mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 11:05:44 +00:00
bddad9b386
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.
102 lines
3.2 KiB
C++
102 lines
3.2 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 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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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-NA0003525 with NTESS,
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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_ThresholdPoints_h
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#define vtkm_m_worklet_ThresholdPoints_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/Algorithm.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/DataSet.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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class ThresholdPoints
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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 UnaryPredicate>
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class ThresholdPointField : public vtkm::worklet::WorkletMapCellToPoint
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{
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public:
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using ControlSignature = void(CellSetIn cellset,
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FieldInPoint<ScalarAll> scalars,
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FieldOutPoint<BoolType> passFlags);
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using ExecutionSignature = _3(_2);
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VTKM_CONT
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ThresholdPointField()
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: Predicate()
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{
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}
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VTKM_CONT
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explicit ThresholdPointField(const UnaryPredicate& predicate)
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: Predicate(predicate)
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{
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}
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template <typename ScalarType>
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VTKM_EXEC bool operator()(const ScalarType& scalar) const
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{
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return this->Predicate(scalar);
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}
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private:
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UnaryPredicate Predicate;
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};
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template <typename CellSetType, typename ScalarsArrayHandle, typename UnaryPredicate>
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vtkm::cont::CellSetSingleType<> Run(const CellSetType& cellSet,
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const ScalarsArrayHandle& scalars,
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const UnaryPredicate& predicate)
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{
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vtkm::cont::ArrayHandle<bool> passFlags;
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using ThresholdWorklet = ThresholdPointField<UnaryPredicate>;
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ThresholdWorklet worklet(predicate);
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DispatcherMapTopology<ThresholdWorklet> dispatcher(worklet);
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dispatcher.Invoke(cellSet, scalars, passFlags);
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vtkm::cont::ArrayHandle<vtkm::Id> pointIds;
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vtkm::cont::ArrayHandleCounting<vtkm::Id> indices =
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vtkm::cont::make_ArrayHandleCounting(vtkm::Id(0), vtkm::Id(1), passFlags.GetNumberOfValues());
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vtkm::cont::Algorithm::CopyIf(indices, passFlags, pointIds);
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// Make CellSetSingleType with VERTEX at each point id
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vtkm::cont::CellSetSingleType<> outCellSet(cellSet.GetName());
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outCellSet.Fill(cellSet.GetNumberOfPoints(), vtkm::CellShapeTagVertex::Id, 1, pointIds);
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return outCellSet;
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}
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};
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}
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} // namespace vtkm::worklet
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#endif // vtkm_m_worklet_ThresholdPoints_h
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