跳到主要内容
版本：9.1.0

可视域分析

在地图场景中指定位置、指定参数创建可视域分析，支持二维地图、fill-extrusion建筑图层、模型图层、3DTiles图层同步分析

showshow

   <!DOCTYPE html>
   <html>
   <head>
       <meta charset="utf-8"/>
       <title>可视域分析</title>
       <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no"/>
       <style>
           body {
               margin: 0;
               padding: 0;
           }

           #map {
               position: absolute;
               top: 0;
               bottom: 0;
               width: 100%;
           }

            .btn-group {
                   position: absolute;
                   top: 20px;
                   left: 20px;
               }
       </style>
       <script src="https://delivery.mapmost.com/cdn/sdk/webgl/v9.1.0/mapmost-webgl-min.js"></script>
   </head>
   <body>
   <div id="map"></div>
    <div class="btn-group">
        <button onClick="add()">添加可视域分析</button>
        <button onClick="remove()">删除可视域分析</button>
    </div>
   <script>
      var map = new mapmost.Map({
       container: 'map',  
       style: "<your style url>", 
       center: [120.75007613619039,31.312762277059107], 
       zoom: 16, 
       pitch: 60,
       userId: '***', // 授权码  
     });

    let analysis;

    function add() {
        analysis = new mapmost.ViewshedAnalysis(map);

        // 分析参数
        let opt = {
            position: [120.7669270700174, 31.30360462347376, 800],
            pitch: 60,
            bearing: 57,
            fovX: 90,
            fovY: 45,
            distance: 3000,
            visibleColor: "#007f00",
            visibleOpacity: 0.3,
            invisibleColor: "#990000",
            invisibleOpacity: 0.5,
            wireframeColor: "#ffff00",
            wireframeDisplay: true,
            wireframeDensity: 8,
        }

        // 开始分析
        analysis.analyse(opt);
    }

    function remove() {
        // 清除分析结果，保留分析实例，可更新分析结果
        analysis.clear();
    }
    
   </script>
   </body>
   </html>