maptalks - Composite symbol

Composite symbol

index.html

<!DOCTYPE html>
<html>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Geometry Styles - Composite symbol</title>
  <style type="text/css">
    html,body{margin:0px;height:100%;width:100%}
    .container{width:100%;height:100%}
  </style>
  <link rel="stylesheet" href="https://unpkg.com/maptalks/dist/maptalks.css">
  <script type="text/javascript" src="https://unpkg.com/maptalks/dist/maptalks.min.js"></script>
  <body>

    <div id="map" class="container"></div>
    <script>

      var map = new maptalks.Map('map', {
        center: [-0.113049,51.49856],
        zoom: 14,
        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 layer = new maptalks.VectorLayer('vector').addTo(map);

      //composite symbol, the latter is on the top
      var marker = new maptalks.Marker(
        map.getCenter(),
        {
          'symbol' : [
            {
              'markerType' : 'ellipse',
              'markerFill' : '#fff',
              'markerFillOpacity' : 1,
              'markerWidth' : 20,
              'markerHeight' : 20,
              'markerLineWidth' : 0
            },
            {
              'markerType' : 'ellipse',
              'markerFill' : '#1bc8ff',
              'markerFillOpacity' : 0.9,
              'markerWidth' : 55,
              'markerHeight' : 55,
              'markerLineWidth' : 0
            },
            {
              'markerType' : 'ellipse',
              'markerFill' : '#0096cd',
              'markerFillOpacity' : 0.8,
              'markerWidth' : 91,
              'markerHeight' : 91,
              'markerLineWidth' : 0
            },
            {
              'markerType' : 'ellipse',
              'markerFill' : '#0096cd',
              'markerFillOpacity' : 0.3,
              'markerWidth' : 130,
              'markerHeight' : 130,
              'markerLineWidth' : 0
            },
            {
              'markerType' : 'ellipse',
              'markerFill' : '#0096cd',
              'markerFillOpacity' : 0.2,
              'markerWidth' : 172,
              'markerHeight' : 172,
              'markerLineWidth' : 0
            }
          ]
        }
      ).addTo(layer);

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

var map = new maptalks.Map('map', {
  center: [-0.113049, 51.49856],
  zoom: 14,
  baseLayer: new maptalks.TileLayer('base', {
    urlTemplate: 'https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png',
    subdomains: ["a", "b", "c", "d"],
    attribution: '© <a href="http://osm.org">OpenStreetMap</a>  contributors, © <a href="https://carto.com/">CARTO</a> '
  })
});

var layer = new maptalks.VectorLayer('vector').addTo(map);

//composite symbol, the latter is on the top
var marker = new maptalks.Marker(
  map.getCenter(), {
    'symbol': [{
      'markerType': 'ellipse',
      'markerFill': '#fff',
      'markerFillOpacity': 1,
      'markerWidth': 20,
      'markerHeight': 20,
      'markerLineWidth': 0
    }, {
      'markerType': 'ellipse',
      'markerFill': '#1bc8ff',
      'markerFillOpacity': 0.9,
      'markerWidth': 55,
      'markerHeight': 55,
      'markerLineWidth': 0
    }, {
      'markerType': 'ellipse',
      'markerFill': '#0096cd',
      'markerFillOpacity': 0.8,
      'markerWidth': 91,
      'markerHeight': 91,
      'markerLineWidth': 0
    }, {
      'markerType': 'ellipse',
      'markerFill': '#0096cd',
      'markerFillOpacity': 0.3,
      'markerWidth': 130,
      'markerHeight': 130,
      'markerLineWidth': 0
    }, {
      'markerType': 'ellipse',
      'markerFill': '#0096cd',
      'markerFillOpacity': 0.2,
      'markerWidth': 172,
      'markerHeight': 172,
      'markerLineWidth': 0
    }]
  }
).addTo(layer);