[Smtk-developers] Exodus bridge

[David Thompson]

Hi Yumin,

I've pushed a simple example bridge to SMTK master that uses VTK's Exodus reader to read side and node set information in as groups. No cells (volumes/faces/edges/vertices) are included, but the blocks and sets have tessellation information. You can do this:

  import smtk
  mgr = smtk.model.Manager.create()
  sess = mgr.createSession('exodus')
  rdr = sess.op('read')
  rdr.findAsFile('filename').setValue('can.ex2')
  res = rdr.operate()
  me = smtk.model.ModelEntity(res.findModelEntity('model').value(0))
  print '\n'.join([x.name() for x in me.groups()])

which will print this:

  Unnamed block ID: 1 Type: HEX
  Unnamed block ID: 2 Type: HEX
  Unnamed set ID: 4
  Unnamed set ID: 1
  Unnamed set ID: 100

Because each group has a Tessellation associated with it you should be able to render the side and node sets as well as element blocks. There are a few things left to do and then we will have an end-to-end example of simulation preparation using (unaltered) Exodus files.

1. Verify that the vtkModelMultiBlockSource properly includes the tessellation information attached to the side and node sets.
2. Add properties to the groups from the Exodus reader's metadata (describing set IDs).
3. Adapt an exporter to the new model.

I can do #1-2, but will need some help with #3.

	David