Mode Motion Top ^new^ | Viewerframe

Viewerframe Mode — Motion Top

Purpose

Describe and specify the "viewerframe mode: motion top" interaction and behavior for a media viewer component, covering UX intent, visual motion, layout rules, animation parameters, accessibility, performance considerations, edge cases, and implementation notes.

Tracking speed set to high; frame is automatically tilting to follow vertical motion. Composition Guide: viewerframe mode motion top

02:14 AM: A lightning strike illuminating the entire coastline in a purple haze. Viewerframe Mode — Motion Top Purpose Describe and

Actionable Next Steps:

References (selected)

10. Testing checklist

• Visual: enter/exit animation, control reveal timing, overlay opacity
• Interaction: keyboard navigation, focus return, gesture dismissal
• Accessibility: screen reader announcements, reduced-motion behavior
• Performance: jank-free at 60fps on representative devices
• Edge cases: offscreen source, resize during animation, concurrent modals