mirror of
https://gitlab.kitware.com/vtk/vtk-m
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94 lines
3.7 KiB
C++
94 lines
3.7 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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//
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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_Pathline_hxx
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#define vtk_m_filter_Pathline_hxx
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#include <vtkm/filter/Pathline.h>
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#include <vtkm/cont/ArrayCopy.h>
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#include <vtkm/cont/ArrayHandleIndex.h>
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#include <vtkm/cont/ErrorFilterExecution.h>
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#include <vtkm/filter/particleadvection/BoundsMap.h>
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#include <vtkm/filter/particleadvection/DataSetIntegrator.h>
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#include <vtkm/filter/particleadvection/StreamlineAlgorithm.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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//-----------------------------------------------------------------------------
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inline VTKM_CONT Pathline::Pathline()
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: vtkm::filter::FilterDataSetWithField<Pathline>()
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, UseThreadedAlgorithm(false)
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{
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}
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//-----------------------------------------------------------------------------
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inline VTKM_CONT void Pathline::SetSeeds(vtkm::cont::ArrayHandle<vtkm::Particle>& seeds)
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{
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this->Seeds = seeds;
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}
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//-----------------------------------------------------------------------------
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template <typename DerivedPolicy>
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inline VTKM_CONT vtkm::cont::PartitionedDataSet Pathline::PrepareForExecution(
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const vtkm::cont::PartitionedDataSet& input,
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const vtkm::filter::PolicyBase<DerivedPolicy>&)
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{
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if (this->GetUseCoordinateSystemAsField())
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throw vtkm::cont::ErrorFilterExecution("Coordinate system as field not supported");
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if (this->Seeds.GetNumberOfValues() == 0)
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throw vtkm::cont::ErrorFilterExecution("No seeds provided.");
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if (this->NextDataSet.GetNumberOfPartitions() != input.GetNumberOfPartitions())
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throw vtkm::cont::ErrorFilterExecution("Number of partitions do not match");
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if (!(this->PreviousTime < this->NextTime))
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throw vtkm::cont::ErrorFilterExecution("Previous time must be less than Next time.");
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std::string activeField = this->GetActiveFieldName();
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vtkm::filter::particleadvection::BoundsMap boundsMap(input);
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using DSIType = vtkm::filter::particleadvection::TemporalDataSetIntegrator;
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std::vector<DSIType> dsi;
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for (vtkm::Id i = 0; i < input.GetNumberOfPartitions(); i++)
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{
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vtkm::Id blockId = boundsMap.GetLocalBlockId(i);
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auto dsPrev = input.GetPartition(i);
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auto dsNext = this->NextDataSet.GetPartition(i);
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if (!dsPrev.HasPointField(activeField) || !dsNext.HasPointField(activeField))
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throw vtkm::cont::ErrorFilterExecution("Unsupported field assocation");
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dsi.push_back(
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DSIType(dsPrev, this->PreviousTime, dsNext, this->NextTime, blockId, activeField));
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}
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using AlgorithmType = vtkm::filter::particleadvection::PathlineAlgorithm;
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using ThreadedAlgorithmType = vtkm::filter::particleadvection::PathlineThreadedAlgorithm;
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if (this->GetUseThreadedAlgorithm())
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return vtkm::filter::particleadvection::RunAlgo<DSIType, ThreadedAlgorithmType>(
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boundsMap, dsi, this->NumberOfSteps, this->StepSize, this->Seeds);
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else
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return vtkm::filter::particleadvection::RunAlgo<DSIType, AlgorithmType>(
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boundsMap, dsi, this->NumberOfSteps, this->StepSize, this->Seeds);
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}
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//-----------------------------------------------------------------------------
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template <typename DerivedPolicy>
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inline VTKM_CONT bool Pathline::MapFieldOntoOutput(vtkm::cont::DataSet&,
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const vtkm::cont::Field&,
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vtkm::filter::PolicyBase<DerivedPolicy>)
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{
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return false;
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}
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}
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} // namespace vtkm::filter
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#endif
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