49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2015 Artem Pavlenko
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*****************************************************************************/
|
|
|
|
// mapnik
|
|
#include <mapnik/util/math.hpp>
|
|
#include <mapnik/global.hpp>
|
|
|
|
// stl
|
|
#include <cmath>
|
|
|
|
namespace mapnik {
|
|
|
|
namespace util {
|
|
|
|
double normalize_angle(double angle)
|
|
{
|
|
while (angle >= M_PI)
|
|
{
|
|
angle -= 2.0 * M_PI;
|
|
}
|
|
while (angle < -M_PI)
|
|
{
|
|
angle += 2.0 * M_PI;
|
|
}
|
|
return angle;
|
|
}
|
|
|
|
} // end namespace util
|
|
|
|
} // end namespace mapnik
|