QwtPointPolar(3)

💅 QwtPointPolar(3)

okay so bestie, this is the QwtPointPolar(3) page from the Library Functions Manual — it's giving polar-coordinate main character energy and I'm obsessed. Let's get into it. 💖

✨ NAME ✨

QwtPointPolar — A point in polar coordinates.

🌸 SYNOPSIS 🌸

#include <qwt_point_polar.h>

💖 Public Member Functions 💖

• 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

🌈 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

Definition at line 28 of file qwt_point_polar.h.

---

🎀 Constructor & Destructor Documentation 🎀

QwtPointPolar::QwtPointPolar () [inline]

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.

QwtPointPolar::QwtPointPolar (double azimuth, double radius) [inline]

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.

QwtPointPolar::QwtPointPolar (const QPointF & p)

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.

---

👑 Member Function Documentation 👑

double QwtPointPolar::azimuth () const [inline]

Returns the azimuth.

Definition at line 108 of file qwt_point_polar.h.

bool QwtPointPolar::isNull () const [inline]

Returns true if radius() >= 0.0.

Definition at line 96 of file qwt_point_polar.h.

bool QwtPointPolar::isValid () const [inline]

Returns true if radius() >= 0.0.

Definition at line 90 of file qwt_point_polar.h.

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.

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.

See also: normalized()

Definition at line 105 of file qwt_point_polar.cpp.

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.

See also: normalized()

Definition at line 90 of file qwt_point_polar.cpp.

double QwtPointPolar::radius () const [inline]

Returns the radius.

Definition at line 102 of file qwt_point_polar.h.

double & QwtPointPolar::rAzimuth () [inline]

Returns the azimuth.

Definition at line 120 of file qwt_point_polar.h.

double & QwtPointPolar::rRadius () [inline]

Returns the radius.

Definition at line 114 of file qwt_point_polar.h.

void QwtPointPolar::setAzimuth (double azimuth) [inline]

Sets the azimuth to azimuth.

Definition at line 132 of file qwt_point_polar.h.

void QwtPointPolar::setPoint (const QPointF & p)

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.

void QwtPointPolar::setRadius (double radius) [inline]

Sets the radius to radius.

Definition at line 126 of file qwt_point_polar.h.

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)

See also: isValid(), isNull()

Definition at line 68 of file qwt_point_polar.cpp.

---

🫶 Author 🫶

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

---

cute sign-off time: source/version is the Qwt User's Guide, page QwtPointPolar(3), and there's no date listed — so that's the whole footer vibe. slay. 💖✨