· Page d'accueil · Toutes les classes · Toutes les fonctions · Vues d'ensemble ·

QCompassReading Class Reference

The QCompassReading class represents one reading from a compass. More...

 #include <QCompassReading>

Inherits: QSensorReading.

This class was introduced in Qt Mobility 1.0.

List of all members, including inherited members

Properties

azimuth : const qreal
calibrationLevel : const qreal

1 property inherited from QSensorReading
1 property inherited from QObject

Public Functions

qreal	azimuth () const
qreal	calibrationLevel () const
void	setAzimuth ( qreal azimuth )
void	setCalibrationLevel ( qreal calibrationLevel )

4 public functions inherited from QSensorReading
29 public functions inherited from QObject

Additional Inherited Members

1 public slot inherited from QObject
1 signal inherited from QObject
1 public variable inherited from QObject
4 static public members inherited from QObject
7 protected functions inherited from QObject
2 protected variables inherited from QObject

Detailed Description

The QCompassReading class represents one reading from a compass.

QCompassReading Units

The compass returns the azimuth of the device as degrees from magnetic north in a clockwise direction based on the top of the UI. There is also a value to indicate the calibration status of the device. If the device is not calibrated the azimuth may not be accurate.

Digital compasses are susceptible to magnetic interference and may need calibration after being placed near anything that emits a magnetic force. Accuracy of the compass can be affected by any ferrous materials that are nearby.

The calibration status of the device is measured as a number from 0 to 1. A value of 1 is the highest level that the device can support and 0 is the worst.

Property Documentation

azimuth : const qreal

This property holds the azimuth of the device.

Measured in degrees from magnetic north in a clockwise direction based the top of the UI.

This property was introduced in Qt Mobility 1.0.

Access functions:

qreal azimuth () const

See also QCompassReading Units.

calibrationLevel : const qreal

This property holds the calibration level of the reading.

Measured as a value from 0 to 1 with higher values being better.

This property was introduced in Qt Mobility 1.0.

Access functions:

qreal calibrationLevel () const

Member Function Documentation

void QCompassReading::setAzimuth ( qreal azimuth )

Sets the azimuth of the device.

This function was introduced in Qt Mobility 1.0.

See also azimuth() and QCompassReading Units.

void QCompassReading::setCalibrationLevel ( qreal calibrationLevel )

Sets the calibration level of the reading to calibrationLevel.

This function was introduced in Qt Mobility 1.0.

See also calibrationLevel().

Best Of

Actualités les plus lues

Semaine

Mois

Année

Le Qt Developer Network au hasard

Introduction

Le Qt Developer Network est un réseau de développeurs Qt anglophone, où ils peuvent partager leur expérience sur le framework. Lire l'article.

Communauté

Ressources

Liens utiles

Contact

Vous souhaitez rejoindre la rédaction ou proposer un tutoriel, une traduction, une question... ? Postez dans le forum Contribuez ou contactez-nous par MP ou par email (voir en bas de page).

Qt dans le magazine

Cette page est une traduction d'une page de la documentation de Qt, écrite par Nokia Corporation and/or its subsidiary(-ies). Les éventuels problèmes résultant d'une mauvaise traduction ne sont pas imputables à Nokia.	Qt qtmobility-1.2
Copyright © 2012 Developpez LLC. Tous droits réservés Developpez LLC. Aucune reproduction, même partielle, ne peut être faite de ce site et de l'ensemble de son contenu : textes, documents et images sans l'autorisation expresse de Developpez LLC. Sinon, vous encourez selon la loi jusqu'à 3 ans de prison et jusqu'à 300 000 E de dommages et intérêts. Cette page est déposée à la SACD.
Vous avez déniché une erreur ? Un bug ? Une redirection cassée ? Ou tout autre problème, quel qu'il soit ? Ou bien vous désirez participer à ce projet de traduction ? N'hésitez pas à nous contacter ou par MP !