vtk-m2/vtkm/filter/ExternalFaces.hxx
2017-03-07 11:05:52 -05:00

117 lines
3.8 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 Sandia Corporation.
// Copyright 2014 UT-Battelle, LLC.
// Copyright 2014 Los Alamos National Security.
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// 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)
{
}
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,
typename DeviceAdapter>
inline VTKM_CONT
vtkm::filter::ResultDataSet ExternalFaces::DoExecute(const vtkm::cont::DataSet& input,
const vtkm::filter::PolicyBase<DerivedPolicy>& policy,
const DeviceAdapter&)
{
//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());
vtkm::worklet::ExternalFaces exfaces;
exfaces.Run(vtkm::filter::ApplyPolicyUnstructured(cells, policy),
outCellSet, DeviceAdapter());
//3. 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),
DeviceAdapter());
}
else
{
return vtkm::filter::ResultDataSet(output);
}
}
//-----------------------------------------------------------------------------
template<typename T,
typename StorageType,
typename DerivedPolicy,
typename DeviceAdapter>
inline VTKM_CONT
bool ExternalFaces::DoMapField(vtkm::filter::ResultDataSet &result,
const vtkm::cont::ArrayHandle<T, StorageType> &input,
const vtkm::filter::FieldMetadata &fieldMeta,
const vtkm::filter::PolicyBase<DerivedPolicy> &policy,
const DeviceAdapter&)
{
if (fieldMeta.IsPointField())
{
if (this->CompactPoints)
{
return this->Compactor.DoMapField(result, input, fieldMeta, policy, DeviceAdapter());
}
else
{
result.GetDataSet().AddField(fieldMeta.AsField(input));
return true;
}
}
return false;
}
}
}