cs_converter.cpp

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/*
 * Copyright (c) 2020-2023 RaccoonLab.
 *
 * This program 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, version 3.
 *
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * Author: Dmitry Ponomarev <ponomarevda96@gmail.com>
 */
 
 
#include "cs_converter.hpp"
#include <Eigen/Geometry>
 
namespace Converter
{
 
const auto Q_ENU_TO_NED = Eigen::Quaterniond(0, 0.70711, 0.70711, 0);
 
const auto Q_FRD_FLU = Eigen::Quaterniond(0, 1, 0, 0);
 
 
 
Eigen::Vector3d nedToEnu(Eigen::Vector3d ned){
    return Q_ENU_TO_NED.inverse() * ned;
}
Eigen::Vector3d enuToNed(Eigen::Vector3d enu){
    return Q_ENU_TO_NED * enu;
}
 
Eigen::Vector3d frdToFlu(Eigen::Vector3d frd){
    return Q_FRD_FLU * frd;
}
Eigen::Vector3d fluToFrd(Eigen::Vector3d flu){
    return Q_FRD_FLU * flu;
}
 
 
Eigen::Quaterniond frdNedTofluEnu(const Eigen::Quaterniond& q_frd_to_ned){
    return Q_ENU_TO_NED * q_frd_to_ned * Q_FRD_FLU;
}
 
Eigen::Quaterniond fluEnuToFrdNed(const Eigen::Quaterniond& q_flu_to_enu){
    return Q_ENU_TO_NED.inverse() * q_flu_to_enu * Q_FRD_FLU;
}
 
}  // namespace Converter