mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
a6725b3acd
Unfortunately, this introduces a backward-incompatible change with the filters that use ImplicitFunctions. Before, they would get an ImplicitFunctionHandle. This class is deprecated, and there is no easy way to get back the actual type of implicit function stored in it.
118 lines
3.9 KiB
C++
118 lines
3.9 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 vtkm_m_worklet_ExtractPoints_h
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#define vtkm_m_worklet_ExtractPoints_h
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#include <vtkm/worklet/DispatcherMapTopology.h>
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#include <vtkm/worklet/WorkletMapTopology.h>
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#include <vtkm/cont/Algorithm.h>
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#include <vtkm/cont/ArrayCopy.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/CoordinateSystem.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/ImplicitFunction.h>
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namespace vtkm
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{
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namespace worklet
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{
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class ExtractPoints
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{
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public:
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////////////////////////////////////////////////////////////////////////////////////
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// Worklet to identify points within volume of interest
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class ExtractPointsByVOI : public vtkm::worklet::WorkletVisitPointsWithCells
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{
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public:
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using ControlSignature = void(CellSetIn cellset,
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FieldInPoint coordinates,
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ExecObject function,
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FieldOutPoint passFlags);
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using ExecutionSignature = _4(_2, _3);
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VTKM_CONT
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ExtractPointsByVOI(bool extractInside)
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: passValue(extractInside)
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, failValue(!extractInside)
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{
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}
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template <typename ImplicitFunction>
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VTKM_EXEC bool operator()(const vtkm::Vec3f_64& coordinate,
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const ImplicitFunction& function) const
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{
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bool pass = passValue;
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vtkm::Float64 value = function.Value(coordinate);
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if (value > 0)
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{
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pass = failValue;
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}
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return pass;
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}
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private:
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bool passValue;
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bool failValue;
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};
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////////////////////////////////////////////////////////////////////////////////////
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// Extract points by id creates new cellset of vertex cells
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template <typename CellSetType>
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vtkm::cont::CellSetSingleType<> Run(const CellSetType& cellSet,
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const vtkm::cont::ArrayHandle<vtkm::Id>& pointIds)
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{
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vtkm::cont::ArrayCopy(pointIds, this->ValidPointIds);
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// Make CellSetSingleType with VERTEX at each point id
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vtkm::cont::CellSetSingleType<> outCellSet;
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outCellSet.Fill(
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cellSet.GetNumberOfPoints(), vtkm::CellShapeTagVertex::Id, 1, this->ValidPointIds);
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return outCellSet;
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}
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////////////////////////////////////////////////////////////////////////////////////
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// Extract points by implicit function
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template <typename CellSetType, typename CoordinateType, typename ImplicitFunction>
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vtkm::cont::CellSetSingleType<> Run(const CellSetType& cellSet,
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const CoordinateType& coordinates,
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const ImplicitFunction& implicitFunction,
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bool extractInside)
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{
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// Worklet output will be a boolean passFlag array
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vtkm::cont::ArrayHandle<bool> passFlags;
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ExtractPointsByVOI worklet(extractInside);
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DispatcherMapTopology<ExtractPointsByVOI> dispatcher(worklet);
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dispatcher.Invoke(cellSet, coordinates, implicitFunction, passFlags);
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vtkm::cont::ArrayHandleCounting<vtkm::Id> indices =
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vtkm::cont::make_ArrayHandleCounting(vtkm::Id(0), vtkm::Id(1), passFlags.GetNumberOfValues());
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vtkm::cont::Algorithm::CopyIf(indices, passFlags, this->ValidPointIds);
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// Make CellSetSingleType with VERTEX at each point id
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vtkm::cont::CellSetSingleType<> outCellSet;
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outCellSet.Fill(
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cellSet.GetNumberOfPoints(), vtkm::CellShapeTagVertex::Id, 1, this->ValidPointIds);
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return outCellSet;
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}
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private:
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vtkm::cont::ArrayHandle<vtkm::Id> ValidPointIds;
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};
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}
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} // namespace vtkm::worklet
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#endif // vtkm_m_worklet_ExtractPoints_h
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