@Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() != Sensor.TYPE_ORIENTATION) {
return;
}
float roll = event.values[2];
rollFilter.pushValue(roll);
if (startAngle.getCount() == 0 && rollFilter.getCount() == SETTLE_COUNT) {
startAngle.pushValue(rollFilter.getValue());
}
}
public float deltaAngle() {
if (startAngle.getCount() == 0) {
return 0;
}
return rollFilter.getValue() - startAngle.getValue();
}