#include <Edge.h>

Public Member Functions
	Edge ()

	Edge (geom::CoordinateSequence p_pts, const EdgeSourceInfo info)

std::unique_ptr< geom::CoordinateSequence >	getCoordinates ()

const geom::CoordinateSequence *	getCoordinatesRO () const

geom::CoordinateSequence *	releaseCoordinates ()

const geom::Coordinate &	getCoordinate (size_t index) const

std::size_t	size () const

bool	direction () const

bool	relativeDirection (const Edge *edge2) const

int	dimension (int geomIndex) const

void	merge (const Edge *edge)

void	populateLabel (OverlayLabel &ovl) const

bool	compareTo (const Edge &e) const

Static Public Member Functions
static bool	isCollapsed (const geom::CoordinateSequence *pts)

Private Member Functions
void	initLabel (OverlayLabel &lbl, int geomIndex, int dim, int depthDelta, bool isHole) const

int	labelDim (int dim, int depthDelta) const

bool	isHole (int index) const

bool	isBoundary (int geomIndex) const

bool	isShell (int geomIndex) const

geom::Location	locationRight (int depthDelta) const

geom::Location	locationLeft (int depthDelta) const

int	delSign (int depthDel) const

void	copyInfo (const EdgeSourceInfo *info)

bool	isHoleMerged (int geomIndex, const Edge edge1, const Edge edge2) const

Private Attributes
int	aDim = OverlayLabel::DIM_UNKNOWN

int	aDepthDelta = 0

bool	aIsHole = false

int	bDim = OverlayLabel::DIM_UNKNOWN

int	bDepthDelta = 0

bool	bIsHole = false

std::unique_ptr< geom::CoordinateSequence >	pts

Friends
std::ostream &	operator<< (std::ostream &os, const Edge &e)

Detailed Description

Represents the underlying linework for edges in a topology graph, and carries the topology information derived from the two parent geometries. The edge may be the result of the merging of two or more edges which have the same underlying linework (although possibly different orientations). In this case the topology information is derived from the merging of the information in the source edges. Merged edges can occur in the following situations

Due to topology collapse caused by snapping or rounding of polygonal geometries.
Due to coincident linework in a linear input

The source edges may have the same parent geometry, or different ones, or a mix of the two.

Author: mdavis

Definition at line 62 of file operation/overlayng/Edge.h.

Constructor & Destructor Documentation

geos::operation::overlayng::Edge::Edge ( )

inline

Definition at line 114 of file operation/overlayng/Edge.h.

References geos::geom::operator<<().

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geos::operation::overlayng::Edge::Edge	(	geom::CoordinateSequence *	p_pts,
		const EdgeSourceInfo *	info
	)

Member Function Documentation

bool geos::operation::overlayng::Edge::compareTo ( const Edge & e ) const

inline

Definition at line 159 of file operation/overlayng/Edge.h.

References geos::geom::Coordinate::compareTo(), geos::operation::overlayng::EdgeComparator(), and getCoordinate().

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void geos::operation::overlayng::Edge::copyInfo ( const EdgeSourceInfo * info )

private

int geos::operation::overlayng::Edge::delSign ( int depthDel ) const

private

int geos::operation::overlayng::Edge::dimension ( int geomIndex ) const

bool geos::operation::overlayng::Edge::direction ( ) const

const geom::Coordinate& geos::operation::overlayng::Edge::getCoordinate ( size_t index ) const

Referenced by compareTo().

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std::unique_ptr<geom::CoordinateSequence> geos::operation::overlayng::Edge::getCoordinates ( )

const geom::CoordinateSequence* geos::operation::overlayng::Edge::getCoordinatesRO ( ) const

void geos::operation::overlayng::Edge::initLabel	(	OverlayLabel &	lbl,
		int	geomIndex,
		int	dim,
		int	depthDelta,
		bool	isHole
	)		const

private

Populates the label for an edge resulting from an input geometry.

If the edge is not part of the input, the label is left as NOT_PART
If input is an Area and the edge is on the boundary (which may include some collapses), edge is marked as an AREA edge and side locations are assigned
If input is an Area and the edge is collapsed (depth delta = 0), the label is set to COLLAPSE. The location will be determined later by evaluating the final graph topology.
If input is a Line edge is set to a LINE edge. For line edges the line location is not significant (since there is no parent area for which to determine location).

bool geos::operation::overlayng::Edge::isBoundary ( int geomIndex ) const

private

static bool geos::operation::overlayng::Edge::isCollapsed ( const geom::CoordinateSequence * pts )

static

bool geos::operation::overlayng::Edge::isHole ( int index ) const

private

bool geos::operation::overlayng::Edge::isHoleMerged	(	int	geomIndex,
		const Edge *	edge1,
		const Edge *	edge2
	)		const

private

bool geos::operation::overlayng::Edge::isShell ( int geomIndex ) const

private

Tests whether the edge is part of a shell in the given geometry. This is only the case if the edge is a boundary.

int geos::operation::overlayng::Edge::labelDim	(	int	dim,
		int	depthDelta
	)		const

private

geom::Location geos::operation::overlayng::Edge::locationLeft ( int depthDelta ) const

private

geom::Location geos::operation::overlayng::Edge::locationRight ( int depthDelta ) const

private

void geos::operation::overlayng::Edge::merge ( const Edge * edge )

Merges an edge into this edge, updating the topology info accordingly.

void geos::operation::overlayng::Edge::populateLabel ( OverlayLabel & ovl ) const

bool geos::operation::overlayng::Edge::relativeDirection ( const Edge * edge2 ) const

Compares two coincident edges to determine whether they have the same or opposite direction.

geom::CoordinateSequence* geos::operation::overlayng::Edge::releaseCoordinates ( )

std::size_t geos::operation::overlayng::Edge::size ( ) const

Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	os,
		const Edge &	e
	)

friend

Member Data Documentation

int geos::operation::overlayng::Edge::aDepthDelta = 0

private

Definition at line 68 of file operation/overlayng/Edge.h.

int geos::operation::overlayng::Edge::aDim = OverlayLabel::DIM_UNKNOWN

private

Definition at line 67 of file operation/overlayng/Edge.h.

bool geos::operation::overlayng::Edge::aIsHole = false

private

Definition at line 69 of file operation/overlayng/Edge.h.

int geos::operation::overlayng::Edge::bDepthDelta = 0

private

Definition at line 71 of file operation/overlayng/Edge.h.

int geos::operation::overlayng::Edge::bDim = OverlayLabel::DIM_UNKNOWN

private

Definition at line 70 of file operation/overlayng/Edge.h.

bool geos::operation::overlayng::Edge::bIsHole = false

private

Definition at line 72 of file operation/overlayng/Edge.h.

std::unique_ptr<geom::CoordinateSequence> geos::operation::overlayng::Edge::pts

private

Definition at line 73 of file operation/overlayng/Edge.h.

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

operation/overlayng/Edge.h

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation