# Package org.apache.lucene.geo

Geospatial Utility Implementations for Lucene Core

- Interface Summary
  Interface | Description
  --- | ---
  Component2D | 2D Geometry object that supports spatial relationships with bounding boxes, triangles and points.
  Tessellator.Monitor | Implementation of this interface will receive calls with internal data at each step of the triangulation algorithm.

- Class Summary
  Class | Description
  --- | ---
  Circle | Represents a circle on the earth's surface.
  GeoEncodingUtils | reusable geopoint encoding methods
  GeoEncodingUtils.Component2DPredicate | A predicate that checks whether a given point is within a component2D geometry.
  GeoEncodingUtils.DistancePredicate | A predicate that checks whether a given point is within a distance of another point.
  Geometry | Base class for `LatLonGeometry` and `XYGeometry`
  GeoUtils | Basic reusable geo-spatial utility methods
  LatLonGeometry | Lat/Lon Geometry object.
  Line | Represents a line on the earth's surface.
  Point | Represents a point on the earth's surface.
  Polygon | Represents a closed polygon on the earth's surface.
  Rectangle | Represents a lat/lon rectangle.
  SimpleWKTShapeParser | Parses shape geometry represented in WKT format
  Tessellator | Computes a triangular mesh tessellation for a given polygon.
  Tessellator.Node | Circular Doubly-linked list used for polygon coordinates
  Tessellator.Triangle | Triangle in the tessellated mesh
  XYCircle | Represents a circle on the XY plane.
  XYEncodingUtils | reusable cartesian geometry encoding methods
  XYGeometry | Cartesian Geometry object.
  XYLine | Represents a line in cartesian space.
  XYPoint | Represents a point on the earth's surface.
  XYPolygon | Represents a polygon in cartesian space.
  XYRectangle | Represents a x/y cartesian rectangle.

- Enum Summary
  Enum | Description
  --- | ---
  Component2D.WithinRelation | Used by withinTriangle to check the within relationship between a triangle and the query shape (e.g.
  GeoUtils.WindingOrder | used to define the orientation of 3 points -1 = Clockwise 0 = Colinear 1 = Counter-clockwise
  SimpleWKTShapeParser.ShapeType | Enumerated type for Shapes