@uiw/react-baidu-map-polygon

^{使用 我的应用 也是一种 支持 我的方式：}

Polygon 多边形组件
===


表示一个多边形覆盖物。

``jsx
import { Polygon, usePolygon } from '@uiw/react-baidu-map';
// 或者单独安装使用
import Polygon, { usePolygon } from '@uiw/react-baidu-map-polygon';
`

$3

`jsx mdx:preview
import React, { useState } from 'react';
import { Map, Polygon, APILoader } from '@uiw/react-baidu-map';

const Example = () => {
const [enableEditing, setEnableEditing] = useState(false);
const [strokeOpacity, setStrokeOpacity] = useState(0.9);
return (
<>
setEnableEditing(!enableEditing)}>{enableEditing ? '取消编辑' : '编辑'}
setStrokeOpacity(0.7)}>透明度0.7
setStrokeOpacity(0.2)}>透明度0.2


);
}

const Demo = () => (


polygon, setPolygon, path, setPath

`jsx mdx:preview
import React from 'react';
import { useRef, useEffect, useState } from 'react';
import { Map, Provider, useMap, APILoader, usePolygon } from '@uiw/react-baidu-map';

const Example = () => {
const [enableEditing, setEnableEditing] = useState(false);
const [strokeOpacity, setStrokeOpacity] = useState(0.9);
const divElm = useRef(null);
const { setContainer, map } = useMap({
zoom: 13,
center: '北京',
widget: ['GeolocationControl', 'NavigationControl']
});
const { polygon } = usePolygon({ map,
enableEditing, strokeOpacity,
path: [
{ lng: 116.387112, lat: 39.920977 },
{ lng: 116.385243, lat: 39.913063 },
{ lng: 116.394226, lat: 39.917988 },
{ lng: 116.401772, lat: 39.921364 },
{ lng: 116.41248, lat: 39.927893 },
],
});
usePolygon({ map,
path: [
{ lng: 116.399, lat: 39.910 },
{ lng: 116.405, lat: 39.920 },
{ lng: 116.423493, lat: 39.907445 },
],
});
useEffect(() => {
if (divElm.current) {
setContainer(divElm.current);
}
});
useEffect(() => {
if (map) {
// 启用滚轮放大缩小，默认禁用
map.enableScrollWheelZoom();
}
}, [map]);

useEffect(() => {
if (map && polygon) {
if (enableEditing) {
polygon.setFillColor('red');
polygon.enableEditing();
} else {
polygon.setFillColor('transparent');
polygon.disableEditing();
}
}
}, [enableEditing]);

useEffect(() => {
if (map && polygon) {
polygon.setStrokeOpacity(strokeOpacity);
}
}, [strokeOpacity]);

return (
<>
setEnableEditing(!enableEditing)}>{enableEditing ? '取消编辑' : '编辑'}
setStrokeOpacity(0.7)}>透明度0.7
setStrokeOpacity(0.2)}>透明度0.2