mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
99 lines
3.1 KiB
C++
99 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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//
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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_Triangulate_h
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#define vtkm_m_worklet_Triangulate_h
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#include <vtkm/worklet/triangulate/TriangulateExplicit.h>
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#include <vtkm/worklet/triangulate/TriangulateStructured.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 Triangulate
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{
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public:
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//
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// Distribute multiple copies of cell data depending on cells create from original
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//
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struct DistributeCellData : public vtkm::worklet::WorkletMapField
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{
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using ControlSignature = void(FieldIn inIndices, FieldOut outIndices);
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using ScatterType = vtkm::worklet::ScatterCounting;
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template <typename CountArrayType>
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VTKM_CONT static ScatterType MakeScatter(const CountArrayType& countArray)
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{
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return ScatterType(countArray);
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}
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template <typename T>
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VTKM_EXEC void operator()(T inputIndex, T& outputIndex) const
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{
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outputIndex = inputIndex;
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}
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};
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Triangulate()
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: OutCellScatter(vtkm::cont::ArrayHandle<vtkm::IdComponent>{})
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{
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}
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// Triangulate explicit data set, save number of triangulated cells per input
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template <typename CellSetType>
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vtkm::cont::CellSetSingleType<> Run(const CellSetType& cellSet)
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{
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TriangulateExplicit worklet;
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vtkm::cont::ArrayHandle<vtkm::IdComponent> outCellsPerCell;
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vtkm::cont::CellSetSingleType<> result = worklet.Run(cellSet, outCellsPerCell);
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this->OutCellScatter = DistributeCellData::MakeScatter(outCellsPerCell);
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return result;
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}
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// Triangulate structured data set, save number of triangulated cells per input
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vtkm::cont::CellSetSingleType<> Run(const vtkm::cont::CellSetStructured<2>& cellSet)
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{
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TriangulateStructured worklet;
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vtkm::cont::ArrayHandle<vtkm::IdComponent> outCellsPerCell;
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vtkm::cont::CellSetSingleType<> result = worklet.Run(cellSet, outCellsPerCell);
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this->OutCellScatter = DistributeCellData::MakeScatter(outCellsPerCell);
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return result;
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}
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vtkm::cont::CellSetSingleType<> Run(const vtkm::cont::CellSetStructured<3>&)
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{
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throw vtkm::cont::ErrorBadType("CellSetStructured<3> can't be triangulated");
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}
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// Using the saved input to output cells, expand cell data
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template <typename ValueType, typename StorageType>
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vtkm::cont::ArrayHandle<ValueType> ProcessCellField(
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const vtkm::cont::ArrayHandle<ValueType, StorageType>& input) const
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{
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vtkm::cont::ArrayHandle<ValueType> output;
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vtkm::worklet::DispatcherMapField<DistributeCellData> dispatcher(this->OutCellScatter);
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dispatcher.Invoke(input, output);
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return output;
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}
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DistributeCellData::ScatterType GetOutCellScatter() const { return this->OutCellScatter; }
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private:
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DistributeCellData::ScatterType OutCellScatter;
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};
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}
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} // namespace vtkm::worklet
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#endif // vtkm_m_worklet_Triangulate_h
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