Find shared paths among two linear Geometry objects. More...

Public Types
typedef std::vector< geom::LineString * >	PathList
	LineString vector (list of edges)

Public Member Functions
	SharedPathsOp (const geom::Geometry &g1, const geom::Geometry &g2)

void	getSharedPaths (PathList &sameDirection, PathList &oppositeDirection)

Static Public Member Functions
static void	sharedPathsOp (const geom::Geometry &g1, const geom::Geometry &g2, PathList &sameDirection, PathList &oppositeDirection)

static void	clearEdges (PathList &from)
	Delete all edges in the list.

Detailed Description

Find shared paths among two linear Geometry objects.

For each shared path report if it direction is the same or opposite.

Paths reported as shared are given in the direction they appear in the first geometry.

Remarks: Developed by Sandro Santilli (strk@.nosp@m.kbt..nosp@m.io) for Faunalia (http://www.faunalia.it) with funding from Regione Toscana - Settore SISTEMA INFORMATIVO TERRITORIALE ED AMBIENTALE - for the project: "Sviluppo strumenti software per il trattamento di dati geografici basati su QuantumGIS e Postgis (CIG 0494241492)"

Constructor & Destructor Documentation

geos::operation::sharedpaths::SharedPathsOp::SharedPathsOp	(	const geom::Geometry &	g1,
		const geom::Geometry &	g2
	)

Constructor

Parameters

g1	First geometry. Must be linear.
g2	Second geometry. Must be linear.

void geos::operation::sharedpaths::SharedPathsOp::getSharedPaths	(	PathList &	sameDirection,
		PathList &	oppositeDirection
	)

Get shared paths

Parameters

sameDirection	Shared edges having the same direction are pushed onto this vector. They'll be of type geom::LineString. Ownership of the edges is transferred.
oppositeDirection	Shared edges having the opposite direction are pushed onto this vector. They'll be of type geom::LineString. Ownership of the edges is transferred.

static void geos::operation::sharedpaths::SharedPathsOp::sharedPathsOp	(	const geom::Geometry &	g1,
		const geom::Geometry &	g2,
		PathList &	sameDirection,
		PathList &	oppositeDirection
	)

static

Find paths shared between two linear geometries

Parameters

g1	First geometry. Must be linear.
g2	Second geometry. Must be linear.
sameDirection	Shared edges having the same direction are pushed onto this vector. They'll be of type LineString. Ownership of the edges is transferred.
oppositeDirection	Shared edges having the opposite direction are pushed onto this vector. They'll be of type geom::LineString. Ownership of the edges is transferred.

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