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：
<!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>
时间： 2024-10-20 04:08:57