QwtPoint3D class defines a 3D point in double coordinates
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#include <qwt_point_3d.h>
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| | QwtPoint3D () |
| | Default constructor - constructs a null point
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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 QPointF &) |
| | Constructs a point with x and y coordinates from a 2D point, and z coordinate of 0
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| bool | isNull () const noexcept |
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double | x () const noexcept |
| | Return the x-coordinate of the point
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double | y () const noexcept |
| | Return the y-coordinate of the point
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double | z () const noexcept |
| | Return the z-coordinate of the point
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double & | rx () noexcept |
| | Return a reference to the x-coordinate of the point
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double & | ry () noexcept |
| | Return a reference to the y-coordinate of the point
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double & | rz () noexcept |
| | Return a reference to the z-coordinate of the point
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void | setX (double x) noexcept |
| | Set the x-coordinate of the point to x
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void | setY (double y) noexcept |
| | Set the y-coordinate of the point to y
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void | setZ (double y) noexcept |
| | Set the z-coordinate of the point to z
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| QPointF | toPoint () const noexcept |
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bool | operator== (const QwtPoint3D &) const noexcept |
| | Return true if this point and other are equal
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bool | operator!= (const QwtPoint3D &) const noexcept |
| | Return true if this point and other are different
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QwtPoint3D class defines a 3D point in double coordinates
◆ QwtPoint3D() [1/3]
| QwtPoint3D::QwtPoint3D |
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inline |
Default constructor - constructs a null point
- 参见
- isNull()
◆ QwtPoint3D() [2/3]
| QwtPoint3D::QwtPoint3D |
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double |
x, |
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double |
y, |
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double |
z = 0.0 |
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) |
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inline |
Constructs a point with coordinates specified by x, y and z
- 参数
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| x | X coordinate |
| y | Y coordinate |
| z | Z coordinate (default 0.0) |
◆ QwtPoint3D() [3/3]
| QwtPoint3D::QwtPoint3D |
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const QPointF & |
other | ) |
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inline |
Constructs a point with x and y coordinates from a 2D point, and z coordinate of 0
- 参数
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◆ isNull()
| bool QwtPoint3D::isNull |
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const |
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inlinenoexcept |
- 返回
- True if the point is null (x, y, z all equal to zero); otherwise false
◆ toPoint()
| QPointF QwtPoint3D::toPoint |
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const |
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inlinenoexcept |
- 返回
- 2D point with the z coordinate dropped
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