mirror of
https://gitlab.kitware.com/vtk/vtk-m
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112 lines
3.5 KiB
C++
112 lines
3.5 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 vtk_m_filter_ExternalFaces_h
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#define vtk_m_filter_ExternalFaces_h
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#include <vtkm/filter/vtkm_filter_export.h>
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#include <vtkm/filter/CleanGrid.h>
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#include <vtkm/filter/FilterDataSet.h>
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#include <vtkm/worklet/ExternalFaces.h>
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namespace vtkm
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{
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namespace filter
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{
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/// \brief Extract external faces of a geometry
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///
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/// ExternalFaces is a filter that extracts all external faces from a
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/// data set. An external face is defined is defined as a face/side of a cell
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/// that belongs only to one cell in the entire mesh.
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/// @warning
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/// This filter is currently only supports propagation of point properties
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///
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class VTKM_ALWAYS_EXPORT ExternalFaces : public vtkm::filter::FilterDataSet<ExternalFaces>
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{
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public:
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VTKM_FILTER_EXPORT
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ExternalFaces();
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// When CompactPoints is set, instead of copying the points and point fields
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// from the input, the filter will create new compact fields without the
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// unused elements
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VTKM_CONT
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bool GetCompactPoints() const { return this->CompactPoints; }
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VTKM_CONT
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void SetCompactPoints(bool value) { this->CompactPoints = value; }
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// When PassPolyData is set (the default), incoming poly data (0D, 1D, and 2D cells)
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// will be passed to the output external faces data set.
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VTKM_CONT
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bool GetPassPolyData() const { return this->PassPolyData; }
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VTKM_CONT
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void SetPassPolyData(bool value)
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{
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this->PassPolyData = value;
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this->Worklet.SetPassPolyData(value);
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}
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template <typename DerivedPolicy>
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VTKM_CONT vtkm::cont::DataSet DoExecute(const vtkm::cont::DataSet& input,
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vtkm::filter::PolicyBase<DerivedPolicy> policy);
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//Map a new field onto the resulting dataset after running the filter
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//this call is only valid
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template <typename T, typename StorageType, typename DerivedPolicy>
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VTKM_CONT bool DoMapField(vtkm::cont::DataSet& 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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vtkm::filter::PolicyBase<DerivedPolicy> policy)
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{
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if (fieldMeta.IsPointField())
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{
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if (this->CompactPoints)
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{
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return this->Compactor.DoMapField(result, input, fieldMeta, policy);
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}
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else
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{
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result.AddField(fieldMeta.AsField(input));
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return true;
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}
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}
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else if (fieldMeta.IsCellField())
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{
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vtkm::cont::ArrayHandle<T> fieldArray;
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fieldArray = this->Worklet.ProcessCellField(input);
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result.AddField(fieldMeta.AsField(fieldArray));
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return true;
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}
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return false;
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}
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private:
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bool CompactPoints;
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bool PassPolyData;
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VTKM_FILTER_EXPORT vtkm::cont::DataSet GenerateOutput(const vtkm::cont::DataSet& input,
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vtkm::cont::CellSetExplicit<>& outCellSet);
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vtkm::filter::CleanGrid Compactor;
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vtkm::worklet::ExternalFaces Worklet;
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};
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#ifndef vtkm_filter_ExternalFaces_cxx
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VTKM_FILTER_EXPORT_EXECUTE_METHOD(ExternalFaces);
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#endif
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}
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} // namespace vtkm::filter
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#include <vtkm/filter/ExternalFaces.hxx>
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#endif // vtk_m_filter_ExternalFaces_h
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