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/* Copyright 2019-2020 Neil Zaim, Yinjian Zhao
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#ifndef WARPX_PARTICLE_UTILS_H_
#define WARPX_PARTICLE_UTILS_H_
#include "Particles/WarpXParticleContainer.H"
#include <AMReX_DenseBins.H>
namespace ParticleUtils {
/**
* \brief Find the particles and count the particles that are in each cell. More specifically
* this function returns an amrex::DenseBins object containing an offset array and a permutation
* array which can be used to loop over all the cells in a tile and apply an algorithm to
* particles of a given species present in each cell.
* Note that this does *not* rearrange particle arrays.
*
* @param[in] lev the index of the refinement level.
* @param[in] mfi the MultiFAB iterator.
* @param[in] ptile the particle tile.
*/
amrex::DenseBins<WarpXParticleContainer::ParticleType>
findParticlesInEachCell( int const lev, amrex::MFIter const& mfi,
WarpXParticleContainer::ParticleTileType const& ptile);
}
#endif // WARPX_PARTICLE_UTILS_H_
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