mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 10:35:42 +00:00
79 lines
2.7 KiB
C++
79 lines
2.7 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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#ifndef vtk_m_filter_Threshold_h
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#define vtk_m_filter_Threshold_h
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#include <vtkm/filter/FilterDataSetWithField.h>
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#include <vtkm/worklet/Threshold.h>
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namespace vtkm
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{
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namespace filter
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{
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/// \brief Extracts cells where scalar value in cell satisfies threshold criterion
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///
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/// Extracts all cells from any dataset type that
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/// satisfy a threshold criterion. A cell satisfies the criterion if the
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/// scalar value of every point or cell satisfies the criterion. The
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/// criterion takes the form of between two values. The output of this
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/// filter is an permutation of the input dataset.
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///
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/// You can threshold either on point or cell fields
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class Threshold : public vtkm::filter::FilterDataSetWithField<Threshold>
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{
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public:
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VTKM_CONT
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Threshold();
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VTKM_CONT
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void SetLowerThreshold(vtkm::Float64 value) { this->LowerValue = value; }
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VTKM_CONT
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void SetUpperThreshold(vtkm::Float64 value) { this->UpperValue = value; }
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VTKM_CONT
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vtkm::Float64 GetLowerThreshold() const { return this->LowerValue; }
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VTKM_CONT
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vtkm::Float64 GetUpperThreshold() const { return this->UpperValue; }
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template <typename T, typename StorageType, typename DerivedPolicy>
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VTKM_CONT vtkm::cont::DataSet DoExecute(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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//Map a new field onto the resulting dataset after running the filter
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//this call is only valid
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template <typename T, typename StorageType, typename DerivedPolicy>
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VTKM_CONT bool DoMapField(vtkm::cont::DataSet& 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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vtkm::filter::PolicyBase<DerivedPolicy> policy);
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private:
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double LowerValue;
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double UpperValue;
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vtkm::worklet::Threshold Worklet;
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};
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template <>
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class FilterTraits<Threshold>
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{ //currently the threshold filter only works on scalar data.
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public:
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using InputFieldTypeList = TypeListTagScalarAll;
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};
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}
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} // namespace vtkm::filter
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#include <vtkm/filter/Threshold.hxx>
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#endif // vtk_m_filter_Threshold_h
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