1 

     2 

     3 #include "magnetometercontroller.h"

     4 #include "view.h"

     5 

     6 MagnetometerController::MagnetometerController(): m_width(View::m_imageWidth){

     7     setDataRate(&m_magnetometer);

     8     m_magnetometer.setProperty("returnGeoValues", true);

     9     doStart();

    10 }

    11 

    12 

    13 MagnetometerController::~MagnetometerController(){

    14     disconnect(&m_magnetometer);

    15 }

    16 

    17 

    18 void MagnetometerController::update()

    19 {

    20     qreal azimuth = -m_magnetometer.reading()->z();

    21     azimuth = azimuth<0?360+azimuth:azimuth;

    22     m_x = (int)(-azimuth * m_width/360);

    23 

    24 

    25     //TODO: consider provide y values based on x and y

    26 }

    27 

    28 

    29 

    30 

    31 void MagnetometerController::doStart(){

    32     m_magnetometer.start();

    33     connect(&m_magnetometer, SIGNAL(readingChanged()), this, SLOT(update()));

    34 }

    35 

    36 

    37 void MagnetometerController::doStop(){

    38     m_magnetometer.disconnect();

    39     m_magnetometer.stop();

    40 }