SpatialTravel

A visionOS spatial computing prototype built for Apple Vision Pro. Explore travel destinations in an immersive 3D environment using gaze, gestures, and spatial interactions.

Built with SwiftUI, RealityKit, and the visionOS SDK.

Features

• Immersive 3D Globe — Interactive globe entity built with RealityKit, with destination pins placed using geographic coordinate mapping
• Spatial Gestures — Drag to rotate the globe, tap to select destinations via SpatialTapGesture and DragGesture targeted to entities
• Mixed Immersion — Seamless transitions between windowed and immersive spaces using ImmersiveSpace scenes
• Spatial UI Panels — NavigationSplitView with detail panels, ornament toolbar, and material-based card components
• Flight Path Visualization — Arc point generation between destinations using SLERP interpolation on a unit sphere
• Spatial Math Utilities — Geographic-to-cartesian conversion, haversine distance calculation, great circle arc generation with simd

Architecture

MVVM with a protocol-based service layer. State management via @Observable and SwiftUI @Environment.

SpatialTravel/
├── App/              # App entry point, scene definitions, observable state
├── Models/           # Data models (Destination, Coordinate, PriceRange)
├── Services/         # Protocol-based data layer with async interface
├── Utilities/        # Spatial math (SIMD3, SLERP, haversine)
└── Views/
    ├── Components/   # Reusable spatial card with hover/spring animations
    ├── Immersive/    # RealityKit immersive scene (globe, pins, gestures)
    └── Panels/       # 2D window panels (list, detail, custom FlowLayout)

Technical Highlights

Area	Implementation
Scene Management	WindowGroup + ImmersiveSpace with .mixed immersion style
State	@Observable class with environment injection
3D Rendering	RealityKit entities with PhysicallyBasedMaterial
Input Handling	SpatialTapGesture, DragGesture targeted to entities via InputTargetComponent
Collision	CollisionComponent with sphere shapes for spatial hit testing
Math	simd framework — SIMD3<Float>, quaternion rotation, SLERP interpolation
Layout	Custom FlowLayout conforming to SwiftUI Layout protocol
Testing	Unit tests for spatial math (coordinate conversion, haversine distance, arc generation)

Requirements

• Xcode 15.2+
• visionOS 1.0+ SDK
• Apple Vision Pro simulator or device

Context

Built during an R&D exploration of spatial computing UX patterns for travel applications — combining spatial interactions (gaze, gesture, hand tracking) with information display in mixed reality environments.