Gaode draws polygons (mouse tool - draw overlay)

https://lbs.amap.com/demo/javascript-api/example/mouse-operate-map/mouse-draw-overlayers

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<!-- 官方示例 -->
<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="chrome=1">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
    <link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css" type="text/css">
    <style>
      html,body,#container{
      
      
        height: 100%
      }
      .input-item{
      
      
        height: 2.2rem;
      }
      .btn{
      
      
        width: 6rem;
        margin: 0 1rem 0 2rem;
      }
      .input-text{
      
      
        width: 4rem;
        margin-right:1rem;
      }
    </style>
    <title>鼠标工具绘制</title>
  </head>
  <body>
    <div id='container'></div>
    <div class='info'>操作说明：圆和矩形通过拖拽来绘制，其他覆盖物通过点击来绘制</div>
    <div class="input-card" style='width: 24rem;'>
        <div class="input-item">
          <input type="radio" name='func' checked="" value='marker'><span class="input-text">画点</span>
          <input type="radio" name='func' value='polyline'><span class="input-text">画折线</span>
          <input type="radio" name='func' value='polygon'><span class="input-text" style='width:5rem;'>画多边形</span>
        </div>
        <div class="input-item">
          <input type="radio" name='func' value='rectangle'><span class="input-text">画矩形</span>
          <input type="radio" name='func' value='circle'><span class="input-text">画圆</span>
        </div>
        <div class="input-item">
            <input id="clear" type="button" class="btn" value="清除" />
          <input id="close" type="button" class="btn" value="关闭绘图" />
        </div>
    </div>
    <script src="https://webapi.amap.com/maps?v=1.4.15&key=您申请的key值&plugin=AMap.MouseTool"></script>
    <script type="text/javascript">
    var map = new AMap.Map('container',{
      
      
        zoom:14
    });

    var mouseTool = new AMap.MouseTool(map); 
    //监听draw事件可获取画好的覆盖物
    var overlays = [];
    mouseTool.on('draw',function(e){
      
      
        overlays.push(e.obj);
    }) 
    
    function draw(type){
      
      
      switch(type){
      
      
        case 'marker':{
      
      
            mouseTool.marker({
      
      
              //同Marker的Option设置
            });
            break;
        }
        case 'polyline':{
      
      
            mouseTool.polyline({
      
      
              strokeColor:'#80d8ff'
              //同Polyline的Option设置
            });
            break;
        }
        case 'polygon':{
      
      
            mouseTool.polygon({
      
      
              fillColor:'#00b0ff',
              strokeColor:'#80d8ff'
              //同Polygon的Option设置
            });
            break;
        }
        case 'rectangle':{
      
      
            mouseTool.rectangle({
      
      
              fillColor:'#00b0ff',
              strokeColor:'#80d8ff'
              //同Polygon的Option设置
            });
            break;
        }
        case 'circle':{
      
      
            mouseTool.circle({
      
      
              fillColor:'#00b0ff',
              strokeColor:'#80d8ff'
              //同Circle的Option设置
            });
            break;
        }
      }
    }
    var radios = document.getElementsByName('func');
    for(var i=0;i<radios.length;i+=1){
      
      
        radios[i].onchange = function(e){
      
      

          draw(e.target.value)
        }
    }
    draw('marker')

    document.getElementById('clear').onclick = function(){
      
      
        map.remove(overlays)
        overlays = [];
    }  
    document.getElementById('close').onclick = function(){
      
      
        mouseTool.close(true)//关闭，并清除覆盖物
        for(var i=0;i<radios.length;i+=1){
      
      
            radios[i].checked = false;
        }
    }
    </script>
  </body>
</html>

// 自定义封装画多边形方法
    linePolygon() {
    
    
      var mouseTool = new AMap.MouseTool(map);
      console.log(mouseTool, 'mouseTool');
      let that = this

      // 来个demo, 鼠标在地图上画了之后获取画的图形的坐标，在这之前需要实例化mouseTool.polygon()方法
      this.AMap.Event.addListener(mouseTool, 'draw', function (e) {
    
    
        console.log(e, 'eee');
        let arr = e.obj.getPath();//获取路径坐标
        // arr 为多边形的顶点坐标
        console.log(arr, 'arr');
        
      //监听draw事件可获取画好的覆盖物
      // var overlays = [];
      // mouseTool.on('draw', function (e) {
    
    
      //   console.log(e.obj._opts.path, 'e');
      //   overlays.push(e.obj);
      // })
      // console.log(overlays, 'overlays');

      function draw(type) {
    
    
        switch (type) {
    
    
          case 'polygon': {
    
    
            mouseTool.polygon({
    
    
              fillColor: '#00b0ff',
              strokeColor: '#80d8ff'
              //同Polygon的Option设置
            });
            break;
          }
          case 'circle': {
    
    
            mouseTool.circle({
    
    
              fillColor: '#00b0ff',
              strokeColor: '#80d8ff'
              //同Circle的Option设置
            });
            break;
          }
        }
      }
      draw('polygon')
      // document.getElementById('clear').onclick = function () {
    
    
      //   window.map.remove(overlays)
      //   overlays = [];
      // }
      document.getElementById('close').onclick = function () {
    
    
        mouseTool.close(true)//关闭，并清除覆盖物
      }
    },

Gaode draws polygons (mouse tool - draw overlay)

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