Send ARKit camera position and quaternion on OSC (SwiftOSC) - ios

Question

I'm currently starting to learn Swift to develop an app as a part of my research. I'm ok with python but I can't seem to wrap my head around using Swift and Xcode. I've been able to print accelerometer data on screen, and send values over OSC. However, I need help:
Find ARKit camera position (X,Y,Z),
Send these values over OSC.
I've set up the ARSession and set the ARDelegate etc, and set up a function to get the position values from the transform matrix, but I cannot seem to be able to display any data on screen and send over OSC. The ARKIT code is below. The first code break is just an example of using SwiftOSC, it should be easy to implement once I am able to get the ARKit data.
I know that this may be pretty simple but I can't get it working! If anyone is willing to help me doing that, it would be amazing. And if someone is willing to work with me on Zoom or Meets, my thesis grant will be able to give honorarium compensation for your time.
Thanks in advance!
override func viewDidAppear(_ animated: Bool) {
motionManager.accelerometerUpdateInterval = (1/60)
motionManager.startAccelerometerUpdates(to: OperationQueue.current!) {(data, error)in
if let myData = data{
let x = myData.acceleration.x
let y = myData.acceleration.y
let z = myData.acceleration.z
self.xAccel.text = "x \(Double(x))"
let message = OSCMessage(OSCAddressPattern("/accelx"), Double(x))
client.send(message)
let message_y = OSCMessage(OSCAddressPattern("/accely"), Double(y))
client.send(message_y)
let message_z = OSCMessage(OSCAddressPattern("/accelz"), Double(z))
client.send(message_z)
}
}
}
However, I can't seem to access camera position using ARKit:
import UIKit
import SceneKit
import ARKit
extension ViewController: ARSessionDelegate {
func session(_ session: ARSession, didUpdate frame: ARFrame) {
let transform = frame.camera.transform
var position = transform.columns.3
print(position.x, position.y, position.z) //Get (x,y,z) and print
}
}
class ViewController: UIViewController, ARSCNViewDelegate {
#IBOutlet var sceneView: ARSCNView!
override func viewDidLoad() {
super.viewDidLoad()
// Set the view's delegate
sceneView.delegate = self
// Show statistics such as fps and timing information
sceneView.showsStatistics = true
// Create a new scene
let scene = SCNScene(named: "art.scnassets/ship.scn")!
// Set the scene to the view
sceneView.scene = scene
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// Create a session configuration
let configuration = ARWorldTrackingConfiguration()
// Run the view's session
sceneView.session.run(configuration)
// How to call function and assign position.[x,y,z], to variable to read on screen and send on OSC? So far I can't see any data at all.
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
// Pause the view's session
sceneView.session.pause()
}
It always returns zero, or nothing at all.