#include <pointset.h>

Inheritance diagram for pal::PointSet:

Public Member Functions
	PointSet ()

	PointSet (int nbPoints, double x, double y)

virtual	~PointSet ()

CHullBox *	compute_chull_bbox ()

bool	containsLabelCandidate (double x, double y, double width, double height, double alpha=0) const
	Tests whether a possible label candidate will fit completely within the shape. More...

bool	containsPoint (double x, double y) const
	Tests whether point set contains a specified point. More...

PointSet *	extractShape (int nbPtSh, int imin, int imax, int fps, int fpe, double fptx, double fpty)

const GEOSGeometry *	geos () const
	Returns the point set's GEOS geometry. More...

void	getBoundingBox (double min[2], double max[2]) const

void	getCentroid (double &px, double &py, bool forceInside=false) const

int	getGeosType () const

PointSet *	getHoleOf ()
	Returns NULL if this isn't a hole. More...

int	getNumPoints () const

void	getPointByDistance (double d, double ad, double dl, double px, double py)
	Get a point a set distance along a line geometry. More...

double	length () const
	Returns length of line geometry. More...

double	minDistanceToPoint (double px, double py, double rx=nullptr, double ry=nullptr) const
	Returns the squared minimum distance between the point set geometry and the point (px,py) Optionally, the nearest point is stored in (rx,ry). More...

Static Public Member Functions
static void	splitPolygons (QLinkedList< PointSet > &shapes_toProcess, QLinkedList< PointSet > &shapes_final, double xrm, double yrm)
	Split a concave shape into several convex shapes. More...

Protected Member Functions
	PointSet (double x, double y)

	PointSet (const PointSet &ps)

void	createGeosGeom () const

void	deleteCoords ()

void	invalidateGeos ()

const GEOSPreparedGeometry *	preparedGeom () const

Protected Attributes
int *	cHull

int	cHullSize

PointSet *	holeOf

GEOSGeometry *	mGeos

bool	mOwnsGeom

int	nbPoints

PointSet *	parent

int	type

double *	x

double	xmax

double	xmin

double *	y

double	ymax

double	ymin

Friends
class	CostCalculator

class	FeaturePart

class	LabelPosition

class	Layer

class	PolygonCostCalculator

Detailed Description

Note: not available in Python bindings

Definition at line 64 of file pointset.h.

Constructor & Destructor Documentation

◆ PointSet() [1/4]

PointSet::PointSet ( )

Definition at line 40 of file pointset.cpp.

◆ PointSet() [2/4]

PointSet::PointSet	(	int	nbPoints,
		double *	x,
		double *	y
	)

Definition at line 58 of file pointset.cpp.

◆ ~PointSet()

PointSet::~PointSet ( )

virtual

Definition at line 215 of file pointset.cpp.

◆ PointSet() [3/4]

PointSet::PointSet	(	double	x,
		double	y
	)

protected

Definition at line 84 of file pointset.cpp.

◆ PointSet() [4/4]

PointSet::PointSet ( const PointSet & ps )

protected

Definition at line 106 of file pointset.cpp.

Member Function Documentation

◆ compute_chull_bbox()

CHullBox * PointSet::compute_chull_bbox ( )

Definition at line 572 of file pointset.cpp.

◆ containsLabelCandidate()

bool PointSet::containsLabelCandidate	(	double	x,
		double	y,
		double	width,
		double	height,
		double	alpha = `0`
	)		const

Tests whether a possible label candidate will fit completely within the shape.

Parameters

x	x-coordinate of label candidate
y	y-coordinate of label candidate
width	label width
height	label height
alpha	label angle

Returns: true if point set completely contains candidate label

Definition at line 290 of file pointset.cpp.

◆ containsPoint()

bool PointSet::containsPoint	(	double	x,
		double	y
	)		const

Tests whether point set contains a specified point.

Parameters

x	x-coordinate of point
y	y-coordinate of point

Returns: true if point set contains a specified point

Definition at line 268 of file pointset.cpp.

◆ createGeosGeom()

void PointSet::createGeosGeom ( ) const

protected

Definition at line 150 of file pointset.cpp.

◆ deleteCoords()

void PointSet::deleteCoords ( )

protected

Definition at line 232 of file pointset.cpp.

◆ extractShape()

PointSet * PointSet::extractShape	(	int	nbPtSh,
		int	imin,
		int	imax,
		int	fps,
		int	fpe,
		double	fptx,
		double	fpty
	)

Definition at line 240 of file pointset.cpp.

◆ geos()

const GEOSGeometry * PointSet::geos ( ) const

Returns the point set's GEOS geometry.

Definition at line 850 of file pointset.cpp.

◆ getBoundingBox()

void pal::PointSet::getBoundingBox	(	double	min[2],
		double	max[2]
	)		const

inline

Definition at line 118 of file pointset.h.

◆ getCentroid()

void PointSet::getCentroid	(	double &	px,
		double &	py,
		bool	forceInside = `false`
	)		const

Definition at line 769 of file pointset.cpp.

◆ getGeosType()

int pal::PointSet::getGeosType ( ) const

inline

Definition at line 116 of file pointset.h.

◆ getHoleOf()

PointSet* pal::PointSet::getHoleOf ( )

inline

Returns NULL if this isn't a hole.

Otherwise returns pointer to parent pointset.

Definition at line 127 of file pointset.h.

◆ getNumPoints()

int pal::PointSet::getNumPoints ( ) const

inline

Definition at line 129 of file pointset.h.

◆ getPointByDistance()

void PointSet::getPointByDistance	(	double *	d,
		double *	ad,
		double	dl,
		double *	px,
		double *	py
	)

Get a point a set distance along a line geometry.

Parameters

d	array of distances between points
ad	cumulative total distance from pt0 to each point (ad0 = pt0->pt0)
dl	distance to traverse along line
px	final x coord on line
py	final y coord on line

Definition at line 811 of file pointset.cpp.

◆ invalidateGeos()

void PointSet::invalidateGeos ( )

protected

Definition at line 204 of file pointset.cpp.

◆ length()

double PointSet::length ( ) const

Returns length of line geometry.

Definition at line 858 of file pointset.cpp.

◆ minDistanceToPoint()

double PointSet::minDistanceToPoint	(	double	px,
		double	py,
		double *	rx = `nullptr`,
		double *	ry = `nullptr`
	)		const

Returns the squared minimum distance between the point set geometry and the point (px,py) Optionally, the nearest point is stored in (rx,ry).

Parameters

px	x coordinate of the point
py	y coordinate of the points
rx	pointer to x coorinates of the nearest point (can be NULL)
ry	pointer to y coorinates of the nearest point (can be NULL)

Returns: minimum distance

Definition at line 720 of file pointset.cpp.

◆ preparedGeom()

const GEOSPreparedGeometry * PointSet::preparedGeom ( ) const

protected

Definition at line 192 of file pointset.cpp.

◆ splitPolygons()

void PointSet::splitPolygons	(	QLinkedList< PointSet *> &	shapes_toProcess,
		QLinkedList< PointSet *> &	shapes_final,
		double	xrm,
		double	yrm
	)

static

Split a concave shape into several convex shapes.

Definition at line 295 of file pointset.cpp.

Friends And Related Function Documentation

◆ CostCalculator

friend class CostCalculator

friend

Definition at line 68 of file pointset.h.

◆ FeaturePart

friend class FeaturePart

friend

Definition at line 66 of file pointset.h.

◆ LabelPosition

friend class LabelPosition

friend

Definition at line 67 of file pointset.h.

◆ Layer

friend class Layer

friend

Definition at line 70 of file pointset.h.

◆ PolygonCostCalculator

friend class PolygonCostCalculator

friend

Definition at line 69 of file pointset.h.

Member Data Documentation

◆ cHull

int* pal::PointSet::cHull

protected

Definition at line 156 of file pointset.h.

◆ cHullSize

int pal::PointSet::cHullSize

protected

Definition at line 157 of file pointset.h.

◆ holeOf

PointSet* pal::PointSet::holeOf

protected

Definition at line 161 of file pointset.h.

◆ mGeos

GEOSGeometry* pal::PointSet::mGeos

mutableprotected

Definition at line 149 of file pointset.h.

◆ mOwnsGeom

bool pal::PointSet::mOwnsGeom

mutableprotected

Definition at line 150 of file pointset.h.

◆ nbPoints

int pal::PointSet::nbPoints

protected

Definition at line 152 of file pointset.h.

◆ parent

PointSet* pal::PointSet::parent

protected

Definition at line 162 of file pointset.h.

◆ type

int pal::PointSet::type

protected

Definition at line 159 of file pointset.h.

◆ x

double* pal::PointSet::x

protected

Definition at line 153 of file pointset.h.

◆ xmax

double pal::PointSet::xmax

protected

Definition at line 174 of file pointset.h.

◆ xmin

double pal::PointSet::xmin

protected

Definition at line 173 of file pointset.h.

◆ y

double* pal::PointSet::y

protected

Definition at line 154 of file pointset.h.

◆ ymax

double pal::PointSet::ymax

protected

Definition at line 176 of file pointset.h.

◆ ymin

double pal::PointSet::ymin

protected

Definition at line 175 of file pointset.h.

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

/tmp/buildd/qgis-2.18.21+99unstable/src/core/pal/pointset.h
/tmp/buildd/qgis-2.18.21+99unstable/src/core/pal/pointset.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ PointSet() [1/4]

◆ PointSet() [2/4]

◆ ~PointSet()

◆ PointSet() [3/4]

◆ PointSet() [4/4]

Member Function Documentation

◆ compute_chull_bbox()

◆ containsLabelCandidate()

◆ containsPoint()

◆ createGeosGeom()

◆ deleteCoords()

◆ extractShape()

◆ geos()

◆ getBoundingBox()

◆ getCentroid()

◆ getGeosType()

◆ getHoleOf()

◆ getNumPoints()

◆ getPointByDistance()

◆ invalidateGeos()

◆ length()

◆ minDistanceToPoint()

◆ preparedGeom()

◆ splitPolygons()

Friends And Related Function Documentation

◆ CostCalculator

◆ FeaturePart

◆ LabelPosition

◆ Layer

◆ PolygonCostCalculator

Member Data Documentation

◆ cHull

◆ cHullSize

◆ holeOf

◆ mGeos

◆ mOwnsGeom

◆ nbPoints

◆ parent

◆ type

◆ x

◆ xmax

◆ xmin

◆ y

◆ ymax

◆ ymin