mirror of
https://gitlab.kitware.com/vtk/vtk-m
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170 lines
6.9 KiB
C++
170 lines
6.9 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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// Copyright (c) 2016, Los Alamos National Security, LLC
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// All rights reserved.
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//
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// Copyright 2016. Los Alamos National Security, LLC.
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// This software was produced under U.S. Government contract DE-AC52-06NA25396
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// for Los Alamos National Laboratory (LANL), which is operated by
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// Los Alamos National Security, LLC for the U.S. Department of Energy.
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// The U.S. Government has rights to use, reproduce, and distribute this
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// software. NEITHER THE GOVERNMENT NOR LOS ALAMOS NATIONAL SECURITY, LLC
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// MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE
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// USE OF THIS SOFTWARE. If software is modified to produce derivative works,
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// such modified software should be clearly marked, so as not to confuse it
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// with the version available from LANL.
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//
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// Additionally, redistribution and use in source and binary forms, with or
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// without modification, are permitted provided that the following conditions
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// are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// 3. Neither the name of Los Alamos National Security, LLC, Los Alamos
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// National Laboratory, LANL, the U.S. Government, nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY LOS ALAMOS NATIONAL SECURITY, LLC AND
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// CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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// BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LOS ALAMOS
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// NATIONAL SECURITY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//============================================================================
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#ifndef vtkm_worklet_cosmotools_graft_particle_h
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#define vtkm_worklet_cosmotools_graft_particle_h
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/cosmotools/TagTypes.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 cosmotools
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{
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// Worklet to graft particles together to form halos
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template <typename T>
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class GraftParticles : public vtkm::worklet::WorkletMapField
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{
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public:
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using ControlSignature = void(
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FieldIn<IdType> index, // (input) index into particles
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FieldIn<IdType> partId, // (input) particle id sorted by bin
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FieldIn<IdType> binId, // (input) bin id sorted by bin
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FieldIn<UInt32TagType> activeFlag, // (input) flag indicates which of neighbor ranges are used
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WholeArrayIn<IdType> partIdArray, // (input) particle id sorted by bin entire array
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WholeArrayIn<Vec3TagType<T>> location, // (input) location of particles
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WholeArrayIn<IdType> firstParticleId, // (input) first particle index vector
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WholeArrayIn<IdType> lastParticleId, // (input) last particle index vector
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WholeArrayOut<IdType> haloId);
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using ExecutionSignature = void(_1, _2, _3, _4, _5, _6, _7, _8, _9);
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using InputDomain = _1;
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vtkm::Id xNum, yNum, zNum;
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vtkm::Id NUM_NEIGHBORS;
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T linkLenSq;
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// Constructor
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VTKM_EXEC_CONT
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GraftParticles(const vtkm::Id XNum,
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const vtkm::Id YNum,
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const vtkm::Id ZNum,
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const vtkm::Id NumNeighbors,
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const T LinkLen)
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: xNum(XNum)
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, yNum(YNum)
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, zNum(ZNum)
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, NUM_NEIGHBORS(NumNeighbors)
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, linkLenSq(LinkLen * LinkLen)
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{
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}
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template <typename InIdPortalType,
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typename InFieldPortalType,
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typename InVectorPortalType,
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typename OutPortalType>
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VTKM_EXEC void operator()(const vtkm::Id& i,
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const vtkm::Id& iPartId,
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const vtkm::Id& iBinId,
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const vtkm::UInt32& activeFlag,
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const InIdPortalType& partIdArray,
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const InFieldPortalType& location,
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const InVectorPortalType& firstParticleId,
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const InVectorPortalType& lastParticleId,
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OutPortalType& haloId) const
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{
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const vtkm::Id yVal = (iBinId / xNum) % yNum;
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const vtkm::Id zVal = iBinId / (xNum * yNum);
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vtkm::UInt32 flag = activeFlag;
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vtkm::Id cnt = 0;
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// Iterate on both sides of the bin this particle is in
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for (vtkm::Id z = zVal - 1; z <= zVal + 1; z++)
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{
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for (vtkm::Id y = yVal - 1; y <= yVal + 1; y++)
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{
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if (flag & 0x1)
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{
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vtkm::Id firstBinId = NUM_NEIGHBORS * i + cnt;
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vtkm::Id startParticle = firstParticleId.Get(firstBinId);
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vtkm::Id endParticle = lastParticleId.Get(firstBinId);
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for (vtkm::Id j = startParticle; j < endParticle; j++)
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{
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vtkm::Id jPartId = partIdArray.Get(j);
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vtkm::Vec<T, 3> iloc = location.Get(iPartId);
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vtkm::Vec<T, 3> jloc = location.Get(jPartId);
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T xDist = iloc[0] - jloc[0];
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T yDist = iloc[1] - jloc[1];
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T zDist = iloc[2] - jloc[2];
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if ((xDist * xDist + yDist * yDist + zDist * zDist) <= linkLenSq)
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{
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if ((haloId.Get(iPartId) == haloId.Get(haloId.Get(iPartId))) &&
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(haloId.Get(jPartId) < haloId.Get(iPartId)))
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{
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haloId.Set(haloId.Get(iPartId), haloId.Get(jPartId));
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}
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}
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}
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}
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flag = flag >> 1;
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cnt++;
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}
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}
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}
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}; // GraftParticles
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}
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}
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}
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#endif
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