import { useCallback, useRef } from "react"; import { Vector3 } from "three"; export function usePositionTracker() { const positionRef = useRef(null); const hasChanged = useCallback((position: Vector3) => { if (!positionRef.current) { positionRef.current = position.clone(); return true; } const isSamePosition = positionRef.current.x === position.x && positionRef.current.y === position.y && positionRef.current.z === position.z; if (!isSamePosition) { positionRef.current.copy(position); } return isSamePosition; }, []); return hasChanged; }