188 lines
6.4 KiB
C++
188 lines
6.4 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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// 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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// Copyright 2016 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_filter_CleanGrid_hxx
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#define vtk_m_filter_CleanGrid_hxx
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#include <vtkm/filter/CleanGrid.h>
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#include <vtkm/worklet/CellDeepCopy.h>
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#include <vtkm/worklet/RemoveUnusedPoints.h>
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#include <vector>
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namespace vtkm
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{
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namespace filter
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{
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inline VTKM_CONT CleanGrid::CleanGrid()
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: CompactPointFields(true)
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, MergePoints(true)
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, Tolerance(1.0e-6)
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, ToleranceIsAbsolute(false)
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, FastMerge(true)
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{
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}
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template <typename Policy>
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inline VTKM_CONT vtkm::cont::DataSet CleanGrid::DoExecute(const vtkm::cont::DataSet& inData,
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vtkm::filter::PolicyBase<Policy> policy)
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{
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using CellSetType = vtkm::cont::CellSetExplicit<>;
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using VecId = std::vector<CellSetType>::size_type;
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VecId numCellSets = static_cast<VecId>(inData.GetNumberOfCellSets());
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std::vector<CellSetType> outputCellSets(numCellSets);
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// Do a deep copy of the cells to new CellSetExplicit structures
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for (VecId cellSetIndex = 0; cellSetIndex < numCellSets; ++cellSetIndex)
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{
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vtkm::cont::DynamicCellSet inCellSet =
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inData.GetCellSet(static_cast<vtkm::IdComponent>(cellSetIndex));
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vtkm::worklet::CellDeepCopy::Run(vtkm::filter::ApplyPolicy(inCellSet, policy),
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outputCellSets[cellSetIndex]);
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}
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VecId numCoordSystems = static_cast<VecId>(inData.GetNumberOfCoordinateSystems());
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std::vector<vtkm::cont::CoordinateSystem> outputCoordinateSystems(numCoordSystems);
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// Start with a shallow copy of the coordinate systems
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for (VecId coordSystemIndex = 0; coordSystemIndex < numCoordSystems; ++coordSystemIndex)
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{
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outputCoordinateSystems[coordSystemIndex] =
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inData.GetCoordinateSystem(static_cast<vtkm::IdComponent>(coordSystemIndex));
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}
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// Optionally adjust the cell set indices to remove all unused points
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if (this->GetCompactPointFields())
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{
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this->PointCompactor.FindPointsStart();
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for (VecId cellSetIndex = 0; cellSetIndex < numCellSets; cellSetIndex++)
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{
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this->PointCompactor.FindPoints(outputCellSets[cellSetIndex]);
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}
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this->PointCompactor.FindPointsEnd();
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for (VecId cellSetIndex = 0; cellSetIndex < numCellSets; ++cellSetIndex)
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{
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outputCellSets[cellSetIndex] = this->PointCompactor.MapCellSet(outputCellSets[cellSetIndex]);
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}
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for (VecId coordSystemIndex = 0; coordSystemIndex < numCoordSystems; ++coordSystemIndex)
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{
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outputCoordinateSystems[coordSystemIndex] =
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vtkm::cont::CoordinateSystem(outputCoordinateSystems[coordSystemIndex].GetName(),
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this->PointCompactor.MapPointFieldDeep(
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outputCoordinateSystems[coordSystemIndex].GetData()));
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}
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}
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// Optionally find and merge coincident points
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if (this->GetMergePoints())
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{
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vtkm::cont::CoordinateSystem activeCoordSystem =
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outputCoordinateSystems[static_cast<VecId>(this->GetActiveCoordinateSystemIndex())];
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vtkm::Bounds bounds = activeCoordSystem.GetBounds();
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vtkm::Float64 delta = this->GetTolerance();
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if (!this->GetToleranceIsAbsolute())
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{
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delta *=
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vtkm::Magnitude(vtkm::make_Vec(bounds.X.Length(), bounds.Y.Length(), bounds.Z.Length()));
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}
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auto coordArray = activeCoordSystem.GetData();
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this->PointMerger.Run(delta, this->GetFastMerge(), bounds, coordArray);
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activeCoordSystem = vtkm::cont::CoordinateSystem(activeCoordSystem.GetName(), coordArray);
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for (VecId coordSystemIndex = 0; coordSystemIndex < numCoordSystems; ++coordSystemIndex)
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{
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if (coordSystemIndex == static_cast<VecId>(this->GetActiveCoordinateSystemIndex()))
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{
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outputCoordinateSystems[coordSystemIndex] = activeCoordSystem;
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}
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else
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{
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outputCoordinateSystems[coordSystemIndex] = vtkm::cont::CoordinateSystem(
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outputCoordinateSystems[coordSystemIndex].GetName(),
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this->PointMerger.MapPointField(outputCoordinateSystems[coordSystemIndex].GetData()));
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}
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}
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for (VecId cellSetIndex = 0; cellSetIndex < numCellSets; ++cellSetIndex)
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{
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outputCellSets[cellSetIndex] = this->PointMerger.MapCellSet(outputCellSets[cellSetIndex]);
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}
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}
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// Construct resulting data set with new cell sets
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vtkm::cont::DataSet outData;
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for (VecId cellSetIndex = 0; cellSetIndex < numCellSets; cellSetIndex++)
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{
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outData.AddCellSet(outputCellSets[cellSetIndex]);
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}
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// Pass the coordinate systems
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for (VecId coordSystemIndex = 0; coordSystemIndex < numCoordSystems; ++coordSystemIndex)
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{
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outData.AddCoordinateSystem(outputCoordinateSystems[coordSystemIndex]);
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}
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return outData;
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}
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template <typename ValueType, typename Storage, typename Policy>
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inline VTKM_CONT bool CleanGrid::DoMapField(
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vtkm::cont::DataSet& result,
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const vtkm::cont::ArrayHandle<ValueType, Storage>& input,
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const vtkm::filter::FieldMetadata& fieldMeta,
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vtkm::filter::PolicyBase<Policy>)
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{
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if (fieldMeta.IsPointField() && (this->GetCompactPointFields() || this->GetMergePoints()))
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{
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vtkm::cont::ArrayHandle<ValueType> compactedArray;
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if (this->GetCompactPointFields())
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{
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compactedArray = this->PointCompactor.MapPointFieldDeep(input);
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if (this->GetMergePoints())
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{
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compactedArray = this->PointMerger.MapPointField(compactedArray);
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}
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}
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else if (this->GetMergePoints())
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{
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compactedArray = this->PointMerger.MapPointField(input);
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}
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result.AddField(fieldMeta.AsField(compactedArray));
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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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}
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return true;
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}
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}
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}
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#endif //vtk_m_filter_CleanGrid_hxx
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