Compass Plugin and Tilt Compensation

[sisaacks]

I am developing an app where I need a compass to account for tilt compensation.
I noticed that James Montemagno and cbartonnh created the Compass Plugin
They use SensorManager.GetRotationMatrix and SensorManager.GetOrientation in OnSensorChanged
I have googled and googled but I cant confirm if these methods are actually accounting for tilt.
The info I did find was about Android and not iOS.
Any help would be much appreciated

 

[Skydiver]

Can you explain what he does with those matrix values? If you know what he is doing with those, then that would tell you if they account for tilt or not.

 

[sisaacks]

Here is the link:

CompassPlugin/src/Plugin.Compass.Android/CompassImplementation.cs at master · JarleySoft/CompassPlugin

Compass Plugin for Xamarin and Windows. Contribute to JarleySoft/CompassPlugin development by creating an account on GitHub.

github.com

Here is the code:

SensorManager.GetRotationMatrix(r, null, lastAccelerometer, lastMagnetometer);
SensorManager.GetOrientation(r, orientation); var azimuthInRadians = orientation[0]; var azimuthInDegress = (Java.Lang.Math.ToDegrees(azimuthInRadians) + 360.0) % 360.0;
Being that the second value for GetRotaion is NULL, I dont believe this is accounting for tilt compensation. But I am not 100% sure.