Hello all,
I am attempting to develop a Paraview plugin to read in parallel a
multipiece structured dataset through a custom I/O library. Since our
data is already broken up into pieces it would be nice to use a grid
type which has a DATA_EXTENT_TYPE of VTK_PIECES_EXTENT, otherwise when
using VTK_3D_EXTENT extra code will need to be created to calculate and
subtract sub-extents such as seen in vtkXMLPStructuredDataReader. There
are three different options I am considering for developing this reader:
1) Use an Unstructured Grid
Simply translate our structured grid into a vtkUnstructuredGrid using
Hexahedron cells. Will unstructured grids be as efficient as structured
grids for operations such as cut planes and streamlines, or are there
any efficiency disadvantages to using unstructured grids in general?
2) Subclass Structured Grid
Create a subclass of vtkStructuredGrid which uses has a DATA_EXTENT_TYPE
of VTK_PIECES_EXTENT. Is this even feasible, or any other issues?
3) Use a Structured Grid
Just write the code to calculate and subtract 3d sub-extents, better
than above options?
Any feedback or advice is greatly appreciated.
Thanks,
-Erik
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