An iOS app that uses LiDAR to capture 3D room scans, colorizes them in real time, and lets users geotag and share scans on a collaborative map via CloudKit.
 Map View |
 3D Scan Detail |
 Library |
 Explore |
- LiDAR Scanning — Capture 3D mesh geometry using ARKit's scene reconstruction
- Real-Time Mesh Colorization — Projects camera textures onto mesh vertices using camera-space projection with bilinear interpolation
- Keyframe Pipeline — Background JPEG encoding with nearest-neighbor eviction to maintain spatial diversity across 50 keyframes
- Geotag & Publish — Tag scans with GPS coordinates and publish to CloudKit's public database
- Explore Map — Browse and download scans published by other users via an interactive MapKit view
- 3D Viewer — Load and inspect scans in a SceneKit-based viewer
| Layer | Technology |
|---|---|
| UI | SwiftUI |
| AR | ARKit, RealityKit |
| 3D Rendering | SceneKit |
| Cloud | CloudKit (public database) |
| Maps | MapKit, CoreLocation |
| Concurrency | GCD, async/await |
AnchorMap/
├── ARManager.swift # AR session, location services
├── ARWrapper.swift # SwiftUI ↔ ARKit bridge, LiDAR capture
├── Mesh+Ext.swift # Mesh colorization & vertex processing
├── Models/
│ ├── CloudKitManager.swift # CloudKit publish/fetch/download
│ ├── ScanRecord.swift # Local scan data model
│ └── PublicScan.swift # Public scan model
├── Views/
│ ├── MapView.swift # Geotagged scan map
│ ├── ExploreView.swift # Browse public scans
│ └── ScanDetailView.swift # Scan detail & 3D viewer
├── ContentView.swift
└── FetchModelView.swift
- iOS 17.0+
- iPhone/iPad with LiDAR sensor (iPhone 12 Pro or later)
Download on the App Store