1cc855abec
Refs #157.
194 lines
5.4 KiB
C++
194 lines
5.4 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_Threshold_h
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#define vtkm_m_worklet_Threshold_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/DeviceAdapterAlgorithm.h>
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#include <vtkm/cont/DynamicArrayHandle.h>
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#include <vtkm/cont/Field.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 Threshold
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{
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public:
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enum class FieldType
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{
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Point,
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Cell
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};
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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 ThresholdByPointField : public vtkm::worklet::WorkletMapPointToCell
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{
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public:
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typedef void ControlSignature(CellSetIn cellset,
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FieldInPoint<ScalarAll> scalars,
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FieldOutCell<BoolType> passFlags);
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typedef _3 ExecutionSignature(_2, PointCount);
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VTKM_CONT
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ThresholdByPointField()
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: Predicate()
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{
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}
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VTKM_CONT
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explicit ThresholdByPointField(const UnaryPredicate& predicate)
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: Predicate(predicate)
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{
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}
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template <typename ScalarsVecType>
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VTKM_EXEC bool operator()(const ScalarsVecType& scalars, vtkm::Id count) const
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{
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bool pass = false;
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for (vtkm::IdComponent i = 0; i < count; ++i)
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{
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pass |= this->Predicate(scalars[i]);
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}
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return pass;
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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 UnaryPredicate>
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class ThresholdByCellField : public vtkm::worklet::WorkletMapPointToCell
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{
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public:
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typedef void ControlSignature(CellSetIn cellset,
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FieldInTo<Scalar> scalars,
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FieldOut<BoolType> passFlags);
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typedef _3 ExecutionSignature(_2);
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VTKM_CONT
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ThresholdByCellField()
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: Predicate()
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{
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}
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VTKM_CONT
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explicit ThresholdByCellField(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,
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typename ValueType,
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typename StorageType,
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typename UnaryPredicate,
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typename DeviceAdapter>
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vtkm::cont::CellSetPermutation<CellSetType> Run(
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const CellSetType& cellSet,
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const vtkm::cont::ArrayHandle<ValueType, StorageType>& field,
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const vtkm::cont::Field::AssociationEnum fieldType,
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const UnaryPredicate& predicate,
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DeviceAdapter device)
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{
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(void)device;
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typedef vtkm::cont::CellSetPermutation<CellSetType> OutputType;
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vtkm::cont::ArrayHandle<bool> passFlags;
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switch (fieldType)
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{
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case vtkm::cont::Field::ASSOC_POINTS:
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{
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typedef ThresholdByPointField<UnaryPredicate> ThresholdWorklet;
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ThresholdWorklet worklet(predicate);
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DispatcherMapTopology<ThresholdWorklet, DeviceAdapter> dispatcher(worklet);
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dispatcher.Invoke(cellSet, field, passFlags);
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break;
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}
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case vtkm::cont::Field::ASSOC_CELL_SET:
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{
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typedef ThresholdByCellField<UnaryPredicate> ThresholdWorklet;
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ThresholdWorklet worklet(predicate);
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DispatcherMapTopology<ThresholdWorklet, DeviceAdapter> dispatcher(worklet);
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dispatcher.Invoke(cellSet, field, passFlags);
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break;
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}
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default:
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throw vtkm::cont::ErrorBadValue("Expecting point or cell field.");
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}
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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::DeviceAdapterAlgorithm<DeviceAdapter>::CopyIf(
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indices, passFlags, this->ValidCellIds);
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return OutputType(this->ValidCellIds, cellSet, cellSet.GetName());
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}
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template <typename ValueType, typename StorageTag, typename DeviceTag>
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vtkm::cont::ArrayHandle<ValueType> ProcessCellField(
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const vtkm::cont::ArrayHandle<ValueType, StorageTag> in,
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DeviceTag) const
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{
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using Algo = vtkm::cont::DeviceAdapterAlgorithm<DeviceTag>;
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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_Threshold_h
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