qtmobility/src/sensors/qaccelerometer.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 03 May 2010 13:18:40 +0300
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permissions -rw-r--r--
Revision: 201015 Kit: 201018
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qaccelerometer.h"
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#include "qaccelerometer_p.h"
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QTM_BEGIN_NAMESPACE
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IMPLEMENT_READING(QAccelerometerReading)
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/*!
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    \class QAccelerometerReading
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    \ingroup sensors_reading
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    \preliminary
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    \brief The QAccelerometerReading class reports on linear acceleration
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           along the X, Y and Z axes.
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    \section2 QAccelerometerReading Units
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    The scale of the values is meters per second squared.
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    The axes are arranged as follows.
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\code
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             +z
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              |
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              |      +y
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              |     /
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              |----/----
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             /| NOKIA  /|
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            //|--/--- / |
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           // | /   //  /
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          //  |/   //  /
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         //   '--------------- +x
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        //       //  /
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       //       //  /
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      /---------/  /
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     /    O    /  /
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    /         /  /
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    ----------  /
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    |_________!/
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\endcode
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    A monoblock device sitting at rest, face up on a desk will experience
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    a force of approximately 9.8 on the Z axis (ie. towards the roof).
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    This is the proper acceleration the device experiences relative to 
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    freefall.
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*/
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/*!
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    \property QAccelerometerReading::x
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    \brief the acceleration on the X axis.
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    The scale of the values is meters per second squared.
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    \sa {QAccelerometerReading Units}
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*/
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qreal QAccelerometerReading::x() const
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{
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    return d->x;
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}
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/*!
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    Sets the acceleration on the X axis to \a x.
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*/
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void QAccelerometerReading::setX(qreal x)
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{
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    d->x = x;
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}
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/*!
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    \property QAccelerometerReading::y
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    \brief the acceleration on the Y axis.
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    The scale of the values is meters per second squared.
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    \sa {QAccelerometerReading Units}
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*/
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qreal QAccelerometerReading::y() const
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{
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    return d->y;
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}
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/*!
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    Sets the acceleration on the Y axis to \a y.
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*/
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void QAccelerometerReading::setY(qreal y)
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{
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    d->y = y;
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}
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/*!
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    \property QAccelerometerReading::z
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    \brief the acceleration on the Z axis.
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    The scale of the values is meters per second squared.
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    \sa {QAccelerometerReading Units}
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*/
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qreal QAccelerometerReading::z() const
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{
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    return d->z;
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}
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/*!
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    Sets the acceleration on the Z axis to \a z.
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*/
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void QAccelerometerReading::setZ(qreal z)
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{
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    d->z = z;
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}
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// =====================================================================
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/*!
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    \class QAccelerometerFilter
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    \ingroup sensors_filter
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    \preliminary
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    \brief The QAccelerometerFilter class is a convenience wrapper around QSensorFilter.
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    The only difference is that the filter() method features a pointer to QAccelerometerReading
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    instead of QSensorReading.
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*/
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/*!
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    \fn QAccelerometerFilter::filter(QAccelerometerReading *reading)
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    Called when \a reading changes. Returns false to prevent the reading from propagating.
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    \sa QSensorFilter::filter()
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*/
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const char *QAccelerometer::type("QAccelerometer");
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/*!
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    \class QAccelerometer
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    \ingroup sensors_type
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    \preliminary
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    \brief The QAccelerometer class is a convenience wrapper around QSensor.
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    The only behavioural difference is that this class sets the type properly.
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    This class also features a reading() function that returns a QAccelerometerReading instead of a QSensorReading.
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    For details about how the sensor works, see \l QAccelerometerReading.
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    \sa QAccelerometerReading
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*/
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/*!
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    \fn QAccelerometer::QAccelerometer(QObject *parent)
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    Construct the sensor as a child of \a parent.
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*/
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/*!
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    \fn QAccelerometer::~QAccelerometer()
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    Destroy the sensor. Stops the sensor if it has not already been stopped.
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*/
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/*!
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    \fn QAccelerometer::reading() const
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    Returns the reading class for this sensor.
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    \sa QSensor::reading()
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*/
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#include "moc_qaccelerometer.cpp"
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QTM_END_NAMESPACE
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