vtk-m/vtkm/worklet/cosmotools/EqualsMinimumPotential.h
2018-02-23 10:47:20 -05:00

109 lines
4.6 KiB
C++

//============================================================================
// Copyright (c) Kitware, Inc.
// All rights reserved.
// See LICENSE.txt for details.
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// PURPOSE. See the above copyright notice for more information.
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// Copyright 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
// Copyright 2014 UT-Battelle, LLC.
// Copyright 2014 Los Alamos National Security.
//
// Under the terms of Contract DE-NA0003525 with NTESS,
// the U.S. Government retains certain rights in this software.
//
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
// Laboratory (LANL), the U.S. Government retains certain rights in
// this software.
//============================================================================
// Copyright (c) 2016, Los Alamos National Security, LLC
// All rights reserved.
//
// Copyright 2016. Los Alamos National Security, LLC.
// This software was produced under U.S. Government contract DE-AC52-06NA25396
// for Los Alamos National Laboratory (LANL), which is operated by
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//============================================================================
#ifndef vtkm_worklet_cosmotools_equals_minimum_potential_h
#define vtkm_worklet_cosmotools_equals_minimum_potential_h
#include <vtkm/worklet/WorkletMapField.h>
namespace vtkm
{
namespace worklet
{
namespace cosmotools
{
// Worklet for computing the potential for a particle
template <typename T>
class EqualsMinimumPotential : public vtkm::worklet::WorkletMapField
{
public:
struct TagType : vtkm::ListTagBase<T>
{
};
typedef void ControlSignature(FieldIn<IdType> partId, // (input) particle Id
FieldIn<TagType> potential1, // (input) particle potential
FieldIn<TagType> potential2, // (input) minimum potential
FieldOut<IdType> minParticleIndx); // (output) particle Id of min
typedef _4 ExecutionSignature(_1, _2, _3);
using InputDomain = _1;
// Constructor
VTKM_EXEC_CONT
EqualsMinimumPotential() {}
VTKM_EXEC
vtkm::Id operator()(const vtkm::Id& partId, const T& potential1, const T& potential2) const
{
vtkm::Id minParticleIndx = 0;
if (fabs(potential1 - potential2) < 0.000000000001)
{
minParticleIndx = partId;
}
return minParticleIndx;
}
}; // EqualsMinimumPotential
}
}
}
#endif