#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. Otherwise returns pointer to parent pointset. More...

int	getNumPoints () const

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

bool	isClosed () const
	Returns true if pointset is closed. 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 = nullptr

int	cHullSize

PointSet *	holeOf = nullptr

GEOSGeometry *	mGeos = nullptr

bool	mOwnsGeom = false

int	nbPoints

PointSet *	parent = nullptr

int	type

double *	x = nullptr

double	xmax = std::numeric_limits<double>::lowest()

double	xmin = std::numeric_limits<double>::max()

double *	y = nullptr

double	ymax = std::numeric_limits<double>::lowest()

double	ymin = std::numeric_limits<double>::max()

Friends
class	CostCalculator

class	FeaturePart

class	LabelPosition

class	Layer

class	PolygonCostCalculator

Detailed Description

Note: not available in Python bindings

Definition at line 68 of file pointset.h.

Constructor & Destructor Documentation

PointSet::PointSet ( )

Definition at line 40 of file pointset.cpp.

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

Definition at line 49 of file pointset.cpp.

PointSet::~PointSet ( )

virtual

Definition at line 190 of file pointset.cpp.

PointSet::PointSet	(	double	x,
		double	y
	)

protected

Definition at line 66 of file pointset.cpp.

PointSet::PointSet ( const PointSet & ps )

protected

Definition at line 85 of file pointset.cpp.

Member Function Documentation

CHullBox * PointSet::compute_chull_bbox ( )

Definition at line 545 of file pointset.cpp.

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 263 of file pointset.cpp.

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 242 of file pointset.cpp.

void PointSet::createGeosGeom ( ) const

protected

Definition at line 125 of file pointset.cpp.

void PointSet::deleteCoords ( )

protected

Definition at line 206 of file pointset.cpp.

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

Definition at line 214 of file pointset.cpp.

const GEOSGeometry * PointSet::geos ( ) const

Returns the point set's GEOS geometry.

Definition at line 818 of file pointset.cpp.

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

inline

Definition at line 126 of file pointset.h.

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

Definition at line 740 of file pointset.cpp.

int pal::PointSet::getGeosType ( ) const

inline

Definition at line 124 of file pointset.h.

PointSet* pal::PointSet::getHoleOf ( )

inline

Returns NULL if this isn't a hole. Otherwise returns pointer to parent pointset.

Definition at line 135 of file pointset.h.

int pal::PointSet::getNumPoints ( ) const

inline

Definition at line 137 of file pointset.h.

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

Gets 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 779 of file pointset.cpp.

void PointSet::invalidateGeos ( )

protected

Definition at line 179 of file pointset.cpp.

bool PointSet::isClosed ( ) const

Returns true if pointset is closed.

Definition at line 849 of file pointset.cpp.

double PointSet::length ( ) const

Returns length of line geometry.

Definition at line 826 of file pointset.cpp.

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 693 of file pointset.cpp.

const GEOSPreparedGeometry * PointSet::preparedGeom ( ) const

protected

Definition at line 167 of file pointset.cpp.

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 268 of file pointset.cpp.

Friends And Related Function Documentation

friend class CostCalculator

friend

Definition at line 72 of file pointset.h.

friend class FeaturePart

friend

Definition at line 70 of file pointset.h.

friend class LabelPosition

friend

Definition at line 71 of file pointset.h.

friend class Layer

friend

Definition at line 74 of file pointset.h.

friend class PolygonCostCalculator

friend

Definition at line 73 of file pointset.h.

Member Data Documentation

int* pal::PointSet::cHull = nullptr

protected

Definition at line 172 of file pointset.h.

int pal::PointSet::cHullSize

protected

Definition at line 173 of file pointset.h.

PointSet* pal::PointSet::holeOf = nullptr

protected

Definition at line 177 of file pointset.h.

GEOSGeometry* pal::PointSet::mGeos = nullptr

mutableprotected

Definition at line 165 of file pointset.h.

bool pal::PointSet::mOwnsGeom = false

mutableprotected

Definition at line 166 of file pointset.h.

int pal::PointSet::nbPoints

protected

Definition at line 168 of file pointset.h.

PointSet* pal::PointSet::parent = nullptr

protected

Definition at line 178 of file pointset.h.

int pal::PointSet::type

protected

Definition at line 175 of file pointset.h.

double* pal::PointSet::x = nullptr

protected

Definition at line 169 of file pointset.h.

double pal::PointSet::xmax = std::numeric_limits<double>::lowest()

protected

Definition at line 190 of file pointset.h.

double pal::PointSet::xmin = std::numeric_limits<double>::max()

protected

Definition at line 189 of file pointset.h.

double* pal::PointSet::y = nullptr

protected

Definition at line 170 of file pointset.h.

double pal::PointSet::ymax = std::numeric_limits<double>::lowest()

protected

Definition at line 192 of file pointset.h.

double pal::PointSet::ymin = std::numeric_limits<double>::max()

protected

Definition at line 191 of file pointset.h.

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

/build/qgis-3.4.15+24xenial/src/core/pal/pointset.h
/build/qgis-3.4.15+24xenial/src/core/pal/pointset.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation