mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
a92ad22c73
Using GCC 9.2 the pre change vtkm::filter::Threshold would take 31.84sec to compile and use 1.1GB of memory. After these changes the filter takes 24.16sec to compile and uses 885MB of memory.
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
//
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//============================================================================
|
|
#ifndef vtkm_m_worklet_ThresholdPoints_h
|
|
#define vtkm_m_worklet_ThresholdPoints_h
|
|
|
|
#include <vtkm/worklet/DispatcherMapTopology.h>
|
|
#include <vtkm/worklet/WorkletMapTopology.h>
|
|
|
|
#include <vtkm/cont/Algorithm.h>
|
|
#include <vtkm/cont/ArrayHandle.h>
|
|
#include <vtkm/cont/DataSet.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace worklet
|
|
{
|
|
|
|
class ThresholdPoints
|
|
{
|
|
public:
|
|
template <typename UnaryPredicate>
|
|
class ThresholdPointField : public vtkm::worklet::WorkletVisitPointsWithCells
|
|
{
|
|
public:
|
|
using ControlSignature = void(CellSetIn cellset, FieldInPoint scalars, FieldOutPoint passFlags);
|
|
using ExecutionSignature = _3(_2);
|
|
|
|
VTKM_CONT
|
|
ThresholdPointField()
|
|
: Predicate()
|
|
{
|
|
}
|
|
|
|
VTKM_CONT
|
|
explicit ThresholdPointField(const UnaryPredicate& predicate)
|
|
: Predicate(predicate)
|
|
{
|
|
}
|
|
|
|
template <typename ScalarType>
|
|
VTKM_EXEC bool operator()(const ScalarType& scalar) const
|
|
{
|
|
return this->Predicate(scalar);
|
|
}
|
|
|
|
private:
|
|
UnaryPredicate Predicate;
|
|
};
|
|
|
|
template <typename CellSetType, typename ScalarsArrayHandle, typename UnaryPredicate>
|
|
vtkm::cont::CellSetSingleType<> Run(const CellSetType& cellSet,
|
|
const ScalarsArrayHandle& scalars,
|
|
const UnaryPredicate& predicate)
|
|
{
|
|
vtkm::cont::ArrayHandle<bool> passFlags;
|
|
|
|
using ThresholdWorklet = ThresholdPointField<UnaryPredicate>;
|
|
|
|
ThresholdWorklet worklet(predicate);
|
|
DispatcherMapTopology<ThresholdWorklet> dispatcher(worklet);
|
|
dispatcher.Invoke(cellSet, scalars, passFlags);
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::Id> pointIds;
|
|
vtkm::cont::ArrayHandleCounting<vtkm::Id> indices =
|
|
vtkm::cont::make_ArrayHandleCounting(vtkm::Id(0), vtkm::Id(1), passFlags.GetNumberOfValues());
|
|
vtkm::cont::Algorithm::CopyIf(indices, passFlags, pointIds);
|
|
|
|
// Make CellSetSingleType with VERTEX at each point id
|
|
vtkm::cont::CellSetSingleType<> outCellSet;
|
|
outCellSet.Fill(cellSet.GetNumberOfPoints(), vtkm::CellShapeTagVertex::Id, 1, pointIds);
|
|
|
|
return outCellSet;
|
|
}
|
|
};
|
|
}
|
|
} // namespace vtkm::worklet
|
|
|
|
#endif // vtkm_m_worklet_ThresholdPoints_h
|