mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-16 17:22:55 +00:00
99829cf617
The member variables of the `vtkm::Particle` classes are now hidden. This means that external code will not be directly able to access member variables like `Pos`, `Time`, and `ID`. Instead, these need to be retrieved and changed through accessor methods. This follows standard C++ principles. It also helps us future-proof the classes. It means that we can provide subclasses or alternate forms of `Particle` that operate differently. It also makes it possible to change interfaces while maintaining a deprecated interface.
137 lines
4.4 KiB
C++
137 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_cont_ParticleArrayCopy_hxx
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#define vtk_m_cont_ParticleArrayCopy_hxx
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#include <vtkm/cont/Algorithm.h>
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#include <vtkm/cont/ArrayHandleTransform.h>
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#include <vtkm/cont/Invoker.h>
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#include <vtkm/cont/ParticleArrayCopy.h>
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#include <vtkm/worklet/WorkletMapField.h>
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namespace vtkm
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{
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namespace cont
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{
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namespace detail
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{
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template <typename ParticleType>
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struct ExtractPositionFunctor
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{
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VTKM_EXEC_CONT
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vtkm::Vec3f operator()(const ParticleType& p) const { return p.GetPosition(); }
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};
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template <typename ParticleType>
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struct ExtractTerminatedFunctor
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{
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VTKM_EXEC_CONT
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bool operator()(const ParticleType& p) const { return p.GetStatus().CheckTerminate(); }
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};
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template <typename ParticleType>
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struct CopyParticleAllWorklet : public vtkm::worklet::WorkletMapField
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{
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using ControlSignature = void(FieldIn inParticle,
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FieldOut outPos,
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FieldOut outID,
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FieldOut outSteps,
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FieldOut outStatus,
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FieldOut outTime);
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VTKM_EXEC void operator()(const ParticleType& inParticle,
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vtkm::Vec3f& outPos,
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vtkm::Id& outID,
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vtkm::Id& outSteps,
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vtkm::ParticleStatus& outStatus,
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vtkm::FloatDefault& outTime) const
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{
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outPos = inParticle.GetPosition();
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outID = inParticle.GetID();
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outSteps = inParticle.GetNumberOfSteps();
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outStatus = inParticle.GetStatus();
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outTime = inParticle.GetTime();
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}
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};
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} // namespace detail
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template <typename ParticleType>
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VTKM_ALWAYS_EXPORT inline void ParticleArrayCopy(
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const vtkm::cont::ArrayHandle<ParticleType, vtkm::cont::StorageTagBasic>& inP,
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vtkm::cont::ArrayHandle<vtkm::Vec3f, vtkm::cont::StorageTagBasic>& outPos,
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bool CopyTerminatedOnly)
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{
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auto posTrn =
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vtkm::cont::make_ArrayHandleTransform(inP, detail::ExtractPositionFunctor<ParticleType>());
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if (CopyTerminatedOnly)
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{
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auto termTrn =
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vtkm::cont::make_ArrayHandleTransform(inP, detail::ExtractTerminatedFunctor<ParticleType>());
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vtkm::cont::Algorithm::CopyIf(posTrn, termTrn, outPos);
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}
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else
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vtkm::cont::Algorithm::Copy(posTrn, outPos);
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}
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template <typename ParticleType>
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VTKM_ALWAYS_EXPORT inline void ParticleArrayCopy(
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const std::vector<vtkm::cont::ArrayHandle<ParticleType, vtkm::cont::StorageTagBasic>>& inputs,
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vtkm::cont::ArrayHandle<vtkm::Vec3f, vtkm::cont::StorageTagBasic>& outPos)
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{
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vtkm::Id numParticles = 0;
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for (const auto& v : inputs)
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numParticles += v.GetNumberOfValues();
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outPos.Allocate(numParticles);
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vtkm::Id idx = 0;
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for (const auto& v : inputs)
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{
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auto posTrn =
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vtkm::cont::make_ArrayHandleTransform(v, detail::ExtractPositionFunctor<ParticleType>());
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vtkm::Id n = posTrn.GetNumberOfValues();
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vtkm::cont::Algorithm::CopySubRange(posTrn, 0, n, outPos, idx);
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idx += n;
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}
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}
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/// \brief Copy all fields in vtkm::Particle to standard types.
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///
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/// Given an \c ArrayHandle of vtkm::Particle, this function copies the
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/// position, ID, number of steps, status and time into a separate
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/// \c ArrayHandle.
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///
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template <typename ParticleType>
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VTKM_ALWAYS_EXPORT inline void ParticleArrayCopy(
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const vtkm::cont::ArrayHandle<ParticleType, vtkm::cont::StorageTagBasic>& inP,
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vtkm::cont::ArrayHandle<vtkm::Vec3f, vtkm::cont::StorageTagBasic>& outPos,
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vtkm::cont::ArrayHandle<vtkm::Id, vtkm::cont::StorageTagBasic>& outID,
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vtkm::cont::ArrayHandle<vtkm::Id, vtkm::cont::StorageTagBasic>& outSteps,
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vtkm::cont::ArrayHandle<vtkm::ParticleStatus, vtkm::cont::StorageTagBasic>& outStatus,
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vtkm::cont::ArrayHandle<vtkm::FloatDefault, vtkm::cont::StorageTagBasic>& outTime)
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{
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vtkm::cont::Invoker invoke;
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detail::CopyParticleAllWorklet<ParticleType> worklet;
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invoke(worklet, inP, outPos, outID, outSteps, outStatus, outTime);
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}
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}
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} // namespace vtkm::cont
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#endif //vtk_m_cont_ParticleArrayCopy_hxx
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