orientation.h

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/*
 * LSST Data Management System
 * Copyright 2014-2015 AURA/LSST.
 *
 * This product includes software developed by the
 * LSST Project (http://www.lsst.org/).
 *
 * 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 LSST License Statement and
 * the GNU General Public License along with this program.  If not,
 * see <https://www.lsstcorp.org/LegalNotices/>.
 */

#ifndef LSST_SPHGEOM_ORIENTATION_H_
#define LSST_SPHGEOM_ORIENTATION_H_


#include "UnitVector3d.h"


namespace lsst {
namespace sphgeom {

int orientationExact(Vector3d const & a,
                     Vector3d const & b,
                     Vector3d const & c);

int orientation(UnitVector3d const & a,
                UnitVector3d const & b,
                UnitVector3d const & c);

int orientationX(UnitVector3d const & b, UnitVector3d const & c);

int orientationY(UnitVector3d const & b, UnitVector3d const & c);

int orientationZ(UnitVector3d const & b, UnitVector3d const & c);

}} // namespace lsst::sphgeom

#endif // LSST_SPHGEOM_ORIENTATION_H_