2017-03-07 21:03:22 +00:00
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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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2019-04-15 23:24:21 +00:00
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//
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2017-03-07 21:03:22 +00:00
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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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2019-10-07 19:39:02 +00:00
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#ifndef vtk_m_filter_ThresholdPoints_hxx
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#define vtk_m_filter_ThresholdPoints_hxx
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2017-03-07 21:03:22 +00:00
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2018-04-02 21:58:21 +00:00
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#include <vtkm/cont/ErrorFilterExecution.h>
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2017-03-08 20:25:27 +00:00
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namespace
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{
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2017-03-07 21:03:22 +00:00
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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::Float64& value)
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: Value(value)
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{
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}
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2017-03-07 21:03:22 +00:00
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2017-05-18 14:29:41 +00:00
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template <typename ScalarType>
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VTKM_EXEC bool operator()(const ScalarType& value) const
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{
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2017-03-29 20:04:58 +00:00
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return value <= static_cast<ScalarType>(this->Value);
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}
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private:
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vtkm::Float64 Value;
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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::Float64& value)
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: Value(value)
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{
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}
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template <typename ScalarType>
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VTKM_EXEC bool operator()(const ScalarType& value) const
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{
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return value >= static_cast<ScalarType>(this->Value);
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}
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private:
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vtkm::Float64 Value;
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2017-03-07 21:03:22 +00:00
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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, 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 ScalarType>
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VTKM_EXEC bool operator()(const ScalarType& value) const
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{
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return value >= static_cast<ScalarType>(this->Lower) &&
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value <= static_cast<ScalarType>(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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2017-05-18 14:29:41 +00:00
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namespace vtkm
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{
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namespace filter
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{
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const int THRESHOLD_BELOW = 0;
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const int THRESHOLD_ABOVE = 1;
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const int THRESHOLD_BETWEEN = 2;
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//-----------------------------------------------------------------------------
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inline VTKM_CONT 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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, ThresholdType(THRESHOLD_BETWEEN)
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, CompactPoints(false)
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{
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}
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//-----------------------------------------------------------------------------
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inline VTKM_CONT void ThresholdPoints::SetThresholdBelow(const vtkm::Float64 value)
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{
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this->SetLowerThreshold(value);
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this->SetUpperThreshold(value);
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this->ThresholdType = THRESHOLD_BELOW;
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}
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inline VTKM_CONT void ThresholdPoints::SetThresholdAbove(const vtkm::Float64 value)
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{
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this->SetLowerThreshold(value);
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this->SetUpperThreshold(value);
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this->ThresholdType = THRESHOLD_ABOVE;
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}
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inline VTKM_CONT void ThresholdPoints::SetThresholdBetween(const vtkm::Float64 value1,
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const vtkm::Float64 value2)
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{
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this->SetLowerThreshold(value1);
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this->SetUpperThreshold(value2);
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this->ThresholdType = THRESHOLD_BETWEEN;
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}
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//-----------------------------------------------------------------------------
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2018-08-30 15:53:18 +00:00
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template <typename T, typename StorageType, typename DerivedPolicy>
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inline VTKM_CONT vtkm::cont::DataSet 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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vtkm::filter::PolicyBase<DerivedPolicy> policy)
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{
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// extract the input cell set
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const vtkm::cont::DynamicCellSet& cells = input.GetCellSet();
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// field to threshold on must be a point field
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if (fieldMeta.IsPointField() == false)
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{
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throw vtkm::cont::ErrorFilterExecution("Point field expected.");
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}
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// run the worklet on the cell set and input field
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vtkm::cont::CellSetSingleType<> outCellSet;
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vtkm::worklet::ThresholdPoints worklet;
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switch (this->ThresholdType)
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{
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case THRESHOLD_BELOW:
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{
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outCellSet = worklet.Run(vtkm::filter::ApplyPolicyCellSet(cells, policy, *this),
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field,
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ValuesBelow(this->GetLowerThreshold()));
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break;
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}
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case THRESHOLD_ABOVE:
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{
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outCellSet = worklet.Run(vtkm::filter::ApplyPolicyCellSet(cells, policy, *this),
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field,
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ValuesAbove(this->GetUpperThreshold()));
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break;
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}
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case THRESHOLD_BETWEEN:
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default:
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{
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outCellSet = worklet.Run(vtkm::filter::ApplyPolicyCellSet(cells, policy, *this),
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field,
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ValuesBetween(this->GetLowerThreshold(), this->GetUpperThreshold()));
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break;
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}
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}
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// create the output dataset
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vtkm::cont::DataSet output;
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output.SetCellSet(outCellSet);
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output.AddCoordinateSystem(input.GetCoordinateSystem(this->GetActiveCoordinateSystemIndex()));
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// compact the unused points in the output dataset
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if (this->CompactPoints)
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{
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this->Compactor.SetCompactPointFields(true);
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this->Compactor.SetMergePoints(true);
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return this->Compactor.Execute(output);
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}
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else
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{
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2018-04-02 21:58:21 +00:00
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return output;
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}
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}
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//-----------------------------------------------------------------------------
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2020-02-05 04:44:10 +00:00
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template <typename DerivedPolicy>
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inline VTKM_CONT bool ThresholdPoints::MapFieldOntoOutput(
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vtkm::cont::DataSet& result,
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const vtkm::cont::Field& field,
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vtkm::filter::PolicyBase<DerivedPolicy> policy)
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{
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// point data is copied as is because it was not collapsed
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if (field.IsFieldPoint())
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{
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if (this->CompactPoints)
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{
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return this->Compactor.MapFieldOntoOutput(result, field, policy);
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}
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else
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{
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result.AddField(field);
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return true;
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}
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}
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2020-02-19 17:34:24 +00:00
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else if (field.IsFieldGlobal())
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{
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result.AddField(field);
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return true;
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}
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else
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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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}
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2019-10-07 19:39:02 +00:00
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#endif
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