How to change COLLADA(.dae) file to SceneKit(.scn) file programmatically Swift - swift

Question

COLLADA(.dae) , SceneKit(.scn)
I am working with scenekit and problem is there is an admin who will upload .dae file to server and i'll get that link in app and by using code i have to show it on camera. In running app for .scn file url it is working fine but for .dae file url it is generating an error COLLADA files are not supported on this platform. so i want to convert .dae file to .scn file at run time. If anyone know any other source which can convert .dae file to .scn file kindly mention. By this source admin will upload .scn file to server after converting.

Answer 1

Finally solved thanks stackoverflow by using Model I/O swift concept
Step1#
// first need to download file to local directory
func downloadSceneTask(){
//1. Get The URL Of The SCN File
guard let url = URL(string: "Your_url") else { return }
//2. Create The Download Session
let downloadSession = URLSession(configuration: URLSession.shared.configuration, delegate: self, delegateQueue: nil)
//3. Create The Download Task & Run It
let downloadTask = downloadSession.downloadTask(with: url)
downloadTask.resume()
}
Step2#
Now i have url saved in my local device memory now i'll click anywhere in camera and load that local url in scene.
func addTapGestureToSceneView() {
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(didReceiveTapGesture(_:)))
sceneView.addGestureRecognizer(tapGestureRecognizer)
}
#objc func didReceiveTapGesture(_ sender: UITapGestureRecognizer) {
let location = sender.location(in: sceneView)
guard let hitTestResult = sceneView.hitTest(location, types: [.featurePoint, .estimatedHorizontalPlane]).first
else { return }
let results = self.sceneView.hitTest(location, types: .featurePoint)
// 2
guard let result = results.first else {
return
}
// 3
let translation = result.worldTransform.translation
self.translation = translation
anchor = ARAnchor(transform: hitTestResult.worldTransform)
sceneView.session.add(anchor: anchor!)
}
Step3#
My ViewDidLoad function be like
override func viewDidLoad() {
super.viewDidLoad()
sceneView.delegate = self
addTapGestureToSceneView()
downloadSceneTask()
}
Step4#
Add Protocol ARSCNViewDelegate
// Getting file from local directory and load
extension ViewController: ARSCNViewDelegate {
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
guard !(anchor is ARPlaneAnchor) else { return }
if let droneNode = loadModel() {
DispatchQueue.main.async {
node.addChildNode(droneNode)
}
}
}
func getDocumentsDirectory() -> URL {
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
let documentsDirectory = paths[0]
return documentsDirectory
}
// Loads The SCNFile From The Documents Directory
func loadModel() -> SCNNode? {
//1. Get The Path Of The Downloaded File
let downloadedScenePath = getDocumentsDirectory().appendingPathComponent("table.obj")
let asset = MDLAsset(url: downloadedScenePath)
let object = asset.object(at: 0)
let node = SCNNode(mdlObject: object)
//7. Add It To The Scene
return node
}
}