mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 11:05:44 +00:00
a2602183a4
This will make it easier to support integrators as an ExecObject. One side effect is that the integrators and partical advection are not templated by the type of the field. Regardless of the type of the field, there is probably little reason to compute particle advection with less than 64 bit floats to account for accumulated errors. This will make it easier to use these classes.
326 lines
12 KiB
C++
326 lines
12 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 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 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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#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/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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struct ParticleAdvectionResult
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{
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using ScalarType = vtkm::worklet::particleadvection::ScalarType;
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ParticleAdvectionResult()
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: positions()
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, status()
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, stepsTaken()
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, times()
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{
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}
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ParticleAdvectionResult(const vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>>& pos,
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const vtkm::cont::ArrayHandle<vtkm::Id>& stat,
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const vtkm::cont::ArrayHandle<vtkm::Id>& steps)
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: positions(pos)
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, status(stat)
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, stepsTaken(steps)
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{
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}
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ParticleAdvectionResult(const vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>>& pos,
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const vtkm::cont::ArrayHandle<vtkm::Id>& stat,
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const vtkm::cont::ArrayHandle<vtkm::Id>& steps,
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const vtkm::cont::ArrayHandle<ScalarType>& timeArray)
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: positions(pos)
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, status(stat)
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, stepsTaken(steps)
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, times(timeArray)
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{
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}
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vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>> positions;
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vtkm::cont::ArrayHandle<vtkm::Id> status;
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vtkm::cont::ArrayHandle<vtkm::Id> stepsTaken;
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vtkm::cont::ArrayHandle<ScalarType> times;
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};
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class ParticleAdvection
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{
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public:
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using ScalarType = vtkm::worklet::particleadvection::ScalarType;
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ParticleAdvection() {}
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template <typename IntegratorType,
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typename FieldType,
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typename PointStorage,
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typename DeviceAdapter>
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ParticleAdvectionResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>, PointStorage>& pts,
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const vtkm::Id& nSteps,
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DeviceAdapter tag)
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{
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vtkm::Id numSeeds = static_cast<vtkm::Id>(pts.GetNumberOfValues());
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vtkm::cont::ArrayHandle<vtkm::Id> stepsTaken;
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vtkm::cont::ArrayHandle<ScalarType> timeArray;
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//Allocate status and steps arrays.
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vtkm::cont::ArrayHandleConstant<vtkm::Id> init(0, numSeeds);
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vtkm::cont::ArrayCopy(init, stepsTaken, tag);
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//Allocate memory to store the time for temporal integration.
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vtkm::cont::ArrayHandleConstant<ScalarType> time(0, numSeeds);
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vtkm::cont::ArrayCopy(time, timeArray, tag);
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return Run(it, pts, stepsTaken, timeArray, nSteps, tag);
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}
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template <typename IntegratorType,
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typename FieldType,
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typename PointStorage,
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typename DeviceAdapter>
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ParticleAdvectionResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>, PointStorage>& pts,
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vtkm::cont::ArrayHandle<vtkm::Id>& inputSteps,
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const vtkm::Id& nSteps,
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DeviceAdapter tag)
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{
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vtkm::Id numSeeds = static_cast<vtkm::Id>(pts.GetNumberOfValues());
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vtkm::cont::ArrayHandle<ScalarType> timeArray;
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//Allocate memory to store the time for temporal integration.
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vtkm::cont::ArrayHandleConstant<ScalarType> time(0, numSeeds);
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timeArray.Allocate(numSeeds);
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vtkm::cont::ArrayCopy(time, timeArray, tag);
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return Run(it, pts, inputSteps, timeArray, nSteps, tag);
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}
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template <typename IntegratorType, typename DeviceAdapter>
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ParticleAdvectionResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>>& pts,
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vtkm::cont::ArrayHandle<vtkm::Id>& inputSteps,
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vtkm::cont::ArrayHandle<ScalarType>& inputTime,
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const vtkm::Id& nSteps,
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DeviceAdapter tag)
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{
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vtkm::worklet::particleadvection::ParticleAdvectionWorklet<IntegratorType> worklet;
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vtkm::Id numSeeds = static_cast<vtkm::Id>(pts.GetNumberOfValues());
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vtkm::cont::ArrayHandle<vtkm::Id> status;
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//Allocate status arrays.
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vtkm::cont::ArrayHandleConstant<vtkm::Id> statusOK(static_cast<vtkm::Id>(1), numSeeds);
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status.Allocate(numSeeds);
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vtkm::cont::ArrayCopy(statusOK, status, tag);
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worklet.Run(it, pts, nSteps, status, inputSteps, inputTime, tag);
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//Create output.
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return ParticleAdvectionResult(pts, status, inputSteps, inputTime);
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}
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template <typename IntegratorType,
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typename FieldType,
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typename PointStorage,
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typename DeviceAdapter>
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ParticleAdvectionResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>, PointStorage>& pts,
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vtkm::cont::ArrayHandle<vtkm::Id>& inputSteps,
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vtkm::cont::ArrayHandle<ScalarType>& inputTime,
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const vtkm::Id& nSteps,
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DeviceAdapter tag)
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{
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vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>> ptsCopy;
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vtkm::cont::ArrayCopy(pts, ptsCopy, tag);
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return Run(it, ptsCopy, inputSteps, inputTime, nSteps, tag);
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}
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};
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struct StreamlineResult
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{
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using ScalarType = vtkm::worklet::particleadvection::ScalarType;
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using VectorType = vtkm::Vec<ScalarType, 3>;
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StreamlineResult()
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: positions()
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, polyLines()
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, status()
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, stepsTaken()
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, times()
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{
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}
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StreamlineResult(const vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>>& pos,
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const vtkm::cont::CellSetExplicit<>& lines,
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const vtkm::cont::ArrayHandle<vtkm::Id>& stat,
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const vtkm::cont::ArrayHandle<vtkm::Id>& steps)
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: positions(pos)
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, polyLines(lines)
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, status(stat)
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, stepsTaken(steps)
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{
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}
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StreamlineResult(const vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>>& pos,
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const vtkm::cont::CellSetExplicit<>& lines,
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const vtkm::cont::ArrayHandle<vtkm::Id>& stat,
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const vtkm::cont::ArrayHandle<vtkm::Id>& steps,
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const vtkm::cont::ArrayHandle<ScalarType>& timeArray)
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: positions(pos)
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, polyLines(lines)
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, status(stat)
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, stepsTaken(steps)
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, times(timeArray)
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{
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}
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vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>> positions;
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vtkm::cont::CellSetExplicit<> polyLines;
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vtkm::cont::ArrayHandle<vtkm::Id> status;
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vtkm::cont::ArrayHandle<vtkm::Id> stepsTaken;
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vtkm::cont::ArrayHandle<ScalarType> times;
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};
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class Streamline
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{
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public:
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using ScalarType = vtkm::worklet::particleadvection::ScalarType;
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Streamline() {}
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template <typename IntegratorType,
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typename FieldType,
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typename PointStorage,
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typename DeviceAdapter>
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StreamlineResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>, PointStorage>& seedArray,
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const vtkm::Id& nSteps,
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DeviceAdapter tag)
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{
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using DeviceAlgorithm = typename vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter>;
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vtkm::Id numSeeds = seedArray.GetNumberOfValues();
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//Allocate status and steps arrays.
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vtkm::cont::ArrayHandle<vtkm::Id> status, steps;
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vtkm::cont::ArrayHandleConstant<vtkm::Id> statusOK(static_cast<vtkm::Id>(1), numSeeds);
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status.Allocate(numSeeds);
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DeviceAlgorithm::Copy(statusOK, status);
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vtkm::cont::ArrayHandleConstant<vtkm::Id> zero(0, numSeeds);
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steps.Allocate(numSeeds);
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DeviceAlgorithm::Copy(zero, steps);
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//Allocate memory to store the time for temporal integration.
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vtkm::cont::ArrayHandle<ScalarType> timeArray;
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vtkm::cont::ArrayHandleConstant<ScalarType> time(0, numSeeds);
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timeArray.Allocate(numSeeds);
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DeviceAlgorithm::Copy(time, timeArray);
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return Run(it, seedArray, steps, timeArray, nSteps, tag);
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}
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template <typename IntegratorType,
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typename FieldType,
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typename PointStorage,
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typename DeviceAdapter>
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StreamlineResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>, PointStorage>& seedArray,
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vtkm::cont::ArrayHandle<vtkm::Id>& inputSteps,
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const vtkm::Id& nSteps,
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DeviceAdapter tag)
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{
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using DeviceAlgorithm = typename vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter>;
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vtkm::Id numSeeds = seedArray.GetNumberOfValues();
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//Allocate and initializr status array.
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vtkm::cont::ArrayHandle<vtkm::Id> status;
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vtkm::cont::ArrayHandleConstant<vtkm::Id> statusOK(static_cast<vtkm::Id>(1), numSeeds);
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status.Allocate(numSeeds);
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DeviceAlgorithm::Copy(statusOK, status);
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//Allocate memory to store the time for temporal integration.
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vtkm::cont::ArrayHandle<ScalarType> timeArray;
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vtkm::cont::ArrayHandleConstant<ScalarType> time(0, numSeeds);
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timeArray.Allocate(numSeeds);
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DeviceAlgorithm::Copy(time, timeArray);
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return Run(it, seedArray, inputSteps, timeArray, nSteps, tag);
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}
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template <typename IntegratorType, typename DeviceAdapter>
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StreamlineResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>>& seedArray,
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vtkm::cont::ArrayHandle<vtkm::Id>& inputSteps,
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vtkm::cont::ArrayHandle<ScalarType>& inputTime,
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const vtkm::Id& nSteps,
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DeviceAdapter tag)
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{
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using DeviceAlgorithm = typename vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter>;
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vtkm::worklet::particleadvection::StreamlineWorklet<IntegratorType> worklet;
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vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>> positions;
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vtkm::cont::CellSetExplicit<> polyLines;
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//Allocate and initialize status array.
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vtkm::Id numSeeds = seedArray.GetNumberOfValues();
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vtkm::cont::ArrayHandle<vtkm::Id> status;
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vtkm::cont::ArrayHandleConstant<vtkm::Id> statusOK(static_cast<vtkm::Id>(1), numSeeds);
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status.Allocate(numSeeds);
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DeviceAlgorithm::Copy(statusOK, status);
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worklet.Run(it, seedArray, nSteps, positions, polyLines, status, inputSteps, inputTime, tag);
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return StreamlineResult(positions, polyLines, status, inputSteps, inputTime);
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}
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template <typename IntegratorType,
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typename FieldType,
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typename PointStorage,
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typename DeviceAdapter>
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StreamlineResult Run(const IntegratorType& it,
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vtkm::cont::ArrayHandle<vtkm::Vec<FieldType, 3>, PointStorage>& seedArray,
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vtkm::cont::ArrayHandle<vtkm::Id>& inputSteps,
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vtkm::cont::ArrayHandle<ScalarType>& inputTime,
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const vtkm::Id& nSteps,
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DeviceAdapter tag)
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{
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vtkm::cont::ArrayHandle<vtkm::Vec<ScalarType, 3>> seedCopy;
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vtkm::cont::ArrayCopy(seedArray, seedCopy, tag);
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return Run(it, seedCopy, inputSteps, inputTime, nSteps, tag);
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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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