/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2021                                                               *
 *                                                                                       *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
 * software and associated documentation files (the "Software"), to deal in the Software *
 * without restriction, including without limitation the rights to use, copy, modify,    *
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
 * permit persons to whom the Software is furnished to do so, subject to the following   *
 * conditions:                                                                           *
 *                                                                                       *
 * The above copyright notice and this permission notice shall be included in all copies *
 * or substantial portions of the Software.                                              *
 *                                                                                       *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
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 ****************************************************************************************/

#ifndef __OPENSPACE_CORE___COORDINATECONVERSION___H__
#define __OPENSPACE_CORE___COORDINATECONVERSION___H__

#include <ghoul/glm.h>

namespace openspace {

/**
 * Converts from ICRS coordinates to galactic cartesian coordinates.
 * \param ra Right ascension, given in decimal degrees
 * \param dec Declination, given in decimal degrees
 * \param distance The distance, or radius, to the position given in any unit.
 * \return A position in galactic cartesian coordinates, given in the same unit as the
 *         distance parameter.
 */
glm::dvec3 icrsToGalacticCartesian(float ra, float dec, double distance);

} // namespace openspace

#endif // __OPENSPACE_CORE___COORDINATECONVERSION___H__