Czml Reference Properties

<!--
  示例：CZML 属性引用
  说明：位置与颜色都写成 reference，改被引用对象一处，引用方一起变
  核心逻辑：position.reference 指 id#position，label.outlineColor.reference 指 id#label.outlineColor
  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 引用属性</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 start = Cesium.JulianDate.fromIso8601('2026-10-28T00:00:00Z');
  var stop = Cesium.JulianDate.addSeconds(start, 60, new Cesium.JulianDate());

  viewer.clock.startTime = start.clone();
  viewer.clock.stopTime = stop.clone();
  viewer.clock.currentTime = start.clone();
  viewer.clock.clockRange = Cesium.ClockRange.LOOP_STOP;
  viewer.clock.multiplier = 1;
  viewer.clock.shouldAnimate = true;

  var data = [
    {
      id: 'document',
      name: '引用属性',
      version: '1.0',
      clock: {
        interval: '2026-10-28T00:00:00Z/2026-10-28T00:01:00Z',
        currentTime: '2026-10-28T00:00:00Z',
        multiplier: 1,
        range: 'LOOP_STOP'
      }
    },
    {
      id: 'anchor',
      name: '被引用的锚点',
      availability: '2026-10-28T00:00:00Z/2026-10-28T00:01:00Z',
      position: {
        epoch: '2026-10-28T00:00:00Z',
        interpolationAlgorithm: 'LINEAR',
        interpolationDegree: 1,
        cartographicDegrees: [
          0,  116.360, 39.900, 400,
          30, 116.392, 39.918, 900,
          60, 116.360, 39.900, 400
        ]
      },
      point: {
        pixelSize: 12,
        color: { rgba: [255, 214, 102, 255] },
        outlineColor: { rgba: [255, 255, 255, 255] },
        outlineWidth: 2,
        disableDepthTestDistance: Number.POSITIVE_INFINITY
      },
      label: {
        text: 'anchor',
        font: '500 13px "Microsoft YaHei", sans-serif',
        fillColor: { rgba: [255, 255, 255, 255] },
        outlineColor: { rgba: [255, 214, 102, 255] },
        outlineWidth: 3,
        style: 'FILL_AND_OUTLINE',
        pixelOffset: { cartesian2: [18, 0] },
        horizontalOrigin: 'LEFT',
        disableDepthTestDistance: Number.POSITIVE_INFINITY
      }
    },
    {
      id: 'follow',
      name: '位置引用 anchor',
      availability: '2026-10-28T00:00:00Z/2026-10-28T00:01:00Z',
      position: { reference: 'anchor#position' },
      label: {
        text: 'position 引用 anchor',
        font: '500 13px "Microsoft YaHei", sans-serif',
        fillColor: { rgba: [255, 255, 255, 255] },
        outlineColor: { reference: 'anchor#label.outlineColor' },
        outlineWidth: 3,
        style: 'FILL_AND_OUTLINE',
        pixelOffset: { cartesian2: [0, -26] },
        disableDepthTestDistance: Number.POSITIVE_INFINITY
      }
    },
    {
      id: 'color-ref',
      name: '填充色引用 anchor 的描边色',
      availability: '2026-10-28T00:00:00Z/2026-10-28T00:01:00Z',
      position: { cartographicDegrees: [116.428, 39.902, 0] },
      polygon: {
        positions: {
          cartographicDegrees: [
            116.404, 39.884, 0,
            116.452, 39.886, 0,
            116.452, 39.922, 0,
            116.404, 39.920, 0
          ]
        },
        height: 0,
        material: {
          solidColor: { color: { reference: 'anchor#label.outlineColor' } }
        },
        outline: true,
        outlineColor: { rgba: [240, 240, 240, 200] }
      }
    },
    {
      id: 'caption',
      position: { cartographicDegrees: [116.392, 39.874, 0] },
      label: {
        text: '锚点一动，引用它的位置与颜色一起动',
        font: '500 13px "Microsoft YaHei", sans-serif',
        fillColor: { rgba: [216, 230, 246, 255] },
        disableDepthTestDistance: Number.POSITIVE_INFINITY
      }
    }
  ];

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

  viewer.camera.flyTo({
    destination: Cesium.Cartesian3.fromDegrees(116.392, 39.858, 16000),
    orientation: {
      heading: 0,
      pitch: Cesium.Math.toRadians(-44),
      roll: 0
    },
    duration: 0
  });
})();
</script>
</body>
</html>