The node component of a geometry graph. More...

#include <Node.h>

Inheritance diagram for geos::geomgraph::Node:

Collaboration diagram for geos::geomgraph::Node:

Public Member Functions
	Node (const geom::Coordinate &newCoord, EdgeEndStar *newEdges)

	~Node () override

virtual const geom::Coordinate &	getCoordinate () const

virtual EdgeEndStar *	getEdges ()

bool	isIsolated () const override

virtual void	add (EdgeEnd *e)
	Add the edge to the list of edges at this node. More...

virtual void	mergeLabel (const Node &n)

virtual void	mergeLabel (const Label &label2)
	To merge labels for two nodes, the merged location for each LabelElement is computed. More...

virtual void	setLabel (int argIndex, geom::Location onLocation)

virtual void	setLabelBoundary (int argIndex)
	Updates the label of a node to BOUNDARY, obeying the mod-2 boundaryDetermination rule. More...

virtual geom::Location	computeMergedLocation (const Label &label2, int eltIndex)

virtual std::string	print ()

virtual const std::vector< double > &	getZ () const

virtual void	addZ (double)

virtual bool	isIncidentEdgeInResult () const
	Tests whether any incident edge is flagged as being in the result. More...

Public Member Functions inherited from geos::geomgraph::GraphComponent
	GraphComponent ()

	GraphComponent (const Label &newLabel)

virtual	~GraphComponent ()=default

Label &	getLabel ()

const Label &	getLabel () const

void	setLabel (const Label &newLabel)

virtual void	setInResult (bool p_isInResult)

virtual bool	isInResult () const

virtual void	setCovered (bool isCovered)

virtual bool	isCovered () const

virtual bool	isCoveredSet () const

virtual bool	isVisited () const

virtual void	setVisited (bool p_isVisited)

virtual void	updateIM (geom::IntersectionMatrix &im)

Protected Member Functions
void	testInvariant () const

void	computeIM (geom::IntersectionMatrix &) override
	Basic nodes do not compute IMs. More...

Protected Attributes
geom::Coordinate	coord

EdgeEndStar *	edges

Protected Attributes inherited from geos::geomgraph::GraphComponent
Label	label

Private Attributes
std::vector< double >	zvals

double	ztot

Friends
std::ostream &	operator<< (std::ostream &os, const Node &node)

Detailed Description

The node component of a geometry graph.

Definition at line 62 of file geomgraph/Node.h.

Constructor & Destructor Documentation

geos::geomgraph::Node::Node	(	const geom::Coordinate &	newCoord,
		EdgeEndStar *	newEdges
	)

geos::geomgraph::Node::~Node ( )

override

Member Function Documentation

virtual void geos::geomgraph::Node::add ( EdgeEnd * e )

virtual

Add the edge to the list of edges at this node.

virtual void geos::geomgraph::Node::addZ ( double )

virtual

void geos::geomgraph::Node::computeIM ( geom::IntersectionMatrix & )

inlineoverrideprotectedvirtual

Basic nodes do not compute IMs.

Implements geos::geomgraph::GraphComponent.

Reimplemented in geos::operation::relate::RelateNode.

Definition at line 144 of file geomgraph/Node.h.

virtual geom::Location geos::geomgraph::Node::computeMergedLocation	(	const Label &	label2,
		int	eltIndex
	)

virtual

The location for a given eltIndex for a node will be one of { null, INTERIOR, BOUNDARY }. A node may be on both the boundary and the interior of a geometry; in this case, the rule is that the node is considered to be in the boundary. The merged location is the maximum of the two input values.

virtual const geom::Coordinate& geos::geomgraph::Node::getCoordinate ( ) const

virtual

Referenced by geos::geomgraph::NodeMap::testInvariant().

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virtual EdgeEndStar* geos::geomgraph::Node::getEdges ( )

virtual

Referenced by geos::geomgraph::PlanarGraph::linkResultDirectedEdges().

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virtual const std::vector<double>& geos::geomgraph::Node::getZ ( ) const

virtual

virtual bool geos::geomgraph::Node::isIncidentEdgeInResult ( ) const

virtual

Tests whether any incident edge is flagged as being in the result.

This test can be used to determine if the node is in the result, since if any incident edge is in the result, the node must be in the result as well.

Returns: true if any indicident edge in the in the result

bool geos::geomgraph::Node::isIsolated ( ) const

overridevirtual

Implements geos::geomgraph::GraphComponent.

virtual void geos::geomgraph::Node::mergeLabel ( const Node & n )

virtual

virtual void geos::geomgraph::Node::mergeLabel ( const Label & label2 )

virtual

To merge labels for two nodes, the merged location for each LabelElement is computed.

The location for the corresponding node LabelElement is set to the result, as long as the location is non-null.

virtual std::string geos::geomgraph::Node::print ( )

virtual

virtual void geos::geomgraph::Node::setLabel	(	int	argIndex,
		geom::Location	onLocation
	)

virtual

virtual void geos::geomgraph::Node::setLabelBoundary ( int argIndex )

virtual

Updates the label of a node to BOUNDARY, obeying the mod-2 boundaryDetermination rule.

void geos::geomgraph::Node::testInvariant ( ) const

inlineprotected

Definition at line 157 of file geomgraph/Node.h.

References geos::geom::Coordinate::equals2D(), and geos::geomgraph::EdgeEnd::getCoordinate().

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Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	os,
		const Node &	node
	)

friend

Member Data Documentation

geom::Coordinate geos::geomgraph::Node::coord

protected

Definition at line 136 of file geomgraph/Node.h.

EdgeEndStar* geos::geomgraph::Node::edges

protected

Definition at line 138 of file geomgraph/Node.h.

double geos::geomgraph::Node::ztot

private

Definition at line 150 of file geomgraph/Node.h.

std::vector<double> geos::geomgraph::Node::zvals

private

Definition at line 148 of file geomgraph/Node.h.

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

geomgraph/Node.h

Public Member Functions

Protected Member Functions

Protected Attributes

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation