You can get the rotation matrix by calling Gdx.input.getRotation(float[] matrix), it gives you the rotation matrix as per the Android SensorManager getRotationMatrix call (SensorManager.getRotationMatrix).
From that you can get a Quaternion out that is a direction and a rotation around that direction.
So if you you're looking to get the pitch, roll and yaw you can retrieve those from the Quaternion directly;
public class MyAndroidStudioSandboxGame extends Game { @Override public void create () { } @Override public void render () { Gdx.gl.glClearColor(1, 0, 0, 1); Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); float[] mat = new float[4 * 4]; Gdx.input.getRotationMatrix(mat); Matrix4 m = new Matrix4(mat); Quaternion q = m.getRotation(new Quaternion()); Gdx.app.log("SANDBOX", String.format( "Pitch=%.2f, Roll=%.2f, Yaw=%.2f", q.getPitch(), q.getRoll(), q.getYaw())); } }
The above app will log the orientation (Euler angles) of the device to logcat. There are also getPitchRad, getRollRad and getYawRad that gives you the values in radians.
