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https://gitlab.kitware.com/vtk/vtk-m
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f06a5db9af
d7ab1a608 Improve parallelization when compiling filter tests 142d151ca Update CONTRIBUTING.md to cover gitlab piplines 5bc09b976 Add gitlab-ci infrastructure ef7ef5fb2 Add documentation for the what/why of using Gitlab ci 36d1a2d6a Add dockerfiles to be used by VTK-m Gitlab ci b16e4fc17 Add ECP CI support to vtk-m Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !1987
130 lines
4.4 KiB
C++
130 lines
4.4 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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//
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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_Gradient_hxx
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#define vtk_m_filter_Gradient_hxx
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#include <vtkm/cont/DynamicCellSet.h>
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#include <vtkm/cont/ErrorFilterExecution.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 T, typename S>
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inline void transpose_3x3(vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Vec<T, 3>, 3>, S>& field)
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{
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vtkm::worklet::gradient::Transpose3x3<T> transpose;
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transpose.Run(field);
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}
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//-----------------------------------------------------------------------------
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template <typename T, typename S>
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inline void transpose_3x3(vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>, S>&)
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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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template <typename T, typename StorageType, typename DerivedPolicy>
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inline vtkm::cont::DataSet 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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vtkm::filter::PolicyBase<DerivedPolicy> policy)
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{
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if (!fieldMetadata.IsPointField())
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{
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throw vtkm::cont::ErrorFilterExecution("Point field expected.");
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}
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constexpr bool isVector = std::is_same<typename vtkm::VecTraits<T>::HasMultipleComponents,
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vtkm::VecTraitsTagMultipleComponents>::value;
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if (GetComputeQCriterion() && !isVector)
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{
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throw vtkm::cont::ErrorFilterExecution("scalar gradients can't generate qcriterion");
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}
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if (GetComputeVorticity() && !isVector)
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{
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throw vtkm::cont::ErrorFilterExecution("scalar gradients can't generate vorticity");
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}
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const vtkm::cont::DynamicCellSet& cells = input.GetCellSet();
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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::ApplyPolicyCellSet(cells, policy), coords, inField, gradientfields);
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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::ApplyPolicyCellSet(cells, policy), coords, inField, gradientfields);
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}
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if (!this->RowOrdering)
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{
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transpose_3x3(outArray);
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}
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vtkm::cont::Field::Association fieldAssociation(this->ComputePointGradient
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? vtkm::cont::Field::Association::POINTS
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: vtkm::cont::Field::Association::CELL_SET);
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vtkm::cont::DataSet result;
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result.CopyStructure(input);
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result.AddField(vtkm::cont::Field{ outputName, fieldAssociation, outArray });
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if (this->GetComputeDivergence() && isVector)
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{
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result.AddField(
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vtkm::cont::Field{ this->GetDivergenceName(), fieldAssociation, gradientfields.Divergence });
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}
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if (this->GetComputeVorticity() && isVector)
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{
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result.AddField(
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vtkm::cont::Field{ this->GetVorticityName(), fieldAssociation, gradientfields.Vorticity });
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}
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if (this->GetComputeQCriterion() && isVector)
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{
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result.AddField(
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vtkm::cont::Field{ this->GetQCriterionName(), fieldAssociation, gradientfields.QCriterion });
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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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#endif
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