mirror of
https://gitlab.kitware.com/vtk/vtk-m
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bddad9b386
Now that the dispatcher does its own TryExecute, filters do not need to do that. This change requires all worklets called by filters to be able to execute without knowing the device a priori.
82 lines
3.1 KiB
C++
82 lines
3.1 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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// 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 2016 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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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 vtk_m_filter_NDHistogram_h
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#define vtk_m_filter_NDHistogram_h
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#include <vtkm/filter/FilterDataSet.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 Generate a N-Dims histogram from input fields
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///
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/// This filter takes a data set and with target fields and bins defined,
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/// it would generate a N-Dims histogram from input fields. The result is stored
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/// in a field named as "Frequency". This filed contains all the frequencies of
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/// the N-Dims histogram in sparse representation. That being said, the result
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/// field does not store 0 frequency bins. Meanwhile all input fields now
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/// would have the same length and store bin ids instead.
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/// E.g. (FieldA[i], FieldB[i], FieldC[i], Frequency[i]) is a bin in the histogram.
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/// The first three numbers are binIDs for FieldA, FieldB and FieldC. Frequency[i] stores
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/// the frequency for this bin (FieldA[i], FieldB[i], FieldC[i]).
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///
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class NDHistogram : public vtkm::filter::FilterDataSet<NDHistogram>
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{
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public:
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VTKM_CONT
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NDHistogram();
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VTKM_CONT
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void AddFieldAndBin(const std::string& fieldName, vtkm::Id numOfBins);
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template <typename Policy>
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VTKM_CONT vtkm::cont::DataSet DoExecute(const vtkm::cont::DataSet& inData,
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vtkm::filter::PolicyBase<Policy> policy);
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// This index is the field position in FieldNames
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// (or the input _fieldName string vector of SetFields() Function)
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VTKM_CONT
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vtkm::Float64 GetBinDelta(size_t fieldIdx);
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// This index is the field position in FieldNames
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// (or the input _fieldName string vector of SetFields() Function)
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VTKM_CONT
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vtkm::Range GetDataRange(size_t fieldIdx);
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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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std::vector<vtkm::Id> NumOfBins;
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std::vector<std::string> FieldNames;
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std::vector<vtkm::Float64> BinDeltas;
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std::vector<vtkm::Range> DataRanges; //Min Max of the field
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};
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}
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} // namespace vtkm::filter
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#include <vtkm/filter/NDHistogram.hxx>
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#endif //vtk_m_filter_NDHistogram_h
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