This post is from the Activity iPhone Duo SwiftUI Q&A.
How often is onHingeChange delivered: every frame, or smoothed and throttled? Is it called with the initial context when the view appears, or only on change? Is there a guaranteed angle range and precision?
How often is onHingeChange delivered: every frame, or smoothed and throttled?
As mentioned here, there is no guaranteed update frequency or angle increment. That's decided by the system due to multiple factors:
https://developer.apple.com/forums/thread/847866
Is it called with the initial context when the view appears, or only on change?
This modifier will be called with the initial context when the view reaches a hierarchy that has hinge data.
Is there a guaranteed angle range and precision?
There is not.
