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Qwt User's Guide 6.0.0
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A point in polar coordinates. More...
#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 |
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
| QwtPointPolar::QwtPointPolar | ( | ) | [inline] |
Constructs a null point, with a radius and azimuth set to 0.0.
| QwtPointPolar::QwtPointPolar | ( | double | azimuth, |
| double | radius | ||
| ) | [inline] |
Constructs a point with coordinates specified by radius and azimuth.
| azimuth | Azimuth |
| radius | Radius |
| QwtPointPolar::QwtPointPolar | ( | const QwtPointPolar & | other | ) | [inline] |
Constructs a point using the values of the point specified.
| other | Other point |
| QwtPointPolar::QwtPointPolar | ( | const QPointF & | p | ) |
Convert and assign values from a point in Cartesian coordinates
| p | Point in Cartesian coordinates |
| 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).
| 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).
| 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 | ( | double | azimuth | ) | [inline] |
Sets the atimuth to atimuth.
| void QwtPointPolar::setPoint | ( | const QPointF & | p | ) |
Convert and assign values from a point in Cartesian coordinates
| p | Point in Cartesian coordinates |
| void QwtPointPolar::setRadius | ( | double | radius | ) | [inline] |
Sets the radius to radius.
1.7.3