geos::operation::overlayng::OverlayGraph Class Reference

#include <OverlayGraph.h>

Public Member Functions
	OverlayGraph ()
	OverlayGraph (const OverlayGraph &g)=delete
OverlayGraph &	operator= (const OverlayGraph &g)=delete
OverlayEdge *	addEdge (Edge *edge)
std::vector< OverlayEdge * > &	getEdges ()
std::vector< OverlayEdge * >	getNodeEdges ()
OverlayEdge *	getNodeEdge (const Coordinate &nodePt) const
std::vector< OverlayEdge * >	getResultAreaEdges ()
OverlayLabel *	createOverlayLabel (const Edge *edge)

Friends
std::ostream &	operator<< (std::ostream &os, const OverlayGraph &og)

Detailed Description

A planar graph of OverlayEdge, representing the topology resulting from an overlay operation. Each source Edge is represented by two OverlayEdges, with opposite orientation. A single OverlayLabel is created for each symmetric pair of OverlayEdges.

Author

mdavis

Constructor & Destructor Documentation

OverlayGraph()

geos::operation::overlayng::OverlayGraph::OverlayGraph

(

)

Creates a new graph for a set of noded, labelled Edges.

Member Function Documentation

addEdge()

OverlayEdge* geos::operation::overlayng::OverlayGraph::addEdge

(

Edge *

edge

)

Adds an edge between the coordinates orig and dest to this graph. Only valid edges can be added (in particular, zero-length segments cannot be added)

createOverlayLabel()

OverlayLabel* geos::operation::overlayng::OverlayGraph::createOverlayLabel

(

const Edge *

edge

)

Create a single OverlayLabel in local std::deque storage and return a pointer to the stored object.

getEdges()

std::vector<OverlayEdge*>& geos::operation::overlayng::OverlayGraph::getEdges

(

)

Gets the set of edges in this graph. Only one of each symmetric pair of OverlayEdges is included. The opposing edge can be found by using OverlayEdge#sym().

getNodeEdge()

OverlayEdge* geos::operation::overlayng::OverlayGraph::getNodeEdge

(

const Coordinate &

nodePt

)

const

Gets an edge originating at the given node point.

getNodeEdges()

std::vector<OverlayEdge*> geos::operation::overlayng::OverlayGraph::getNodeEdges

(

)

Gets the collection of edges representing the nodes in this graph. For each star of edges originating at a node a single representative edge is included. The other edges around the node can be found by following the next and prev links.

getResultAreaEdges()

std::vector<OverlayEdge*> geos::operation::overlayng::OverlayGraph::getResultAreaEdges

(

)

Gets the representative edges marked as being in the result area.

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

• OverlayGraph.h