254 lines
7.3 KiB
C++
254 lines
7.3 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 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 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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namespace
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{
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// Needed to CompactPoints
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template <typename BasePolicy>
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struct CellSetSingleTypePolicy : public BasePolicy
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{
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using AllCellSetList = vtkm::cont::CellSetListTagUnstructured;
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};
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template <typename DerivedPolicy>
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inline vtkm::filter::PolicyBase<CellSetSingleTypePolicy<DerivedPolicy>>
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GetCellSetSingleTypePolicy(const vtkm::filter::PolicyBase<DerivedPolicy>&)
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{
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return vtkm::filter::PolicyBase<CellSetSingleTypePolicy<DerivedPolicy>>();
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}
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// Predicate for values less than minimum
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class ValuesBelow
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{
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public:
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VTKM_CONT
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ValuesBelow(const vtkm::Float64& value) : Value(value) {}
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template<typename ScalarType>
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VTKM_EXEC
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bool operator()(const ScalarType& value) const
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{
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return value <= static_cast<ScalarType>(this->Value);
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}
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private:
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vtkm::Float64 Value;
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};
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// Predicate for values greater than maximum
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class ValuesAbove
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{
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public:
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VTKM_CONT
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ValuesAbove(const vtkm::Float64& value) : Value(value) {}
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template<typename ScalarType>
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VTKM_EXEC
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bool operator()(const ScalarType& value) const
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{
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return value >= static_cast<ScalarType>(this->Value);
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}
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private:
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vtkm::Float64 Value;
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};
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// Predicate for values between minimum and maximum
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class ValuesBetween
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{
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public:
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VTKM_CONT
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ValuesBetween(const vtkm::Float64& lower,
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const vtkm::Float64& upper) : Lower(lower), Upper(upper)
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{ }
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template<typename ScalarType>
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VTKM_EXEC
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bool operator()(const ScalarType& value) const
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{
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return value >= static_cast<ScalarType>(this->Lower) &&
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value <= static_cast<ScalarType>(this->Upper);
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}
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private:
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vtkm::Float64 Lower;
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vtkm::Float64 Upper;
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};
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}
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namespace vtkm {
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namespace filter {
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const int THRESHOLD_BELOW = 0;
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const int THRESHOLD_ABOVE = 1;
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const int THRESHOLD_BETWEEN = 2;
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//-----------------------------------------------------------------------------
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inline VTKM_CONT
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ThresholdPoints::ThresholdPoints():
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vtkm::filter::FilterDataSetWithField<ThresholdPoints>(),
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LowerValue(0),
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UpperValue(0),
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ThresholdType(THRESHOLD_BETWEEN),
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CompactPoints(false)
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{
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}
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//-----------------------------------------------------------------------------
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inline VTKM_CONT
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void ThresholdPoints::SetThresholdBelow(const vtkm::Float64 value)
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{
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this->SetLowerThreshold(value);
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this->SetUpperThreshold(value);
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this->ThresholdType = THRESHOLD_BELOW;
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}
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inline VTKM_CONT
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void ThresholdPoints::SetThresholdAbove(const vtkm::Float64 value)
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{
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this->SetLowerThreshold(value);
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this->SetUpperThreshold(value);
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this->ThresholdType = THRESHOLD_ABOVE;
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}
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inline VTKM_CONT
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void ThresholdPoints::SetThresholdBetween(const vtkm::Float64 value1,
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const vtkm::Float64 value2)
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{
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this->SetLowerThreshold(value1);
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this->SetUpperThreshold(value2);
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this->ThresholdType = THRESHOLD_BETWEEN;
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}
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//-----------------------------------------------------------------------------
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template<typename T,
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typename StorageType,
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typename DerivedPolicy,
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typename DeviceAdapter>
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inline VTKM_CONT
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vtkm::filter::ResultDataSet ThresholdPoints::DoExecute(
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const vtkm::cont::DataSet& input,
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const vtkm::cont::ArrayHandle<T, StorageType>& field,
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const vtkm::filter::FieldMetadata& fieldMeta,
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const vtkm::filter::PolicyBase<DerivedPolicy>& policy,
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const DeviceAdapter& device)
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{
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// extract the input cell set
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const vtkm::cont::DynamicCellSet& cells =
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input.GetCellSet(this->GetActiveCellSetIndex());
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// field to threshold on must be a point field
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if (fieldMeta.IsPointField() == false)
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{
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//todo: we need to mark this as a failure of input, not a failure of the algorithm
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return vtkm::filter::ResultDataSet();
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}
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// run the worklet on the cell set and input field
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vtkm::cont::CellSetSingleType<> outCellSet;
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vtkm::worklet::ThresholdPoints worklet;
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switch (this->ThresholdType)
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{
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case THRESHOLD_BELOW:
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{
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outCellSet = worklet.Run(vtkm::filter::ApplyPolicy(cells, policy),
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field,
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ValuesBelow(this->GetLowerThreshold()),
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device);
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break;
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}
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case THRESHOLD_ABOVE:
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{
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outCellSet = worklet.Run(vtkm::filter::ApplyPolicy(cells, policy),
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field,
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ValuesAbove(this->GetUpperThreshold()),
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device);
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break;
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}
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case THRESHOLD_BETWEEN:
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default:
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{
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outCellSet = worklet.Run(vtkm::filter::ApplyPolicy(cells, policy),
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field,
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ValuesBetween(this->GetLowerThreshold(), this->GetUpperThreshold()),
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device);
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break;
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}
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}
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// create the output dataset
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vtkm::cont::DataSet output;
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output.AddCellSet(outCellSet);
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output.AddCoordinateSystem(input.GetCoordinateSystem(this->GetActiveCoordinateSystemIndex()) );
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// compact the unused points in the output dataset
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if (this->CompactPoints)
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{
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this->Compactor.SetCompactPointFields(true);
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vtkm::filter::ResultDataSet result;
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result = this->Compactor.DoExecute(output,
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GetCellSetSingleTypePolicy(policy),
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DeviceAdapter());
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return result;
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}
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else
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{
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return vtkm::filter::ResultDataSet(output);
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}
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}
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//-----------------------------------------------------------------------------
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template<typename T,
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typename StorageType,
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typename DerivedPolicy,
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typename DeviceAdapter>
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inline VTKM_CONT
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bool ThresholdPoints::DoMapField(
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vtkm::filter::ResultDataSet& result,
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const vtkm::cont::ArrayHandle<T, StorageType>& input,
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const vtkm::filter::FieldMetadata& fieldMeta,
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const vtkm::filter::PolicyBase<DerivedPolicy>& policy,
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const DeviceAdapter&)
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{
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// point data is copied as is because it was not collapsed
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if(fieldMeta.IsPointField())
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{
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if (this->CompactPoints)
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{
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return this->Compactor.DoMapField(result, input, fieldMeta, policy, DeviceAdapter());
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}
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else
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{
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result.GetDataSet().AddField(fieldMeta.AsField(input));
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return true;
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}
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}
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// cell data does not apply
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return false;
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}
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}
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}
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