cartesian.hpp

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/*
 * Copyright (C) 2023  Christopher J. Howard
 *
 * This file is part of Antkeeper source code.
 *
 * Antkeeper source code 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.
 *
 * Antkeeper source code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef ANTKEEPER_GEOM_CARTESIAN_HPP
#define ANTKEEPER_GEOM_CARTESIAN_HPP
 
#include <engine/math/vector.hpp>
#include <cmath>
 
namespace geom {
 
namespace cartesian {
 
template <class T>
math::vec3<T> to_spherical(const math::vec3<T>& v);
 
template <class T>
math::vec3<T> to_spherical(const math::vec3<T>& v)
{
    const T xx_yy = v.x() * v.x() + v.y() * v.y();
    
    return math::vec3<T>
    {
        std::sqrt(xx_yy + v.z() * v.z()),
        std::atan2(v.z(), std::sqrt(xx_yy)),
        std::atan2(v.y(), v.x())
    };
}
 
} // namespace cartesian
} // namespace geom
 
#endif // ANTKEEPER_GEOM_CARTESIAN_HPP