Package org.locationtech.jts.geom

Contains the Geometry interface hierarchy and supporting classes.

The Java Topology Suite (JTS) is a Java API that implements a core set of spatial data operations using an explicit precision model and robust geometric algorithms. JTS is intended to be used in the development of applications that support the validation, cleaning, integration and querying of spatial datasets.

JTS attempts to implement the OpenGIS Simple Features Specification (SFS) as accurately as possible. In some cases the SFS is unclear or omits a specification; in this case JTS attempts to choose a reasonable and consistent alternative. Differences from and elaborations of the SFS are documented in this specification.

Package Specification

• Java Topology Suite Technical Specifications
• OpenGIS Simple Features Specification for SQL

Interface Summary

Interface	Description
CoordinateFilter	An interface for classes which use the values of the coordinates in a Geometry.
CoordinateSequence	The internal representation of a list of coordinates inside a Geometry.
CoordinateSequenceFactory	A factory to create concrete instances of CoordinateSequences.
CoordinateSequenceFilter	An interface for classes which process the coordinates in a CoordinateSequence.
GeometryComponentFilter	Geometry classes support the concept of applying a GeometryComponentFilter filter to the Geometry.
GeometryFilter	GeometryCollection classes support the concept of applying a GeometryFilter to the Geometry.
Lineal	Identifies Geometry subclasses which are 1-dimensional and have components which are LineStrings.
Polygonal	Identifies Geometry subclasses which are 2-dimensional and have components which have Lineal boundaries.
Puntal	Identifies Geometry subclasses which are 0-dimensional and with components which are Points.

Class Summary

Class	Description
Coordinate	A lightweight class used to store coordinates on the 2-dimensional Cartesian plane.
Coordinate.DimensionalComparator	Compares two Coordinates, allowing for either a 2-dimensional or 3-dimensional comparison, and handling NaN values correctly.
CoordinateArrays	Useful utility functions for handling Coordinate arrays
CoordinateArrays.BidirectionalComparator	A Comparator for Coordinate arrays modulo their directionality.
CoordinateArrays.ForwardComparator	A Comparator for Coordinate arrays in the forward direction of their coordinates, using lexicographic ordering.
CoordinateList	A list of Coordinates, which may be set to prevent repeated coordinates from occurring in the list.
Coordinates	Useful utility functions for handling Coordinate objects.
CoordinateSequenceComparator	Compares two CoordinateSequences.
CoordinateSequences	Utility functions for manipulating CoordinateSequences
CoordinateXY	Coordinate subclass supporting XY ordinates.
CoordinateXYM	Coordinate subclass supporting XYM ordinates.
CoordinateXYZM	Coordinate subclass supporting XYZM ordinates.
DefaultCoordinateSequenceFactory	Deprecated. no longer used, recommend CoordinateArraySequenceFactory for array backed implementation
Dimension	Provides constants representing the dimensions of a point, a curve and a surface.
Envelope	Defines a rectangular region of the 2D coordinate plane.
Geometry	A representation of a planar, linear vector geometry.
GeometryCollection	Models a collection of Geometrys of arbitrary type and dimension.
GeometryCollectionIterator	Iterates over all Geometrys in a Geometry, (which may be either a collection or an atomic geometry).
GeometryFactory	Supplies a set of utility methods for building Geometry objects from lists of Coordinates.
IntersectionMatrix	Models a Dimensionally Extended Nine-Intersection Model (DE-9IM) matrix.
LinearRing	Models an OGC SFS LinearRing.
LineSegment	Represents a line segment defined by two Coordinates.
LineString	Models an OGC-style LineString.
Location	Constants representing the different topological locations which can occur in a Geometry.
MultiLineString	Models a collection of LineStrings.
MultiPoint	Models a collection of Points.
MultiPolygon	Models a collection of Polygons.
OctagonalEnvelope	A bounding container for a Geometry which is in the shape of a general octagon.
Point	Represents a single point.
Polygon	Represents a polygon with linear edges, which may include holes.
PrecisionModel	Specifies the precision model of the Coordinates in a Geometry.
PrecisionModel.Type	The types of Precision Model which JTS supports.
Triangle	Represents a planar triangle, and provides methods for calculating various properties of triangles.

Exception Summary

Exception	Description
TopologyException	Indicates an invalid or inconsistent topological situation encountered during processing