geos::geomgraph::EdgeRing Class Reference

#include <EdgeRing.h>

Inheritance diagram for geos::geomgraph::EdgeRing:

Collaboration diagram for geos::geomgraph::EdgeRing:

Public Member Functions
	EdgeRing (DirectedEdge *newStart, const geom::GeometryFactory *newGeometryFactory)
virtual	~EdgeRing ()=default
bool	isIsolated ()
bool	isHole ()
geom::LinearRing *	getLinearRing ()
Label &	getLabel ()
bool	isShell ()
EdgeRing *	getShell ()
void	setShell (EdgeRing *newShell)
void	addHole (EdgeRing *edgeRing)
std::unique_ptr< geom::Polygon >	toPolygon (const geom::GeometryFactory *geometryFactory)
void	computeRing ()
virtual DirectedEdge *	getNext (DirectedEdge *de)=0
virtual void	setEdgeRing (DirectedEdge *de, EdgeRing *er)=0
std::vector< DirectedEdge * > &	getEdges ()
int	getMaxNodeDegree ()
void	setInResult ()
bool	containsPoint (const geom::Coordinate &p)
void	testInvariant () const

Protected Member Functions
void	computePoints (DirectedEdge *newStart)
void	mergeLabel (const Label &deLabel)
void	mergeLabel (const Label &deLabel, int geomIndex)
	Merge the RHS label from a DirectedEdge into the label for this EdgeRing. More...
void	addPoints (Edge *edge, bool isForward, bool isFirstEdge)

Protected Attributes
DirectedEdge *	startDe
const geom::GeometryFactory *	geometryFactory
std::vector< std::unique_ptr< EdgeRing > >	holes
	a list of EdgeRings which are holes in this EdgeRing More...

Private Member Functions
void	computeMaxNodeDegree ()

Private Attributes
int	maxNodeDegree
std::vector< DirectedEdge * >	edges
	the DirectedEdges making up this EdgeRing More...
std::vector< geom::Coordinate >	pts
Label	label
std::unique_ptr< geom::LinearRing >	ring
bool	isHoleVar
EdgeRing *	shell
	if non-null, the ring is a hole and this EdgeRing is its containing shell More...

Friends
std::ostream &	operator<< (std::ostream &os, const EdgeRing &er)

Detailed Description

EdgeRing

Definition at line 60 of file geomgraph/EdgeRing.h.

Constructor & Destructor Documentation

geos::geomgraph::EdgeRing::EdgeRing	(	DirectedEdge *	newStart,
		const geom::GeometryFactory *	newGeometryFactory
	)

virtual geos::geomgraph::EdgeRing::~EdgeRing ( )

virtualdefault

Member Function Documentation

void geos::geomgraph::EdgeRing::addHole

(

EdgeRing *

edgeRing

)

void geos::geomgraph::EdgeRing::addPoints ( Edge *  edge, bool  isForward, bool  isFirstEdge  )

protected

void geos::geomgraph::EdgeRing::computeMaxNodeDegree ( )

private

void geos::geomgraph::EdgeRing::computePoints ( DirectedEdge *  newStart )

protected

Exceptions

util::TopologyException

void geos::geomgraph::EdgeRing::computeRing

(

)

Compute a LinearRing from the point list previously collected. Test if the ring is a hole (i.e. if it is CCW) and set the hole flag accordingly.

bool geos::geomgraph::EdgeRing::containsPoint

(

const geom::Coordinate &

p

)

This method will use the computed ring. It will also check any holes, if they have been assigned.

std::vector<DirectedEdge*>& geos::geomgraph::EdgeRing::getEdges

(

)

Returns the list of DirectedEdges that make up this EdgeRing

Label& geos::geomgraph::EdgeRing::getLabel

(

)

geom::LinearRing* geos::geomgraph::EdgeRing::getLinearRing

(

)

Return a pointer to the LinearRing owned by this object. Make a copy if you need it beyond this objects's lifetime.

int geos::geomgraph::EdgeRing::getMaxNodeDegree

(

)

virtual DirectedEdge* geos::geomgraph::EdgeRing::getNext ( DirectedEdge *  de )

pure virtual

Implemented in geos::operation::overlay::MaximalEdgeRing, and geos::operation::overlay::MinimalEdgeRing.

EdgeRing* geos::geomgraph::EdgeRing::getShell

(

)

bool geos::geomgraph::EdgeRing::isHole

(

)

bool geos::geomgraph::EdgeRing::isIsolated

(

)

bool geos::geomgraph::EdgeRing::isShell

(

)

void geos::geomgraph::EdgeRing::mergeLabel ( const Label &  deLabel )

protected

void geos::geomgraph::EdgeRing::mergeLabel ( const Label &  deLabel, int  geomIndex  )

protected

Merge the RHS label from a DirectedEdge into the label for this EdgeRing.

The DirectedEdge label may be null. This is acceptable - it results from a node which is NOT an intersection node between the Geometries (e.g. the end node of a LinearRing). In this case the DirectedEdge label does not contribute any information to the overall labelling, and is simply skipped.

virtual void geos::geomgraph::EdgeRing::setEdgeRing ( DirectedEdge *  de, EdgeRing *  er  )

pure virtual

Implemented in geos::operation::overlay::MaximalEdgeRing, and geos::operation::overlay::MinimalEdgeRing.

void geos::geomgraph::EdgeRing::setInResult

(

)

void geos::geomgraph::EdgeRing::setShell

(

EdgeRing *

newShell

)

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

inline

Definition at line 124 of file geomgraph/EdgeRing.h.

std::unique_ptr<geom::Polygon> geos::geomgraph::EdgeRing::toPolygon

(

const geom::GeometryFactory *

geometryFactory

)

Return a Polygon copying coordinates from this EdgeRing and its holes.

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  os, const EdgeRing &  er  )

friend

Member Data Documentation

std::vector<DirectedEdge*> geos::geomgraph::EdgeRing::edges

private

the DirectedEdges making up this EdgeRing

Definition at line 177 of file geomgraph/EdgeRing.h.

const geom::GeometryFactory* geos::geomgraph::EdgeRing::geometryFactory

protected

Definition at line 146 of file geomgraph/EdgeRing.h.

std::vector<std::unique_ptr<EdgeRing> > geos::geomgraph::EdgeRing::holes

protected

a list of EdgeRings which are holes in this EdgeRing

Definition at line 170 of file geomgraph/EdgeRing.h.

bool geos::geomgraph::EdgeRing::isHoleVar

private

Definition at line 187 of file geomgraph/EdgeRing.h.

Label geos::geomgraph::EdgeRing::label

private

Definition at line 183 of file geomgraph/EdgeRing.h.

int geos::geomgraph::EdgeRing::maxNodeDegree

private

Definition at line 174 of file geomgraph/EdgeRing.h.

std::vector<geom::Coordinate> geos::geomgraph::EdgeRing::pts

private

Definition at line 179 of file geomgraph/EdgeRing.h.

std::unique_ptr<geom::LinearRing> geos::geomgraph::EdgeRing::ring

private

Definition at line 185 of file geomgraph/EdgeRing.h.

EdgeRing* geos::geomgraph::EdgeRing::shell

private

if non-null, the ring is a hole and this EdgeRing is its containing shell

Definition at line 190 of file geomgraph/EdgeRing.h.

DirectedEdge* geos::geomgraph::EdgeRing::startDe

protected

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

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

• geomgraph/EdgeRing.h