/**
 *  \file angle.h
 *  \brief Various trigoniometric helper functions
 *
 *  Authors:
 *   Johan Engelen <goejendaagh@zonnet.nl>
 *
 * Copyright (C) 2007 authors
 *
 * This library is free software; you can redistribute it and/or
 * modify it either under the terms of the GNU Lesser General Public
 * License version 2.1 as published by the Free Software Foundation
 * (the "LGPL") or, at your option, under the terms of the Mozilla
 * Public License Version 1.1 (the "MPL"). If you do not alter this
 * notice, a recipient may use your version of this file under either
 * the MPL or the LGPL.
 *
 * You should have received a copy of the LGPL along with this library
 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * You should have received a copy of the MPL along with this library
 * in the file COPYING-MPL-1.1
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
 * the specific language governing rights and limitations.
 *
 */
 
#ifndef LIB2GEOM_SEEN_ANGLE_H
#define LIB2GEOM_SEEN_ANGLE_H

namespace Geom {

#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
#ifndef M_PI_2
# define M_PI_2 ( M_PI / 2)
#endif

inline double deg_to_rad(double deg) { return deg*M_PI/180.0;}

inline double rad_to_deg(double rad) { return rad*180.0/M_PI;}

}

#endif
