VTK clip: How to clip with cell as the minimum unit

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1

I want to clip the model (for finite element simulation). However, the existing clipping methods triangulate the cell.
In other word, for a cell, it is either cut or not cut, rather than cutting a part of a cell and triangulating it.

2

image
just like this, the cells will not be cutted.

3

vtkExtractGeometry. It is not obvious from the name that this filter would do what you are requesting.

Here’s an example: https://kitware.github.io/vtk-examples/site/Python/VisualizationAlgorithms/ExtractData/

Note that the example is extracting whole cells within a spherical region. You probably want to extract cells on one side of a plane based on your example image. That’s possible - just change the vtkImplicitFunction you are passing to vtkExtractGeometry.

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4

@cory.quammen Thank you, it’s just what I want.