8520d70e0d
VTK-m now provides the following filters with the default policy as part of the vtkm_filter library: - CellAverage - CleanGrid - ClipWithField - ClipWithImplicitFunction - Contour - ExternalFaces - ExtractStructured - PointAverage - Threshold - VectorMagnitude By building these as a library we hope to provide faster compile times for consumers of VTK-m when using common configurations.
69 lines
2.0 KiB
C++
69 lines
2.0 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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//
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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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#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/DynamicCellSet.h>
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namespace
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{
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class ThresholdRange
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{
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public:
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VTKM_CONT
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ThresholdRange(const vtkm::Float64& lower, const vtkm::Float64& upper)
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: Lower(lower)
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, Upper(upper)
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{
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}
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template <typename T>
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VTKM_EXEC bool operator()(const T& value) const
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{
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return value >= static_cast<T>(this->Lower) && value <= static_cast<T>(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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} // end anon namespace
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namespace vtkm
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{
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namespace filter
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{
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//-----------------------------------------------------------------------------
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template <typename T, typename StorageType, typename DerivedPolicy>
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inline VTKM_CONT vtkm::cont::DataSet Threshold::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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vtkm::filter::PolicyBase<DerivedPolicy> policy)
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{
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//get the cells and coordinates of the dataset
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const vtkm::cont::DynamicCellSet& cells = input.GetCellSet();
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ThresholdRange predicate(this->GetLowerThreshold(), this->GetUpperThreshold());
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vtkm::cont::DynamicCellSet cellOut = this->Worklet.Run(
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vtkm::filter::ApplyPolicyCellSet(cells, policy), field, fieldMeta.GetAssociation(), predicate);
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vtkm::cont::DataSet output;
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output.SetCellSet(cellOut);
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output.AddCoordinateSystem(input.GetCoordinateSystem(this->GetActiveCoordinateSystemIndex()));
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return output;
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}
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}
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}
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