import { useState } from 'react'; const useDistance = () => { const [distance, setDistance] = useState(0); const onDistance = (data: number[][]) => { if ((window as any).AMap && data && data.length >= 2) { const pointArr = data.map((point) => new (window as any).AMap.LngLat(point[0], point[1])); const distanceOfLine = (window as any).AMap.GeometryUtil.distanceOfLine(pointArr); setDistance(Math.round(distanceOfLine)); } }; return { distance, onDistance, }; }; export default useDistance;