geos::simplify::DouglasPeuckerLineSimplifier Class Reference

Simplifies a linestring (sequence of points) using the standard Douglas-Peucker algorithm. More...

#include <DouglasPeuckerLineSimplifier.h>

Public Types
typedef std::vector< short int >	BoolVect
typedef std::unique_ptr< BoolVect >	BoolVectAutoPtr
typedef std::vector< geom::Coordinate >	CoordsVect
typedef std::unique_ptr< CoordsVect >	CoordsVectAutoPtr

Public Member Functions
	DouglasPeuckerLineSimplifier (const CoordsVect &nPts)
void	setDistanceTolerance (double nDistanceTolerance)
	Sets the distance tolerance for the simplification. More...
CoordsVectAutoPtr	simplify ()
	Returns a newly allocated Coordinate vector, wrapped into an unique_ptr. More...

Static Public Member Functions
static CoordsVectAutoPtr	simplify (const CoordsVect &nPts, double distanceTolerance)
	Returns a newly allocated Coordinate vector, wrapped into an unique_ptr. More...

Private Member Functions
void	simplifySection (std::size_t i, std::size_t j)
	DouglasPeuckerLineSimplifier (const DouglasPeuckerLineSimplifier &other)=delete
DouglasPeuckerLineSimplifier &	operator= (const DouglasPeuckerLineSimplifier &rhs)=delete

Private Attributes
const CoordsVect &	pts
BoolVectAutoPtr	usePt
double	distanceTolerance

Detailed Description

Simplifies a linestring (sequence of points) using the standard Douglas-Peucker algorithm.

Definition at line 45 of file DouglasPeuckerLineSimplifier.h.

Member Typedef Documentation

typedef std::vector<short int> geos::simplify::DouglasPeuckerLineSimplifier::BoolVect

Definition at line 49 of file DouglasPeuckerLineSimplifier.h.

typedef std::unique_ptr<BoolVect> geos::simplify::DouglasPeuckerLineSimplifier::BoolVectAutoPtr

Definition at line 50 of file DouglasPeuckerLineSimplifier.h.

typedef std::vector<geom::Coordinate> geos::simplify::DouglasPeuckerLineSimplifier::CoordsVect

Definition at line 52 of file DouglasPeuckerLineSimplifier.h.

typedef std::unique_ptr<CoordsVect> geos::simplify::DouglasPeuckerLineSimplifier::CoordsVectAutoPtr

Definition at line 53 of file DouglasPeuckerLineSimplifier.h.

Constructor & Destructor Documentation

geos::simplify::DouglasPeuckerLineSimplifier::DouglasPeuckerLineSimplifier

(

const CoordsVect &

nPts

)

geos::simplify::DouglasPeuckerLineSimplifier::DouglasPeuckerLineSimplifier ( const DouglasPeuckerLineSimplifier &  other )

privatedelete

Member Function Documentation

DouglasPeuckerLineSimplifier& geos::simplify::DouglasPeuckerLineSimplifier::operator= ( const DouglasPeuckerLineSimplifier &  rhs )

privatedelete

void geos::simplify::DouglasPeuckerLineSimplifier::setDistanceTolerance

(

double

nDistanceTolerance

)

Sets the distance tolerance for the simplification.

All vertices in the simplified linestring will be within this distance of the original linestring.

Parameters

nDistanceTolerance

the approximation tolerance to use

static CoordsVectAutoPtr geos::simplify::DouglasPeuckerLineSimplifier::simplify ( const CoordsVect &  nPts, double  distanceTolerance  )

static

Returns a newly allocated Coordinate vector, wrapped into an unique_ptr.

CoordsVectAutoPtr geos::simplify::DouglasPeuckerLineSimplifier::simplify

(

)

Returns a newly allocated Coordinate vector, wrapped into an unique_ptr.

void geos::simplify::DouglasPeuckerLineSimplifier::simplifySection ( std::size_t  i, std::size_t  j  )

private

Member Data Documentation

double geos::simplify::DouglasPeuckerLineSimplifier::distanceTolerance

private

Definition at line 86 of file DouglasPeuckerLineSimplifier.h.

const CoordsVect& geos::simplify::DouglasPeuckerLineSimplifier::pts

private

Definition at line 84 of file DouglasPeuckerLineSimplifier.h.

BoolVectAutoPtr geos::simplify::DouglasPeuckerLineSimplifier::usePt

private

Definition at line 85 of file DouglasPeuckerLineSimplifier.h.

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

• DouglasPeuckerLineSimplifier.h