A rectangle specified with double values. More...

#include <qgsrectangle.h>

Inheritance diagram for QgsRectangle:

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

	QgsRectangle (const QgsPointXY &p1, const QgsPointXY &p2, bool normalize=true)
	Construct a rectangle from two points.

	QgsRectangle (const QgsRectangle &other)

	QgsRectangle (const QRectF &qRectF)
	Construct a rectangle from a QRectF.

	QgsRectangle (double xMin, double yMin=0, double xMax=0, double yMax=0, bool normalize=true)
	Constructs a QgsRectangle from a set of x and y minimum and maximum coordinates.

	~QgsRectangle ()=default

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

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

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

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

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

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

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

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

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

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

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

bool	contains (double x, double y) const
	Returns `true` when rectangle contains the point at (x, y).

double	distance (const QgsPointXY &point) const
	Returns the distance from point to the nearest point on the boundary of the rectangle.

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

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

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

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

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

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

bool	isEmpty () const
	Returns `true` if the rectangle has no area.

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

bool	isNull () const
	Test if the rectangle is null (holding no spatial information).

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

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

bool	operator!= (const QgsRectangle &r1) const

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

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

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

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

QgsRectangle &	operator= (const QgsRectangle &r1)

bool	operator== (const QgsRectangle &r1) const

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

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

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

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

void	set (const QgsPointXY &p1, const QgsPointXY &p2, bool normalize=true)
	Sets the rectangle from two QgsPoints.

void	set (double xMin, double yMin, double xMax, double yMax, bool normalize=true)
	Sets the rectangle from four points.

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

void	setNull ()
	Mark a rectangle as being null (holding no spatial information).

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

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

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

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

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.

QgsBox3D	toBox3d (double zMin, double zMax) const
	Converts the rectangle to a 3D box, with the specified zMin and zMax z values.

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

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

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

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

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

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

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

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

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

Properties
double	area

QgsPointXY	center

double	height

bool	isEmpty

bool	isNull

double	perimeter

double	width

double	xMaximum

double	xMinimum

double	yMaximum

double	yMinimum

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`,
		bool	normalize = `true`
	)

inlineexplicit

Constructs a QgsRectangle from a set of x and y minimum and maximum coordinates.

The rectangle will be normalized after creation. Since QGIS 3.20, if normalize is false then the normalization step will not be applied automatically.

Definition at line 68 of file qgsrectangle.h.

◆ QgsRectangle() [3/5]

QgsRectangle::QgsRectangle	(	const QgsPointXY &	p1,
		const QgsPointXY &	p2,
		bool	normalize = `true`
	)

inline

Construct a rectangle from two points.

The rectangle is normalized after construction. Since QGIS 3.20, if normalize is false then the normalization step will not be applied automatically.

Definition at line 84 of file qgsrectangle.h.

◆ QgsRectangle() [4/5]

QgsRectangle::QgsRectangle ( const QRectF & qRectF )

inline

Construct a rectangle from a QRectF.

The rectangle is NOT normalized after construction.

Definition at line 94 of file qgsrectangle.h.

◆ QgsRectangle() [5/5]

QgsRectangle::QgsRectangle ( const QgsRectangle & other )

inline

Definition at line 102 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()

Definition at line 264 of file qgsrectangle.h.

◆ asPolygon()

QString QgsRectangle::asPolygon ( ) const

Returns the rectangle as a polygon.

Definition at line 164 of file qgsrectangle.cpp.

◆ asWktCoordinates()

QString QgsRectangle::asWktCoordinates ( ) const

Returns a string representation of the rectangle in WKT format.

Definition at line 110 of file qgsrectangle.cpp.

◆ asWktPolygon()

QString QgsRectangle::asWktPolygon ( ) const

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

Definition at line 119 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()

Definition at line 358 of file qgsrectangle.h.

◆ center()

QgsPointXY QgsRectangle::center ( ) const

inline

Returns the center point of the rectangle.

Definition at line 275 of file qgsrectangle.h.

◆ combineExtentWith() [1/3]

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 465 of file qgsrectangle.h.

◆ combineExtentWith() [2/3]

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 431 of file qgsrectangle.h.

◆ combineExtentWith() [3/3]

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 447 of file qgsrectangle.h.

◆ contains() [1/3]

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

inline

Returns true when rectangle contains a point.

Definition at line 411 of file qgsrectangle.h.

◆ contains() [2/3]

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

inline

Returns true when rectangle contains other rectangle.

Definition at line 403 of file qgsrectangle.h.

◆ contains() [3/3]

bool QgsRectangle::contains	(	double	x,
		double	y
	)		const

inline

Returns true when rectangle contains the point at (x, y).

Since: QGIS 3.20

Definition at line 422 of file qgsrectangle.h.

◆ distance()

double QgsRectangle::distance ( const QgsPointXY & point ) const

inline

Returns the distance from point to the nearest point on the boundary of the rectangle.

Since: QGIS 3.14

Definition at line 474 of file qgsrectangle.h.

◆ fromCenterAndSize()

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

static

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

Definition at line 58 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.

Definition at line 35 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 320 of file qgsrectangle.h.

◆ height()

double QgsRectangle::height ( ) const

inline

Returns the height of the rectangle.

See also: width(); area()

Definition at line 256 of file qgsrectangle.h.

◆ include()

void QgsRectangle::include ( const QgsPointXY & p )

inline

Updates the rectangle to include the specified point.

Definition at line 333 of file qgsrectangle.h.

◆ intersect()

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

inline

Returns the intersection with the given rectangle.

Definition at line 368 of file qgsrectangle.h.

◆ intersects()

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

inline

Returns true when rectangle intersects with other rectangle.

Definition at line 384 of file qgsrectangle.h.

◆ invert()

void QgsRectangle::invert ( )

inline

Swap x/y coordinates in the rectangle.

Definition at line 610 of file qgsrectangle.h.

◆ isEmpty()

bool QgsRectangle::isEmpty ( ) const

inline

Returns true if the rectangle has no area.

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

See also: isNull()

Definition at line 510 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 594 of file qgsrectangle.h.

◆ isNull()

bool QgsRectangle::isNull ( ) const

inline

Test if the rectangle is null (holding no spatial information).

A null rectangle is also an empty rectangle.

See also: setNull()

Definition at line 523 of file qgsrectangle.h.

◆ normalize()

void QgsRectangle::normalize ( )

inline

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

Definition at line 229 of file qgsrectangle.h.

◆ operator QVariant()

QgsRectangle::operator QVariant ( ) const

inline

Allows direct construction of QVariants from rectangles.

Definition at line 623 of file qgsrectangle.h.

◆ operator!=()

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

inline

Definition at line 572 of file qgsrectangle.h.

◆ operator+()

QgsRectangle QgsRectangle::operator+ ( QgsVector v ) const

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

Definition at line 83 of file qgsrectangle.cpp.

◆ operator+=()

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

Moves this rectangle in the direction of the vector.

Definition at line 101 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.

Definition at line 74 of file qgsrectangle.cpp.

◆ operator-=()

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

Moves this rectangle in the direction of the reversed vector.

Definition at line 92 of file qgsrectangle.cpp.

◆ operator=()

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

inline

Definition at line 577 of file qgsrectangle.h.

◆ operator==()

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

inline

Definition at line 562 of file qgsrectangle.h.

◆ perimeter()

double QgsRectangle::perimeter ( ) const

inline

Returns the perimeter of the rectangle.

See also: area()

Definition at line 270 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 280 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 300 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 67 of file qgsrectangle.cpp.

◆ set() [1/2]

void QgsRectangle::set	(	const QgsPointXY &	p1,
		const QgsPointXY &	p2,
		bool	normalize = `true`
	)

inline

Sets the rectangle from two QgsPoints.

The rectangle is normalised after construction. Since QGIS 3.20, if normalize is false then the normalization step will not be applied automatically.

Definition at line 133 of file qgsrectangle.h.

◆ set() [2/2]

void QgsRectangle::set	(	double	xMin,
		double	yMin,
		double	xMax,
		double	yMax,
		bool	normalize = `true`
	)

inline

Sets the rectangle from four points.

The rectangle is normalised after construction. Since QGIS 3.20, if normalize is false then the normalization step will not be applied automatically.

Definition at line 149 of file qgsrectangle.h.

◆ setMinimal()

Q_DECL_DEPRECATED void QgsRectangle::setMinimal ( )

inline

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

It is NOT normalized.

Deprecated:: QGIS 3.34. Will be removed in QGIS 4.0. Use setNull().

Definition at line 201 of file qgsrectangle.h.

◆ setNull()

void QgsRectangle::setNull ( )

inline

Mark a rectangle as being null (holding no spatial information).

A null rectangle is also empty by definition.

See also: isNull(); isEmpty()

Since: QGIS 3.34

Definition at line 189 of file qgsrectangle.h.

◆ setXMaximum()

void QgsRectangle::setXMaximum ( double x )

inline

Set the maximum x value.

Definition at line 167 of file qgsrectangle.h.

◆ setXMinimum()

void QgsRectangle::setXMinimum ( double x )

inline

Set the minimum x value.

Definition at line 162 of file qgsrectangle.h.

◆ setYMaximum()

void QgsRectangle::setYMaximum ( double y )

inline

Set the maximum y value.

Definition at line 177 of file qgsrectangle.h.

◆ setYMinimum()

void QgsRectangle::setYMinimum ( double y )

inline

Set the minimum y value.

Definition at line 172 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 195 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.

Definition at line 190 of file qgsrectangle.cpp.

◆ toRectF()

QRectF QgsRectangle::toRectF ( ) const

inline

Returns a QRectF with same coordinates as the rectangle.

Definition at line 545 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 134 of file qgsrectangle.cpp.

◆ width()

double QgsRectangle::width ( ) const

inline

Returns the width of the rectangle.

See also: height(); area()

Definition at line 249 of file qgsrectangle.h.

◆ xMaximum()

double QgsRectangle::xMaximum ( ) const

inline

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

Definition at line 209 of file qgsrectangle.h.

◆ xMinimum()

double QgsRectangle::xMinimum ( ) const

inline

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

Definition at line 214 of file qgsrectangle.h.

◆ yMaximum()

double QgsRectangle::yMaximum ( ) const

inline

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

Definition at line 219 of file qgsrectangle.h.

◆ yMinimum()

double QgsRectangle::yMinimum ( ) const

inline

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

Definition at line 224 of file qgsrectangle.h.

Property Documentation

◆ area

double QgsRectangle::area

read

Definition at line 51 of file qgsrectangle.h.

◆ center

QgsPointXY QgsRectangle::center

read

Definition at line 53 of file qgsrectangle.h.

◆ height

double QgsRectangle::height

read

Definition at line 50 of file qgsrectangle.h.

◆ isEmpty

bool QgsRectangle::isEmpty

read

Definition at line 54 of file qgsrectangle.h.

◆ isNull

bool QgsRectangle::isNull

read

Definition at line 55 of file qgsrectangle.h.

◆ perimeter

double QgsRectangle::perimeter

read

Definition at line 52 of file qgsrectangle.h.

◆ width

double QgsRectangle::width

read

Definition at line 49 of file qgsrectangle.h.

◆ xMaximum

double QgsRectangle::xMaximum

readwrite

Definition at line 46 of file qgsrectangle.h.

◆ xMinimum

double QgsRectangle::xMinimum

readwrite

Definition at line 45 of file qgsrectangle.h.

◆ yMaximum

double QgsRectangle::yMaximum

readwrite

Definition at line 48 of file qgsrectangle.h.

◆ yMinimum

double QgsRectangle::yMinimum

readwrite

Definition at line 47 of file qgsrectangle.h.

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

/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/core/geometry/qgsrectangle.h
/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/core/geometry/qgsrectangle.cpp

Public Member Functions

Static Public Member Functions

Properties

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() [1/3]

◆ contains() [2/3]

◆ contains() [3/3]

◆ distance()

◆ 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()

◆ setNull()

◆ setXMaximum()

◆ setXMinimum()

◆ setYMaximum()

◆ setYMinimum()

◆ snappedToGrid()

◆ toBox3d()

◆ toRectF()

◆ toString()

◆ width()

◆ xMaximum()

◆ xMinimum()

◆ yMaximum()

◆ yMinimum()

Property Documentation

◆ area

◆ center

◆ height

◆ isEmpty

◆ isNull

◆ perimeter

◆ width

◆ xMaximum

◆ xMinimum

◆ yMaximum

◆ yMinimum