geos::geomgraph::GeometryGraph Class Reference

A GeometryGraph is a graph that models a given Geometry. More...

#include <GeometryGraph.h>

Inheritance diagram for geos::geomgraph::GeometryGraph:

Public Member Functions
	GeometryGraph (uint8_t newArgIndex, const geom::Geometry *newParentGeom)
	GeometryGraph (uint8_t newArgIndex, const geom::Geometry *newParentGeom, const algorithm::BoundaryNodeRule &boundaryNodeRule)
const geom::Geometry *	getGeometry ()
void	getBoundaryNodes (std::vector< Node * > &bdyNodes)
	Returned object is owned by this GeometryGraph.
std::vector< Node * > *	getBoundaryNodes ()
geom::CoordinateSequence *	getBoundaryPoints ()
	Returned object is owned by this GeometryGraph.
Edge *	findEdge (const geom::LineString *line) const
void	computeSplitEdges (std::vector< Edge * > *edgelist)
void	addEdge (Edge *e)
void	addPoint (geom::Coordinate &pt)
std::unique_ptr< index::SegmentIntersector >	computeSelfNodes (algorithm::LineIntersector *li, bool computeRingSelfNodes, const geom::Envelope *env=nullptr)
	Compute self-nodes, taking advantage of the Geometry type to minimize the number of intersection tests. (E.g. rings are not tested for self-intersection, since they are assumed to be valid).
std::unique_ptr< index::SegmentIntersector >	computeSelfNodes (algorithm::LineIntersector &li, bool computeRingSelfNodes, const geom::Envelope *env=nullptr)
std::unique_ptr< index::SegmentIntersector >	computeEdgeIntersections (GeometryGraph *g, algorithm::LineIntersector *li, bool includeProper, const geom::Envelope *env=nullptr)
std::vector< Edge * > *	getEdges ()
bool	hasTooFewPoints ()
const geom::Coordinate &	getInvalidPoint ()
const algorithm::BoundaryNodeRule &	getBoundaryNodeRule () const
Public Member Functions inherited from geos::geomgraph::PlanarGraph
	PlanarGraph (const NodeFactory &nodeFact)
std::vector< Edge * >::iterator	getEdgeIterator ()
std::vector< EdgeEnd * > *	getEdgeEnds ()
bool	isBoundaryNode (uint8_t geomIndex, const geom::Coordinate &coord)
void	add (EdgeEnd *e)
NodeMap::iterator	getNodeIterator ()
void	getNodes (std::vector< Node * > &)
Node *	addNode (Node *node)
Node *	addNode (const geom::Coordinate &coord)
Node *	find (geom::Coordinate &coord)
void	addEdges (const std::vector< Edge * > &edgesToAdd)
	Add a set of edges to the graph. For each edge two DirectedEdges will be created. DirectedEdges are NOT linked by this method.
void	linkResultDirectedEdges ()
void	linkAllDirectedEdges ()
EdgeEnd *	findEdgeEnd (Edge *e)
	Returns the EdgeEnd which has edge e as its base edge (MD 18 Feb 2002 - this should return a pair of edges)
Edge *	findEdge (const geom::Coordinate &p0, const geom::Coordinate &p1)
	Returns the edge whose first two coordinates are p0 and p1.
Edge *	findEdgeInSameDirection (const geom::Coordinate &p0, const geom::Coordinate &p1)
	Returns the edge which starts at p0 and whose first segment is parallel to p1.
std::string	printEdges ()
NodeMap *	getNodeMap ()

Static Public Member Functions
static bool	isInBoundary (int boundaryCount)
static geom::Location	determineBoundary (int boundaryCount)
static geom::Location	determineBoundary (const algorithm::BoundaryNodeRule &boundaryNodeRule, int boundaryCount)
Static Public Member Functions inherited from geos::geomgraph::PlanarGraph
template<typename It >
static void	linkResultDirectedEdges (It first, It last)
	For nodes in the collection (first..last), link the DirectedEdges at the node that are in the result.

Additional Inherited Members
Protected Member Functions inherited from geos::geomgraph::PlanarGraph
void	insertEdge (Edge *e)
Protected Attributes inherited from geos::geomgraph::PlanarGraph
std::vector< Edge * > *	edges
NodeMap *	nodes
std::vector< EdgeEnd * > *	edgeEndList

Detailed Description

A GeometryGraph is a graph that models a given Geometry.

Member Function Documentation

computeSelfNodes()

std::unique_ptr< index::SegmentIntersector > geos::geomgraph::GeometryGraph::computeSelfNodes ( algorithm::LineIntersector *  li, bool  computeRingSelfNodes, const geom::Envelope *  env = nullptr  )

inline

Compute self-nodes, taking advantage of the Geometry type to minimize the number of intersection tests. (E.g. rings are not tested for self-intersection, since they are assumed to be valid).

Parameters

li	the LineIntersector to use
computeRingSelfNodes	if false, intersection checks are optimized to not test rings for self-intersection
env	an Envelope

Returns

the SegmentIntersector used, containing information about the intersections found

---

The documentation for this class was generated from the following file:

• GeometryGraph.h