geos::geomgraph Namespace Reference

Contains classes that implement topology graphs. More...

Namespaces
	index
	Contains classes that implement indexes for performing noding on geometry graph edges.

Classes
class	Depth
	A Depth object records the topological depth of the sides of an Edge for up to two Geometries. More...
class	DirectedEdge
	A directed EdgeEnd. More...
class	DirectedEdgeStar
	A DirectedEdgeStar is an ordered list of outgoing DirectedEdges around a node. More...
class	Edge
class	EdgeEnd
	Models the end of an edge incident on a node. More...
class	EdgeEndStar
	A EdgeEndStar is an ordered list of EdgeEnds around a node. More...
class	EdgeIntersection
	Represents a point on an edge which intersects with another edge. More...
class	EdgeIntersectionList
	A list of edge intersections along an Edge. More...
class	EdgeList
	A EdgeList is a list of Edges. More...
class	EdgeNodingValidator
	Validates that a collection of SegmentStrings is correctly noded. More...
class	EdgeRing
class	GeometryGraph
	A GeometryGraph is a graph that models a given Geometry. More...
class	GraphComponent
	A GraphComponent is the parent class for the objects' that form a graph. More...
class	Label
	A Label indicates the topological relationship of a component of a topology graph to a given Geometry. More...
class	Node
	The node component of a geometry graph. More...
class	PlanarGraph
	Represents a directed graph which is embeddable in a planar surface. More...
class	TopologyLocation
	A TopologyLocation is the labelling of a GraphComponent's topological relationship to a single Geometry. More...

Functions
bool	operator== (const Edge &a, const Edge &b)
std::ostream &	operator<< (std::ostream &os, const Edge &el)
std::ostream &	operator<< (std::ostream &, const EdgeEnd &)
std::ostream &	operator<< (std::ostream &, const EdgeEndStar &)
bool	operator< (const EdgeIntersection &ei1, const EdgeIntersection &ei2)
std::ostream &	operator<< (std::ostream &os, const EdgeIntersection &e)
	Output operator.
std::ostream &	operator<< (std::ostream &, const EdgeIntersectionList &)
std::ostream &	operator<< (std::ostream &os, const EdgeList &el)
std::ostream &	operator<< (std::ostream &os, const EdgeRing &er)
std::ostream &	operator<< (std::ostream &, const Label &)
std::ostream &	operator<< (std::ostream &os, const Node &node)
std::ostream &	operator<< (std::ostream &, const TopologyLocation &)

Detailed Description

Contains classes that implement topology graphs.

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 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

Function Documentation

operator<()

bool geos::geomgraph::operator< ( const EdgeIntersection &  ei1, const EdgeIntersection &  ei2  )

inline

Strict weak ordering operator for EdgeIntersection

This is the C++ equivalent of JTS's compareTo