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#ifndef WARPX_FINITE_DIFFERENCE_SOLVER_H_
#define WARPX_FINITE_DIFFERENCE_SOLVER_H_
#include "WarpXAlgorithmSelection.H"
#ifdef WARPX_DIM_RZ
#include "FiniteDifferenceAlgorithms/CylindricalYeeAlgorithm.H"
#else
#include "FiniteDifferenceAlgorithms/YeeAlgorithm.H"
#include "FiniteDifferenceAlgorithms/CKCAlgorithm.H"
#endif
#include <AMReX_MultiFab.H>
/**
* \brief Top-level class for the electromagnetic finite-difference solver
*
* TODO
*/
class FiniteDifferenceSolver
{
public:
using VectorField = std::array< std::unique_ptr<amrex::MultiFab>, 3 >;
// Constructor
FiniteDifferenceSolver ( int const fdtd_algo,
std::array<amrex::Real,3> cell_size );
void EvolveB ( VectorField& Bfield,
VectorField const& Efield,
amrex::Real const dt );
private:
int m_fdtd_algo;
#ifdef WARPX_DIM_RZ
amrex::Real m_dr, m_rmin;
amrex::Real m_nmodes;
amrex::Gpu::ManagedVector<amrex::Real> stencil_coefs_r;
amrex::Gpu::ManagedVector<amrex::Real> stencil_coefs_z;
#else
amrex::Gpu::ManagedVector<amrex::Real> stencil_coefs_x;
amrex::Gpu::ManagedVector<amrex::Real> stencil_coefs_y;
amrex::Gpu::ManagedVector<amrex::Real> stencil_coefs_z;
#endif
#ifdef WARPX_DIM_RZ
template< typename T_Algo >
void EvolveBCylindrical ( VectorField& Bfield,
VectorField const& Efield,
amrex::Real const dt );
#else
template< typename T_Algo >
void EvolveBCartesian ( VectorField& Bfield,
VectorField const& Efield,
amrex::Real const dt );
#endif
};
#endif // WARPX_FINITE_DIFFERENCE_SOLVER_H_
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