HUD & UI Interfaces

User interfaces in XR differ from traditional 2D screens. This section covers best practices for designing HUD elements, diegetic UI, and interactive menus.

1. Types of UI in XR

1.1 Diegetic UI

• UI elements integrated within the environment.
• Examples: Holographic displays, VR wrist menus.

1.2 Non-Diegetic UI

• Floating overlays separate from the 3D world.
• Examples: Health bars, notifications.

1.3 Spatial UI

• Fixed panels that exist within the scene.
• Examples: Interactive kiosks, floating buttons.

2. HUD Design Principles

• Minimalist Design: Avoid clutter to keep focus on the environment.
• Scalability: UI should adapt based on distance & user movement.
• Contrast & Readability: High contrast ensures visibility in different lighting conditions.

Well-designed HUDs and UI improve usability and immersion in XR.