3D Tiles 3D Native Vector

<!--
  示例：三维原生矢量面
  说明：三块不规则地块用 extrudedHeight 挤出，半透明填充加白色描边
  核心逻辑：PolygonHierarchy 建面 → extrudedHeight 挤出 → withAlpha 半透明 → 描边
  依赖：CesiumJS 1.121 · jsDelivr CDN
-->
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta name="robots" content="noindex,follow">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>三维原生矢量面</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/cesium@1.121.0/Build/Cesium/Widgets/widgets.css">
<style>
  html,body{height:100%;margin:0}
  body{background:#0e1116;color:#e6e8ec;overflow:hidden;
       font:13px/1.6 -apple-system,"Segoe UI","PingFang SC",sans-serif}
  #c{height:100%}
  .tip{position:absolute;left:12px;top:12px;z-index:5;
       background:rgba(23,28,35,.9);border:1px solid #2a313b;border-radius:6px;
       padding:8px 12px;font-size:12px;color:#a2a9b6;max-width:320px;line-height:1.6}
  .cesium-viewer-bottom .cesium-widget-credits,.cesium-viewer-animationContainer,
  .cesium-viewer-timelineContainer{display:none!important}

</style>
</head>
<body>
<div id="c"></div>
<div class="tip">三块地块分别挤出 48、26、74 米。半透明让重叠区域仍能看出边界。</div>

<script src="https://cdn.jsdelivr.net/npm/cesium@1.121.0/Build/Cesium/Cesium.js"></script>
<script>
(function () {
  'use strict';

  var viewer = new Cesium.Viewer('c', {
    baseLayer: false,
    baseLayerPicker: false, geocoder: false, homeButton: false,
    sceneModePicker: false, navigationHelpButton: false,
    animation: false, timeline: false, fullscreenButton: false,
    infoBox: false, selectionIndicator: false
  });

  var scene = viewer.scene;
  scene.globe.baseColor = Cesium.Color.fromCssColorString('#1c2733');
  scene.backgroundColor = Cesium.Color.fromCssColorString('#0e1116');
  scene.skyBox.show = false;
  scene.sun.show = false;
  scene.moon.show = false;
  if (scene.skyAtmosphere) scene.skyAtmosphere.show = false;

  function block(coords, h, color) {
    viewer.entities.add({
      polygon: {
        hierarchy: new Cesium.PolygonHierarchy(Cesium.Cartesian3.fromDegreesArray(coords)),
        height: 0,
        extrudedHeight: h,
        material: Cesium.Color.fromCssColorString(color).withAlpha(0.75),
        outline: true,
        outlineColor: Cesium.Color.WHITE.withAlpha(0.45)
      }
    });
  }

  block([116.3862, 39.9040, 116.3894, 39.9036, 116.3902, 39.9058, 116.3870, 39.9064], 48, '#4d7cff');
  block([116.3908, 39.9032, 116.3938, 39.9036, 116.3944, 39.9056, 116.3912, 39.9060], 26, '#3ecf8e');
  block([116.3874, 39.9068, 116.3904, 39.9064, 116.3910, 39.9086, 116.3880, 39.9090], 74, '#ffb44d');

  viewer.camera.flyTo({
    destination: Cesium.Cartesian3.fromDegrees(116.3855, 39.9005, 900),
    orientation: { heading: Cesium.Math.toRadians(28), pitch: Cesium.Math.toRadians(-26), roll: 0 },
    duration: 0
  });
})();
</script>
</body>
</html>