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vtk-m/docs/changelog/extract-geometry-permutation.md
Kenneth Moreland 49518e5054 Fix bug with ExtractGeometry filter 
The `ExtractGeometry` filter was outputing datasets containing
`CellSetPermutation` as the representation for the cells. Although this is
technically correct and a very fast implementation, it is essentially
useless. The problem is that any downstream processing will have to know
that the data has a `CellSetPermutation`. None do (because the permutation
can be on any other cell set type, which creates an explosion of possible
cell types).

Like was done with `Threshold` a while ago, this problem is fixed by deep
copying the result into a `CellSetExplicit`. This behavior is consistent
with VTK.
2024-05-03 09:22:56 -04:00

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Fix bug with ExtractGeometry filter

The ExtractGeometry filter was outputing datasets containing CellSetPermutation as the representation for the cells. Although this is technically correct and a very fast implementation, it is essentially useless. The problem is that any downstream processing will have to know that the data has a CellSetPermutation. None do (because the permutation can be on any other cell set type, which creates an explosion of possible cell types).

Like was done with Threshold a while ago, this problem is fixed by deep copying the result into a CellSetExplicit. This behavior is consistent with VTK.