Using RealityKit and SceneKit together - swift

Question

I am trying to create an app where I can use the depth functionalities of RealityKit but the AR drawing capabilities from SceneKit. What I would like to do, is recognize an object and place a 3d model over it (which works already).
When that is completed I would like the user to be able to draw on top of that 3d model (which works fine with SceneKit, but makes the 3d model jitter). I found SCNLine to do the drawing, but since it uses SceneKit I can not use it in the ARView of RealityKit.
I have seen this already, but it does not cover fully what I would like.
Is it possible to use both?

Answer 1

SceneKit and RealityKit are incompatible due to a complete dissimilarity – difference in scenes' hierarchy, difference in renderer and physics engines, difference in component content. What's stopping you from using SceneKit + ARKit (ARSCNView class)?
ARKit 6.0 has a built-in Depth API (the same API is available in RealityKit) that uses a LiDAR scanner to more accurately determine distances in a surrounding environment, allowing us to use plane detection, raycasting and object occlusion more efficiently.
For that, use sceneReconstruction instance property and ARMeshAnchors.
import ARKit
import SceneKit
class ViewController: UIViewController {
#IBOutlet var sceneView: ARSCNView!
override func viewDidLoad() {
super.viewDidLoad()
sceneView.scene = SCNScene()
sceneView.delegate = self
let config = ARWorldTrackingConfiguration()
config.sceneReconstruction = .mesh
config.planeDetection = .horizontal
sceneView.session.run(config)
}
}
Delegate's method:
extension ViewController: ARSCNViewDelegate {
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode,
for anchor: ARAnchor) {
guard let meshAnchor = anchor as? ARMeshAnchor else { return }
let meshGeo = meshAnchor.geometry
// logic ...
node.addChildNode(someModel)
}
}
P. S.
This post will be helpful for you.