b934c1c71b
Without requiring c++11 we can't properly provided default device adapters to templated functions.
189 lines
5.5 KiB
C++
189 lines
5.5 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/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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namespace worklet {
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class Threshold
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{
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public:
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struct BoolType : vtkm::ListTagBase<bool> { };
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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_EXPORT
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ThresholdByPointField() : Predicate() { }
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VTKM_CONT_EXPORT
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explicit ThresholdByPointField(const UnaryPredicate &predicate)
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: Predicate(predicate)
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{ }
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template<typename ScalarsVecType>
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VTKM_EXEC_EXPORT
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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_EXPORT
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ThresholdByCellField() : Predicate() { }
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VTKM_CONT_EXPORT
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explicit ThresholdByCellField(const UnaryPredicate &predicate)
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: Predicate(predicate)
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{ }
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template<typename ScalarType>
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VTKM_EXEC_EXPORT
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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 UnaryPredicate, typename DeviceAdapter>
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vtkm::cont::CellSetPermutation< CellSetType >
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Run(const CellSetType &cellSet,
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const vtkm::cont::Field &field,
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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(field.GetAssociation())
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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::ErrorControlBadValue("Expecting point or cell field.");
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}
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vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter>
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::StreamCompact(passFlags, this->ValidCellIds);
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return OutputType(this->ValidCellIds, cellSet, cellSet.GetName());
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}
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class PermuteCellData
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{
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public:
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PermuteCellData(const vtkm::cont::ArrayHandle<vtkm::Id> validCellIds,
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vtkm::cont::DynamicArrayHandle &data)
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: ValidCellIds(validCellIds), Data(&data)
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{ }
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template <typename ArrayHandleType>
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void operator()(const ArrayHandleType &input) const
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{
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*(this->Data) = vtkm::cont::DynamicArrayHandle(
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vtkm::cont::make_ArrayHandlePermutation(this->ValidCellIds, input));
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}
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private:
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vtkm::cont::ArrayHandle<vtkm::Id> ValidCellIds;
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vtkm::cont::DynamicArrayHandle *Data;
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};
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vtkm::cont::Field ProcessCellField(const vtkm::cont::Field field) const
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{
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if (field.GetAssociation() != vtkm::cont::Field::ASSOC_CELL_SET)
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{
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throw vtkm::cont::ErrorControlBadValue("Expecting cell field.");
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}
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vtkm::cont::DynamicArrayHandle data;
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CastAndCall(field, PermuteCellData(this->ValidCellIds, data));
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return vtkm::cont::Field(field.GetName(), field.GetAssociation(),
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field.GetAssocCellSet(), data);
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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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