157 lines
4.4 KiB
C++
157 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_worklet_ParticleAdvection_h
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#define vtk_m_worklet_ParticleAdvection_h
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#include <vtkm/Types.h>
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#include <vtkm/cont/ArrayCopy.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/Invoker.h>
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#include <vtkm/worklet/particleadvection/ParticleAdvectionWorklets.h>
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namespace vtkm
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{
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namespace worklet
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{
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namespace detail
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{
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class CopyToParticle : public vtkm::worklet::WorkletMapField
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{
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public:
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using ControlSignature =
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void(FieldIn pt, FieldIn id, FieldIn time, FieldIn step, FieldOut particle);
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using ExecutionSignature = void(_1, _2, _3, _4, _5);
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using InputDomain = _1;
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VTKM_EXEC void operator()(const vtkm::Vec3f& pt,
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const vtkm::Id& id,
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const vtkm::FloatDefault& time,
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const vtkm::Id& step,
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vtkm::Particle& particle) const
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{
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particle.Pos = pt;
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particle.ID = id;
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particle.Time = time;
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particle.NumSteps = step;
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particle.Status.SetOk();
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}
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};
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} //detail
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struct ParticleAdvectionResult
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{
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ParticleAdvectionResult()
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: Particles()
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{
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}
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ParticleAdvectionResult(const vtkm::cont::ArrayHandle<vtkm::Particle>& p)
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: Particles(p)
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{
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}
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vtkm::cont::ArrayHandle<vtkm::Particle> Particles;
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};
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class ParticleAdvection
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{
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public:
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ParticleAdvection() {}
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template <typename IntegratorType, typename ParticleStorage>
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ParticleAdvectionResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Particle, ParticleStorage>& particles,
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vtkm::Id MaxSteps)
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{
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vtkm::worklet::particleadvection::ParticleAdvectionWorklet<IntegratorType> worklet;
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worklet.Run(it, particles, MaxSteps);
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return ParticleAdvectionResult(particles);
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}
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template <typename IntegratorType, typename PointStorage>
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ParticleAdvectionResult Run(const IntegratorType& it,
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const vtkm::cont::ArrayHandle<vtkm::Vec3f, PointStorage>& points,
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vtkm::Id MaxSteps)
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{
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vtkm::worklet::particleadvection::ParticleAdvectionWorklet<IntegratorType> worklet;
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vtkm::cont::ArrayHandle<vtkm::Particle> particles;
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vtkm::cont::ArrayHandle<vtkm::Id> step, ids;
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vtkm::cont::ArrayHandle<vtkm::FloatDefault> time;
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vtkm::cont::Invoker invoke;
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vtkm::Id numPts = points.GetNumberOfValues();
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vtkm::cont::ArrayHandleConstant<vtkm::Id> s(0, numPts);
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vtkm::cont::ArrayHandleConstant<vtkm::FloatDefault> t(0, numPts);
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vtkm::cont::ArrayHandleCounting<vtkm::Id> id(0, 1, numPts);
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//Copy input to vtkm::Particle
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vtkm::cont::ArrayCopy(s, step);
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vtkm::cont::ArrayCopy(t, time);
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vtkm::cont::ArrayCopy(id, ids);
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invoke(detail::CopyToParticle{}, points, ids, time, step, particles);
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worklet.Run(it, particles, MaxSteps);
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return ParticleAdvectionResult(particles);
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}
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};
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struct StreamlineResult
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{
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StreamlineResult()
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: Particles()
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, Positions()
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, PolyLines()
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{
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}
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StreamlineResult(const vtkm::cont::ArrayHandle<vtkm::Particle>& part,
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const vtkm::cont::ArrayHandle<vtkm::Vec3f>& pos,
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const vtkm::cont::CellSetExplicit<>& lines)
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: Particles(part)
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, Positions(pos)
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, PolyLines(lines)
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{
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}
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vtkm::cont::ArrayHandle<vtkm::Particle> Particles;
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vtkm::cont::ArrayHandle<vtkm::Vec3f> Positions;
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vtkm::cont::CellSetExplicit<> PolyLines;
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};
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class Streamline
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{
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public:
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Streamline() {}
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template <typename IntegratorType, typename ParticleStorage>
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StreamlineResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Particle, ParticleStorage>& particles,
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vtkm::Id MaxSteps)
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{
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vtkm::worklet::particleadvection::StreamlineWorklet<IntegratorType> worklet;
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vtkm::cont::ArrayHandle<vtkm::Vec3f> positions;
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vtkm::cont::CellSetExplicit<> polyLines;
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worklet.Run(it, particles, MaxSteps, positions, polyLines);
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return StreamlineResult(particles, positions, polyLines);
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}
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};
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}
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}
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#endif // vtk_m_worklet_ParticleAdvection_h
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