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#ifndef PLASMA_INJECTOR_H_
#define PLASMA_INJECTOR_H_
#include <InjectorPosition.H>
#include <InjectorDensity.H>
#include <InjectorMomentum.H>
#include <array>
#include <AMReX_Vector.H>
#include <WarpXConst.H>
#include <WarpXParser.H>
#include <AMReX_ParmParse.H>
#include <AMReX_Utility.H>
///
/// The PlasmaInjector class parses and stores information about the plasma
/// type used in the particle container. This information is used to create the
/// particles on initialization and whenever the window moves.
///
class PlasmaInjector
{
public:
PlasmaInjector ();
PlasmaInjector (int ispecies, const std::string& name);
bool insideBounds (amrex::Real x, amrex::Real y, amrex::Real z) const noexcept;
int num_particles_per_cell;
amrex::Vector<int> num_particles_per_cell_each_dim;
// gamma * beta
amrex::XDim3 getMomentum (amrex::Real x, amrex::Real y, amrex::Real z) const noexcept;
amrex::Real getCharge () {return charge;}
amrex::Real getMass () {return mass;}
bool doInjection () const noexcept { return inj_pos != NULL;}
bool add_single_particle = false;
amrex::Vector<amrex::Real> single_particle_pos;
amrex::Vector<amrex::Real> single_particle_vel;
amrex::Real single_particle_weight;
bool gaussian_beam = false;
amrex::Real x_m;
amrex::Real y_m;
amrex::Real z_m;
amrex::Real x_rms;
amrex::Real y_rms;
amrex::Real z_rms;
amrex::Real q_tot;
long npart;
int do_symmetrize = 0;
bool radially_weighted = true;
std::string str_density_function;
std::string str_momentum_function_ux;
std::string str_momentum_function_uy;
std::string str_momentum_function_uz;
amrex::Real xmin, xmax;
amrex::Real ymin, ymax;
amrex::Real zmin, zmax;
InjectorPosition* getInjectorPosition ();
InjectorDensity* getInjectorDensity ();
InjectorMomentum* getInjectorMomentum ();
// When running on GPU, injector for position, momentum and density store
// particle 3D positions in shared memory IF using the parser.
std::size_t
sharedMemoryNeeded () const noexcept {
return amrex::max(inj_pos->sharedMemoryNeeded(),
inj_rho->sharedMemoryNeeded(),
inj_mom->sharedMemoryNeeded());
}
protected:
amrex::Real mass, charge;
amrex::Real density;
int species_id;
std::string species_name;
std::unique_ptr<InjectorPosition> inj_pos;
std::unique_ptr<InjectorDensity > inj_rho;
std::unique_ptr<InjectorMomentum> inj_mom;
void parseDensity (amrex::ParmParse& pp);
void parseMomentum (amrex::ParmParse& pp);
};
#endif
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