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usng.h
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#ifndef USNG_H
#define USNG_H
/***************************************************************************/
/* RSC IDENTIFIER: USNG
*
* ABSTRACT
*
* This component converts between geodetic coordinates (latitude and
* longitude) and United States National Grid (USNG) coordinates.
*
* ERROR HANDLING
*
* This component checks parameters for valid values. If an invalid value
* is found, the error code is combined with the current error code using
* the bitwise or. This combining allows multiple error codes to be
* returned. The possible error codes are:
*
* USNG_NO_ERROR : No errors occurred in function
* USNG_LAT_ERROR : Latitude outside of valid range
* (-90 to 90 degrees)
* USNG_LON_ERROR : Longitude outside of valid range
* (-180 to 360 degrees)
* USNG_STR_ERROR : An USNG string error: string too long,
* too short, or badly formed
* USNG_PRECISION_ERROR : The precision must be between 0 and 5
* inclusive.
* USNG_A_ERROR : Semi-major axis less than or equal to zero
* USNG_INV_F_ERROR : Inverse flattening outside of valid range
* (250 to 350)
* USNG_EASTING_ERROR : Easting outside of valid range
* (100,000 to 900,000 meters for UTM)
* (0 to 4,000,000 meters for UPS)
* USNG_NORTHING_ERROR : Northing outside of valid range
* (0 to 10,000,000 meters for UTM)
* (0 to 4,000,000 meters for UPS)
* USNG_ZONE_ERROR : Zone outside of valid range (1 to 60)
* USNG_HEMISPHERE_ERROR : Invalid hemisphere ('N' or 'S')
*
* REUSE NOTES
*
* USNG is intended for reuse by any application that does conversions
* between geodetic coordinates and USNG coordinates.
*
* REFERENCES
*
* Further information on USNG can be found in the Reuse Manual.
*
* USNG originated from : Federal Geographic Data Committee
* 590 National Center
* 12201 Sunrise Valley Drive
* Reston, VA 22092
*
* LICENSES
*
* None apply to this component.
*
* RESTRICTIONS
*
*
* ENVIRONMENT
*
* USNG was tested and certified in the following environments:
*
* 1. Solaris 2.5 with GCC version 2.8.1
* 2. Windows 95 with MS Visual C++ version 6
*
* MODIFICATIONS
*
* Date Description
* ---- -----------
* 06-05-06 Original Code (cloned from MGRS)
*
*/
/***************************************************************************/
/*
* DEFINES
*/
#define USNG_NO_ERROR 0x0000
#define USNG_LAT_ERROR 0x0001
#define USNG_LON_ERROR 0x0002
#define USNG_STRING_ERROR 0x0004
#define USNG_PRECISION_ERROR 0x0008
#define USNG_A_ERROR 0x0010
#define USNG_INV_F_ERROR 0x0020
#define USNG_EASTING_ERROR 0x0040
#define USNG_NORTHING_ERROR 0x0080
#define USNG_ZONE_ERROR 0x0100
#define USNG_HEMISPHERE_ERROR 0x0200
#define USNG_LAT_WARNING 0x0400
/***************************************************************************/
/*
* FUNCTION PROTOTYPES
*/
/* ensure proper linkage to c++ programs */
#ifdef __cplusplus
extern "C" {
#endif
long Set_USNG_Parameters(double a,
double f,
char *Ellipsoid_Code);
/*
* The function Set_USNG_Parameters receives the ellipsoid parameters and sets
* the corresponding state variables. If any errors occur, the error code(s)
* are returned by the function, otherwise USNG_NO_ERROR is returned.
*
* a : Semi-major axis of ellipsoid in meters (input)
* f : Flattening of ellipsoid (input)
* Ellipsoid_Code : 2-letter code for ellipsoid (input)
*/
void Get_USNG_Parameters(double *a,
double *f,
char *Ellipsoid_Code);
/*
* The function Get_USNG_Parameters returns the current ellipsoid
* parameters.
*
* a : Semi-major axis of ellipsoid, in meters (output)
* f : Flattening of ellipsoid (output)
* Ellipsoid_Code : 2-letter code for ellipsoid (output)
*/
long Convert_Geodetic_To_USNG (double Latitude,
double Longitude,
long Precision,
char *USNG);
/*
* The function Convert_Geodetic_To_USNG converts geodetic (latitude and
* longitude) coordinates to a USNG coordinate string, according to the
* current ellipsoid parameters. If any errors occur, the error code(s)
* are returned by the function, otherwise USNG_NO_ERROR is returned.
*
* Latitude : Latitude in radians (input)
* Longitude : Longitude in radians (input)
* Precision : Precision level of USNG string (input)
* USNG : USNG coordinate string (output)
*
*/
long Convert_USNG_To_Geodetic (char *USNG,
double *Latitude,
double *Longitude);
/*
* This function converts a USNG coordinate string to Geodetic (latitude
* and longitude in radians) coordinates. If any errors occur, the error
* code(s) are returned by the function, otherwise USNG_NO_ERROR is returned.
*
* USNG : USNG coordinate string (input)
* Latitude : Latitude in radians (output)
* Longitude : Longitude in radians (output)
*
*/
long Convert_UTM_To_USNG (long Zone,
char Hemisphere,
double Easting,
double Northing,
long Precision,
char *USNG);
/*
* The function Convert_UTM_To_USNG converts UTM (zone, easting, and
* northing) coordinates to a USNG coordinate string, according to the
* current ellipsoid parameters. If any errors occur, the error code(s)
* are returned by the function, otherwise USNG_NO_ERROR is returned.
*
* Zone : UTM zone (input)
* Hemisphere : North or South hemisphere (input)
* Easting : Easting (X) in meters (input)
* Northing : Northing (Y) in meters (input)
* Precision : Precision level of USNG string (input)
* USNG : USNG coordinate string (output)
*/
long Convert_USNG_To_UTM (char *USNG,
long *Zone,
char *Hemisphere,
double *Easting,
double *Northing);
/*
* The function Convert_USNG_To_UTM converts a USNG coordinate string
* to UTM projection (zone, hemisphere, easting and northing) coordinates
* according to the current ellipsoid parameters. If any errors occur,
* the error code(s) are returned by the function, otherwise UTM_NO_ERROR
* is returned.
*
* USNG : USNG coordinate string (input)
* Zone : UTM zone (output)
* Hemisphere : North or South hemisphere (output)
* Easting : Easting (X) in meters (output)
* Northing : Northing (Y) in meters (output)
*/
long Convert_UPS_To_USNG ( char Hemisphere,
double Easting,
double Northing,
long Precision,
char *USNG);
/*
* The function Convert_UPS_To_USNG converts UPS (hemisphere, easting,
* and northing) coordinates to a USNG coordinate string according to
* the current ellipsoid parameters. If any errors occur, the error
* code(s) are returned by the function, otherwise UPS_NO_ERROR is
* returned.
*
* Hemisphere : Hemisphere either 'N' or 'S' (input)
* Easting : Easting/X in meters (input)
* Northing : Northing/Y in meters (input)
* Precision : Precision level of USNG string (input)
* USNG : USNG coordinate string (output)
*/
long Convert_USNG_To_UPS ( char *USNG,
char *Hemisphere,
double *Easting,
double *Northing);
/*
* The function Convert_USNG_To_UPS converts a USNG coordinate string
* to UPS (hemisphere, easting, and northing) coordinates, according
* to the current ellipsoid parameters. If any errors occur, the error
* code(s) are returned by the function, otherwide UPS_NO_ERROR is returned.
*
* USNG : USNG coordinate string (input)
* Hemisphere : Hemisphere either 'N' or 'S' (output)
* Easting : Easting/X in meters (output)
* Northing : Northing/Y in meters (output)
*/
#ifdef __cplusplus
}
#endif
#endif /* USNG_H */