mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 13:23:51 +00:00
68 lines
2.1 KiB
C++
68 lines
2.1 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_NDEntropy_hxx
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#define vtk_m_filter_NDEntropy_hxx
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/worklet/NDimsEntropy.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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inline VTKM_CONT NDEntropy::NDEntropy() {}
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void NDEntropy::AddFieldAndBin(const std::string& fieldName, vtkm::Id numOfBins)
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{
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this->FieldNames.push_back(fieldName);
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this->NumOfBins.push_back(numOfBins);
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}
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template <typename Policy>
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inline VTKM_CONT vtkm::cont::DataSet NDEntropy::DoExecute(
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const vtkm::cont::DataSet& inData,
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vtkm::filter::PolicyBase<Policy> vtkmNotUsed(policy))
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{
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vtkm::worklet::NDimsEntropy ndEntropy;
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ndEntropy.SetNumOfDataPoints(inData.GetField(0).GetNumberOfValues());
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// Add field one by one
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// (By using AddFieldAndBin(), the length of FieldNames and NumOfBins must be the same)
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for (size_t i = 0; i < FieldNames.size(); i++)
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{
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ndEntropy.AddField(inData.GetField(FieldNames[i]).GetData(), NumOfBins[i]);
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}
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// Run worklet to calculate multi-variate entropy
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vtkm::cont::ArrayHandle<vtkm::Float64> entropyHandle;
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vtkm::Float64 entropy = ndEntropy.Run();
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entropyHandle.Allocate(1);
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entropyHandle.WritePortal().Set(0, entropy);
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vtkm::cont::DataSet outputData;
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outputData.AddField(vtkm::cont::make_FieldPoint("Entropy", entropyHandle));
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return outputData;
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}
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//-----------------------------------------------------------------------------
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template <typename DerivedPolicy>
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inline VTKM_CONT bool NDEntropy::MapFieldOntoOutput(vtkm::cont::DataSet&,
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const vtkm::cont::Field&,
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vtkm::filter::PolicyBase<DerivedPolicy>)
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{
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return false;
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}
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}
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}
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#endif
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