AR_Lens

When an object is detected , ARkit will call the

renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor). 

And the latency detection is in this function. Also, ARkit will update the position of the object by calling

renderer(_ renderer: SCNSceneRenderer, willUpdate node: SCNNode, for anchor: ARAnchor)

Both function is under

SpokenWord/ViewController.swift