NAME¶

QwtPointPolar - A point in polar coordinates.

SYNOPSIS¶

#include <qwt_point_polar.h>

Public Member Functions¶

QwtPointPolar () QwtPointPolar (double azimuth, double radius) QwtPointPolar (const QwtPointPolar &) QwtPointPolar (const QPointF &) void setPoint (const QPointF &) QPointF toPoint () const bool isValid () const bool isNull () const double radius () const double azimuth () const double & rRadius () double & rAzimuth () void setRadius (double) void setAzimuth (double) bool operator== (const QwtPointPolar &) const bool operator!= (const QwtPointPolar &) const QwtPointPolar normalized () const

Detailed Description¶

A point in polar coordinates. In polar coordinates a point is determined by an angle and a distance. See http://en.wikipedia.org/wiki/Polar_coordinate_system

Constructor & Destructor Documentation¶

QwtPointPolar::QwtPointPolar () [inline] Constructs a null point, with a radius and azimuth set to 0.0.¶

See also:

QwtPointPolar::QwtPointPolar (doubleazimuth, doubleradius) [inline] Constructs a point with coordinates specified by radius and azimuth.¶

Parameters:

QwtPointPolar::QwtPointPolar (const QwtPointPolar &other) [inline] Constructs a point using the values of the point specified.¶

Parameters:

QwtPointPolar::QwtPointPolar (const QPointF &p) Convert and assign values from a point in Cartesian coordinates¶

Parameters: See also:

Member Function Documentation¶

double QwtPointPolar::azimuth () const [inline]¶

Returns the azimuth.

bool QwtPointPolar::isNull () const [inline]¶

Returns true if radius() >= 0.0.

bool QwtPointPolar::isValid () const [inline]¶

Returns true if radius() >= 0.0.

QwtPointPolar QwtPointPolar::normalized () const Normalize radius and azimuth¶

When the radius is < 0.0 it is set to 0.0. The azimuth is a value >= 0.0 and < 2 * M_PI.

bool QwtPointPolar::operator!= (const QwtPointPolar &other) const Returns true if point1 is not equal to point2; otherwise returns false.¶

Two points are equal to each other if radius and azimuth-coordinates are the same. Points are not equal, when the azimuth differs, but other.azimuth() == azimuth() % (2 * PI). See also:

bool QwtPointPolar::operator== (const QwtPointPolar &other) const Returns true if point1 is equal to point2; otherwise returns false.¶

Two points are equal to each other if radius and azimuth-coordinates are the same. Points are not equal, when the azimuth differs, but other.azimuth() == azimuth() % (2 * PI). See also:

double QwtPointPolar::radius () const [inline]¶

Returns the radius.

double & QwtPointPolar::rAzimuth () [inline]¶

Returns the azimuth.

double & QwtPointPolar::rRadius () [inline]¶

Returns the radius.

void QwtPointPolar::setAzimuth (doubleazimuth) [inline]¶

Sets the atimuth to atimuth.

void QwtPointPolar::setPoint (const QPointF &p) Convert and assign values from a point in Cartesian coordinates¶

Parameters:

void QwtPointPolar::setRadius (doubleradius) [inline]¶

Sets the radius to radius.

QPointF QwtPointPolar::toPoint () const Convert and return values in Cartesian coordinates¶

Note: See also:

Author¶

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