Point Class Reference

A 2D floating-point point extending QPointF with movement and spatial query methods. More...

#include <point.h>

Inheritance diagram for Point:

Collaboration diagram for Point:

Classes
class	List
	A list of Point objects with corner-finding helpers. More...

Public Member Functions
	Point ()
	Default constructor — creates a point at the origin.
	Point (const QPointF &other)
	Construct from a QPointF.
	Point (const QPoint &other)
	Construct from a QPoint (integer coordinates).
	Point (double x, double y)
	Construct from explicit X and Y coordinates.
bool	isLeftOf (const QPointF &other) const
	Test whether this point is to the left of other (smaller X).
bool	isRightOf (const QPointF &other) const
	Test whether this point is to the right of other (larger X).
bool	isAbove (const QPointF &other) const
	Test whether this point is above other (smaller Y).
bool	isBelow (const QPointF &other) const
	Test whether this point is below other (larger Y).
Point &	move (Geo::Direction direction, double amount)
	Move this point in a cardinal direction by the given amount.
Point &	move (double bearing, double distance)
	Move this point by a bearing and distance.
Point &	moveDelta (double dx, double dy)
	Translate this point by a (dx, dy) delta.
Point &	round ()
	Round both coordinates to the nearest integer in place.
Point &	offset (double x, double y)
	Offset this point by the given (x, y) amounts.
Point	delta (const Point &other) const
	Compute the (dx, dy) vector from this point to another.
QString	toString () const
	Format this point as "x, y".

Static Public Member Functions
static Point	fromString (const QString &value)
	Parse a Point from a string produced by toString().

Detailed Description

A 2D floating-point point extending QPointF with movement and spatial query methods.

Extends QPointF with movement transforms, string conversion, and a list subclass.

Definition at line 15 of file point.h.

Constructor & Destructor Documentation

Point() [1/4]

Point::Point ( )

inline

Default constructor — creates a point at the origin.

Definition at line 19 of file point.h.

Point() [2/4]

Point::Point ( const QPointF &  other )

inline

Construct from a QPointF.

Parameters

other

Source QPointF

Definition at line 22 of file point.h.

Point() [3/4]

Point::Point ( const QPoint &  other )

inline

Construct from a QPoint (integer coordinates).

Parameters

other

Source QPoint

Definition at line 25 of file point.h.

Point() [4/4]

Point::Point ( double  x, double  y  )

inline

Construct from explicit X and Y coordinates.

Parameters

x	X coordinate
y	Y coordinate

Definition at line 31 of file point.h.

Member Function Documentation

delta()

Point Point::delta

(

const Point &

other

)

const

Compute the (dx, dy) vector from this point to another.

Parameters

other

Target point

Returns

Delta point representing the displacement

fromString()

static Point Point::fromString ( const QString &  value )

static

Parse a Point from a string produced by toString().

Parameters

value

String of the form "x, y"

Returns

Parsed Point

isAbove()

bool Point::isAbove ( const QPointF &  other ) const

inline

Test whether this point is above other (smaller Y).

Parameters

other

Reference point

Returns

true if this point's Y is less than other's Y

Definition at line 44 of file point.h.

isBelow()

bool Point::isBelow ( const QPointF &  other ) const

inline

Test whether this point is below other (larger Y).

Parameters

other

Reference point

Returns

true if this point's Y is greater than other's Y

Definition at line 48 of file point.h.

isLeftOf()

bool Point::isLeftOf ( const QPointF &  other ) const

inline

Test whether this point is to the left of other (smaller X).

Parameters

other

Reference point

Returns

true if this point's X is less than other's X

Definition at line 36 of file point.h.

isRightOf()

bool Point::isRightOf ( const QPointF &  other ) const

inline

Test whether this point is to the right of other (larger X).

Parameters

other

Reference point

Returns

true if this point's X is greater than other's X

Definition at line 40 of file point.h.

move() [1/2]

Point & Point::move	(	double	bearing,
		double	distance
	)

Move this point by a bearing and distance.

Parameters

bearing	Compass bearing in degrees
distance	Distance to move

Returns

Reference to this point

move() [2/2]

Point & Point::move	(	Geo::Direction	direction,
		double	amount
	)

Move this point in a cardinal direction by the given amount.

Parameters

direction	Cardinal direction to move
amount	Distance to move

Returns

Reference to this point

moveDelta()

Point & Point::moveDelta	(	double	dx,
		double	dy
	)

Translate this point by a (dx, dy) delta.

Parameters

dx	Horizontal displacement
dy	Vertical displacement

Returns

Reference to this point

offset()

Point & Point::offset	(	double	x,
		double	y
	)

Offset this point by the given (x, y) amounts.

Parameters

x	Horizontal offset
y	Vertical offset

Returns

Reference to this point

round()

Point & Point::round

(

)

Round both coordinates to the nearest integer in place.

Returns

Reference to this point

toString()

QString Point::toString ( ) const

inline

Format this point as "x, y".

Returns

String representation

Definition at line 97 of file point.h.

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

• include/Kanoop/geometry/point.h