The `QRotationReading` class represents one reading from the rotation sensor. More

## Synopsis#

### Functions#

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

## Detailed Description#

The rotation reading contains 3 angles, measured in degrees that define the orientation of the device in three-dimensional space. These angles are similar to yaw, pitch and roll but are defined using only right hand rotation with axes as defined by the right hand cartesian coordinate system.

The three angles are applied to the device in the following order.

• Right-handed rotation z (-180, 180]. Starting from the y-axis and incrementing in the counter-clockwise direction.

• Right-handed rotation x [-90, 90]. Starting from the new (once-rotated) y-axis and incrementing towards the z-axis.

• Right-handed rotation y (-180, 180]. Starting from the new (twice-rotated) z-axis and incrementing towards the x-axis.

Here is a visualization showing the order in which angles are applied.

The 0 point for the z angle is defined as a fixed, external entity and is device-specific. While magnetic North is typically used as this reference point it may not be. Do not attempt to compare values for the z angle between devices or even on the same device if it has moved a significant distance.

If the device cannot detect a fixed, external entity the z angle will always be 0 and the `hasZ` property will be set to false.

The 0 point for the x and y angles are defined as when the x and y axes of the device are oriented towards the horizon. Here is an example of how the x value will change with device movement.

Here is an example of how the y value will change with device movement.

Note that when x is 90 or -90, values for z and y achieve rotation around the same axis (due to the order of operations). In this case the y rotation will be 0.

Parameters:

Note

Properties can be used directly when `from __feature__ import true_property` is used or via accessor functions otherwise.

This property holds the rotation around the x axis..

Measured as degrees.

`QRotationReading Units`

Access functions:

This property holds the rotation around the y axis..

Measured as degrees.

`QRotationReading Units`

Access functions:

This property holds the rotation around the z axis..

Measured as degrees.

`QRotationReading Units`

Access functions:
Parameters:
• x – float

• y – float

• z – float

Sets the rotation from three euler angles.

This is to be called from the backend.

The angles are measured in degrees. The order of the rotations matters, as first the `z` rotation is applied, then the `x` rotation and finally the `y` rotation.

Return type:

float

Getter of property `x` .

Getter of property `y` .
Getter of property `z` .