linelayer/polyline at main · LiuJianhuo/linelayer · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <title>polyline</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta http-equiv="X-UA-Compatible" content="IE=Edge">
    <style>
    body,
    html,
    #container {
        overflow: hidden;
        width: 100%;
        height: 100%;
        margin: 0;
        font-family: "微软雅黑";
    }
    ul li {
        list-style: none;
    }
    .btn-wrap {
        z-index: 999;
        position: fixed;
        bottom: 3.5rem;
        margin-left: 3rem;
        padding: 1rem 1rem;
        border-radius: .25rem;
        background-color: #fff;
        box-shadow: 0 2px 6px 0 rgba(27, 142, 236, 0.5);
    }
    .btn {
        width: 75px;
        height: 30px;
        float: left;
        background-color: #fff;
        color: rgba(27, 142, 236, 1);
        font-size: 14px;
        border:1px solid rgba(27, 142, 236, 1);
        border-radius: 5px;
        margin: 0 5px;
        text-align: center;
        line-height: 30px;
    }
    .btn:hover {
        background-color: rgba(27, 142, 236, 0.8);
        color: #fff;
    }
    </style>
    <script src="//api.map.baidu.com/api?type=webgl&v=1.0&ak=zLhopYPPERGtpGOgimcdKcCimGRyyIsh"></script>

    <script src="https://cdn.bootcss.com/vConsole/3.2.2/vconsole.min.js"></script>
    <script>
        var vConsole = new VConsole();
    </script>
</head>
<body>
    <div id="container"></div>
    <ul class="btn-wrap" style="z-index: 99;">
      <button onclick="addNewPolyline()">添加新polyline</button>
    </ul>
</body>
<script>
  var map = new BMapGL.Map('container');
  map.centerAndZoom(toPoint( [120.7459443387627, 31.694409602780304]), 12);
  map.enableScrollWheelZoom(true);

  function toPoint(cord) {
    return new BMapGL.Point(cord[0], cord[1])
  }

  const points = [
    [112, 30],
    [112, 33],
  ].map(p => {
    return toPoint(p)
  })

  const points1 = [
    [112.5, 30],
    [112.5, 33],
  ].map(p => {
    return toPoint(p)
  })


  var oldPolyline = new BMapGL.Polyline(points, {
      strokeColor: '#00BEBD',
      borderColor: '#009192',
      borderWeight: 0,
      strokeWeight: 7,
  })
  map.addOverlay(oldPolyline)

  function addNewPolyline () {
    map.removeOverlay(oldPolyline)
    const newPolyline = new BMapGL.Polyline(points, {
      strokeColor: '#00BEBD',
      borderColor: '#009192',
      borderWeight: 0,
      strokeWeight: 7,
      strokeTexture: {
        url: 'https://mapopen-pub-jsapigl.bj.bcebos.com/svgmodel/Icon_road_red_arrow.png',
        width: 16,
        height:64
      }
    })

    map.addOverlay(newPolyline)
    oldPolyline = newPolyline
  }

  setTimeout(() => {
    map.setViewport(points)
  }, 1000);

  </script>
</html>