mpi_found vs found_mpi (#232)

update to support new vtk-m (#229)

* Updating threshold to match new vtkm

* try vtk-m 1.7.0 rc

* heal

* adjust for new vtk-m

* Fixing DataSetWriter warning.

* retest release branch

* remove patch

* Add calls to text and line annotation batching vtk-m API

VTK-m introduced new APIs to batch text and line annotation rendering.
This speeds up the rendering of the annotations, but requires calling:
 - `Canvas::BeginTextRenderingBatch()` and `Canvas::EndTextRenderingBatch()`
  for batched text rendering.
 - `WorldAnnotator::BeginLineRenderingBatch()` and
 `WorldAnnotator::EndLineRenderingBatch()` for batched line rendering

* update to new vtk-m hash

* add vtkh init function

* build using released 1.7.0 vtk-m

* fix typo and use newer configs

* add missing include

* update hashes to point to vtk-m 1.7.0

Co-authored-by: James <james@jameskress.com>
Co-authored-by: Manish Mathai <manishpmathai@gmail.com>

unify spack branches

fixing a compositing issue and never set the radius to 0 (#205)

* fixing a compositing issue and never set the radius to 0

* account for an empty data set for clipping

* add a test for rendering particles with no data

Update hell (#201)

* merge particles

* cleaning it up

* whoops

* Update ParticleMerging.cpp

* need to merge

* update vtkm hash

* force rebuild

* force rebuild

* adding missing headers

* update hash

* typo for storage list

2020 12 update vtkm (#194)

* merge camp's changes

* suppress deprecation warning

* suppress deprecation warning

* 2021 01 update vtkm update contour tree (#192)

* Fixed a bug in the Contour tree code.

* Added the contour tree test app to the cmake test list.

Co-authored-by: David Camp <dcamp@tracy.lbl.gov>

* remove include

* fix deprecation warnings

* update vtkm hash

* dash vs non dash drama

* add path for scaling bounding box annotations

* python 3 fix

* enable tests (change needed b/c of new spack pkg)

* bring vim along for the ride

* dont break things due to vim

* fixing type list

* try j 2

* restore option to enable or disable contour tree

* adding correct ifdefs and compile flags

Co-authored-by: David-Camp <57725641+David-Camp@users.noreply.github.com>
Co-authored-by: David Camp <dcamp@tracy.lbl.gov>
Co-authored-by: Cyrus Harrison <cyrush@llnl.gov>

revert time travel

Tet and tri (#186)

* adding new filters

* adding the corresponding vtkh filters

adding point transform (#185)

* adding point transform

* add a way to disable color bars

fix is points call