GEOS  3.9.0dev
Namespaces | Classes | Functions
geos::geomgraph Namespace Reference

Contains classes that implement topology graphs. More...


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


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...


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

Function Documentation

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

Strict weak ordering operator for EdgeIntersection

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