qtmobility/examples/sensors/panorama/tapcontroller.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 23 Jun 2010 19:08:38 +0300
changeset 14 6fbed849b4f4
parent 11 06b8e2af4411
permissions -rw-r--r--
Revision: 201023 Kit: 2010125
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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#include "tapcontroller.h"
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#include <QDebug>
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const qreal TapController::m_timewindow=1000;
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TapController::TapController(): TimedController(), m_step(20){
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    m_accelerometer.connectToBackend();
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    m_accelerometer.start();
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    connect(&m_accelerometer, SIGNAL(readingChanged()), this, SLOT(updateAcce()));
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    m_tap.connectToBackend();
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    m_tap.start();
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    connect(&m_tap, SIGNAL(readingChanged()), this, SLOT(update()));
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}
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TapController::~TapController(){
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    m_tap.stop();
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    disconnect(&m_tap);
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    m_accelerometer.stop();
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    disconnect(&m_accelerometer);
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}
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void TapController::update()
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{
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    int direction = m_tap.reading()->tapDirection();
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    switch(direction){
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    case QTapReading::X:
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    case QTapReading::X_Pos:
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    case QTapReading::X_Neg:
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        m_dy=0;
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        setDx(direction);
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        break;
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    case QTapReading::Y:
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    case QTapReading::Y_Pos:
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    case QTapReading::Y_Neg:
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        m_dx = 0;
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        setDy(direction);
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        break;
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    case QTapReading::Undefined:
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    case QTapReading::Z:
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    case QTapReading::Z_Pos:
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    case QTapReading::Z_Neg:
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    default:
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        m_dx = 0; m_dy = 0;
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        return;
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    }    
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}
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void TapController::updateAcce()
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{
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    qreal accX = m_accelerometer.reading()->x();
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    qreal accY= m_accelerometer.reading()->y();
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    m_now = m_accelerometer.reading()->timestamp();
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    checkX(accX);
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    checkY(accY);
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}
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void TapController::updateCoordinates(){
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    if (m_now - m_timestampX > m_timewindow){
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        m_absMaxX = 0;
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        m_timestampX = m_now;
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    }
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    if (m_now - m_timestampY > m_timewindow){
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        m_absMaxY = 0;
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        m_timestampY = m_now;
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    }
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    if (m_dx!=0) m_dx = m_dx>0? m_dx-1: m_dx+1;
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    if (m_dy!=0) m_dy = m_dy>0? m_dy-1: m_dy+1;
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    m_x +=m_dx;
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    m_y +=m_dy;
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}
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void TapController::checkX(qreal accX){
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    if (qAbs(accX)>qAbs(m_absMaxX)){
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        m_absMaxX = accX;
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        m_timestampX = m_now;
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    }
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}
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void TapController::checkY(qreal accY){
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    if (qAbs(accY)>qAbs(m_absMaxY)){
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        m_absMaxY = accY;
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        m_timestampY = m_now;
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    }
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}
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void TapController::setDx(int direction){
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    switch(direction){
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    case QTapReading::X:
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        m_dx = m_absMaxX>0?m_step : -m_step;
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        break;
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    case QTapReading::X_Pos:
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        m_dx = m_step;
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        break;
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    case QTapReading::X_Neg:
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   114
        m_dx = -m_step;
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   115
        break;
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   116
    }
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   117
}
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   118
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   119
void TapController::setDy(int direction){
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   120
    switch(direction){
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   121
    case QTapReading::Y:
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   122
        m_dy = m_absMaxY>0?m_step : - m_step;
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   123
        break;
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   124
    case QTapReading::Y_Pos:
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   125
        m_dy = m_step;
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   126
        break;
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   127
    case QTapReading::Y_Neg:
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   128
        m_dy = -m_step;
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   129
        break;
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   130
    }
06b8e2af4411 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   131
}
14
6fbed849b4f4 Revision: 201023
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 11
diff changeset
   132