30.绘制两个点

绘制两个点，需要用经纬度；把平面坐标转换为经纬度坐标：
var cartesian = viewer.scene.pickPosition(e.position);
result.points.push(cartesian);
var points = [];
result.points.map((item) => {
var cartographic = Cesium.Cartographic.fromCartesian(item);
var point = {};
point.x = Cesium.Math.toDegrees(cartographic.longitude);
point.y = Cesium.Math.toDegrees(cartographic.latitude);
point.z = cartographic.height;
points.push(point);
});