GEOS 3.3.4

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geos::geom Namespace Reference

Contains the `Geometry` interface hierarchy and supporting classes. More...

## Namespaces
namespace | util
| Provides classes that parse and modify Geometry objects.

## Classes
class | Coordinate
| Coordinate is the lightweight class used to store coordinates. More...
struct | CoordinateLessThen
| Strict weak ordering Functor for Coordinate. More...
class | CoordinateArraySequence
| The default implementation of CoordinateSequence. More...
class | CoordinateArraySequenceFactory
| Creates CoordinateSequences internally represented as an array of Coordinates. More...
class | CoordinateFilter
class | CoordinateList
| A list of Coordinates, which may be set to prevent repeated coordinates from occuring in the list. More...
class | CoordinateSequence
| The internal representation of a list of coordinates inside a Geometry. More...
class | CoordinateSequenceFactory
| A factory to create concrete instances of CoordinateSequences. More...
class | CoordinateSequenceFilter
class | Dimension
| Constants representing the dimensions of a point, a curve and a surface. More...
class | Envelope
| An Envelope defines a rectangulare region of the 2D coordinate plane. More...
class | Geometry
| Basic implementation of Geometry, constructed and destructed by GeometryFactory. More...
class | GeometryCollection
| Represents a collection of heterogeneous Geometry objects. More...
class | GeometryComponentFilter
class | GeometryFactory
| Supplies a set of utility methods for building Geometry objects from CoordinateSequence or other Geometry objects. More...
class | GeometryFilter
| Geometry classes support the concept of applying a Geometry filter to the Geometry. More...
class | GeometryList
| Manager of Geometry pointers. Owns the Geometries. More...
class | IntersectionMatrix
| Implementation of Dimensionally Extended Nine-Intersection Model (DE-9IM) matrix. More...
class | Lineal
class | LinearRing
| Models an OGC SFS `LinearRing`. More...
class | LineSegment
class | LineString
class | Location
| Constants representing the location of a point relative to a geometry. More...
class | MultiLineString
| Models a collection of (}s. More...
class | MultiPoint
class | MultiPolygon
| Models a collection of Polygons. More...
class | Point
class | Polygon
| Represents a linear polygon, which may include holes. More...
class | Polygonal
class | PrecisionModel
| Specifies the precision model of the Coordinate in a Geometry. More...
class | Puntal
class | Triangle
| Represents a planar triangle, and provides methods for calculating various properties of triangles. More...

## Typedefs
typedef CoordinateArraySequence | DefaultCoordinateSequence
| This is for backward API compatibility.
typedef CoordinateArraySequenceFactory | DefaultCoordinateSequenceFactory
| This is for backward API compatibility.

## Enumerations
enum | GeometryTypeId { GEOS_POINT, GEOS_LINESTRING, GEOS_LINEARRING, GEOS_POLYGON, GEOS_MULTIPOINT, GEOS_MULTILINESTRING, GEOS_MULTIPOLYGON, GEOS_GEOMETRYCOLLECTION }
| Geometry types. More...

## Functions
bool | check_valid (const Geometry &g, const std::string &label)
std::auto_ptr< Geometry > | fix_self_intersections (std::auto_ptr< Geometry > g, const std::string &label)
template<class BinOp >
std::auto_ptr< Geometry > | SnapOp (const Geometry *g0, const Geometry *g1, BinOp _Op)
| Apply a binary operation to the given geometries after snapping them to each other after common-bits removal.
template<class BinOp >
std::auto_ptr< Geometry > | BinaryOp (const Geometry *g0, const Geometry *g1, BinOp _Op)
bool | operator< (const Coordinate &a, const Coordinate &b)
| Strict weak ordering operator for Coordinate.
GEOS_DLL std::ostream & | operator<< (std::ostream &os, const Coordinate &c)
| Output function.
GEOS_DLL bool | operator== (const Coordinate &a, const Coordinate &b)
| Equality operator for Coordinate. 2D only.
GEOS_DLL bool | operator!= (const Coordinate &a, const Coordinate &b)
| Inequality operator for Coordinate. 2D only.
std::ostream & | operator<< (std::ostream &os, const CoordinateList &cl)
GEOS_DLL std::ostream & | operator<< (std::ostream &os, const CoordinateSequence &cs)
GEOS_DLL bool | operator== (const CoordinateSequence &s1, const CoordinateSequence &s2)
GEOS_DLL bool | operator!= (const CoordinateSequence &s1, const CoordinateSequence &s2)
GEOS_DLL bool | operator== (const Envelope &a, const Envelope &b)
| Checks if two Envelopes are equal (2D only check)
GEOS_DLL std::ostream & | operator<< (std::ostream &os, const Geometry &geom)
| Write the Well-known Binary representation of this Geometry as an HEX string to the given output stream.
std::string | geosversion ()
| Return current GEOS version.
std::string | jtsport ()
| Return the version of JTS this GEOS release has been ported from.
GEOS_DLL std::ostream & | operator<< (std::ostream &os, const IntersectionMatrix &im)
std::ostream & | operator<< (std::ostream &o, const LineSegment &l)
bool | operator== (const LineSegment &a, const LineSegment &b)
| Checks if two LineSegment are equal (2D only check)

## Detailed Description

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 int ended 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 J TS 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

## Enumeration Type Documentation

enum geos::geom::GeometryTypeId

Geometry types.

Enumerator:

  GEOS_POINT | a point
  GEOS_LINESTRING | a linestring
  GEOS_LINEARRING | a linear ring (linestring with 1st point == last point)
  GEOS_POLYGON | a polygon
  GEOS_MULTIPOINT | a collection of points
  GEOS_MULTILINESTRING | a collection of linestrings
  GEOS_MULTIPOLYGON | a collection of polygons
  GEOS_GEOMETRYCOLLECTION | a collection of heterogeneus geometries