A rectangle specified with double values. More...

#include <qgsrectangle.h>

Inheritance diagram for QgsRectangle:

Public Member Functions
	QgsRectangle ()=default
	Constructor for a null rectangle. More...

	QgsRectangle (double xMin, double yMin=0, double xMax=0, double yMax=0)
	Constructor. More...

	QgsRectangle (const QgsPointXY &p1, const QgsPointXY &p2)
	Construct a rectangle from two points. The rectangle is normalized after construction. More...

	QgsRectangle (const QRectF &qRectF)
	Construct a rectangle from a QRectF. The rectangle is normalized after construction. More...

	QgsRectangle (const QgsRectangle &other)
	Copy constructor. More...

	~QgsRectangle ()=default

double	area () const
	Returns the area of the rectangle. More...

QString	asPolygon () const
	Returns the rectangle as a polygon. More...

QString	asWktCoordinates () const
	Returns a string representation of the rectangle in WKT format. More...

QString	asWktPolygon () const
	Returns a string representation of the rectangle as a WKT Polygon. More...

QgsRectangle	buffered (double width) const
	Gets rectangle enlarged by buffer. More...

QgsPointXY	center () const
	Returns the center point of the rectangle. More...

void	combineExtentWith (const QgsRectangle &rect)
	Expands the rectangle so that it covers both the original rectangle and the given rectangle. More...

void	combineExtentWith (double x, double y)
	Expands the rectangle so that it covers both the original rectangle and the given point. More...

void	combineExtentWith (const QgsPointXY &point)
	Expands the rectangle so that it covers both the original rectangle and the given point. More...

bool	contains (const QgsRectangle &rect) const
	Returns `true` when rectangle contains other rectangle. More...

bool	contains (const QgsPointXY &p) const
	Returns `true` when rectangle contains a point. More...

void	grow (double delta)
	Grows the rectangle in place by the specified amount. More...

double	height () const
	Returns the height of the rectangle. More...

void	include (const QgsPointXY &p)
	Updates the rectangle to include the specified point. More...

QgsRectangle	intersect (const QgsRectangle &rect) const
	Returns the intersection with the given rectangle. More...

bool	intersects (const QgsRectangle &rect) const
	Returns `true` when rectangle intersects with other rectangle. More...

void	invert ()
	Swap x/y coordinates in the rectangle. More...

bool	isEmpty () const
	Returns `true` if the rectangle is empty. More...

bool	isFinite () const
	Returns `true` if the rectangle has finite boundaries. More...

bool	isNull () const
	Test if the rectangle is null (all coordinates zero or after call to setMinimal()). More...

void	normalize ()
	Normalize the rectangle so it has non-negative width/height. More...

	operator QVariant () const
	Allows direct construction of QVariants from rectangles. More...

bool	operator!= (const QgsRectangle &r1) const
	Comparison operator. More...

QgsRectangle	operator+ (QgsVector v) const
	Returns a rectangle offset from this one in the direction of the vector. More...

QgsRectangle &	operator+= (QgsVector v)
	Moves this rectangle in the direction of the vector. More...

QgsRectangle	operator- (QgsVector v) const
	Returns a rectangle offset from this one in the direction of the reversed vector. More...

QgsRectangle &	operator-= (QgsVector v)
	Moves this rectangle in the direction of the reversed vector. More...

QgsRectangle &	operator= (const QgsRectangle &r1)
	Assignment operator. More...

bool	operator== (const QgsRectangle &r1) const
	Comparison operator. More...

double	perimeter () const
	Returns the perimeter of the rectangle. More...

void	scale (double scaleFactor, const QgsPointXY *c=nullptr)
	Scale the rectangle around its center point. More...

void	scale (double scaleFactor, double centerX, double centerY)
	Scale the rectangle around its center point. More...

QgsRectangle	scaled (double scaleFactor, const QgsPointXY *center=nullptr) const
	Scale the rectangle around its center point. More...

void	set (const QgsPointXY &p1, const QgsPointXY &p2)
	Sets the rectangle from two QgsPoints. More...

void	set (double xMin, double yMin, double xMax, double yMax)
	Sets the rectangle from four points. More...

void	setMinimal ()
	Set a rectangle so that min corner is at max and max corner is at min. More...

void	setXMaximum (double x)
	Set the maximum x value. More...

void	setXMinimum (double x)
	Set the minimum x value. More...

void	setYMaximum (double y)
	Set the maximum y value. More...

void	setYMinimum (double y)
	Set the minimum y value. More...

QgsRectangle	snappedToGrid (double spacing) const
	Returns a copy of this rectangle that is snapped to a grid with the specified spacing between the grid lines. More...

QgsBox3d	toBox3d (double zMin, double zMax) const
	Converts the rectangle to a 3D box, with the specified zMin and zMax z values. More...

QRectF	toRectF () const
	Returns a QRectF with same coordinates as the rectangle. More...

QString	toString (int precision=16) const
	Returns a string representation of form xmin,ymin : xmax,ymax Coordinates will be truncated to the specified precision. More...

double	width () const
	Returns the width of the rectangle. More...

double	xMaximum () const
	Returns the x maximum value (right side of rectangle). More...

double	xMinimum () const
	Returns the x minimum value (left side of rectangle). More...

double	yMaximum () const
	Returns the y maximum value (top side of rectangle). More...

double	yMinimum () const
	Returns the y minimum value (bottom side of rectangle). More...

Static Public Member Functions
static QgsRectangle	fromCenterAndSize (QgsPointXY center, double width, double height)
	Creates a new rectangle, given the specified center point and width and height. More...

static QgsRectangle	fromWkt (const QString &wkt)
	Creates a new rectangle from a wkt string. More...

Detailed Description

A rectangle specified with double values.

QgsRectangle is used to store a rectangle when double values are required. Examples are storing a layer extent or the current view extent of a map

See also: QgsBox3d

Definition at line 41 of file qgsrectangle.h.

Constructor & Destructor Documentation

◆ QgsRectangle() [1/5]

QgsRectangle::QgsRectangle ( )

default

Constructor for a null rectangle.

◆ QgsRectangle() [2/5]

QgsRectangle::QgsRectangle	(	double	xMin,
		double	yMin = `0`,
		double	xMax = `0`,
		double	yMax = `0`
	)

inlineexplicit

Constructor.

Definition at line 49 of file qgsrectangle.h.

◆ QgsRectangle() [3/5]

QgsRectangle::QgsRectangle	(	const QgsPointXY &	p1,
		const QgsPointXY &	p2
	)

inline

Construct a rectangle from two points. The rectangle is normalized after construction.

Definition at line 59 of file qgsrectangle.h.

◆ QgsRectangle() [4/5]

QgsRectangle::QgsRectangle ( const QRectF & qRectF )

inline

Construct a rectangle from a QRectF. The rectangle is normalized after construction.

Definition at line 65 of file qgsrectangle.h.

◆ QgsRectangle() [5/5]

QgsRectangle::QgsRectangle ( const QgsRectangle & other )

inline

Copy constructor.

Definition at line 74 of file qgsrectangle.h.

◆ ~QgsRectangle()

QgsRectangle::~QgsRectangle ( )

default

Member Function Documentation

◆ area()

double QgsRectangle::area ( ) const

inline

Returns the area of the rectangle.

See also: width(); height(); perimeter()

Since: QGIS 3.0

Definition at line 218 of file qgsrectangle.h.

◆ asPolygon()

QString QgsRectangle::asPolygon ( ) const

Returns the rectangle as a polygon.

Definition at line 157 of file qgsrectangle.cpp.

◆ asWktCoordinates()

QString QgsRectangle::asWktCoordinates ( ) const

Returns a string representation of the rectangle in WKT format.

Definition at line 104 of file qgsrectangle.cpp.

◆ asWktPolygon()

QString QgsRectangle::asWktPolygon ( ) const

Returns a string representation of the rectangle as a WKT Polygon.

Definition at line 113 of file qgsrectangle.cpp.

◆ buffered()

QgsRectangle QgsRectangle::buffered ( double width ) const

inline

Gets rectangle enlarged by buffer.

Note: In earlier QGIS releases this method was named buffer().

See also: grow()

Since: QGIS 3.0

Definition at line 304 of file qgsrectangle.h.

◆ center()

QgsPointXY QgsRectangle::center ( ) const

inline

Returns the center point of the rectangle.

Definition at line 230 of file qgsrectangle.h.

◆ combineExtentWith() [1/3]

void QgsRectangle::combineExtentWith ( const QgsRectangle & rect )

inline

Expands the rectangle so that it covers both the original rectangle and the given rectangle.

Definition at line 359 of file qgsrectangle.h.

◆ combineExtentWith() [2/3]

void QgsRectangle::combineExtentWith	(	double	x,
		double	y
	)

inline

Expands the rectangle so that it covers both the original rectangle and the given point.

Definition at line 375 of file qgsrectangle.h.

◆ combineExtentWith() [3/3]

void QgsRectangle::combineExtentWith ( const QgsPointXY & point )

inline

Expands the rectangle so that it covers both the original rectangle and the given point.

Since: QGIS 3.2

Definition at line 393 of file qgsrectangle.h.

◆ contains() [1/2]

bool QgsRectangle::contains ( const QgsRectangle & rect ) const

inline

Returns true when rectangle contains other rectangle.

Definition at line 342 of file qgsrectangle.h.

◆ contains() [2/2]

bool QgsRectangle::contains ( const QgsPointXY & p ) const

inline

Returns true when rectangle contains a point.

Definition at line 350 of file qgsrectangle.h.

◆ fromCenterAndSize()

QgsRectangle QgsRectangle::fromCenterAndSize	(	QgsPointXY	center,
		double	width,
		double	height
	)

static

Creates a new rectangle, given the specified center point and width and height.

Since: QGIS 3.0

Definition at line 52 of file qgsrectangle.cpp.

◆ fromWkt()

QgsRectangle QgsRectangle::fromWkt ( const QString & wkt )

static

Creates a new rectangle from a wkt string.

The WKT must contain only 5 vertices, representing a rectangle aligned with X and Y axes.

Since: QGIS 3.0

Definition at line 34 of file qgsrectangle.cpp.

◆ grow()

void QgsRectangle::grow ( double delta )

inline

Grows the rectangle in place by the specified amount.

See also: buffered()

Definition at line 275 of file qgsrectangle.h.

◆ height()

double QgsRectangle::height ( ) const

inline

Returns the height of the rectangle.

See also: width(); area()

Definition at line 209 of file qgsrectangle.h.

◆ include()

void QgsRectangle::include ( const QgsPointXY & p )

inline

Updates the rectangle to include the specified point.

Definition at line 286 of file qgsrectangle.h.

◆ intersect()

QgsRectangle QgsRectangle::intersect ( const QgsRectangle & rect ) const

inline

Returns the intersection with the given rectangle.

Definition at line 312 of file qgsrectangle.h.

◆ intersects()

bool QgsRectangle::intersects ( const QgsRectangle & rect ) const

inline

Returns true when rectangle intersects with other rectangle.

Definition at line 328 of file qgsrectangle.h.

◆ invert()

void QgsRectangle::invert ( )

inline

Swap x/y coordinates in the rectangle.

Definition at line 532 of file qgsrectangle.h.

◆ isEmpty()

bool QgsRectangle::isEmpty ( ) const

inline

Returns true if the rectangle is empty.

An empty rectangle may still be non-null if it contains valid information (e.g. bounding box of a point).

Definition at line 426 of file qgsrectangle.h.

◆ isFinite()

bool QgsRectangle::isFinite ( ) const

inline

Returns true if the rectangle has finite boundaries.

Will return false if any of the rectangle boundaries are NaN or Inf.

Definition at line 516 of file qgsrectangle.h.

◆ isNull()

bool QgsRectangle::isNull ( ) const

inline

Test if the rectangle is null (all coordinates zero or after call to setMinimal()).

A null rectangle is also an empty rectangle.

Since: QGIS 2.4

Definition at line 436 of file qgsrectangle.h.

◆ normalize()

void QgsRectangle::normalize ( )

inline

Normalize the rectangle so it has non-negative width/height.

Definition at line 182 of file qgsrectangle.h.

◆ operator QVariant()

QgsRectangle::operator QVariant ( ) const

inline

Allows direct construction of QVariants from rectangles.

Definition at line 546 of file qgsrectangle.h.

◆ operator!=()

bool QgsRectangle::operator!= ( const QgsRectangle & r1 ) const

inline

Comparison operator.

Returns: false if rectangles are equal

Definition at line 490 of file qgsrectangle.h.

◆ operator+()

QgsRectangle QgsRectangle::operator+ ( QgsVector v ) const

Returns a rectangle offset from this one in the direction of the vector.

Since: QGIS 3.0

Definition at line 77 of file qgsrectangle.cpp.

◆ operator+=()

QgsRectangle & QgsRectangle::operator+= ( QgsVector v )

Moves this rectangle in the direction of the vector.

Since: QGIS 3.0

Definition at line 95 of file qgsrectangle.cpp.

◆ operator-()

QgsRectangle QgsRectangle::operator- ( QgsVector v ) const

Returns a rectangle offset from this one in the direction of the reversed vector.

Since: QGIS 3.0

Definition at line 68 of file qgsrectangle.cpp.

◆ operator-=()

QgsRectangle & QgsRectangle::operator-= ( QgsVector v )

Moves this rectangle in the direction of the reversed vector.

Since: QGIS 3.0

Definition at line 86 of file qgsrectangle.cpp.

◆ operator=()

QgsRectangle& QgsRectangle::operator= ( const QgsRectangle & r1 )

inline

Assignment operator.

Parameters

r1	QgsRectangle to assign from

Definition at line 499 of file qgsrectangle.h.

◆ operator==()

bool QgsRectangle::operator== ( const QgsRectangle & r1 ) const

inline

Comparison operator.

Returns: true if rectangles are equal

Definition at line 478 of file qgsrectangle.h.

◆ perimeter()

double QgsRectangle::perimeter ( ) const

inline

Returns the perimeter of the rectangle.

See also: area()

Since: QGIS 3.0

Definition at line 225 of file qgsrectangle.h.

◆ scale() [1/2]

void QgsRectangle::scale	(	double	scaleFactor,
		const QgsPointXY *	c = `nullptr`
	)

inline

Scale the rectangle around its center point.

Definition at line 235 of file qgsrectangle.h.

◆ scale() [2/2]

void QgsRectangle::scale	(	double	scaleFactor,
		double	centerX,
		double	centerY
	)

inline

Scale the rectangle around its center point.

Definition at line 255 of file qgsrectangle.h.

◆ scaled()

QgsRectangle QgsRectangle::scaled	(	double	scaleFactor,
		const QgsPointXY *	center = `nullptr`
	)		const

Scale the rectangle around its center point.

Since: QGIS 3.4

Definition at line 61 of file qgsrectangle.cpp.

◆ set() [1/2]

void QgsRectangle::set	(	const QgsPointXY &	p1,
		const QgsPointXY &	p2
	)

inline

Sets the rectangle from two QgsPoints.

The rectangle is normalised after construction.

Definition at line 105 of file qgsrectangle.h.

◆ set() [2/2]

void QgsRectangle::set	(	double	xMin,
		double	yMin,
		double	xMax,
		double	yMax
	)

inline

Sets the rectangle from four points.

The rectangle is normalised after construction.

Definition at line 118 of file qgsrectangle.h.

◆ setMinimal()

void QgsRectangle::setMinimal ( )

inline

Set a rectangle so that min corner is at max and max corner is at min.

It is NOT normalized.

Definition at line 151 of file qgsrectangle.h.

◆ setXMaximum()

void QgsRectangle::setXMaximum ( double x )

inline

Set the maximum x value.

Definition at line 135 of file qgsrectangle.h.

◆ setXMinimum()

void QgsRectangle::setXMinimum ( double x )

inline

Set the minimum x value.

Definition at line 130 of file qgsrectangle.h.

◆ setYMaximum()

void QgsRectangle::setYMaximum ( double y )

inline

Set the maximum y value.

Definition at line 145 of file qgsrectangle.h.

◆ setYMinimum()

void QgsRectangle::setYMinimum ( double y )

inline

Set the minimum y value.

Definition at line 140 of file qgsrectangle.h.

◆ snappedToGrid()

QgsRectangle QgsRectangle::snappedToGrid ( double spacing ) const

Returns a copy of this rectangle that is snapped to a grid with the specified spacing between the grid lines.

Since: QGIS 3.4

Definition at line 185 of file qgsrectangle.cpp.

◆ toBox3d()

QgsBox3d QgsRectangle::toBox3d	(	double	zMin,
		double	zMax
	)		const

Converts the rectangle to a 3D box, with the specified zMin and zMax z values.

Since: QGIS 3.0

Definition at line 180 of file qgsrectangle.cpp.

◆ toRectF()

QRectF QgsRectangle::toRectF ( ) const

inline

Returns a QRectF with same coordinates as the rectangle.

Definition at line 457 of file qgsrectangle.h.

◆ toString()

QString QgsRectangle::toString ( int precision = 16 ) const

Returns a string representation of form xmin,ymin : xmax,ymax Coordinates will be truncated to the specified precision.

If the specified precision is less than 0, a suitable minimum precision is used.

Definition at line 127 of file qgsrectangle.cpp.

◆ width()

double QgsRectangle::width ( ) const

inline

Returns the width of the rectangle.

See also: height(); area()

Definition at line 202 of file qgsrectangle.h.

◆ xMaximum()

double QgsRectangle::xMaximum ( ) const

inline

Returns the x maximum value (right side of rectangle).

Definition at line 162 of file qgsrectangle.h.

◆ xMinimum()

double QgsRectangle::xMinimum ( ) const

inline

Returns the x minimum value (left side of rectangle).

Definition at line 167 of file qgsrectangle.h.

◆ yMaximum()

double QgsRectangle::yMaximum ( ) const

inline

Returns the y maximum value (top side of rectangle).

Definition at line 172 of file qgsrectangle.h.

◆ yMinimum()

double QgsRectangle::yMinimum ( ) const

inline

Returns the y minimum value (bottom side of rectangle).

Definition at line 177 of file qgsrectangle.h.

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

/tmp/buildd/qgis-3.8.0+99unstable/src/core/geometry/qgsrectangle.h
/tmp/buildd/qgis-3.8.0+99unstable/src/core/geometry/qgsrectangle.cpp

Public Member Functions

Static Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ QgsRectangle() [1/5]

◆ QgsRectangle() [2/5]

◆ QgsRectangle() [3/5]

◆ QgsRectangle() [4/5]

◆ QgsRectangle() [5/5]

◆ ~QgsRectangle()

Member Function Documentation

◆ area()

◆ asPolygon()

◆ asWktCoordinates()

◆ asWktPolygon()

◆ buffered()

◆ center()

◆ combineExtentWith() [1/3]

◆ combineExtentWith() [2/3]

◆ combineExtentWith() [3/3]

◆ contains() [1/2]

◆ contains() [2/2]

◆ fromCenterAndSize()

◆ fromWkt()

◆ grow()

◆ height()

◆ include()

◆ intersect()

◆ intersects()

◆ invert()

◆ isEmpty()

◆ isFinite()

◆ isNull()

◆ normalize()

◆ operator QVariant()

◆ operator!=()

◆ operator+()

◆ operator+=()

◆ operator-()

◆ operator-=()

◆ operator=()

◆ operator==()

◆ perimeter()

◆ scale() [1/2]

◆ scale() [2/2]

◆ scaled()

◆ set() [1/2]

◆ set() [2/2]

◆ setMinimal()

◆ setXMaximum()

◆ setXMinimum()

◆ setYMaximum()

◆ setYMinimum()

◆ snappedToGrid()

◆ toBox3d()

◆ toRectF()

◆ toString()

◆ width()

◆ xMaximum()

◆ xMinimum()

◆ yMaximum()

◆ yMinimum()