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Dan Lipsa authored
Co-authored-by: Yuanxin Liu <leo.liu@kitware.com> Co-authored-by: Berk Geveci <berk.geveci@kitware.com> -The semantics of each unsigned char in the ghost arrays changes: Instead of storing a numeric value representing how far a cell is from the boundary, it is now a bit field specified by vtkDataSetAttributes::CellGhostTypes and vtkDataSetAttributes::PointGhostTypes. The bit field is consistent with VisIt specs. - Previously, filters strip all ghost cells they request from upstream before finalizing the output. This is no longer done. - vtkUniform grids previously supported blanking through member arrays vtkUniformGrid::CellVisibility and vtkUniformGrid::PointVisibility. These arrays are removed and the blanking functionality are supported through the new ghost arrays instead. - the "vtkGhostLevel" arrays for cell and point data are renamed to vtkDataSetAttributes::GhostArrayName() ("vtkGhostType"). - the version for VTK Legacy files is increased to 4.0 and the version for VTK XML files is increased to 2.0. When reading older files we convert vtkGhostLevels array to vtkGhostType.
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