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Ghost cells generator: bug fix when input ghosts are present

Yohann Bearzi (Kitware) requested to merge yohann.bearzi/vtk:ghost-pv-test-fix into master

  • In the presence of ghost cells in the input, the ghost cells generator generates maps so one can know the point id in the input given a point in the output. This remapping was missing for the points at the interface between 2 adjacent partitions.

  • The naming of the cell id / point id map was wrong. InputToOutput should have been named OutputToInput as we are fetching points from the input using the id in the output. An instance of InpputToOutput was however necessary for point ids, so it also has been added.

  • A potential bug fix has been resolved. This should not have been a problem as if all the points to be peeled off in the input are at the end of the point array, then the bug was not triggered. A point remapping from the input to the output was needed when deep copying input cells into the output. InputToOutputPointIdRedirectionMap is used for this case.

  • Input unstructured grids could have a non nullptr Faces and FaceLocations empty array. The filter was only checking for nullptr on those. A check on the number of values has beend added

  • Testing is being update to check for distorted cells in the output.

Addresses paraview/paraview#20906 (closed)

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