How to crop vertically the 3D tileset in parallel with the line

Hi Cesium team,

I would like to ask how to crop the 3D tileset in parallel with the line using clippingPlane object.

However, the normal vector for the plane object seems to be wrong as

the result is below,

Also the red plane entity would not align with the clipping plane as well.

why you dont try this way? example

Thanks @Yen_Woody

However, I don’t how to execute the crop function on the 3d model on your code.
Can you please tell me the how to operate?