Visualize MDEventWorkspaces in Unstructured form.

[Owen Arnold]

Create the necessary vtkDataSet factories to do this. Create Plugins for Paraview that can visualize loaded MDEventWorkspaces. Allow recursion depth to be configurable at the top level. Preserve the ability to provide different thresholding strategies.

[Owen Arnold]

Questions for Janik: how exactly do we specify recursion depth. Iterator for MDBoxes seems to set a maximum recursion depth, but do we need to set an exact recursion depth? Also do we only want to visualize leaf nodes?

[Owen Arnold]

In [13541]:

Refs #3444. New factory type to generate unstructured grid from MDEventWorkspace.

[Owen Arnold]

In [13543]:

Refs #3444, Refs #3232. Fix warnings.

[Owen Arnold]

In [13544]:

Refs #3444. Add performance tests. Benchmark for future improvements.

[Owen Arnold]

In [13547]:

Refs #3444. Fix coordinate -> hexahedron mapping.

[Janik Zikovsky]

Owen, in answer to your question:

The iterator will return boxes _up to_ the max depth specified, so if you'd like to only show a particular depth you'd need to handle that in the code calling the iterator. You can do a check like

if (box->getDepth() == whatever) .

We could try both leaf-only or all nodes, but I think viewing only the leaf nodes will make more sense; that way you won't have overlapping cubes.

[Owen Arnold]

In [13560]:

Refs #3444. Very simple PV reader introduced. Only few options available. works of the MDEW nexus format (extension *.nxs_ro to separate from other readers).

[Owen Arnold]

In [13561]:

Refs #3444. Kill warnings.

[Owen Arnold]

This trial was successful. MDLoadingPresenter types will use the relevant MDEW based vtkDataSetFactories. Most of our readers/sources will open up workspaces in this form. The only exception is when loading *.sqw_old type files.

[Janik Zikovsky]

This viewer is in common use for MDEventWorkspaces.

[Stuart Campbell]

This ticket has been transferred to github issue ​4291