Qwt User's Guide: QwtPoint3D Class Reference

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QwtPoint3D Class Reference

QwtPoint3D class defines a 3D point in double coordinates. More...

`#include <qwt_point_3d.h>`

## Public Member Functions

| QwtPoint3D ()
| QwtPoint3D (double x, double y, double z)
| Constructs a point with coordinates specified by x, y and z.
| QwtPoint3D (const QwtPoint3D &)
| QwtPoint3D (const QPointF &)
bool | isNull () const
double | x () const
double | y () const
double | z () const
double & | rx ()
double & | ry ()
double & | rz ()
void | setX (double x)
| Sets the x-coordinate of the point to the value specified by x.
void | setY (double y)
| Sets the y-coordinate of the point to the value specified by y.
void | setZ (double y)
| Sets the z-coordinate of the point to the value specified by z.
QPointF | toPoint () const
bool | operator== (const QwtPoint3D &) const
bool | operator!= (const QwtPoint3D &) const

## Detailed Description

QwtPoint3D class defines a 3D point in double coordinates.

## Constructor & Destructor Documentation

QwtPoint3D::QwtPoint3D | ( |  | ) |

inline

Constructs a null point.

See Also
  isNull()

QwtPoint3D::QwtPoint3D | ( | const QwtPoint3D & | other | ) |

inline

Copy constructor. Constructs a point using the values of the point specified.

QwtPoint3D::QwtPoint3D | ( | const QPointF & | other | ) |

inline

Constructs a point with x and y coordinates from a 2D point, and a z coordinate of 0.

## Member Function Documentation

bool QwtPoint3D::isNull | ( |  | ) | const

inline

Returns
  True if the point is null; otherwise returns false.

A point is considered to be null if x, y and z-coordinates are equal to zero.

bool QwtPoint3D::operator!= | ( | const QwtPoint3D & | other | ) | const

inline

Returns
  True if this rect and other are different; otherwise returns false.

bool QwtPoint3D::operator== | ( | const QwtPoint3D & | other | ) | const

inline

Returns
  True, if this point and other are equal; otherwise returns false.

double & QwtPoint3D::rx | ( |  | ) |

inline

Returns
  A reference to the x-coordinate of the point.

double & QwtPoint3D::ry | ( |  | ) |

inline

Returns
  A reference to the y-coordinate of the point.

double & QwtPoint3D::rz | ( |  | ) |

inline

Returns
  A reference to the z-coordinate of the point.

QPointF QwtPoint3D::toPoint | ( |  | ) | const

inline

Returns
  2D point, where the z coordinate is dropped.

double QwtPoint3D::x | ( |  | ) | const

inline

Returns
  The x-coordinate of the point.

double QwtPoint3D::y | ( |  | ) | const

inline

Returns
  The y-coordinate of the point.

double QwtPoint3D::z | ( |  | ) | const

inline

Returns
  The z-coordinate of the point.