However, after this workflow, I cannot get the result like the result in the video. The new clipped file is always invisible. I guess these four screenshots are self explanatory.
There is no need for file export and import. Instead, you can go to Data module, right-click on the segmentation, and choose “Export visible segments to model node”.
You can go to Data module and click on the eye icon of the original (non-clipped surface) to hide it.
However, this problem still exists. And I found that it was because the place of the Markups. Sometimes the ClippedRegion can be shown correctly, but if I move one of the Markups slightly, the ClippedRegion will becomes invisible again (please refer to the two screenshots below).
Similarly to most other complex computational geometry algorithms that operate on polygonal meshes, this tool is somewhat sensitive to the quality of the input mesh and curve. If processing fails then you can do the following:
improve input curve:
constrain the curve to the mesh: in Markups module/Curve settings, choose Curve type → Shortest distance on surface, Surface / Model node → the surface you wan to cut
resample the curve: in Markups module/Resample click Resample curve
improve mesh quality (subdivide mesh if the original, mesh resolution is too coarse; remesh cells of the mesh are ill-shaped, etc.)
