鼠标移动获取经纬度

// 注册鼠标移动事件
viewer.canvas.addEventListener("mousemove", function (e) {
  var cartesian = viewer.scene.camera.pickEllipsoid(e);
  if (cartesian) {
    // 转换为地理坐标系
    var cartographic = Cesium.Cartographic.fromCartesian(cartesian);
    MouseInfo.longitude = Cesium.Math.toDegrees(cartographic.longitude);
    MouseInfo.latitude = Cesium.Math.toDegrees(cartographic.latitude);
    MouseInfo.height = Math.ceil(
      viewer.scene.camera.positionCartographic.height
    ); 
  }
});