The bottom layer with primitive can not create a perfect coincidence

Hi dear guys,

our team is working for a real lake project recently,we create a lake primitive and put it on the bottom layer,but the question is that the lake and layer can not coincidence perfectly,especially on 3D from different perspectives

we have no idea why does this happend.

Can you help and give us some suggestions?

thank you very much!

some pictiures is bellow:

kun jiang

Maybe the digital elevation data used by your terrain provider (maybe CesiumTerrainProvider) has a different creation date of your imageLayer: a lake changes during a year (winter vs summer).

I fear that to coincide the terrain and the image layers is a difficult task because you'll need to modify one layer ( I think it's easier with image layer)