mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 02:55:47 +00:00
bddad9b386
Now that the dispatcher does its own TryExecute, filters do not need to do that. This change requires all worklets called by filters to be able to execute without knowing the device a priori.
123 lines
4.3 KiB
C++
123 lines
4.3 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 2017 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2017 UT-Battelle, LLC.
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// Copyright 2017 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/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/worklet/particleadvection/GridEvaluators.h>
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#include <vtkm/worklet/particleadvection/Integrators.h>
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#include <vtkm/worklet/particleadvection/Particles.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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namespace
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{
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template <typename CellSetList>
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bool IsCellSupported(const vtkm::cont::DynamicCellSetBase<CellSetList>& cellset)
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{
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//We only support 3D structured for now.
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if (cellset.template IsType<vtkm::cont::CellSetStructured<3>>())
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return true;
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return false;
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}
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} // anonymous namespace
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//-----------------------------------------------------------------------------
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inline VTKM_CONT Streamline::Streamline()
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: vtkm::filter::FilterDataSetWithField<Streamline>()
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, Worklet()
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{
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}
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//-----------------------------------------------------------------------------
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inline VTKM_CONT void Streamline::SetSeeds(
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::FloatDefault, 3>>& 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 T, typename StorageType, typename DerivedPolicy>
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inline VTKM_CONT vtkm::cont::DataSet Streamline::DoExecute(
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const vtkm::cont::DataSet& input,
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>, StorageType>& field,
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const vtkm::filter::FieldMetadata& fieldMeta,
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const vtkm::filter::PolicyBase<DerivedPolicy>&)
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{
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//Check for some basics.
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if (this->Seeds.GetNumberOfValues() == 0)
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{
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throw vtkm::cont::ErrorFilterExecution("No seeds provided.");
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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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if (!IsCellSupported(cells))
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{
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throw vtkm::cont::ErrorFilterExecution("Cell type not supported.");
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}
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if (!fieldMeta.IsPointField())
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{
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throw vtkm::cont::ErrorFilterExecution("Point field expected.");
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}
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//todo: add check for rectilinear.
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using FieldHandle = vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>, StorageType>;
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using RGEvalType = vtkm::worklet::particleadvection::UniformGridEvaluate<FieldHandle>;
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using RK4RGType = vtkm::worklet::particleadvection::RK4Integrator<RGEvalType>;
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//RGEvalType eval(input.GetCoordinateSystem(), input.GetCellSet(0), field);
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RGEvalType eval(coords, cells, field);
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RK4RGType rk4(eval, static_cast<T>(this->StepSize));
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vtkm::worklet::Streamline streamline;
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vtkm::worklet::StreamlineResult res;
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vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>> seedArray;
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vtkm::cont::ArrayCopy(this->Seeds, seedArray);
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res = Worklet.Run(rk4, seedArray, this->NumberOfSteps);
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vtkm::cont::DataSet outData;
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vtkm::cont::CoordinateSystem outputCoords("coordinates", res.positions);
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outData.AddCellSet(res.polyLines);
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outData.AddCoordinateSystem(outputCoords);
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return outData;
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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 bool Streamline::DoMapField(vtkm::cont::DataSet&,
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const vtkm::cont::ArrayHandle<T, StorageType>&,
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const vtkm::filter::FieldMetadata&,
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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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