This document describes a proposed augmented reality (AR) application called Line Quest that uses ARKit and SceneKit. It would allow users to see virtual objects placed in the real world using their device's location services and compass. Key aspects include aligning the virtual space to the real world using automatic orientation, placing objects at relative distances and directions from the user, and addressing challenges of integrating location data with 3D frameworks that have different coordinate systems. A backend server and admin tool built with Go and Vue.js are also proposed.

1. LINE QUEST
MVP by
Ratushnyy Dmitry, 大西裕介, Aboudou Mathias, 馬見誠

2. AR
- ARKit + SceneKit
- Real scale: 1 point in SceneKit = 1 meter in real world
- Auto align the virtual space with real world’s direction using compass
- If you put an object 1 points next to your current position along -Z axis it will appear 1 meter to
your north.
- Get the device’s location and calculate relative distance and direction of and
where to put them in virtual space.

3. AR Challenges
- I’ve never worked on ARKit or SceneKit or any 3D frameworks
- CoreLocation and SceneKit have different coordinate and direction system
(lat-long vs. XYZ axis, 0-360° vs. Euler Angles)
- Settings position, rotation or scale in SceneKit use 4x4 matrix.
- Indoor GPS is very very inaccurate.

4. SERVER SIDE
Web
Server
(Go)

5. ADMIN TOOL
Vue JS