/usr/include/ossim/base/datum.h is in libossim-dev 1.8.16-4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 | #ifndef DATUM_H
#define DATUM_H
/***************************************************************************/
/* RSC IDENTIFIER: Datum
*
* ABSTRACT
*
* This component provides datum shifts for a large collection of local
* datums, WGS72, and WGS84. A particular datum can be accessed by using its
* standard 5-letter code to find its index in the datum table. The index
* can then be used to retrieve the name, type, ellipsoid code, and datum
* shift parameters, and to perform shifts to or from that datum.
*
* By sequentially retrieving all of the datum codes and/or names, a menu
* of the available datums can be constructed. The index values resulting
* from selections from this menu can then be used to access the parameters
* of the selected datum, or to perform datum shifts involving that datum.
*
* This component supports both 3-parameter local datums, for which only X,
* Y, and Z translations relative to WGS 84 have been defined, and
* 7-parameter local datums, for which X, Y, and Z rotations, and a scale
* factor, are also defined. It also includes entries for WGS 84 (with an
* index of 0), and WGS 72 (with an index of 1), but no shift parameter
* values are defined for these.
*
* This component provides datum shift functions for both geocentric and
* geodetic coordinates. WGS84 is used as an intermediate state when
* shifting from one local datum to another. When geodetic coordinates are
* given Molodensky's method is used, except near the poles where the 3-step
* step method is used instead. Specific algorithms are used for shifting
* between WGS72 and WGS84.
*
* This component depends on two data files, named 3_param.dat and
* 7_param.dat, which contain the datum parameter values. Copies of these
* files must be located in the directory specified by the value of the
* environment variable "DATUM_DATA", if defined, or else in the current
* directory whenever a program containing this component is executed.
*
* Additional datums can be added to these files, either manually or using
* the Create_Datum function. However, if a large number of datums are
* added, the datum table array sizes in this component will have to be
* increased.
*
* This component depends on two other components: the Ellipsoid component
* for access to ellipsoid parameters; and the Geocentric component for
* conversions between geodetic and geocentric coordinates.
*
* ERROR HANDLING
*
* This component checks for input file errors and input parameter errors.
* 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:
*
* DATUM_NO_ERROR : No errors occurred in function
* DATUM_NOT_INITIALIZED_ERROR : Datum module has not been initialized
* DATUM_7PARAM_FILE_OPEN_ERROR : 7 parameter file opening error
* DATUM_7PARAM_FILE_PARSING_ERROR : 7 parameter file structure error
* DATUM_7PARAM_OVERFLOW_ERROR : 7 parameter table overflow
* DATUM_3PARAM_FILE_OPEN_ERROR : 3 parameter file opening error
* DATUM_3PARAM_FILE_PARSING_ERROR : 3 parameter file structure error
* DATUM_3PARAM_OVERFLOW_ERROR : 3 parameter table overflow
* DATUM_INVALID_INDEX_ERROR : Index out of valid range (less than one
* or more than Datum_Count)
* DATUM_INVALID_SRC_INDEX_ERROR : Source datum index invalid
* DATUM_INVALID_DEST_INDEX_ERROR : Destination datum index invalid
* DATUM_INVALID_CODE_ERROR : Datum code not found in table
* DATUM_LAT_ERROR : Latitude out of valid range (-90 to 90)
* DATUM_LON_ERROR : Longitude out of valid range (-180 to
* 360)
* DATUM_SIGMA_ERROR : Standard error values must be positive
* (or -1 if unknown)
* DATUM_DOMAIN_ERROR : Domain of validity not well defined
* DATUM_ELLIPSE_ERROR : Error in ellipsoid module
*
*
* REUSE NOTES
*
* Datum is intended for reuse by any application that needs access to
* datum shift parameters relative to WGS 84.
*
*
* REFERENCES
*
* Further information on Datum can be found in the Reuse Manual.
*
* Datum originated from : U.S. Army Topographic Engineering Center (USATEC)
* Geospatial Information Division (GID)
* 7701 Telegraph Road
* Alexandria, VA 22310-3864
*
* LICENSES
*
* None apply to this component.
*
* RESTRICTIONS
*
* Datum has no restrictions.
*
* ENVIRONMENT
*
* Datum was tested and certified in the following environments:
*
* 1. Solaris 2.5 with GCC 2.8.1
* 2. MS Windows 95 with MS Visual C++ 6
*
* MODIFICATIONS
*
* Date Description
* ---- -----------
* 03/30/97 Original Code
* 05/28/99 Added user-definable datums (for JMTK)
* Added datum domain of validity checking (for JMTK)
* Added datum shift accuracy calculation (for JMTK)
*/
/***************************************************************************/
/*
* DEFINES
*/
#define DATUM_NO_ERROR 0x0000
#define DATUM_NOT_INITIALIZED_ERROR 0x0001
#define DATUM_7PARAM_FILE_OPEN_ERROR 0x0002
#define DATUM_7PARAM_FILE_PARSING_ERROR 0x0004
#define DATUM_7PARAM_OVERFLOW_ERROR 0x0008
#define DATUM_3PARAM_FILE_OPEN_ERROR 0x0010
#define DATUM_3PARAM_FILE_PARSING_ERROR 0x0020
#define DATUM_3PARAM_OVERFLOW_ERROR 0x0040
#define DATUM_INVALID_INDEX_ERROR 0x0080
#define DATUM_INVALID_SRC_INDEX_ERROR 0x0100
#define DATUM_INVALID_DEST_INDEX_ERROR 0x0200
#define DATUM_INVALID_CODE_ERROR 0x0400
#define DATUM_LAT_ERROR 0x0800
#define DATUM_LON_ERROR 0x1000
#define DATUM_SIGMA_ERROR 0x2000
#define DATUM_DOMAIN_ERROR 0x4000
#define DATUM_ELLIPSE_ERROR 0x8000
/***************************************************************************/
/*
* GLOBAL DECLARATIONS
*/
typedef enum Datum_Types
{
Three_Param_Datum,
Seven_Param_Datum,
WGS84_Datum,
WGS72_Datum
} Datum_Type; /* different types of datums */
/***************************************************************************/
/*
* FUNCTION PROTOTYPES
*/
/* ensure proper linkage to c++ programs */
#ifdef __cplusplus
extern "C" {
#endif
long Initialize_Datums(void);
/*
* The function Initialize_Datums creates the datum table from two external
* files. If an error occurs, the initialization stops and an error code is
* returned. This function must be called before any of the other functions
* in this component.
*/
long Create_Datum ( const char *Code,
const char *Name,
const char *Ellipsoid_Code,
double Delta_X,
double Delta_Y,
double Delta_Z,
double Sigma_X,
double Sigma_Y,
double Sigma_Z,
double South_latitude,
double North_latitude,
double West_longitude,
double East_longitude);
/*
* Code : 5-letter new datum code. (input)
* Name : Name of the new datum (input)
* Ellipsoid_Code : 2-letter code for the associated ellipsoid (input)
* Delta_X : X translation to WGS84 in meters (input)
* Delta_Y : Y translation to WGS84 in meters (input)
* Delta_Z : Z translation to WGS84 in meters (input)
* Sigma_X : Standard error in X in meters (input)
* Sigma_Y : Standard error in Y in meters (input)
* Sigma_Z : Standard error in Z in meters (input)
* South_latitude : Southern edge of validity rectangle in radians(input)
* North_latitude : Northern edge of validity rectangle in radians(input)
* West_longitude : Western edge of validity rectangle in radians (input)
* East_longitude : Eastern edge of validity rectangle in radians (input)
*
* The function Create_Datum creates a new local (3-parameter) datum with the
* specified code, name, shift values, and standard error values. If the
* datum table has not been initialized, the specified code is already in use,
* or a new version of the 3-param.dat file cannot be created, an error code
* is returned, otherwise DATUM_NO_ERROR is returned. Note that the indexes
* of all datums in the datum table may be changed by this function.
*/
long Datum_Count ( long *Count );
/*
* The function Datum_Count returns the number of Datums in the table
* if the table was initialized without error.
*
* Count : number of datums in the datum table (output)
*/
long Datum_Index ( const char *Code,
long *Index );
/*
* The function Datum_Index returns the index of the datum with the
* specified code.
*
* Code : The datum code being searched for (input)
* Index : The index of the datum in the table with the (output)
* specified code
*/
long Datum_Code ( const long Index,
char *Code );
/*
* The function Datum_Code returns the 5-letter code of the datum
* referenced by index.
*
* Index : The index of a given datum in the datum table (input)
* Code : The datum code of the datum referenced by index (output)
*/
long Datum_Name ( const long Index,
char *Name );
/*
* The function Datum_Name returns the name of the datum referenced by
* index.
*
* Index : The index of a given datum in the datum table (input)
* Name : The datum name of the datum referenced by index (output)
*/
long Datum_Ellipsoid_Code ( const long Index,
char *Code );
/*
* The function Datum_Ellipsoid_Code returns the 2-letter ellipsoid code
* for the ellipsoid associated with the datum referenced by index.
*
* Index : The index of a given datum in the datum table (input)
* Code : The ellisoid code for the ellipsoid associated with the (output)
* datum referenced by index
*/
long Get_Datum_Type ( const long Index,
Datum_Type *Type );
/*
* The function Get_Datum_Type returns the type of the datum referenced by
* index.
*
* Index : The index of a given datum in the datum table (input)
* Type : The type of the datum referenced by index (output)
*/
long Datum_Seven_Parameters ( const long Index,
double *Delta_X,
double *Delta_Y,
double *Delta_Z,
double *Rx,
double *Ry,
double *Rz,
double *Scale_Factor );
/*
* The function Datum_Seven_Parameters returns the seven parameters
* for the datum referenced by index.
*
* Index : The index of a given datum in the datum table (input)
* Delta_X : X translation in meters (output)
* Delta_Y : Y translation in meters (output)
* Delta_Z : Z translation in meters (output)
* Rx : X rotation in radians (output)
* Rx : Y rotation in radians (output)
* Ry : Z rotation in radians (output)
* Scale_Factor : Scale factor (output)
*/
long Datum_Three_Parameters ( const long Index,
double *Delta_X,
double *Delta_Y,
double *Delta_Z);
/*
* The function Datum_Three_Parameters returns the three parameters
* for the datum referenced by index.
*
* Index : The index of a given datum in the datum table (input)
* Delta_X : X translation in meters (output)
* Delta_Y : Y translation in meters (output)
* Delta_Z : Z translation in meters (output)
*/
long Datum_Errors ( const long Index,
double *Sigma_X,
double *Sigma_Y,
double *Sigma_Z);
/*
* The function Datum_Errors returns the standard errors in X,Y, & Z
* for the datum referenced by index.
*
* Index : The index of a given datum in the datum table (input)
* Sigma_X : Standard error in X in meters (output)
* Sigma_Y : Standard error in Y in meters (output)
* Sigma_Z : Standard error in Z in meters (output)
*/
long Datum_Valid_Rectangle ( const long Index,
double *South_latitude,
double *North_latitude,
double *West_longitude,
double *East_longitude);
/*
* The function Datum_Valid_Rectangle returns the edges of the validity
* rectangle for the datum referenced by index.
*
* Index : The index of a given datum in the datum table (input)
* South_latitude : Southern edge of validity rectangle in radians (input)
* North_latitude : Northern edge of validity rectangle in radians (input)
* West_longitude : Western edge of validity rectangle in radians (input)
* East_longitude : Eastern edge of validity rectangle in radians (input)
*/
long Valid_Datum ( const long Index,
double latitude,
double longitude,
long *result);
/*
* This function checks whether or not the specified location is within the
* validity rectangle for the specified datum. It returns zero if the specified
* location is NOT within the validity rectangle, and returns 1 otherwise.
*
* Index : The index of a given datum in the datum table (input)
* latitude : Latitude of the location to be checked in radians (input)
* longitude : Longitude of the location to be checked in radians (input)
* result : Indicates whether location is inside (1) or outside (0)
* of the validity rectangle of the specified datum (output)
*/
long Geocentric_Shift_To_WGS84 (const long Index,
const double X,
const double Y,
const double Z,
double *X_WGS84,
double *Y_WGS84,
double *Z_WGS84);
/*
* This function shifts a geocentric coordinate (X, Y, Z in meters) relative
* to the datum referenced by index to a geocentric coordinate (X, Y, Z in
* meters) relative to WGS84.
*
* Index : Index of local datum (input)
* X : X coordinate relative to the source datum (input)
* Y : Y coordinate relative to the source datum (input)
* Z : Z coordinate relative to the source datum (input)
* X_WGS84 : X coordinate relative to WGS84 (output)
* Y_WGS84 : Y coordinate relative to WGS84 (output)
* Z_WGS84 : Z coordinate relative to WGS84 (output)
*/
long Geocentric_Shift_From_WGS84 (const double X_WGS84,
const double Y_WGS84,
const double Z_WGS84,
const long Index,
double *X,
double *Y,
double *Z);
/*
* This function shifts a geocentric coordinate (X, Y, Z in meters) relative
* to WGS84 to a geocentric coordinate (X, Y, Z in meters) relative to the
* local datum referenced by index.
*
* X_WGS84 : X coordinate relative to WGS84 (input)
* Y_WGS84 : Y coordinate relative to WGS84 (input)
* Z_WGS84 : Z coordinate relative to WGS84 (input)
* Index : Index of destination datum (input)
* X : X coordinate relative to the destination datum (output)
* Y : Y coordinate relative to the destination datum (output)
* Z : Z coordinate relative to the destination datum (output)
*/
long Geocentric_Datum_Shift ( const long Index_in,
const double X_in,
const double Y_in,
const double Z_in,
const long Index_out,
double *X_out,
double *Y_out,
double *Z_out);
/*
* This function shifts a geocentric coordinate (X, Y, Z in meters) relative
* to the source datum to geocentric coordinate (X, Y, Z in meters) relative
* to the destination datum.
*
* Index_in : Index of source datum (input)
* X_in : X coordinate relative to source datum (input)
* Y_in : Y coordinate relative to source datum (input)
* Z_in : Z coordinate relative to source datum (input)
* Index_out : Index of destination datum (input)
* X_out : X coordinate relative to destination datum (output)
* Y_out : Y coordinate relative to destination datum (output)
* Z_out : Z coordinate relative to destination datum (output)
*/
long Geodetic_Shift_To_WGS84 (const long Index,
const double Lat_in,
const double Lon_in,
const double Hgt_in,
double *WGS84_Lat,
double *WGS84_Lon,
double *WGS84_Hgt);
/*
* This function shifts geodetic coordinates relative to a given source datum
* to geodetic coordinates relative to WGS84.
*
* Index : Index of source datum (input)
* Lat_in : Latitude in radians relative to source datum (input)
* Lon_in : Longitude in radians relative to source datum (input)
* Hgt_in : Height in meters relative to source datum's ellipsoid (input)
* WGS84_Lat : Latitude in radians relative to WGS84 (output)
* WGS84_Lon : Longitude in radians relative to WGS84 (output)
* WGS84_Hgt : Height in meters relative to WGS84 ellipsoid (output)
*/
long Geodetic_Shift_From_WGS84( const double WGS84_Lat,
const double WGS84_Lon,
const double WGS84_Hgt,
const long Index,
double *Lat_out,
double *Lon_out,
double *Hgt_out);
/*
* This function shifts geodetic coordinates relative to a WGS84
* to geodetic coordinates relative to a given local datum.
*
* WGS84_Lat : Latitude in radians relative to WGS84 (input)
* WGS84_Lon : Longitude in radians relative to WGS84 (input)
* WGS84_Hgt : Height in meters relative to WGS84 ellipsoid (input)
* Index : Index of destination datum (input)
* Lat_in : Latitude in radians relative to destination datum (output)
* Lon_in : Longitude in radians relative to destination datum (output)
* Hgt_in : Height in meters relative to destination datum's ellipsoid (output)
*/
long Geodetic_Datum_Shift ( const long Index_in,
const double Lat_in,
const double Lon_in,
const double Hgt_in,
const long Index_out,
double *Lat_out,
double *Lon_out,
double *Hgt_out);
/*
* This function shifts geodetic coordinates (latitude, longitude in radians
* and height in meters) relative to the source datum to geodetic coordinates
* (latitude, longitude in radians and height in meters) relative to the
* destination datum.
*
* Index_in : Index of source datum (input)
* Lat_in : Latitude in radians relative to source datum (input)
* Lon_in : Longitude in radians relative to source datum (input)
* Hgt_in : Height in meters relative to source datum's ellipsoid (input)
* Index_out : Index of destination datum (input)
* Lat_out : Latitude in radians relative to destination datum (output)
* Lon_out : Longitude in radians relative to destination datum (output)
* Hgt_out : Height in meters relative to destination datum's ellipsoid (output)
*/
long Datum_Shift_Error (const long Index_in,
const long Index_out,
double latitude,
double longitude,
double *ce90,
double *le90,
double *se90);
/*
* This function returns the 90% horizontal (circular), vertical (linear), and
* spherical errors for a shift from the specified source datum to the
* specified destination datum at the specified location.
*
* Index_in : Index of source datum (input)
* Index_out : Index of destination datum (input)
* latitude : Latitude of point being converted in radians (input)
* longitude : Longitude of point being converted in radians (input)
* ce90 : Combined 90% circular horizontal error in meters (output)
* le90 : Combined 90% linear vertical error in meters (output)
* se90 : Combined 90% spherical error in meters (output)
*/
#ifdef __cplusplus
}
#endif
#endif /* DATUM_H */
|