mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 11:05:44 +00:00
88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2015 Sandia Corporation.
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtkm_m_worklet_Mask_h
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#define vtkm_m_worklet_Mask_h
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#include <vtkm/worklet/DispatcherMapTopology.h>
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#include <vtkm/worklet/WorkletMapTopology.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleCounting.h>
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#include <vtkm/cont/ArrayHandlePermutation.h>
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#include <vtkm/cont/CellSetPermutation.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/DeviceAdapterAlgorithm.h>
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namespace vtkm
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{
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namespace worklet
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{
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// Subselect points using stride for now, creating new cellset of vertices
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class Mask
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{
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public:
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struct BoolType : vtkm::ListTagBase<bool>
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{
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};
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template <typename CellSetType, typename DeviceAdapter>
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vtkm::cont::CellSetPermutation<CellSetType> Run(const CellSetType& cellSet,
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const vtkm::Id stride,
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DeviceAdapter)
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{
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typedef typename vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter> DeviceAlgorithm;
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typedef vtkm::cont::CellSetPermutation<CellSetType> OutputType;
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vtkm::Id numberOfInputCells = cellSet.GetNumberOfCells();
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vtkm::Id numberOfSampledCells = numberOfInputCells / stride;
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vtkm::cont::ArrayHandleCounting<vtkm::Id> strideArray(0, stride, numberOfSampledCells);
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DeviceAlgorithm::Copy(strideArray, this->ValidCellIds);
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return OutputType(this->ValidCellIds, cellSet, cellSet.GetName());
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}
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//----------------------------------------------------------------------------
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template <typename ValueType, typename StorageType, typename DeviceAdapter>
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vtkm::cont::ArrayHandle<ValueType> ProcessCellField(
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const vtkm::cont::ArrayHandle<ValueType, StorageType>& in,
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const DeviceAdapter&) const
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{
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using Algo = vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter>;
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// Use a temporary permutation array to simplify the mapping:
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auto tmp = vtkm::cont::make_ArrayHandlePermutation(this->ValidCellIds, in);
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// Copy into an array with default storage:
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vtkm::cont::ArrayHandle<ValueType> result;
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Algo::Copy(tmp, result);
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return result;
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}
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private:
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vtkm::cont::ArrayHandle<vtkm::Id> ValidCellIds;
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};
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}
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} // namespace vtkm::worklet
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#endif // vtkm_m_worklet_Mask_h
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