geos::operation::buffer::BufferCurveSetBuilder Class Reference

Creates all the raw offset curves for a buffer of a Geometry. More...

#include <BufferCurveSetBuilder.h>

Public Member Functions
	BufferCurveSetBuilder (const geom::Geometry &newInputGeom, double newDistance, const geom::PrecisionModel *newPm, const BufferParameters &newBufParams)
	Constructor.
	~BufferCurveSetBuilder ()
	Destructor.
std::vector< noding::SegmentString * > &	getCurves ()
	Computes the set of raw offset curves for the buffer.
void	addCurves (const std::vector< geom::CoordinateSequence * > &lineList, geom::Location leftLoc, geom::Location rightLoc)
	Add raw curves for a set of CoordinateSequences.
void	setInvertOrientation (bool p_isInvertOrientation)

Detailed Description

Creates all the raw offset curves for a buffer of a Geometry.

Raw curves need to be noded together and polygonized to form the final buffer area.

Member Function Documentation

addCurves()

void geos::operation::buffer::BufferCurveSetBuilder::addCurves	(	const std::vector< geom::CoordinateSequence * > &	lineList,
		geom::Location	leftLoc,
		geom::Location	rightLoc
	)

Add raw curves for a set of CoordinateSequences.

Parameters

lineList	is a list of CoordinateSequence, ownership of which is transferred here
leftLoc	left location
rightLoc	right location

getCurves()

std::vector< noding::SegmentString * > & geos::operation::buffer::BufferCurveSetBuilder::getCurves

(

)

Computes the set of raw offset curves for the buffer.

Each offset curve has an attached geomgraph::Label indicating its left and right location.

Returns

a Collection of SegmentStrings representing the raw buffer curves

setInvertOrientation()

void geos::operation::buffer::BufferCurveSetBuilder::setInvertOrientation ( bool  p_isInvertOrientation )

inline

Sets whether the offset curve is generated using the inverted orientation of input rings. This allows generating a buffer(0) polygon from the smaller lobes of self-crossing rings.

Parameters

p_isInvertOrientation

true if input ring orientation should be inverted

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

• BufferCurveSetBuilder.h