ossimGoogleProjection.cpp File Reference

#include <ossim/projection/ossimGoogleProjection.h>

Go to the source code of this file.

Macros
#define	deg2rad(d)   (((d)*M_PI)/180)
#define	rad2deg(d)   (((d)*180)/M_PI)
#define	earth_radius   6378137

Functions
double	y2lat_d (double y)
double	x2lon_d (double x)
double	lat2y_d (double lat)
double	lon2x_d (double lon)
double	y2lat_m (double y)
double	x2lon_m (double x)
double	lat2y_m (double lat)
double	lon2x_m (double lon)

Macro Definition Documentation

deg2rad

#define deg2rad

(

d

)

(((d)*M_PI)/180)

Definition at line 17 of file ossimGoogleProjection.cpp.

Referenced by lat2y_d(), lat2y_m(), lon2x_m(), and y2lat_d().

earth_radius

#define earth_radius   6378137

Definition at line 19 of file ossimGoogleProjection.cpp.

Referenced by lat2y_m(), lon2x_m(), x2lon_m(), and y2lat_m().

rad2deg

#define rad2deg

(

d

)

(((d)*180)/M_PI)

Definition at line 18 of file ossimGoogleProjection.cpp.

Referenced by lat2y_d(), x2lon_m(), y2lat_d(), and y2lat_m().

Function Documentation

lat2y_d()

double lat2y_d

(

double

lat

)

Definition at line 25 of file ossimGoogleProjection.cpp.

References deg2rad, M_PI, and rad2deg.

{ return rad2deg(log(tan(M_PI/4+ deg2rad(lat)/2))); }

lat2y_m()

double lat2y_m

(

double

lat

)

Definition at line 32 of file ossimGoogleProjection.cpp.

References deg2rad, earth_radius, and M_PI.

Referenced by ossimGoogleProjection::forward().

{ return earth_radius * log(tan(M_PI/4+ deg2rad(lat)/2)); }

lon2x_d()

double lon2x_d

(

double

lon

)

Definition at line 26 of file ossimGoogleProjection.cpp.

{ return lon; }

lon2x_m()

double lon2x_m

(

double

lon

)

Definition at line 33 of file ossimGoogleProjection.cpp.

References deg2rad, and earth_radius.

Referenced by ossimGoogleProjection::forward().

{ return deg2rad(lon) * earth_radius; }

x2lon_d()

double x2lon_d

(

double

x

)

Definition at line 24 of file ossimGoogleProjection.cpp.

References x.

{ return x; }

x2lon_m()

double x2lon_m

(

double

x

)

Definition at line 31 of file ossimGoogleProjection.cpp.

References earth_radius, rad2deg, and x.

Referenced by ossimGoogleProjection::inverse().

{ return rad2deg(x / earth_radius); }

y2lat_d()

double y2lat_d

(

double

y

)

Definition at line 23 of file ossimGoogleProjection.cpp.

References deg2rad, M_PI, rad2deg, and y.

{ return rad2deg(2 * atan(exp(  deg2rad(y) ) ) - M_PI/2); }

y2lat_m()

double y2lat_m

(

double

y

)

Definition at line 30 of file ossimGoogleProjection.cpp.

References earth_radius, M_PI, rad2deg, and y.

Referenced by ossimGoogleProjection::inverse().

{ return rad2deg(2 * atan(exp( (y / earth_radius ) )) - M_PI/2); }