QDistanceReading Class

The QDistanceReading class holds distance reading in cm from the proximity sensor. More...

Header: #include <QDistanceReading>
qmake: QT += sensors
Since: Qt 5.4
Inherits: QSensorReading

Properties

Public Functions

QDistanceReading(QObject *parent = DECLARE_READING(QDistanceReading))
virtual ~QDistanceReading()
qreal distance() const
void setDistance(qreal distance)

Reimplemented Public Functions

virtual void copyValuesFrom(QSensorReading *other) override

Detailed Description

The QDistanceReading class holds distance reading in cm from the proximity sensor.

The QDistanceReading class holds distance reading in cm from the proximity sensor. Note: Some proximity sensor only support two values for distance, a near and far value. In this case, the sensor should report its maximum range value to represent the far state, and a lesser value to represent the near state.

QDistanceReading Units

The distance is measured in cm

The distance sensor is typically located in the front face of a device, and thus will measure the distance of an object from the device's front face.

Property Documentation

distance : const qreal

distance of object from front face of device

Access functions:

qreal distance() const

See also QDistanceReading Units.

Member Function Documentation

QDistanceReading::QDistanceReading(QObject *parent = DECLARE_READING(QDistanceReading))

Default constructs an instance of QDistanceReading.

[virtual] QDistanceReading::~QDistanceReading()

Destroys the instance of QDistanceReading. The destructor is virtual.

[override virtual] void QDistanceReading::copyValuesFrom(QSensorReading *other)

void QDistanceReading::setDistance(qreal distance)

Sets distance to distance.

See also distance().