Head tilt position ARKit - iOS

Question

Is there a way to determine if the head position is tilted to the left or right or even centered using ARKit. Can we use ARFaceAnchor 's leftEyeTransform & rightEyeTransform to find the tilt position of user's head? Is there any better way to find this? I'm a starter in ARKit and SceneKit world, sorry if my question wasn't clear.

Answer 1

The documentation states

The inherited transform property describes the face's current position and orientation in world coordinates; that is, in a coordinate space relative to that specified by the worldAlignment property of the session configuration.

And so if you're using ARWorldAlignmentGravity or ARWorldAlignmentGravityAndHeading (« The coordinate system's y-axis is parallel to gravity ») you can determine whether the head is tilted or not.