Provided by: libqwt-doc_6.1.2-5_all

#### 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
Returns true if radius() >= 0.0.
bool isNull () const
Returns true if radius() >= 0.0.
double radius () const
double azimuth () const
Returns the azimuth.
double & rRadius ()
double & rAzimuth ()
Returns the azimuth.
void setAzimuth (double)
Sets the atimuth to atimuth.
bool operator== (const QwtPointPolar &) const
Compare 2 points.
bool operator!= (const QwtPointPolar &) const
QwtPointPolar normalized () const

```

#### DetailedDescription

```       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&DestructorDocumentation

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

QPointF::isNull()

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

Parameters:
azimuth Azimuth

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

Parameters:
other Other point

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

Parameters:
p Point in Cartesian coordinates

setPoint(), toPoint()

```

#### MemberFunctionDocumentation

```   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.

Returns:
Normalized point

bool QwtPointPolar::operator!= (const QwtPointPolar &other) const
Compare 2 points

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).

Returns:
True if the point is not equal to other; otherwise return false.

normalized()

bool QwtPointPolar::operator== (const QwtPointPolar &other) const
Compare 2 points. 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).

Returns:
True if the point is equal to other; otherwise return false.

normalized()

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

Parameters:
p Point in Cartesian coordinates

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

Returns:
Converted point in Cartesian coordinates

Note:
Invalid or null points will be returned as QPointF(0.0, 0.0)

```       Generated automatically by Doxygen for Qwt User's Guide from the source code.