By default, the `FilterDataSet` class will iterate over all fields and
use `CastAndCall` on each one to call the subclass' mapping function
with the appropriate array type.
This only works if the array is of a known type. If it is not
`CastAndCall` throws an exception. However, having the entire filter
exception out just because one field cannot be converted does not make
sense. Instead, catch the exception, log a warning, and drop the field.
In FilterDataSet::MapFieldOntoOutput, it was getting each field to map
using the traits reserved for the active field. However, when mapping a
field outside of the DoExecute, we want to consider a broader set of
types.
Previously, all the ApplyPolicy functions had the same name and used
template resolution to figure out which one to use. This was pretty
clear at first when there was just one for fields and one for cell sets.
But then it grew to several different types, particularly for fields. It
was hard to look at the code and figure out which form of ApplyPolicy
was being used, and compilers were starting to get confused.
Resolve the problem by giving all the methods unique names to make it
clear which one you expect to be called.
By removing the ability to have multiple CellSets in a DataSet
we can simplify the following things:
- Cell Fields now don't require a CellSet name when being constructed
- Filters don't need to manage what the active cellset is
Now that the dispatcher does its own TryExecute, filters do not need to
do that. This change requires all worklets called by filters to be able
to execute without knowing the device a priori.
This commit removes `vtkm::filter::Result`. All methods that used
`vtkm::filter::Result` simply change to use `vtkm::cont::Dataset` instead.
The utility API on `Result` that was used to add fields to the resulting
dataset is now available via `vtkm::filter::internal::CreateResult`.
MapFieldOntoOutput is no longer public API. Since `vtkm::cont::Filter`
invokes it when appropriate, we no longer need to keep it public.
Also removes the overload of MapFieldOntoOutput that doesn't take
policy. That is no longer needed since vtkm::cont::Filter always can
provide the current policy being used.
Filters now support executing on a dataset to produce a result dataset
with automatic mapping of fields to the output dataset. Fields to map
can be selected using `vtkm::filter::FieldSelection` class, which provides
constructors to map all or no fields, along with a selection of fields.
This updates all tests to use the new filter API.
Previously we allowed a const ref as we would make a copy, this only works
as it relies on RuntimeDeviceTracker implementing state through a shared_ptr.
Instead if we require modifiable types only we can make TryExecute more
efficient and clearer on what it does.
Sandia National Laboratories recently changed management from the
Sandia Corporation to the National Technology & Engineering Solutions
of Sandia, LLC (NTESS). The copyright statements need to be updated
accordingly.
This method more clearly communicates "execution was successful" than
"IsDataSetValid". Changed some infrastructure code's use of these methods
to fix a bug in VTK.
They now grab the global runtime device tracker. In some cases, I've
added the ability to set/get the tracker to change it from the global.
In others I just removed the local copy, since it was just hooked into
the global tracker.
For some reason when VTK-m was being compiled as an accelerator in VTK,
Visual Studio 2013 gave a bunch of warnings about not being able to generate
assignment operators for many classes. This happened for classes with a
const ivar that could not be automatically set. (Automatic copy constructors
are fine on this count.) I'm not sure why these warnings did not happen
when just compiling VTK-m, nor am I sure why they were generated at all as
no code actually used the copy constructors.
This commit fixes the problems by adding a private declaration for assignment
operators that cannot be automatically created. No implementation is
provided, nor should any be needed.
Change the VTKM_CONT_EXPORT to VTKM_CONT. (Likewise for EXEC and
EXEC_CONT.) Remove the inline from these macros so that they can be
applied to everything, including implementations in a library.
Because inline is not declared in these modifies, you have to add the
keyword to functions and methods where the implementation is not inlined
in the class.
The TryExecute function was based off of the ResolveFieldTypeAnd*
classes made for filters. To reduce the amount of code duplication,
modify these two filter classes to use the more general TryExecute
functionality.
VTK-m style guidelines dictate that all classes part of the API should
be in their own header file. Thus, we have moved the result classes out
of the filter header files and into their own headers.
We have also renamed these clases to ResultField and ResultDataSet to
better match the class naming conventions of VTK-m.
Since we are moving around these result classes, we have also revamped
their structure. They are now in a hierarchy with a common ResultBase
class. Additionally, all result classes have a reference to a complete
DataSet that can be considered the output of the filter. This will make
it easier for users to consistently deal with filter results.
These changes cover issues #60 and #62.
The base classes for all the filters are named with 'Filter' at the end.
Generally the convention in VTK-m is to place the most general
descriptor (in this case Filter) first, which makes it easier to find
items in ordered lists.
This commit resolves issue #59.
