Created by Voronov Konstantin me@konstantinvoronov.com

CameraLevel_Overlay demonstrates how to make photography style HorizonLevel overlay using Accelerometer sensor ONLY App uses CameraX APIs and is written in Kotlin.

Story: Google's current approach to determine phone position works only with both MagneticField and Accelerometer sensor https://developer.android.com/guide/topics/sensors/sensors_position Google documentation guides developers to use getRotationMatrix to get phone angles which requires magnetic senors readings

SensorManager.getRotationMatrix(rotationMatrix, null, accelerometerReading, magnetometerReading)

Using two sensors for CameraLevel is an excessive approach and less universal Many cheap android phone yet lack magneticfield sensor and thus lack positioning feature

CameraLevel_Overlay is a simple way to make photography style Horizontal level using only Accelerometer sensor

You can receive pitch roll using bubblelevel_overlay.setOnActionListener { pitch, roll -> }

or update CameraLevel_Overlay.update_ui to handle everything in class

Another good cameralevel overlay based on two sensors https://github.com/cyjack-blip/CameraLevel