The surface undulations of the 3D model created by Delaunay3D are not visible.

ParaView Support
1

I have encountered some issues while using ParaView to import CSV files and create 3D visualizations.
My processing flow is as follows:
*open > csv > apply
*Add Filter > Table To Points > apply
*Add Filter > Delaunay 3D > apply
The surface undulations of the 3D model created by Delaunay3D are not visible.

三维
三维1282×866 101 KB

However, when I create a Delaunay2D image, the undulations are quite obvious. Here is the processing flow:
*open > csv > apply
*Add Filter > Table To Points > apply
*Add Filter > Delaunay 2D > apply
2维
2维1493×781 181 KB

Please, what are some possible solutions to this?