Reactive Polling

Poll for changes to any value and trigger React re-renders when it changes.

Technique

Create a useReactive hook that uses useFrame to periodically check a selector function. When the value changes, update React state to trigger a re-render. Throttle with a configurable FPS.

Key Concepts

• Selector function returns the value to watch
• Compare with previous value to detect changes
• Only update state when value actually changes
• Throttle polling with useFrame's fps option
• Use sparingly for values that don't change frequently

Usage