mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 02:55:47 +00:00
177 lines
5.0 KiB
C++
177 lines
5.0 KiB
C++
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//============================================================================
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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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#include <vtkm/cont/DynamicCellSet.h>
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#include <vtkm/worklet/DispatcherMapTopology.h>
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namespace
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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::Float32& thresholdValue) :
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ThresholdValue(thresholdValue)
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{ }
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template<typename T>
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VTKM_EXEC
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bool operator()(const T& value) const
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{
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return value <= static_cast<T>(this->ThresholdValue);
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}
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private:
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vtkm::Float32 ThresholdValue;
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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::Float32& thresholdValue) :
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ThresholdValue(thresholdValue)
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{ }
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template<typename T>
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VTKM_EXEC
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bool operator()(const T& value) const
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{
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return value >= static_cast<T>(this->ThresholdValue);
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}
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private:
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vtkm::Float32 ThresholdValue;
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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) :
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Lower(lower),
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Upper(upper)
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{ }
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template<typename T>
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VTKM_EXEC
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bool operator()(const T& value) const
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{
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return value >= static_cast<T>(this->Lower) &&
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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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}
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namespace vtkm {
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namespace filter {
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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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{
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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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//get the cells and coordinates of the dataset
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const vtkm::cont::DynamicCellSet& cells =
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input.GetCellSet(this->GetActiveCellSetIndex());
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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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ValuesBetween predicate( this->GetLowerThreshold(), this->GetUpperThreshold() );
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// output dataset
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vtkm::cont::DataSet output;
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vtkm::cont::CellSetSingleType<> outCellSet;
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// output data set gets cell set from the worklet
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vtkm::worklet::ThresholdPoints worklet;
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outCellSet = worklet.Run(vtkm::filter::ApplyPolicy(cells, policy),
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field,
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predicate,
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device);
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output.AddCellSet(outCellSet);
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// add input dataset coordinates to the output dataset
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output.AddCoordinateSystem(
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input.GetCoordinateSystem(this->GetActiveCoordinateSystemIndex()) );
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return vtkm::filter::ResultDataSet(output);
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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>&,
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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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result.GetDataSet().AddField(fieldMeta.AsField(input));
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return true;
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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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