2022-06-27：cesium坐标

1、cesium坐标——笛卡尔转经纬度

    const cartesian = {
        x: -2385475.526887967,
        y: 5390811.453960502,
        z: 2426849.2019715696
      }
      const cartographic = Cesium.Cartographic.fromCartesian(cartesian)
      const longitudeString = Cesium.Math.toDegrees(cartographic.longitude)
      const latitudeString = Cesium.Math.toDegrees(cartographic.latitude)
      const heightString = cartographic.height
      console.log(longitudeString, latitudeString, heightString)

2、经纬度转笛卡尔

      var origin = Cesium.Cartesian3.fromDegrees(113.86975855, 22.51165379, 0)