屏幕坐标、固定坐标、惯性坐标转换

Cesium版本1.118.2

//屏幕坐标转固定坐标
let position = viewer.scene.pickPosition(movement.endPosition) //当前时间
const now = viewer.clock.currentTime 
//固定系坐标
const pointInFixed = position 
//转换阵
const fixedToIcrf = Cesium.Transforms.computeFixedToIcrfMatrix(now); 
//惯性系坐标
let pointInInertial = new Cesium.Cartesian3
if (Cesium.defined(fixedToIcrf)) {Cesium.Matrix3.multiplyByVector(fixedToIcrf, pointInFixed, pointInInertial);
}
//修改实体位置
entity.position = new Cesium.ConstantPositionProperty(position, Cesium.ReferenceFrame.INERTIAL)

//惯性系转固定系
function computeIcrfToFixedMatrix(date: JulianDate, result?: Matrix3): Matrix3;