ARSCNViewDelegate

ARSCNViewDelegate.swift

// MARK: - ARSCNViewDelegate

func renderer(_: SCNSceneRenderer, nodeFor anchor: ARAnchor) -> SCNNode? {
    guard let _ = anchor as? ARPlaneAnchor else { return nil }

    // We return a special type of SCNNode for ARPlaneAnchors
    return PlaneNode()
}

func renderer(_: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
    guard let planeAnchor = anchor as? ARPlaneAnchor,
        let planeNode = node as? PlaneNode else {
        return
    }
    planeNode.update(from: planeAnchor)
}

func renderer(_: SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor) {
    guard let planeAnchor = anchor as? ARPlaneAnchor,
        let planeNode = node as? PlaneNode else {
        return
    }
    planeNode.update(from: planeAnchor)
}