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cesium可视化空间数据

2024-09-03 18:24:25   220人阅读

1.多边形

我们要从经度和纬度列表中为美国怀俄明州添加一个多边形。（怀俄明被选中是因为它是一个简单的多边形。）我们可以复制并粘贴以下代码到Sandcastle中：

 

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<!DOCTYPE html>
<html>
<head>
  <!-- Use correct character set. -->
  <meta charset="utf-8">
  <!-- Tell IE to use the latest, best version. -->
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <!-- Make the application on mobile take up the full browser screen and disable user scaling. -->
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
  <title>Hello World!</title>
  <script src="../Cesium/Build/Cesium/Cesium.js"></script>
  <style>
 @import url(../Cesium/Build/Cesium/Widgets/widgets.css);
      html, body, #cesiumContainer {
          width: 100%; height: 100%; margin: 0; padding: 0; overflow: hidden;
      }
  </style>
</head>
<body>
  <div id="cesiumContainer"></div>
  <script>
var viewer = new Cesium.Viewer(‘cesiumContainer‘);
//Cesium.Viewer （容器)用于构建应用程序的基本构件。
var wyoming = viewer.entities.add({//添加实体到容器中，给实体命名为“Wyoming”
  name : ‘Wyoming‘,
  polygon : {//polygon是多边形  Cesium.PolygonHierarchy （positions, holes）
    hierarchy : Cesium.Cartesian3.fromDegreesArray([//hierarchy分层（位置，孔）
                              -109.080842,45.002073,
                              -105.91517,45.002073,
                              -104.058488,44.996596,
                              -104.053011,43.002989,
                              -104.053011,41.003906,
                              -105.728954,40.998429,
                              -107.919731,41.003906,
                              -109.04798,40.998429,
                              -111.047063,40.998429,
                              -111.047063,42.000709,
                              -111.047063,44.476286,
                              -111.05254,45.002073]),
    height : 0,
    material : Cesium.Color.RED.withAlpha(0.5),//使用红色，绿色，蓝色和alpha值指定的颜色，范围从0（无强度）到1.0（全强度）。
    outline : true,//几何轮廓存在
    outlineColor : Cesium.Color.BLACK//设置轮廓颜色为黑色
  }
});

viewer.zoomTo(wyoming);//zoomTo （target，offset）目标和偏移
  </script>
</body>
</html>

 

cesium可视化空间数据


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