LonLat.h

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/*
 * This file is part of sphgeom.
 *
 * Developed for the LSST Data Management System.
 * This product includes software developed by the LSST Project
 * (http://www.lsst.org).
 * See the COPYRIGHT file at the top-level directory of this distribution
 * for details of code ownership.
 *
 * This software is dual licensed under the GNU General Public License and also
 * under a 3-clause BSD license. Recipients may choose which of these licenses
 * to use; please see the files gpl-3.0.txt and/or bsd_license.txt,
 * respectively.  If you choose the GPL option then the following text applies
 * (but note that there is still no warranty even if you opt for BSD instead):
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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/>.
 */
 
#ifndef LSST_SPHGEOM_LONLAT_H_
#define LSST_SPHGEOM_LONLAT_H_
 
 
#include <iosfwd>
#include <stdexcept>
 
#include "NormalizedAngle.h"
 
 
namespace lsst{
namespace sphgeom {
 
class Vector3d;
 
class LonLat {
public:
    static LonLat fromDegrees(double lon, double lat) {
        return LonLat(NormalizedAngle::fromDegrees(lon),
                      Angle::fromDegrees(lat));
    }
 
    static LonLat fromRadians(double lon, double lat) {
        return LonLat(NormalizedAngle::fromRadians(lon),
                      Angle::fromRadians(lat));
    }
 
    static Angle latitudeOf(Vector3d const & v);
 
    static NormalizedAngle longitudeOf(Vector3d const & v);
 
    LonLat() {}
 
    LonLat(NormalizedAngle lon, Angle lat);
 
    LonLat(Vector3d const & v);
 
    bool operator==(LonLat const & p) const {
        return _lon == p._lon && _lat == p._lat;
    }
 
    bool operator!=(LonLat const & p) const {
        return _lon != p._lon || _lat != p._lat;
    }
 
    NormalizedAngle getLon() const { return _lon; }
 
    Angle getLat() const { return _lat; }
 
private:
    void _enforceInvariants();
 
    NormalizedAngle _lon;
    Angle _lat;
};
 
std::ostream & operator<<(std::ostream &, LonLat const &);
 
}} // namespace lsst::sphgeom
 
#endif // LSST_SPHGEOM_LONLAT_H_