Method BuildBufferMasksInBox

Source/WarpX.cpp:3511–3532

* \brief Build buffer mask within given FArrayBox * * \param tbx Current FArrayBox * \param buffer_mask Buffer mask to be set * \param guard_mask Guard mask used to set buffer_mask * \param ng Number of guard cells */

 * \param ng          Number of guard cells
 */
void
WarpX::BuildBufferMasksInBox ( const amrex::Box tbx, amrex::IArrayBox &buffer_mask,
                               const amrex::IArrayBox &guard_mask, const int ng )
{
    auto const& msk = buffer_mask.array();
    auto const& gmsk = guard_mask.const_array();
    const amrex::Dim3 ng3 = amrex::IntVect(ng).dim3();
    amrex::ParallelFor(tbx, [=] AMREX_GPU_DEVICE (int i, int j, int k)
    {
        for         (int kk = k-ng3.z; kk <= k+ng3.z; ++kk) {
            for     (int jj = j-ng3.y; jj <= j+ng3.y; ++jj) {
                for (int ii = i-ng3.x; ii <= i+ng3.x; ++ii) {
                    if ( gmsk(ii,jj,kk) == 0 ) {
                        msk(i,j,k) = 0;
                        return;
                    }
                }
            }
        }
        msk(i,j,k) = 1;
    });
}

const iMultiFab*
WarpX::CurrentBufferMasks (int lev)