vtk-m/vtkm/filter/VertexClustering.hxx
Kenneth Moreland 5498ecd35b Properly handle global (whole mesh) fields in data set filters
Generally, fields that have a WHOLE_MESH association might be valid even
if the structure of the mesh changes. Thus, it makes sense for filters
to pass this data pretty much all the time.

Also cleaned up some code and comments to make the relationship between
`MapFieldOntoOutput` and `DoMapField` more clear.
2020-05-21 08:34:34 -06:00

76 lines
2.3 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.
//============================================================================
#ifndef vtk_m_filter_VertexClustering_hxx
#define vtk_m_filter_VertexClustering_hxx
#include <vtkm/filter/VertexClustering.h>
#include <vtkm/filter/MapFieldPermutation.h>
namespace vtkm
{
namespace filter
{
//-----------------------------------------------------------------------------
inline VTKM_CONT VertexClustering::VertexClustering()
: vtkm::filter::FilterDataSet<VertexClustering>()
, NumberOfDivisions(256, 256, 256)
{
}
//-----------------------------------------------------------------------------
template <typename DerivedPolicy>
inline VTKM_CONT vtkm::cont::DataSet VertexClustering::DoExecute(
const vtkm::cont::DataSet& input,
const vtkm::filter::PolicyBase<DerivedPolicy>& policy)
{
// todo this code needs to obey the policy for what storage types
// the output should use
//need to compute bounds first
vtkm::Bounds bounds = input.GetCoordinateSystem().GetBounds();
vtkm::cont::DataSet outDataSet = this->Worklet.Run(
vtkm::filter::ApplyPolicyCellSetUnstructured(input.GetCellSet(), policy, *this),
input.GetCoordinateSystem(),
bounds,
this->GetNumberOfDivisions());
return outDataSet;
}
//-----------------------------------------------------------------------------
template <typename DerivedPolicy>
inline VTKM_CONT bool VertexClustering::MapFieldOntoOutput(vtkm::cont::DataSet& result,
const vtkm::cont::Field& field,
vtkm::filter::PolicyBase<DerivedPolicy>)
{
if (field.IsFieldPoint())
{
return vtkm::filter::MapFieldPermutation(field, this->Worklet.GetPointIdMap(), result);
}
else if (field.IsFieldCell())
{
return vtkm::filter::MapFieldPermutation(field, this->Worklet.GetCellIdMap(), result);
}
else if (field.IsFieldGlobal())
{
result.AddField(field);
return true;
}
else
{
return false;
}
}
}
}
#endif