geos::geom Namespace Reference

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


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
class  CoordinateSequence
 The internal representation of a list of coordinates inside a Geometry. More...
class  CoordinateSequenceFactory
 An object that knows how to build a particular implementation of CoordinateSequence from an array of Coordinates. More...
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  LinearRing
 Basic implementation of LinearRing. More...
class  LineSegment
class  LineString
 Basic implementation of LineString. More...
class  Location
 Constants representing the location of a point relative to a geometry. More...
class  MultiLineString
 Basic implementation of MultiLineString objects. More...
class  MultiPoint
 Models a collection of Point objects. More...
class  MultiPolygon
 Basic implementation of MultiPolygon. More...
class  Point
 Basic implementation of Point. More...
class  Polygon
 Represents a linear polygon, which may include holes. More...
class  PrecisionModel
 Specifies the precision model of the Coordinate in a Geometry. More...
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)
template<class BinOp>
std::auto_ptr< GeometrySnapOp (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< GeometryBinaryOp (const Geometry *g0, const Geometry *g1, BinOp _Op)
std::ostream & operator<< (std::ostream &os, const Coordinate &c)
 Output function.
bool operator== (const Coordinate &a, const Coordinate &b)
 Equality operator for Coordinate. 2D only.
bool operator!= (const Coordinate &a, const Coordinate &b)
 Inequality operator for Coordinate. 2D only.
std::ostream & operator<< (std::ostream &os, const CoordinateList &cl)
std::ostream & operator<< (std::ostream &os, const CoordinateSequence &cs)
bool operator== (const CoordinateSequence &s1, const CoordinateSequence &s2)
bool operator!= (const CoordinateSequence &s1, const CoordinateSequence &s2)
bool operator== (const Envelope &a, const Envelope &b)
 Checks if two Envelopes are equal (2D only check).
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.
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


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


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