Example of using HDAugumentedReality with iOS (Swift)

HDAugumentedRealityExampleUsage.swift

//
//  Created by Kordian Ledzion on 15.03.2017.
//  Copyright © 2017 Wolf Development. All rights reserved.
//
// Part of the code for HDAugumentedReality usage in one of my projects.
// It's showing AR pins with name and distance to locations loaded 

import UIKit
import CoreLocation

class CameraViewController: UIViewController {
    
    fileprivate var arViewController: ARViewController!
    var annotations = [ARAnnotation]()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        let places = DataAccess.access.getPlaces() //Fetching all the Places in the app
        //Converting Places to AR-friendly model
        for place in places{
            let annotation = ARModel(location: CLLocation(latitude: place.latitude, longitude: place.longitude), name: place.name)
            annotations.append(annotation)
        }
        //Setting up AR View
        arViewController = ARViewController() //Initializing view
        arViewController.dataSource = self //Source of data
        arViewController.maxDistance = 5000 //Max distance from the user
        arViewController.maxVisibleAnnotations = 30 //Self explanatory
        arViewController.headingSmoothingFactor = 0.05
        arViewController.setAnnotations(annotations) //Where are annotations
        self.present(arViewController, animated: true, completion: nil) //Show AR View
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    
    @IBAction func expandArCameraView(_ sender: UIBarButtonItem) {
        self.present(arViewController, animated: true, completion: nil)
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "showDetail" {
            if let dest = segue.destination as? DetailViewController, let sender = sender as? AnnotationView {
                dest.place = DataAccess.access.getPlaceFor(name: sender.titleLabel!.text!)
            }
        }
    }
    
}

//Extending CameraViewController by ARDataSource protocol to deliver custom views for annotations in AR view (just like regular annotations on map)
extension CameraViewController: ARDataSource{
    
    func ar(_ arViewController: ARViewController, viewForAnnotation: ARAnnotation) -> ARAnnotationView {
        let annotationView = AnnotationView()
        annotationView.annotation = viewForAnnotation
        annotationView.delegate = self
        annotationView.frame = CGRect(x: 0, y: 0, width: 150, height: 50)
        return annotationView
    }
    
}

//Extending CameraViewController by AnnotationViewDelegate to define action on touching the annotation in AR View
extension CameraViewController: AnnotationViewDelegate {
    func didTouch(annotationView: AnnotationView) {
        performSegue(withIdentifier: "showDetail", sender: annotationView)
        arViewController.closeButtonTap()
    }
}