原文链接及内容

原文链接：https://sandcastle.cesium.com/?src=CZML%20Position%20Definitions.html&label=All

效果如下图：分别以经纬度、笛卡尔坐标以及弧度三种坐标形式表示的点。

示例代码如下：

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const czml = [
  {
    id: "document",
    name: "CZML Position Definitions",
    version: "1.0",
  },
  {
    id: "点1",
    name: "经纬度表示的点",
    position: {
      cartographicDegrees: [-111.0, 40.0, 150000.0],
    },
    point: {
      color: {
        rgba: [100, 0, 200, 255],
      },
      outlineColor: {
        rgba: [200, 0, 200, 255],
      },
      pixelSize: {
        number: 10,
      },
    },
  },
  {
    id: "点2",
    name: "笛卡尔坐标表示的点",
    position: {
      cartesian: [1216469.9357990976, -4736121.71856379, 4081386.8856866374],
    },
    point: {
      color: {
        rgba: [0, 100, 200, 255],
      },
      outlineColor: {
        rgba: [200, 0, 200, 255],
      },
      pixelSize: {
        number: 10,
      },
    },
  },
  {
    id: "点3",
    name: "以弧度表示的点",
    position: {
      cartographicRadians: [Math.PI, (3 * Math.PI) / 4, 150000],
    },
    point: {
      color: {
        rgba: [10, 200, 10, 255],
      },
      outlineColor: {
        rgba: [200, 0, 200, 255],
      },
      pixelSize: {
        number: 10,
      },
    },
  },
];

const viewer = new Cesium.Viewer("cesiumContainer");
viewer.dataSources.add(Cesium.CzmlDataSource.load(czml));