VelocityProperties.H

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/* Copyright 2021 Hannah Klion
 *
 * This file is part of WarpX.
 *
 * License: BSD-3-Clause-LBNL
 */

#ifndef VELOCITY_PROPERTIES_H_
#define VELOCITY_PROPERTIES_H_

#include <AMReX_ParmParse.H>
#include <AMReX_Parser.H>
#include <AMReX_REAL.H>

/* Type of velocity initialization. Used by VelocityProperties and GetVelocity. */
enum VelocityInitType {VelConstantValue, VelParserFunction};

struct VelocityProperties
{
    VelocityProperties (amrex::ParmParse& pp);

    /* Type of velocity initialization */
    VelocityInitType m_type;

    /* Velocity direction */
    int m_dir; // Index x=0, y=1, z=2
    int m_sign_dir; // Sign of the velocity direction positive=1, negative=-1

    /* Constant velocity value, if m_type == VelConstantValue */
    amrex::Real m_velocity;
    /* Storage of the parser function, if m_type == VelParserFunction */
    std::unique_ptr<amrex::Parser> m_ptr_velocity_parser;
};

#endif