https://blog.csdn.net/nmj2008/article/details/113687546
从经纬度转笛卡尔直角坐标系：
var origin = Cesium.Cartesian3.fromDegree3(-123.0744619, 44.0503706, height);
计算转向Matrix：
var modelMatrix = Cesium.Transforms.headingPitchRollToFixedFrame(origin, hpr);
原文：https://www.cnblogs.com/2008nmj/p/14387597.html