arrow

ViewController.swift

//
//  ViewController.swift
//  arrow
//
//  Created by MizushimaYusuke on 2018/01/07.
//  Copyright © 2018 MizushimaYusuke. All rights reserved.
//

import UIKit
import SceneKit
import ARKit

class ViewController: UIViewController, ARSCNViewDelegate {

    @IBOutlet var sceneView: ARSCNView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Set the view's delegate
        sceneView.delegate = self
        
        // Show statistics such as fps and timing information
        sceneView.showsStatistics = true
        sceneView.autoenablesDefaultLighting = true
        
        // Create a new scene
        let scene = SCNScene()
        
        // Set the scene to the view
        sceneView.scene = scene
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        
        // Create a session configuration
        let configuration = ARWorldTrackingConfiguration()

        // Run the view's session
        sceneView.session.run(configuration)
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        
        // Pause the view's session
        sceneView.session.pause()
    }
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        if let p = touches.first?.location(in: sceneView) {
            if let hit = sceneView.hitTest(p, types: .featurePoint).first {
                let position = SCNVector3(hit.worldTransform.columns.3.x, hit.worldTransform.columns.3.y + 0.02, hit.worldTransform.columns.3.z)
                
                let arrowSign = SCNNode()
                arrowSign.position = position
                sceneView.scene.rootNode.addChildNode(arrowSign)
                
                let path = UIBezierPath()
                path.move(to: CGPoint(x: 0, y: -0.01))
                path.addLine(to: CGPoint(x: 0, y:0.01))
                path.addLine(to: CGPoint(x: 0.01, y:0))
                path.close()
                let tri = SCNShape(path: path, extrusionDepth: 0.001)
                tri.firstMaterial?.diffuse.contents = UIColor(hue: 0.5, saturation: 0.5, brightness: 1, alpha: 1)
                let triNode = SCNNode(geometry: tri)
                triNode.position = SCNVector3(0.005, 0, 0)
                arrowSign.addChildNode(triNode)
                
                let bar = SCNBox(width: 0.04, height: 0.01, length: 0.001, chamferRadius: 0)
                bar.firstMaterial?.diffuse.contents = UIColor(hue: 0.5, saturation: 0.5, brightness: 1, alpha: 1)
                let barNode = SCNNode(geometry: bar)
                barNode.position = SCNVector3(-0.01, 0, 0)
                arrowSign.addChildNode(barNode)
                
                arrowSign.runAction(.rotateBy(x: 0, y: 4.0 * .pi, z: 0, duration: 3.0))
            }
        }
    }
}

http://lepetit-prince.net/ios/?p=7012

@mzsima Do you have a solution or suggestion that in sceneview how can we draw arrow in all direction using Two Points like Start vector and end point vector (draw arrow like Up side , Downside , left side up and down, right side up and down ) see attachment ,