base.hpp

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// OpenBEM - Copyright (C) 2026 Shashwat Sharma
 
// This file is part of OpenBEM.
 
// OpenBEM is free software: you can redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software Foundation, either version 3
// of the License, or (at your option) any later version.
 
// You should have received a copy of the GNU General Public License along with OpenBEM.
// If not, see <https://www.gnu.org/licenses/>.
 
 
#ifndef BEM_RWG_OPINT_OBS_BASE_H
#define BEM_RWG_OPINT_OBS_BASE_H
 
#include "types.hpp"
#include "geometry/primitives/triangle.hpp"
 
 
namespace bem::rwg
{
 
struct ObsResult
{
    Complex g = 0;
    EigRowVecN<Complex, 12> rs_g = EigRowVecN<Complex, 12>::Zero();
    EigRowVecN<Complex, 9> grad_g = EigRowVecN<Complex, 9>::Zero();
    EigRowVecN<Complex, 15> rot_grad_g = EigRowVecN<Complex, 15>::Zero();
};
 
 
class ObsIntegratorBase
{
public:
 
    virtual ObsResult integrate(
        const Complex k,
        const Triangle<3>& obs_tri,
        const Triangle<2>& src_tri
        ) = 0;
 
 
    virtual void set_compute_terms(
        bool compute_g_term,
        bool compute_rs_g_terms,
        bool compute_grad_g_terms,
        bool compute_rot_grad_g_terms
        )
    {
        compute_g_term_ = compute_g_term;
        compute_rs_g_terms_ = compute_rs_g_terms;
        compute_grad_g_terms_ = compute_grad_g_terms;
        compute_rot_grad_g_terms_ = compute_rot_grad_g_terms;
        return;
    };
 
 
protected:
 
    bool compute_g_term_ = true;
    bool compute_rs_g_terms_ = true;
    bool compute_grad_g_terms_ = true;
    bool compute_rot_grad_g_terms_ = true;
 
};
 
}
 
#endif