mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
7b53a52e6a
Previously ExtractStructured filter would take ~45sec to compile with gcc 9.2 and now takes ~15sec.
134 lines
4.5 KiB
C++
134 lines
4.5 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_ExtractStructured_h
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#define vtk_m_filter_ExtractStructured_h
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#include <vtkm/filter/vtkm_filter_export.h>
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#include <vtkm/filter/FilterDataSet.h>
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#include <vtkm/worklet/ExtractStructured.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 Select piece (e.g., volume of interest) and/or subsample structured points dataset
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///
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/// Select or subsample a portion of an input structured dataset. The selected
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/// portion of interested is referred to as the Volume Of Interest, or VOI.
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/// The output of this filter is a structured dataset. The filter treats input
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/// data of any topological dimension (i.e., point, line, plane, or volume) and
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/// can generate output data of any topological dimension.
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///
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/// To use this filter set the VOI ivar which are i-j-k min/max indices that
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/// specify a rectangular region in the data. (Note that these are 0-offset.)
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/// You can also specify a sampling rate to subsample the data.
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///
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/// Typical applications of this filter are to extract a slice from a volume
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/// for image processing, subsampling large volumes to reduce data size, or
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/// extracting regions of a volume with interesting data.
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///
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class VTKM_ALWAYS_EXPORT ExtractStructured : public vtkm::filter::FilterDataSet<ExtractStructured>
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{
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public:
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VTKM_FILTER_EXPORT
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ExtractStructured();
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// Set the bounding box for the volume of interest
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VTKM_CONT
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vtkm::RangeId3 GetVOI() const { return this->VOI; }
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VTKM_CONT
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void SetVOI(vtkm::Id i0, vtkm::Id i1, vtkm::Id j0, vtkm::Id j1, vtkm::Id k0, vtkm::Id k1)
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{
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this->VOI = vtkm::RangeId3(i0, i1, j0, j1, k0, k1);
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}
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VTKM_CONT
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void SetVOI(vtkm::Id extents[6]) { this->VOI = vtkm::RangeId3(extents); }
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VTKM_CONT
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void SetVOI(vtkm::Id3 minPoint, vtkm::Id3 maxPoint)
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{
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this->VOI = vtkm::RangeId3(minPoint, maxPoint);
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}
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VTKM_CONT
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void SetVOI(const vtkm::RangeId3& voi) { this->VOI = voi; }
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/// Get the Sampling rate
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VTKM_CONT
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vtkm::Id3 GetSampleRate() const { return this->SampleRate; }
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/// Set the Sampling rate
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VTKM_CONT
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void SetSampleRate(vtkm::Id i, vtkm::Id j, vtkm::Id k) { this->SampleRate = vtkm::Id3(i, j, k); }
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/// Set the Sampling rate
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VTKM_CONT
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void SetSampleRate(vtkm::Id3 sampleRate) { this->SampleRate = sampleRate; }
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/// Get if we should include the outer boundary on a subsample
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VTKM_CONT
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bool GetIncludeBoundary() { return this->IncludeBoundary; }
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/// Set if we should include the outer boundary on a subsample
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VTKM_CONT
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void SetIncludeBoundary(bool value) { this->IncludeBoundary = value; }
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VTKM_CONT
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void SetIncludeOffset(bool value) { this->IncludeOffset = value; }
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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 new field onto the resulting dataset after running the filter
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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>)
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{
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if (fieldMeta.IsPointField())
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{
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vtkm::cont::ArrayHandle<T> output = this->Worklet.ProcessPointField(input);
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result.AddField(fieldMeta.AsField(output));
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return true;
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}
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// cell data must be scattered to the cells created per input cell
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if (fieldMeta.IsCellField())
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{
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vtkm::cont::ArrayHandle<T> output = this->Worklet.ProcessCellField(input);
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result.AddField(fieldMeta.AsField(output));
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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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vtkm::RangeId3 VOI;
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vtkm::Id3 SampleRate = { 1, 1, 1 };
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bool IncludeBoundary;
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bool IncludeOffset;
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vtkm::worklet::ExtractStructured Worklet;
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};
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#ifndef vtkm_filter_ExtractStructured_cxx
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VTKM_FILTER_EXPORT_EXECUTE_METHOD(ExtractStructured);
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#endif
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}
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} // namespace vtkm::filter
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#include <vtkm/filter/ExtractStructured.hxx>
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#endif // vtk_m_filter_ExtractStructured_h
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