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                        - <!DOCTYPE html>
 - <html lang="en">
 - 
 - <head>
 -   <meta charset="utf-8">
 -   <meta name="viewport" content="width=device-width,initial-scale=1.0">
 -   <title>dc-example</title>
 -   <script src='/libs/dc-sdk/dc.min.js'></script>
 -   <script src='../turf.min.js'></script>
 -   <link href='/libs/dc-sdk/dc.min.css' type='text/css' rel='stylesheet'>
 -   <link href='../index.css' type='text/css' rel='stylesheet'>
 - </head>
 - 
 - <body>
 - 
 - <div id="viewer-container" class="viewer-container"></div>
 - <script>
 -   let viewer = undefined
 - 
 -   function initViewer() {
 -     viewer = new DC.Viewer('viewer-container')
 -     let baseLayer = DC.ImageryLayerFactory.createImageryLayer(DC.ImageryType.AMAP,{
 -       style:'img',
 -       crs:'WGS84'
 -     })
 -     viewer.addBaseLayer( baseLayer)
 -     let layer = new DC.VectorLayer('layer')
 -     viewer.addLayer(layer)
 -     let polygon = new DC.Polygon("120.71259021075333,31.22148081085083;120.71611354431036,31.221447256684566;120.7140691869497,31.21875584696343")
 -     polygon.setStyle({
 -       zIndex:1,
 -       material:DC.Color.YELLOW
 -     })
 -     layer.addOverlay(polygon)
 -     let coords = DC.GeoTools.polygonBuffer("120.71259021075333,31.22148081085083;120.71611354431036,31.221447256684566;120.7140691869497,31.21875584696343",150)
 -     let buffer = new DC.Polygon(coords)
 -     buffer.setStyle({
 -       material:DC.Color.RED.withAlpha(0.4)
 -     })
 -     layer.addOverlay(buffer)
 -     viewer.flyTo(layer)
 -   }
 -   DC.ready({
 -     baseUrl:'../libs/dc-sdk/resources/',
 -     turf:window.turf
 -   }).then(initViewer)
 - </script>
 - </body>
 - </html>
 - 
 - 
 - 
 - 
 - 
 - 
 - 
 
 
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