geos::operation::overlayng::IntersectionPointBuilder Class Reference

#include <IntersectionPointBuilder.h>

Collaboration diagram for geos::operation::overlayng::IntersectionPointBuilder:

Public Member Functions
	IntersectionPointBuilder (OverlayGraph *p_graph, const geom::GeometryFactory *geomFact)
std::vector< std::unique_ptr< geom::Point > >	getPoints ()
	IntersectionPointBuilder (const IntersectionPointBuilder &)=delete
IntersectionPointBuilder &	operator= (const IntersectionPointBuilder &)=delete
void	setStrictMode (bool p_isStrictMode)

Private Member Functions
void	addResultPoints ()
bool	isResultPoint (OverlayEdge *nodeEdge) const
bool	isEdgeOf (const OverlayLabel *label, int i) const

Private Attributes
OverlayGraph *	graph
const geom::GeometryFactory *	geometryFactory
std::vector< std::unique_ptr< geom::Point > >	points
bool	isAllowCollapseLines

Detailed Description

Extracts Point resultants from an overlay graph created by an Intersection operation between non-Point inputs. Points may be created during intersection if lines or areas touch one another at single points. Intersection is the only overlay operation which can result in Points from non-Point inputs.

Overlay operations where one or more inputs are Points are handled via a different code path.

Author

Martin Davis

See also

OverlayPoints

Definition at line 60 of file IntersectionPointBuilder.h.

Constructor & Destructor Documentation

geos::operation::overlayng::IntersectionPointBuilder::IntersectionPointBuilder ( OverlayGraph *  p_graph, const geom::GeometryFactory *  geomFact  )

inline

Definition at line 90 of file IntersectionPointBuilder.h.

geos::operation::overlayng::IntersectionPointBuilder::IntersectionPointBuilder ( const IntersectionPointBuilder &  )

delete

Member Function Documentation

void geos::operation::overlayng::IntersectionPointBuilder::addResultPoints ( )

private

std::vector<std::unique_ptr<geom::Point> > geos::operation::overlayng::IntersectionPointBuilder::getPoints

(

)

bool geos::operation::overlayng::IntersectionPointBuilder::isEdgeOf ( const OverlayLabel *  label, int  i  ) const

private

bool geos::operation::overlayng::IntersectionPointBuilder::isResultPoint ( OverlayEdge *  nodeEdge ) const

private

Tests if a node is a result point. This is the case if the node is incident on edges from both inputs, and none of the edges are themselves in the result.

IntersectionPointBuilder& geos::operation::overlayng::IntersectionPointBuilder::operator= ( const IntersectionPointBuilder &  )

delete

void geos::operation::overlayng::IntersectionPointBuilder::setStrictMode ( bool  p_isStrictMode )

inline

Definition at line 101 of file IntersectionPointBuilder.h.

Member Data Documentation

const geom::GeometryFactory* geos::operation::overlayng::IntersectionPointBuilder::geometryFactory

private

Definition at line 66 of file IntersectionPointBuilder.h.

OverlayGraph* geos::operation::overlayng::IntersectionPointBuilder::graph

private

Definition at line 65 of file IntersectionPointBuilder.h.

bool geos::operation::overlayng::IntersectionPointBuilder::isAllowCollapseLines

private

Controls whether lines created by area topology collapses to participate in the result computation. True provides the original JTS semantics.

Definition at line 73 of file IntersectionPointBuilder.h.

std::vector<std::unique_ptr<geom::Point> > geos::operation::overlayng::IntersectionPointBuilder::points

private

Definition at line 67 of file IntersectionPointBuilder.h.

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

• IntersectionPointBuilder.h