AR / VR 🥽🌐

1. What is AR & VR?

AR (Augmented Reality) overlays digital objects on the real world. VR (Virtual Reality) creates a fully virtual world.

2. AR vs VR

AR 🟢 → Real world + digital objects
VR 🔵 → Fully digital world

AR example:
- Pokémon GO 📱

VR example:
- Meta Quest games 🥽

3. Devices Used

VR Headsets 🥽 → Meta Quest, HTC Vive
AR Devices 📱 → Mobile cameras, AR glasses
Controllers 🎮 → hand tracking, motion input

4. Core AR/VR Concepts

Tracking 📍 → head + hand movement
Rendering 🎨 → real-time 3D graphics
Latency ⏱️ → delay must be very low
Immersion 🌐 → feeling “inside” the game

5. VR Game Systems

Head Tracking 👁️
Hand Tracking ✋
Room Scale Movement 🚶
360° Environment 🌍

6. AR Systems

Camera input 📷
Object detection 🧠
World mapping 🗺️
Overlay rendering 🎨

7. AR/VR in Game Engines

Unity 🎮 → AR Foundation + XR Toolkit
Unreal 🎮🔥 → VR templates + OpenXR
WebXR 🌐 → browser-based AR/VR

8. Real Uses of AR/VR

Gaming 🎮
Education 📚
Medical training 🏥
Virtual tours 🌍
Military simulation 🎯