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/***************************************************************************/
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/* RSC IDENTIFIER: LAMBERT_2
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* This component provides conversions between Geodetic coordinates
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* (latitude and longitude in radians) and Lambert Conformal Conic
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* (2 parallel) projection coordinates (easting and northing in meters) defined
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* by two standard parallels. When both standard parallel parameters
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* are set to the same latitude value, the result is a Lambert
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* Conformal Conic projection with one standard parallel at the
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* This component checks parameters for valid values. If an invalid value
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* is found the error code is combined with the current error code using
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* the bitwise or. This combining allows multiple error codes to be
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* returned. The possible error codes are:
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* LAMBERT_2_NO_ERROR : No errors occurred in function
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* LAMBERT_2_LAT_ERROR : Latitude outside of valid range
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* LAMBERT_2_LON_ERROR : Longitude outside of valid range
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* (-180 to 360 degrees)
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* LAMBERT_2_EASTING_ERROR : Easting outside of valid range
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* (depends on ellipsoid and projection
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* LAMBERT_2_NORTHING_ERROR : Northing outside of valid range
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* (depends on ellipsoid and projection
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* LAMBERT_2_FIRST_STDP_ERROR : First standard parallel outside of valid
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* range (-89 59 59.0 to 89 59 59.0 degrees)
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* LAMBERT_2_SECOND_STDP_ERROR : Second standard parallel outside of valid
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* range (-89 59 59.0 to 89 59 59.0 degrees)
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* LAMBERT_2_ORIGIN_LAT_ERROR : Origin latitude outside of valid range
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* (-89 59 59.0 to 89 59 59.0 degrees)
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* LAMBERT_2_CENT_MER_ERROR : Central meridian outside of valid range
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* (-180 to 360 degrees)
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* LAMBERT_2_A_ERROR : Semi-major axis less than or equal to zero
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* LAMBERT_2_INV_F_ERROR : Inverse flattening outside of valid range
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* LAMBERT_2_HEMISPHERE_ERROR : Standard parallels cannot be opposite latitudes
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* LAMBERT_2_FIRST_SECOND_ERROR : The 1st & 2nd standard parallels cannot
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* LAMBERT_2 is intended for reuse by any application that performs a Lambert
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* Conformal Conic (2 parallel) projection or its inverse.
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* Further information on LAMBERT_2 can be found in the Reuse Manual.
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* LAMBERT_2 originated from:
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* U.S. Army Topographic Engineering Center
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* Geospatial Information Division
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* Alexandria, VA 22310-3864
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* None apply to this component.
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* LAMBERT_2 has no restrictions.
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* LAMBERT_2 was tested and certified in the following environments:
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* 1. Solaris 2.5 with GCC, version 2.8.1
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* 2. Windows 98/2000 with MS Visual C++, version 6
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* 03-05-05 Original Code
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/***************************************************************************/
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#define LAMBERT_2_NO_ERROR 0x0000
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#define LAMBERT_2_LAT_ERROR 0x0001
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#define LAMBERT_2_LON_ERROR 0x0002
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#define LAMBERT_2_EASTING_ERROR 0x0004
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#define LAMBERT_2_NORTHING_ERROR 0x0008
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#define LAMBERT_2_FIRST_STDP_ERROR 0x0010
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#define LAMBERT_2_SECOND_STDP_ERROR 0x0020
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#define LAMBERT_2_ORIGIN_LAT_ERROR 0x0040
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#define LAMBERT_2_CENT_MER_ERROR 0x0080
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#define LAMBERT_2_A_ERROR 0x0100
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#define LAMBERT_2_INV_F_ERROR 0x0200
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#define LAMBERT_2_HEMISPHERE_ERROR 0x0400
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#define LAMBERT_2_FIRST_SECOND_ERROR 0x0800
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#define LAMBERT_2_SCALE_FACTOR_ERROR 0x1000
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/***************************************************************************/
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* FUNCTION PROTOTYPES
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/* ensure proper linkage to c++ programs */
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long Set_Lambert_2_Parameters(double a,
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double Origin_Latitude,
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double Central_Meridian,
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double Std_Parallel_1,
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double Std_Parallel_2,
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double False_Easting,
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double False_Northing);
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* The function Set_Lambert_2_Parameters receives the ellipsoid parameters and
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* Lambert Conformal Conic (2 parallel) projection parameters as inputs, and sets the
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* corresponding state variables. If any errors occur, the error code(s)
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* are returned by the function, otherwise LAMBERT_2_NO_ERROR is returned.
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* a : Semi-major axis of ellipsoid, in meters (input)
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* f : Flattening of ellipsoid (input)
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* Origin_Latitude : Latitude of origin in radians (input)
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* Central_Meridian : Longitude of origin in radians (input)
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* Std_Parallel_1 : First standard parallel (input)
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* Std_Parallel_2 : Second standard parallel (input)
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* False_Easting : False easting in meters (input)
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* False_Northing : False northing in meters (input)
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* Note that when the two standard parallel parameters are both set to the
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* same latitude value, the result is a Lambert Conformal Conic projection
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* with one standard parallel at the specified latitude.
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void Get_Lambert_2_Parameters(double *a,
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double *Origin_Latitude,
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double *Central_Meridian,
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double *Std_Parallel_1,
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double *Std_Parallel_2,
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double *False_Easting,
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double *False_Northing);
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* The function Get_Lambert_2_Parameters returns the current ellipsoid
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* parameters and Lambert Conformal Conic (2 parallel) projection parameters.
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* a : Semi-major axis of ellipsoid, in meters (output)
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* f : Flattening of ellipsoid (output)
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* Origin_Latitude : Latitude of origin, in radians (output)
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* Central_Meridian : Longitude of origin, in radians (output)
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* Std_Parallel_1 : First standard parallel (output)
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* Std_Parallel_2 : Second standard parallel (output)
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* False_Easting : False easting, in meters (output)
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* False_Northing : False northing, in meters (output)
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long Convert_Geodetic_To_Lambert_2 (double Latitude,
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* The function Convert_Geodetic_To_Lambert_2 converts Geodetic (latitude and
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* longitude) coordinates to Lambert Conformal Conic (2 parallel) projection (easting
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* and northing) coordinates, according to the current ellipsoid and
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* Lambert Conformal Conic (2 parallel) projection parameters. If any errors occur, the
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* error code(s) are returned by the function, otherwise LAMBERT_2_NO_ERROR is
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* Latitude : Latitude in radians (input)
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* Longitude : Longitude in radians (input)
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* Easting : Easting (X) in meters (output)
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* Northing : Northing (Y) in meters (output)
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long Convert_Lambert_2_To_Geodetic (double Easting,
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* The function Convert_Lambert_2_To_Geodetic converts Lambert Conformal
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* Conic (2 parallel) projection (easting and northing) coordinates to Geodetic
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* (latitude and longitude) coordinates, according to the current ellipsoid
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* and Lambert Conformal Conic (2 parallel) projection parameters. If any errors occur,
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* the error code(s) are returned by the function, otherwise LAMBERT_2_NO_ERROR
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* Easting : Easting (X) in meters (input)
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* Northing : Northing (Y) in meters (input)
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* Latitude : Latitude in radians (output)
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* Longitude : Longitude in radians (output)
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#endif /* LAMBERT_2_H */
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dt_cc/lambert_2/lambert_2.h
