vtk-m2/vtkm/filter/ExternalFaces.hxx
Kenneth Moreland bddad9b386 Remove TryExecute from filters
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.
2018-10-16 15:59:53 -06:00

144 lines
4.3 KiB
C++

//============================================================================
// Copyright (c) Kitware, Inc.
// All rights reserved.
// See LICENSE.txt for details.
// This software is distributed WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE. See the above copyright notice for more information.
//
// Copyright 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
// Copyright 2014 UT-Battelle, LLC.
// Copyright 2014 Los Alamos National Security.
//
// Under the terms of Contract DE-NA0003525 with NTESS,
// the U.S. Government retains certain rights in this software.
//
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
// Laboratory (LANL), the U.S. Government retains certain rights in
// this software.
//============================================================================
namespace vtkm
{
namespace filter
{
//-----------------------------------------------------------------------------
inline VTKM_CONT ExternalFaces::ExternalFaces()
: vtkm::filter::FilterDataSet<ExternalFaces>()
, CompactPoints(false)
, Worklet()
{
this->SetPassPolyData(true);
}
namespace
{
template <typename BasePolicy>
struct CellSetExplicitPolicy : public BasePolicy
{
using AllCellSetList = vtkm::cont::CellSetListTagExplicitDefault;
};
template <typename DerivedPolicy>
inline vtkm::filter::PolicyBase<CellSetExplicitPolicy<DerivedPolicy>> GetCellSetExplicitPolicy(
const vtkm::filter::PolicyBase<DerivedPolicy>&)
{
return vtkm::filter::PolicyBase<CellSetExplicitPolicy<DerivedPolicy>>();
}
} // anonymous namespace
//-----------------------------------------------------------------------------
template <typename DerivedPolicy>
inline VTKM_CONT vtkm::cont::DataSet ExternalFaces::DoExecute(
const vtkm::cont::DataSet& input,
vtkm::filter::PolicyBase<DerivedPolicy> policy)
{
//1. extract the cell set
const vtkm::cont::DynamicCellSet& cells = input.GetCellSet(this->GetActiveCellSetIndex());
//2. using the policy convert the dynamic cell set, and run the
// external faces worklet
vtkm::cont::CellSetExplicit<> outCellSet(cells.GetName());
if (cells.IsSameType(vtkm::cont::CellSetStructured<3>()))
{
this->Worklet.Run(cells.Cast<vtkm::cont::CellSetStructured<3>>(),
input.GetCoordinateSystem(this->GetActiveCoordinateSystemIndex()),
outCellSet);
}
else
{
this->Worklet.Run(vtkm::filter::ApplyPolicyUnstructured(cells, policy), outCellSet);
}
//3. Check the fields of the dataset to see what kinds of fields are present so
// we can free the cell mapping array if it won't be needed.
const vtkm::Id numFields = input.GetNumberOfFields();
bool hasCellFields = false;
for (vtkm::Id fieldIdx = 0; fieldIdx < numFields && !hasCellFields; ++fieldIdx)
{
auto f = input.GetField(fieldIdx);
if (f.GetAssociation() == vtkm::cont::Field::Association::CELL_SET)
{
hasCellFields = true;
}
}
if (!hasCellFields)
{
this->Worklet.ReleaseCellMapArrays();
}
//4. create the output dataset
vtkm::cont::DataSet output;
output.AddCellSet(outCellSet);
output.AddCoordinateSystem(input.GetCoordinateSystem(this->GetActiveCoordinateSystemIndex()));
if (this->CompactPoints)
{
this->Compactor.SetCompactPointFields(true);
return this->Compactor.DoExecute(output, GetCellSetExplicitPolicy(policy));
}
else
{
return output;
}
}
//-----------------------------------------------------------------------------
template <typename T, typename StorageType, typename DerivedPolicy>
inline VTKM_CONT bool ExternalFaces::DoMapField(
vtkm::cont::DataSet& result,
const vtkm::cont::ArrayHandle<T, StorageType>& input,
const vtkm::filter::FieldMetadata& fieldMeta,
vtkm::filter::PolicyBase<DerivedPolicy> policy)
{
if (fieldMeta.IsPointField())
{
if (this->CompactPoints)
{
return this->Compactor.DoMapField(result, input, fieldMeta, policy);
}
else
{
result.AddField(fieldMeta.AsField(input));
return true;
}
}
else if (fieldMeta.IsCellField())
{
vtkm::cont::ArrayHandle<T> fieldArray;
fieldArray = this->Worklet.ProcessCellField(input);
result.AddField(fieldMeta.AsField(fieldArray));
return true;
}
return false;
}
}
}