QwtPoint3D class defines a 3D point in double coordinates.  
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#include <qwt_point_3d.h>
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|  | QwtPoint3D () | 
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|  | QwtPoint3D (double x, double y, double z) | 
|  | Constructs a point with coordinates specified by x, y and z. 
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|  | QwtPoint3D (const QwtPoint3D &) | 
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|  | QwtPoint3D (const QPointF &) | 
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| bool | isNull () const | 
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| double | x () const | 
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| double | y () const | 
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| double | z () const | 
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| double & | rx () | 
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| double & | ry () | 
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| double & | rz () | 
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| void | setX (double x) | 
|  | Sets the x-coordinate of the point to the value specified by x. 
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| void | setY (double y) | 
|  | Sets the y-coordinate of the point to the value specified by y. 
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| void | setZ (double y) | 
|  | Sets the z-coordinate of the point to the value specified by z. 
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| QPointF | toPoint () const | 
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| bool | operator== (const QwtPoint3D &) const | 
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| bool | operator!= (const QwtPoint3D &) const | 
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QwtPoint3D class defines a 3D point in double coordinates. 
  
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          | QwtPoint3D::QwtPoint3D | ( |  | ) |  |  | inline | 
 
Constructs a null point. 
- See also
- isNull() 
 
 
  
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          | QwtPoint3D::QwtPoint3D | ( | const QwtPoint3D & | other | ) |  |  | inline | 
 
Copy constructor. Constructs a point using the values of the point specified. 
 
 
  
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          | QwtPoint3D::QwtPoint3D | ( | const QPointF & | other | ) |  |  | inline | 
 
Constructs a point with x and y coordinates from a 2D point, and a z coordinate of 0. 
 
 
  
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          | 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. 
 
 
  
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          | bool QwtPoint3D::operator!= | ( | const QwtPoint3D & | other | ) | const |  | inline | 
 
- Returns
- True if this rect and other are different; otherwise returns false. 
 
 
  
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          | bool QwtPoint3D::operator== | ( | const QwtPoint3D & | other | ) | const |  | inline | 
 
- Returns
- True, if this point and other are equal; otherwise returns false. 
 
 
  
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          | double & QwtPoint3D::rx | ( |  | ) |  |  | inline | 
 
- Returns
- A reference to the x-coordinate of the point. 
 
 
  
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          | double & QwtPoint3D::ry | ( |  | ) |  |  | inline | 
 
- Returns
- A reference to the y-coordinate of the point. 
 
 
  
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          | double & QwtPoint3D::rz | ( |  | ) |  |  | inline | 
 
- Returns
- A reference to the z-coordinate of the point. 
 
 
  
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          | QPointF QwtPoint3D::toPoint | ( |  | ) | const |  | inline | 
 
- Returns
- 2D point, where the z coordinate is dropped. 
 
 
  
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          | double QwtPoint3D::x | ( |  | ) | const |  | inline | 
 
- Returns
- The x-coordinate of the point. 
 
 
  
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          | double QwtPoint3D::y | ( |  | ) | const |  | inline | 
 
- Returns
- The y-coordinate of the point. 
 
 
  
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          | double QwtPoint3D::z | ( |  | ) | const |  | inline | 
 
- Returns
- The z-coordinate of the point.