Czml Cones Cylinders

<!--
  示例：CZML 里用 cylinder 表示圆柱、圆锥与圆台
  说明：topRadius 为 0 得到圆锥，上下半径不等得到圆台，另一个用四元数摆平
  核心逻辑：cylinder.length / topRadius / bottomRadius + orientation.unitQuaternion
  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 圆锥与圆柱</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;
  scene.globe.enableLighting = true;

  var data = [
    { id: 'document', name: '圆锥与圆柱', version: '1.0' },
    {
      id: 'cylinder',
      position: { cartographicDegrees: [116.372, 39.900, 450] },
      cylinder: {
        length: 900,
        topRadius: 320,
        bottomRadius: 320,
        slices: 96,
        material: { solidColor: { color: { rgba: [77, 155, 255, 225] } } }
      }
    },
    {
      id: 'cone',
      position: { cartographicDegrees: [116.392, 39.900, 500] },
      cylinder: {
        length: 1000,
        topRadius: 0,
        bottomRadius: 420,
        slices: 96,
        material: { solidColor: { color: { rgba: [57, 192, 160, 225] } } }
      }
    },
    {
      id: 'frustum',
      position: { cartographicDegrees: [116.412, 39.900, 420] },
      cylinder: {
        length: 840,
        topRadius: 180,
        bottomRadius: 450,
        slices: 96,
        material: { solidColor: { color: { rgba: [240, 170, 70, 225] } } }
      }
    },
    {
      id: 'cylinder-flat',
      position: { cartographicDegrees: [116.432, 39.900, 700] },
      orientation: { unitQuaternion: [0, Math.SQRT1_2, 0, Math.SQRT1_2] },
      cylinder: {
        length: 900,
        topRadius: 240,
        bottomRadius: 240,
        slices: 96,
        material: { solidColor: { color: { rgba: [228, 92, 122, 225] } } }
      }
    },
    {
      id: 'labels',
      position: { cartographicDegrees: [116.402, 39.889, 0] },
      label: {
        text: '圆柱 · 圆锥 · 圆台 · 摆平',
        font: '500 13px "Microsoft YaHei", sans-serif',
        fillColor: { rgba: [220, 234, 250, 255] },
        disableDepthTestDistance: Number.POSITIVE_INFINITY
      }
    }
  ];

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

  viewer.camera.flyTo({
    destination: Cesium.Cartesian3.fromDegrees(116.402, 39.884, 2600),
    orientation: {
      heading: 0,
      pitch: Cesium.Math.toRadians(-25),
      roll: 0
    },
    duration: 0
  });
})();
</script>
</body>
</html>