How to load a usdz model and textures from a remote server using ARKit?

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How to load a usdz model and textures from a remote server using ARKit?

As in the example below:

let myURL = NSURL(string: "https://mywebsite.com/vase.scn")

guard let scene = try? SCNScene(url: myURL! as URL, options: nil) else {
    return
}

let node = scene.rootNode.childNode(withName: "vase", recursively: true)

let transform = queryResult.worldTransform
let thirdColumn = transform.columns.3
node!.position = SCNVector3(thirdColumn.x, thirdColumn.y, thirdColumn.z)
self.sceneView.scene.rootNode.addChildNode(node!)
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Muhammed Emin Aydın On BEST ANSWER

I found solution as in the below:

  1. Download model and save

    func downloadModel() {
    
        guard let url = URL(url: originalURL) else { return }
        let urlSession = URLSession(configuration: .default, delegate: self, delegateQueue: OperationQueue())
        let downloadTask = urlSession.downloadTask(with: url)
        downloadTask.resume()
    }
    
    extension ARViewController: URLSessionDownloadDelegate {
    
         public func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {          print("locationUrl:", location.path)
    
          // create destination URL with the original file name
             guard let url = downloadTask.originalRequest?.url else { return }
             let documentsPath = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)[0]
            let destinationURL = documentsPath.appendingPathComponent(url.lastPathComponent)
    
          // delete original copy
             try? FileManager.default.removeItem(at: destinationURL)
    
          // copy from temp to Document
      do {
            try FileManager.default.copyItem(at: location, to: destinationURL)
            self.originalURL = destinationURL
            print("originalURL:", originalURL!.path)
    
       } catch let error {
        print("Copy Error: \(error.localizedDescription)")
        }
      }
    }
    
  2. Load usdz model and textures

    func addItem(queryResult: ARRaycastResult) {
    
        let url = URL(string: originalURL!.path)
        let mdlAsset = MDLAsset(url: url!)
        mdlAsset.loadTextures()
        let scene = SCNScene(mdlAsset: mdlAsset)
        let node = scene.rootNode.childNode(withName: "model", recursively: true)
        let transform = queryResult.worldTransform
        let thirdColumn = transform.columns.3
        node!.position = SCNVector3(thirdColumn.x, thirdColumn.y, thirdColumn.z)
        self.sceneView.scene.rootNode.addChildNode(node!)
    
    }