@Override
public void onSensorChanged(final SensorEvent se) {
// se.timestamp returns a time in nanoseconds. Why divide it by 1000? The timestamps ought to be
// in nanoseconds, not microseconds...
long timestamp = (long) se.timestamp / 1000;
this.accuracy = se.accuracy;
if (se.sensor.getType() != Sensor.TYPE_ACCELEROMETER) {
if (debug) Log.e(tag, "Sensor not accelerometer: " + se.sensor.getType());
return;
}
// save the last vector
prev_vector.set(curr_vector);
if (prev_vector.getTimeStamp() <= 0) prev_vector.setTimeStamp(timestamp);
prev_ori = curr_ori;
/**
* All values are in SI units (m/s^2) values[0]: Acceleration minus Gx on the x-axis values[1]:
* Acceleration minus Gy on the y-axis values[2]: Acceleration minus Gz on the z-axis
*/
curr_vector.set(se.values[0], se.values[1], se.values[2]);
curr_vector.setTimeStamp(timestamp);
// Orientation between position at timestamp x and timestamp (x-1)
// Note: The first iteration, prev_vector will be 0;
curr_ori = curr_vector.orientation(prev_vector);
vectorList.add(curr_vector.copy());
// db.addDataItem(this.deID, curr_vector.getTimeStamp(), se.accuracy, curr_vector.getX(),
// curr_vector.getY(), curr_vector.getZ(), curr_vector.getRSS());
}