[Feature]: vtk-ROI-reporter - it would be nice to only export a portion of the domain to vtk to save disk space #276
Description
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Is your proposal related to a problem?
for large simulation domains, vtk files get quite large. Sometimes the region of interest (ROI) is pretty small (only the inlet, only the outlet, only an obstacle in the flow etc.).
Describe the solution you'd like
Only exporting vtk-data from that ROI (which can in the most basic case be rectangular (2D) or a rectangular prism (3D)) can drastically save disk space.
The reporter needs an interval for every spacial dimension.
If an interval is of size 0 (start = end), the ROI has an extent of 1 in that direction (example: only a 2D plane is exported from a 3D domain etc.)
Describe alternatives you've considered
This is an alternative.
Additional context
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