a new polygon split is entered for mode=SPLIT, this is called.

### endSplit

void endSplit(String status)
When a polygon split is completed, this is called.