Czml Wall

<!--
  示例：CZML 沿折线拉起墙体
  说明：minimumHeights 与 maximumHeights 的长度要和 positions 的顶点数一致
  核心逻辑：wall.positions + 两组高度 → material 半透明 → CzmlDataSource.load
  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>CZML 墙体</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%}
  .cesium-viewer-bottom .cesium-widget-credits,.cesium-viewer-animationContainer,
  .cesium-viewer-timelineContainer{display:none!important}
</style>
</head>
<body>
<div id="c"></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.moon.show = false;
  if (scene.skyAtmosphere) scene.skyAtmosphere.show = false;

  var positions = [
    116.344, 39.884, 0,
    116.372, 39.906, 0,
    116.404, 39.918, 0,
    116.442, 39.906, 0,
    116.452, 39.884, 0
  ];
  var tops = [900, 1600, 2400, 1500, 800];
  var bottoms = [0, 200, 400, 200, 0];

  var data = [
    { id: 'document', name: '墙体', version: '1.0' },
    {
      id: 'wall',
      name: '边界墙',
      wall: {
        positions: { cartographicDegrees: positions },
        maximumHeights: tops,
        minimumHeights: bottoms,
        material: { solidColor: { color: { rgba: [77, 155, 255, 120] } } },
        outline: true,
        outlineColor: { rgba: [200, 226, 255, 200] }
      }
    },
    {
      id: 'topline',
      position: { cartographicDegrees: [116.404, 39.918, 2400] },
      polyline: {
        positions: {
          cartographicDegrees: [
            116.344, 39.884, 900,
            116.372, 39.906, 1600,
            116.404, 39.918, 2400,
            116.442, 39.906, 1500,
            116.452, 39.884, 800
          ]
        },
        width: 2,
        material: { polylineGlow: { color: { rgba: [255, 214, 102, 255] }, glowPower: 0.25 } }
      }
    },
    {
      id: 'caption',
      position: { cartographicDegrees: [116.404, 39.868, 0] },
      label: {
        text: '墙顶高度 900 / 1600 / 2400 / 1500 / 800 米',
        font: '500 13px "Microsoft YaHei", sans-serif',
        fillColor: { rgba: [216, 232, 250, 255] },
        disableDepthTestDistance: Number.POSITIVE_INFINITY
      }
    }
  ];

  Cesium.CzmlDataSource.load(data).then(function (ds) {
    viewer.dataSources.add(ds);
  });

  viewer.camera.flyTo({
    destination: Cesium.Cartesian3.fromDegrees(116.398, 39.856, 22000),
    orientation: {
      heading: 0,
      pitch: Cesium.Math.toRadians(-32),
      roll: 0
    },
    duration: 0
  });
})();
</script>
</body>
</html>