QwtPointPolar(3) Qwt User's Guide QwtPointPolar(3)

QwtPointPolar - A point in polar coordinates.

#include <qwt_point_polar.h>


QwtPointPolar ()
QwtPointPolar (double azimuth, double radius)
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
Returns the radius. double azimuth () const
Returns the azimuth. double & rRadius ()
Returns the radius. double & rAzimuth ()
Returns the azimuth. void setRadius (double)
Sets the radius to radius. void setAzimuth (double)
Sets the azimuth to azimuth. bool operator== (const QwtPointPolar &) const
Compare 2 points. bool operator!= (const QwtPointPolar &) const
QwtPointPolar normalized () const

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

Definition at line 28 of file qwt_point_polar.h.

Constructs a null point, with a radius and azimuth set to 0.0.

See also

QPointF::isNull()

Definition at line 71 of file qwt_point_polar.h.

Constructs a point with coordinates specified by radius and azimuth.

Parameters

azimuth Azimuth
radius Radius

Definition at line 83 of file qwt_point_polar.h.

Convert and assign values from a point in Cartesian coordinates

Parameters

p Point in Cartesian coordinates

See also

setPoint(), toPoint()

Definition at line 44 of file qwt_point_polar.cpp.

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

Definition at line 118 of file qwt_point_polar.cpp.

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.

See also

normalized()

Definition at line 105 of file qwt_point_polar.cpp.

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.

See also

normalized()

Definition at line 90 of file qwt_point_polar.cpp.

Convert and assign values from a point in Cartesian coordinates

Parameters

p Point in Cartesian coordinates

Definition at line 54 of file qwt_point_polar.cpp.

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)

See also

isValid(), isNull()

Definition at line 68 of file qwt_point_polar.cpp.

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Sun Jul 18 2021 Version 6.2.0