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PODifferent values between sensors TYPE_ACCELEROMETER/TYPE_MAGNETIC_FIELD and TYPE_ORIENTATION
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copied!<p>There are 2 ways to get the 3 rotation values (azimuth, pitch, roll).</p> <p>One is registering a listener of a type TYPE_ORIENTATION. It's the easiest way and I get a correct range of values from every rotation as the documentation says: azimuth: [0, 359] pitch: [-180, 180] roll: [-90, 90]</p> <p>The other one, the most precise and complex to understand the first time you see it. Android recommends it, so I want to use it, but I get different values.</p> <p>azimuth: [-180, 180]. -180/180 is S, 0 i N, 90 E and -90 W.<br/> pitch: [-90, 90]. 90 is 90, -90 is -90, 0 is 0 but -180/180 (lying with the screen downwards) is 0.<br/> roll: [-180, 180].</p> <p>I should get the same values but with decimals, right?</p> <p>I have the following code:</p> <pre><code>aValues = new float[3]; mValues = new float[3]; sensorListener = new SensorEventListener (){ public void onSensorChanged (SensorEvent event){ switch (event.sensor.getType ()){ case Sensor.TYPE_ACCELEROMETER: aValues = event.values.clone (); break; case Sensor.TYPE_MAGNETIC_FIELD: mValues = event.values.clone (); break; } float[] R = new float[16]; float[] orientationValues = new float[3]; SensorManager.getRotationMatrix (R, null, aValues, mValues); SensorManager.getOrientation (R, orientationValues); orientationValues[0] = (float)Math.toDegrees (orientationValues[0]); orientationValues[1] = (float)Math.toDegrees (orientationValues[1]); orientationValues[2] = (float)Math.toDegrees (orientationValues[2]); azimuthText.setText ("azimuth: " + orientationValues[0]); pitchText.setText ("pitch: " + orientationValues[1]); rollText.setText ("roll: " + orientationValues[2]); } public void onAccuracyChanged (Sensor sensor, int accuracy){} }; </code></pre> <p>Please help. It's very frustrating.</p> <p>Do I have to treat with those values or I'm doing something wrong?</p> <p>Thanks.</p>

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