mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-06 02:18:58 +00:00
156 lines
5.7 KiB
C++
156 lines
5.7 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 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 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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#include <vtkm/cont/DynamicCellSet.h>
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#include <vtkm/worklet/Gradient.h>
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namespace
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{
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//-----------------------------------------------------------------------------
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template <typename HandleType>
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inline void add_field(vtkm::filter::Result& result,
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const HandleType& handle,
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const std::string name)
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{
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const vtkm::cont::Field::AssociationEnum assoc = result.GetField().GetAssociation();
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if ((assoc == vtkm::cont::Field::ASSOC_WHOLE_MESH) || (assoc == vtkm::cont::Field::ASSOC_POINTS))
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{
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vtkm::cont::Field field(name, assoc, handle);
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result.GetDataSet().AddField(field);
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}
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else
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{
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vtkm::cont::Field field(name, assoc, result.GetField().GetAssocCellSet(), handle);
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result.GetDataSet().AddField(field);
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}
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}
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//-----------------------------------------------------------------------------
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template <typename T, typename S, typename DeviceAdapter>
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inline void transpose_3x3(vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Vec<T, 3>, 3>, S>& field,
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DeviceAdapter adapter)
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{
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vtkm::worklet::gradient::Transpose3x3<T> transpose;
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transpose.Run(field, adapter);
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}
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//-----------------------------------------------------------------------------
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template <typename T, typename S, typename DeviceAdapter>
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inline void transpose_3x3(vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>, S>&, DeviceAdapter)
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{ //This is not a 3x3 matrix so no transpose needed
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}
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} //namespace
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namespace vtkm
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{
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namespace filter
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{
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//-----------------------------------------------------------------------------
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Gradient::Gradient()
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: ComputePointGradient(false)
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, ComputeVorticity(false)
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, ComputeQCriterion(false)
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, StoreGradient(true)
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, RowOrdering(true)
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, GradientsName("Gradients")
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, DivergenceName("Divergence")
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, VorticityName("Vorticity")
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, QCriterionName("QCriterion")
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{
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}
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//-----------------------------------------------------------------------------
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template <typename T, typename StorageType, typename DerivedPolicy, typename DeviceAdapter>
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inline vtkm::filter::Result Gradient::DoExecute(
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const vtkm::cont::DataSet& input,
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const vtkm::cont::ArrayHandle<T, StorageType>& inField,
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const vtkm::filter::FieldMetadata& fieldMetadata,
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const vtkm::filter::PolicyBase<DerivedPolicy>& policy,
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const DeviceAdapter& adapter)
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{
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if (!fieldMetadata.IsPointField())
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{
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//we currently only support point fields, as we need to write the
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//worklet to efficiently map a cell field to the points of a cell
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//without doing a memory explosion
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return vtkm::filter::Result();
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}
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const vtkm::cont::DynamicCellSet& cells = input.GetCellSet(this->GetActiveCellSetIndex());
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const vtkm::cont::CoordinateSystem& coords =
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input.GetCoordinateSystem(this->GetActiveCoordinateSystemIndex());
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std::string outputName = this->GetOutputFieldName();
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if (outputName.empty())
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{
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outputName = this->GradientsName;
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}
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//todo: we need to ask the policy what storage type we should be using
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//If the input is implicit, we should know what to fall back to
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vtkm::worklet::GradientOutputFields<T> gradientfields(this->GetComputeGradient(),
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this->GetComputeDivergence(),
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this->GetComputeVorticity(),
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this->GetComputeQCriterion());
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vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>> outArray;
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if (this->ComputePointGradient)
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{
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vtkm::worklet::PointGradient gradient;
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outArray = gradient.Run(
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vtkm::filter::ApplyPolicy(cells, policy), coords, inField, gradientfields, adapter);
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}
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else
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{
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vtkm::worklet::CellGradient gradient;
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outArray = gradient.Run(
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vtkm::filter::ApplyPolicy(cells, policy), coords, inField, gradientfields, adapter);
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}
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if (!this->RowOrdering)
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{
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transpose_3x3(outArray, adapter);
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}
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VTKM_CONSTEXPR bool isVector = std::is_same<typename vtkm::VecTraits<T>::HasMultipleComponents,
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vtkm::VecTraitsTagMultipleComponents>::value;
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vtkm::cont::Field::AssociationEnum fieldAssociation(this->ComputePointGradient
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? vtkm::cont::Field::ASSOC_POINTS
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: vtkm::cont::Field::ASSOC_CELL_SET);
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vtkm::filter::Result result(input, outArray, outputName, fieldAssociation, cells.GetName());
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if (this->GetComputeDivergence() && isVector)
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{
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add_field(result, gradientfields.Divergence, this->GetDivergenceName());
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}
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if (this->GetComputeVorticity() && isVector)
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{
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add_field(result, gradientfields.Vorticity, this->GetVorticityName());
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}
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if (this->GetComputeQCriterion() && isVector)
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{
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add_field(result, gradientfields.QCriterion, this->GetQCriterionName());
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}
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return result;
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}
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}
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} // namespace vtkm::filter
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