Now I know I can create some classification area on 3Dtiles, any idea to make those area partly transparent?
You can do this using invert classification and setting an alpha as shown here:
https://sandcastle.cesium.com/index.html?src=Classification.html
Let me know if that works for you. What kind of app are you working on?
Well,thanks.But what I mean actually is only remove this classified area but not keep them（in this example, only treetops are removed）,any suggestes?
在 2020年3月24日星期二 UTC+8上午9:41:55，Omar Shehata写道：
Can you describe a bit more about your project/use case? There’s some discussion about using clipping planes to remove sections in 3D Tiles that may be useful here: https://groups.google.com/d/msg/cesium-dev/WMNe1e561JU/yaOgJZlEAgAJ