geos::operation::overlay::LineBuilder Class Reference

Forms JTS LineStrings out of a the graph of geomgraph::DirectedEdge created by an OverlayOp. More...

#include <LineBuilder.h>

Collaboration diagram for geos::operation::overlay::LineBuilder:

Public Member Functions
	LineBuilder (OverlayOp *newOp, const geom::GeometryFactory *newGeometryFactory, algorithm::PointLocator *newPtLocator)
	~LineBuilder ()=default
std::vector< geom::LineString * > *	build (OverlayOp::OpCode opCode)
void	collectLineEdge (geomgraph::DirectedEdge *de, OverlayOp::OpCode opCode, std::vector< geomgraph::Edge * > *edges)

Private Member Functions
void	findCoveredLineEdges ()
void	collectLines (OverlayOp::OpCode opCode)
void	buildLines (OverlayOp::OpCode opCode)
void	labelIsolatedLines (std::vector< geomgraph::Edge * > *edgesList)
void	collectBoundaryTouchEdge (geomgraph::DirectedEdge *de, OverlayOp::OpCode opCode, std::vector< geomgraph::Edge * > *edges)
void	labelIsolatedLine (geomgraph::Edge *e, int targetIndex)
void	propagateZ (geom::CoordinateSequence *cs)

Private Attributes
OverlayOp *	op
const geom::GeometryFactory *	geometryFactory
algorithm::PointLocator *	ptLocator
std::vector< geomgraph::Edge * >	lineEdgesList
std::vector< geom::LineString * > *	resultLineList

Detailed Description

Forms JTS LineStrings out of a the graph of geomgraph::DirectedEdge created by an OverlayOp.

Definition at line 63 of file LineBuilder.h.

Constructor & Destructor Documentation

geos::operation::overlay::LineBuilder::LineBuilder	(	OverlayOp *	newOp,
		const geom::GeometryFactory *	newGeometryFactory,
		algorithm::PointLocator *	newPtLocator
	)

geos::operation::overlay::LineBuilder::~LineBuilder ( )

default

Member Function Documentation

std::vector<geom::LineString*>* geos::operation::overlay::LineBuilder::build

(

OverlayOp::OpCode

opCode

)

Returns

a list of the LineStrings in the result of the specified overlay operation

void geos::operation::overlay::LineBuilder::buildLines ( OverlayOp::OpCode  opCode )

private

void geos::operation::overlay::LineBuilder::collectBoundaryTouchEdge ( geomgraph::DirectedEdge *  de, OverlayOp::OpCode  opCode, std::vector< geomgraph::Edge * > *  edges  )

private

Collect edges from Area inputs which should be in the result but which have not been included in a result area. This happens ONLY:

• during an intersection when the boundaries of two areas touch in a line segment
• OR as a result of a dimensional collapse.

void geos::operation::overlay::LineBuilder::collectLineEdge	(	geomgraph::DirectedEdge *	de,
		OverlayOp::OpCode	opCode,
		std::vector< geomgraph::Edge * > *	edges
	)

Collect line edges which are in the result.

Line edges are in the result if they are not part of an area boundary, if they are in the result of the overlay operation, and if they are not covered by a result area.

Parameters

de	the directed edge to test.
opCode	the overlap operation
edges	the list of included line edges.

void geos::operation::overlay::LineBuilder::collectLines ( OverlayOp::OpCode  opCode )

private

void geos::operation::overlay::LineBuilder::findCoveredLineEdges ( )

private

void geos::operation::overlay::LineBuilder::labelIsolatedLine ( geomgraph::Edge *  e, int  targetIndex  )

private

Label an isolated node with its relationship to the target geometry.

void geos::operation::overlay::LineBuilder::labelIsolatedLines ( std::vector< geomgraph::Edge * > *  edgesList )

private

void geos::operation::overlay::LineBuilder::propagateZ ( geom::CoordinateSequence *  cs )

private

Member Data Documentation

const geom::GeometryFactory* geos::operation::overlay::LineBuilder::geometryFactory

private

Definition at line 95 of file LineBuilder.h.

std::vector<geomgraph::Edge*> geos::operation::overlay::LineBuilder::lineEdgesList

private

Definition at line 97 of file LineBuilder.h.

OverlayOp* geos::operation::overlay::LineBuilder::op

private

Definition at line 94 of file LineBuilder.h.

algorithm::PointLocator* geos::operation::overlay::LineBuilder::ptLocator

private

Definition at line 96 of file LineBuilder.h.

std::vector<geom::LineString*>* geos::operation::overlay::LineBuilder::resultLineList

private

Definition at line 98 of file LineBuilder.h.

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

• LineBuilder.h