maptalks - 清空图层

清空图层
index.html
<!DOCTYPE html>
<html>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>gltf模型图层 - 清空图层</title>
  <style type="text/css">
    html,body{margin:0px;height:100%;width:100%}
    .container{width:100%;height:100%}
  </style>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/maptalks/dist/maptalks.css">
  <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/maptalks/dist/maptalks.min.js"></script>
  <script type="text/javascript" src="/gltf-examples/lib/maptalksgl.js"></script>
  <script type="text/javascript" src="/gltf-examples/lib/maptalks.gltf.js"></script>
  <body>
    
    <div id="map" class="container"></div>

    <script>
      var map = new maptalks.Map('map', {
        center: [-0.113049,51.498568],
        zoom: 14,
        pitch: 75,
        baseLayer: new maptalks.TileLayer('base', {
          urlTemplate: 'https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png',
          subdomains: ['a','b','c','d'],
          attribution: '&copy; <a href="http://osm.org">OpenStreetMap</a> contributors, &copy; <a href="https://carto.com/">CARTO</a>'
        })
      });
      var url = '../../../../resource/gltf/cube-animation/cube.gltf';
      var symbol = {
        url: url,
        rotation: [90, 0, 0],
        uniforms: {
          'baseColorFactor': [0.8, 0.0, 0.0, 1.0]
        }
      };
      
      var gltflayer = new maptalks.GLTFLayer('gltf').addTo(map);
      var position = map.getCenter();
      var markers = [];
      for (let i = 0; i < 3; i++) {
        for (let j = 0; j < 3; j++) {
          var gltfmarker = new maptalks.GLTFMarker(position.add(i * 0.01 - 0.015, j * 0.01 - 0.015), {
            symbol: symbol
          });
          markers.push(gltfmarker);
        }
      }
      
      gltflayer.addMarker(markers);
      
      setTimeout(() => {
        gltflayer.clear();
      }, 2000);

    </script>
  </body>
</html>