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Viewing changes to plugins/sensors/core_orientation_sensor.cpp

  • Committer: Package Import Robot
  • Author(s): Ubuntu daily release
  • Date: 2014-01-08 17:17:24 UTC
  • mto: This revision was merged to the branch mainline in revision 6.
  • Revision ID: package-import@ubuntu.com-20140108171724-177zeelodrmtchnd
Tags: upstream-0.6+14.04.20140108.2
Import upstream version 0.6+14.04.20140108.2

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plugins/sensors/core_orientation_sensor.cpp
 
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/*
 
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 * Copyright (C) 2013 Canonical, Ltd.
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU Lesser General Public License as published by
 
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 * the Free Software Foundation; version 3.
 
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 *
 
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 * This program is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 * GNU Lesser General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU Lesser General Public License
 
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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 */
 
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#include "core_orientation_sensor.h"
 
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#include "core_shared_accelerometer.h"
 
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#include <QDebug>
 
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const float core::OrientationSensor::m_accelDelta = 7.35;
 
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core::OrientationSensor::OrientationSensor(QSensor *sensor)
 
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    : QSensorBackend(sensor)
 
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{
 
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    // Register the reading instance with the parent
 
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    setReading<QOrientationReading>(&m_reading);
 
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    const qreal minDelay = core::SharedAccelerometer::instance().getMinDelay();
 
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    if (minDelay > -1)
 
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    {
 
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        // Min and max sensor sampling frequencies, in Hz
 
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        addDataRate(minDelay, minDelay * 10);
 
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    }
 
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    addOutputRange(core::SharedAccelerometer::instance().getMinValue(),
 
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                   core::SharedAccelerometer::instance().getMaxValue(),
 
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                   core::SharedAccelerometer::instance().getResolution());
 
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    // Connect to the accelerometer's readingChanged signal
 
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    connect(&core::SharedAccelerometer::instance(),
 
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            SIGNAL(accelerometerReadingChanged(QSharedPointer<QAccelerometerReading>)), 
 
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            this, 
 
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            SLOT(onAccelerometerReadingChanged(QSharedPointer<QAccelerometerReading>)),
 
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            Qt::QueuedConnection);
 
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    setDescription(QLatin1String("Orientation Sensor"));
 
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}
 
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void core::OrientationSensor::start()
 
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{
 
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    core::SharedAccelerometer::instance().start();
 
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}
 
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void core::OrientationSensor::stop()
 
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{
 
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    core::SharedAccelerometer::instance().stop();
 
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}
 
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void core::OrientationSensor::onAccelerometerReadingChanged(QSharedPointer<QAccelerometerReading> reading)
 
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{
 
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    // Interpret the accelerometer data into a meaningful orientation
 
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    if (reading->y() > m_accelDelta)
 
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        m_reading.setOrientation(QOrientationReading::TopUp);
 
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    else if (reading->y() < -m_accelDelta)
 
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        m_reading.setOrientation(QOrientationReading::TopDown);
 
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    else if (reading->x() > m_accelDelta)
 
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        m_reading.setOrientation(QOrientationReading::RightUp);
 
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    else if (reading->x() < -m_accelDelta)
 
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        m_reading.setOrientation(QOrientationReading::LeftUp);
 
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    else if (reading->z() > m_accelDelta)
 
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        m_reading.setOrientation(QOrientationReading::FaceUp);
 
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    else if (reading->z() < -m_accelDelta)
 
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        m_reading.setOrientation(QOrientationReading::FaceDown);
 
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    if (m_reading.orientation() != m_readingCache.orientation())
 
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    {
 
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        // Emit readingChanged signal only if orientation actually changes
 
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        newReadingAvailable();
 
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    }
 
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    m_readingCache.setOrientation(m_reading.orientation());
 
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}