arcgis api for js 4.x 三维是不是只支持web 墨卡托的坐标系，能否支持2000投影坐标系

 https://developers.arcgis.com/javascript/latest/api-reference/esri-views-SceneView.html#viewing-modes 
Supported coordinate systems

The SceneView supports following coordinate systems in a global scene:

WGS84 or WebMercator
Noncached layers with any spatial reference since they will be reprojected to the scene spatial reference

In a local scene the following coordinate systems are supported:

Any Projected Coordinate System
Noncached layers with any spatial reference since they will be reprojected to the scene spatial reference

我用arcgis api for js 4.x加载天地图能够正常显示