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Removing superflous file

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DennisOSRM 2012-12-23 20:03:12 +01:00
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commit 8e023418e4
1 changed files with 0 additions and 55 deletions
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Util/ProjectionUtils.h
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/*
open source routing machine
Copyright (C) Dennis Luxen, others 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU AFFERO General Public License as published by
the Free Software Foundation; either version 3 of the License, or
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 Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
or see http://www.gnu.org/licenses/agpl.txt.
*/
#ifndef PROJECTIONUTILS_H_
#define PROJECTIONUTILS_H_
#include <cmath>
namespace ProjectionUtils {
inline long googleMaxTiles(int zoom) { return( 1L << (17 - zoom) ); }
inline void googleX_to_lng(int zoom, double x, double& lng) {
long tilesAtThisZoom =googleMaxTiles(zoom);
lng = -180.0 + (x * 360.0 / double(tilesAtThisZoom));
}
inline void googleY_to_lat(int zoom, double y, double& lat) {
// This function is the inverse Mercator projection.
// Look up 'Mercator projection' on Wikipedia for details.
long pixels = googleMaxTiles(zoom) * 256L;
double pixelsPerLonRadian = pixels / (2.0 * M_PI);
double bitmapOrigo = pixels / 2;
double Y = (bitmapOrigo - y*256) / pixelsPerLonRadian;
double latRad = 2.0 * ::atan( ::exp(Y) ) - M_PI_2;
lat = latRad * 180.0 / M_PI;
}
inline void googleXY_to_latlng( double x, double y, int zoom, double& lng, double& lat ) {
googleX_to_lng(zoom,x,lng);
googleY_to_lat(zoom,y,lat);
}
}
#endif /* PROJECTIONUTILS_H_ */