原文链接及内容

原文链接：https://sandcastle.cesium.com/?src=CZML%20Point%20-%20Time%20Dynamic.html&label=All

效果如下图：

示例代码如下：这里对官方示例作了修改，添加了30倍速，这里光添加multiplier属性是不行的，需要同时加上interval和currentTime属性。

本文定义的CZML数据的语法请参考：

  1. https://github.com/AnalyticalGraphicsInc/czml-writer/wiki/CZML-Structure
  2. https://github.com/AnalyticalGraphicsInc/czml-writer/wiki/Packet
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const czml = [
  {
    id: "document",
    name: "CZML Point - Time Dynamic",
    version: "1.0",
    clock: {
      interval: "2012-08-04T16:00:00Z/2012-08-04T16:05:00Z",
      currentTime: "2012-08-04T16:00:00Z",
      multiplier: 30,//这里加了倍速
    },
  },
  {
    id: "point",
    availability: "2012-08-04T16:00:00Z/2012-08-04T16:05:00Z",
    position: {
      epoch: "2012-08-04T16:00:00Z",
      cartographicDegrees: [
        0, -70, 20, 150000, 
        100, -80, 44, 150000, 
        200, -90, 18, 150000, 
        300, -98, 52, 150000,
      ],
    },
    point: {
      color: {
        rgba: [255, 255, 255, 128],
      },
      outlineColor: {
        rgba: [255, 0, 0, 128],
      },
      outlineWidth: 3,
      pixelSize: 15,
    },
  },
];

const viewer = new Cesium.Viewer("cesiumContainer", {
  shouldAnimate: true,
});

viewer.dataSources.add(Cesium.CzmlDataSource.load(czml));