Represents two doubles as a mathematical 2D vector. Więcej...

#include <qcustomplot.hh>

Metody publiczne
	QCPVector2D ()

	QCPVector2D (double x, double y)

	QCPVector2D (const QPoint &point)

	QCPVector2D (const QPointF &point)

double	x () const

double	y () const

double &	rx ()

double &	ry ()

void	setX (double x)

void	setY (double y)

double	length () const

double	lengthSquared () const

QPoint	toPoint () const

QPointF	toPointF () const

bool	isNull () const

void	normalize ()

QCPVector2D	normalized () const

QCPVector2D	perpendicular () const

double	dot (const QCPVector2D &vec) const

double	distanceSquaredToLine (const QCPVector2D &start, const QCPVector2D &end) const

double	distanceSquaredToLine (const QLineF &line) const

double	distanceToStraightLine (const QCPVector2D &base, const QCPVector2D &direction) const

QCPVector2D &	operator*= (double factor)

QCPVector2D &	operator/= (double divisor)

QCPVector2D &	operator+= (const QCPVector2D &vector)

QCPVector2D &	operator-= (const QCPVector2D &vector)

Atrybuty prywatne
double	mX

double	mY

Przyjaciele
const QCPVector2D	operator* (double factor, const QCPVector2D &vec)

const QCPVector2D	operator* (const QCPVector2D &vec, double factor)

const QCPVector2D	operator/ (const QCPVector2D &vec, double divisor)

const QCPVector2D	operator+ (const QCPVector2D &vec1, const QCPVector2D &vec2)

const QCPVector2D	operator- (const QCPVector2D &vec1, const QCPVector2D &vec2)

const QCPVector2D	operator- (const QCPVector2D &vec)

Funkcje powiązane
(Zauważ, że to nie są metody klas.)
QDebug	operator<< (QDebug d, const QCPVector2D &vec)

Opis szczegółowy

This class acts as a replacement for QVector2D with the advantage of double precision instead of single, and some convenience methods tailored for the QCustomPlot library.

Dokumentacja konstruktora i destruktora

QCPVector2D::QCPVector2D ( )

Creates a QCPVector2D object and initializes the x and y coordinates to 0.

QCPVector2D::QCPVector2D	(	double	x,
		double	y
	)

Creates a QCPVector2D object and initializes the x and y coordinates with the specified values.

QCPVector2D::QCPVector2D ( const QPoint & point )

Creates a QCPVector2D object and initializes the x and y coordinates respective coordinates of the specified point.

QCPVector2D::QCPVector2D ( const QPointF & point )

Creates a QCPVector2D object and initializes the x and y coordinates respective coordinates of the specified point.

Dokumentacja funkcji składowych

double QCPVector2D::distanceSquaredToLine	(	const QCPVector2D &	start,
		const QCPVector2D &	end
	)		const

To jest metoda przeciążona, udostępniona dla wygody. Różni się od powyższej metody tylko zestawem akceptowanych argumentów.

Returns the squared shortest distance of this vector (interpreted as a point) to the finite line segment given by start and end.

Zobacz również: distanceToStraightLine

double QCPVector2D::distanceSquaredToLine ( const QLineF & line ) const

To jest metoda przeciążona, udostępniona dla wygody. Różni się od powyższej metody tylko zestawem akceptowanych argumentów.

Returns the squared shortest distance of this vector (interpreted as a point) to the finite line segment given by line.

Zobacz również: distanceToStraightLine

double QCPVector2D::distanceToStraightLine	(	const QCPVector2D &	base,
		const QCPVector2D &	direction
	)		const

Returns the shortest distance of this vector (interpreted as a point) to the infinite straight line given by a base point and a direction vector.

Zobacz również: distanceSquaredToLine

double QCPVector2D::dot ( const QCPVector2D & vec ) const

inline

Returns the dot/scalar product of this vector with the specified vector vec.

bool QCPVector2D::isNull ( ) const

inline

Returns whether this vector is null. A vector is null if qIsNull returns true for both x and y coordinates, i.e. if both are binary equal to 0.

double QCPVector2D::length ( ) const

inline

Returns the length of this vector.

Zobacz również: lengthSquared

double QCPVector2D::lengthSquared ( ) const

inline

Returns the squared length of this vector. In some situations, e.g. when just trying to find the shortest vector of a group, this is faster than calculating length, because it avoids calculation of a square root.

Zobacz również: length

void QCPVector2D::normalize ( )

Normalizes this vector. After this operation, the length of the vector is equal to 1.

Zobacz również: normalized, length, lengthSquared

QCPVector2D QCPVector2D::normalized ( ) const

Returns a normalized version of this vector. The length of the returned vector is equal to 1.

Zobacz również: normalize, length, lengthSquared

QCPVector2D & QCPVector2D::operator*= ( double factor )

Scales this vector by the given factor, i.e. the x and y components are multiplied by factor.

QCPVector2D & QCPVector2D::operator+= ( const QCPVector2D & vector )

Adds the given vector to this vector component-wise.

QCPVector2D & QCPVector2D::operator-= ( const QCPVector2D & vector )

subtracts the given vector from this vector component-wise.

QCPVector2D & QCPVector2D::operator/= ( double divisor )

Scales this vector by the given divisor, i.e. the x and y components are divided by divisor.

QCPVector2D QCPVector2D::perpendicular ( ) const

inline

Returns a vector perpendicular to this vector, with the same length.

double& QCPVector2D::rx ( )

inline

double& QCPVector2D::ry ( )

inline

void QCPVector2D::setX ( double x )

inline

Sets the x coordinate of this vector to x.

Zobacz również: setY

void QCPVector2D::setY ( double y )

inline

Sets the y coordinate of this vector to y.

Zobacz również: setX

QPoint QCPVector2D::toPoint ( ) const

inline

Returns a QPoint which has the x and y coordinates of this vector, truncating any floating point information.

Zobacz również: toPointF

QPointF QCPVector2D::toPointF ( ) const

inline

Returns a QPointF which has the x and y coordinates of this vector.

Zobacz również: toPoint

double QCPVector2D::x ( ) const

inline

double QCPVector2D::y ( ) const

inline

Dokumentacja przyjaciół i funkcji związanych

const QCPVector2D operator*	(	double	factor,
		const QCPVector2D &	vec
	)

friend

const QCPVector2D operator*	(	const QCPVector2D &	vec,
		double	factor
	)

friend

const QCPVector2D operator+	(	const QCPVector2D &	vec1,
		const QCPVector2D &	vec2
	)

friend

const QCPVector2D operator-	(	const QCPVector2D &	vec1,
		const QCPVector2D &	vec2
	)

friend

const QCPVector2D operator- ( const QCPVector2D & vec )

friend

const QCPVector2D operator/	(	const QCPVector2D &	vec,
		double	divisor
	)

friend

QDebug operator<<	(	QDebug	d,
		const QCPVector2D &	vec
	)

Dokumentacja atrybutów składowych

double QCPVector2D::mX

private

double QCPVector2D::mY

private

Dokumentacja dla tej klasy została wygenerowana z plików:

Metody publiczne

Atrybuty prywatne

Przyjaciele

Funkcje powiązane

Opis szczegółowy

Dokumentacja konstruktora i destruktora

Dokumentacja funkcji składowych

Dokumentacja przyjaciół i funkcji związanych

Dokumentacja atrybutów składowych