datums.cpp

/******************************************************************************
 * Project:  PROJ.4
 * Purpose:  Built in datum list.
 * Author:   Frank Warmerdam, warmerda@home.com
 *
 ******************************************************************************
 * Copyright (c) 2000, Frank Warmerdam
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *****************************************************************************/

#include <stddef.h>

#include "proj.h"

#define PJ_DATUMS_
#include "proj_internal.h"

/*
 * The ellipse code must match one from pj_ellps.c.  The datum id should
 * be kept to 12 characters or less if possible.  Use the official OGC
 * datum name for the comments if available.
 */

static const struct PJ_DATUMS pj_datums[] = {
    /* id       definition                               ellipse  comments */
    /* --       ----------                               -------  -------- */
    {"WGS84", "towgs84=0,0,0", "WGS84", ""},
    {"GGRS87", "towgs84=-199.87,74.79,246.62", "GRS80",
     "Greek_Geodetic_Reference_System_1987"},
    {"NAD83", "towgs84=0,0,0", "GRS80", "North_American_Datum_1983"},
    {"NAD27", "nadgrids=@conus,@alaska,@ntv2_0.gsb,@ntv1_can.dat", "clrk66",
     "North_American_Datum_1927"},
    {"potsdam", /*"towgs84=598.1,73.7,418.2,0.202,0.045,-2.455,6.7",*/
     "nadgrids=@BETA2007.gsb", "bessel", "Potsdam Rauenberg 1950 DHDN"},
    {"carthage", "towgs84=-263.0,6.0,431.0", "clrk80ign",
     "Carthage 1934 Tunisia"},
    {"hermannskogel", "towgs84=577.326,90.129,463.919,5.137,1.474,5.297,2.4232",
     "bessel", "Hermannskogel"},
    {"ire65", "towgs84=482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15",
     "mod_airy", "Ireland 1965"},
    {"nzgd49", "towgs84=59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993", "intl",
     "New Zealand Geodetic Datum 1949"},
    {"OSGB36", "towgs84=446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894",
     "airy", "Airy 1830"},
    {nullptr, nullptr, nullptr, nullptr}};

const struct PJ_DATUMS *pj_get_datums_ref() { return pj_datums; }

static const struct PJ_PRIME_MERIDIANS pj_prime_meridians[] = {
    /* id        definition                         */
    /* --        ----------                         */
    {"greenwich", "0dE"},
    {"lisbon", "9d07'54.862\"W"},
    {"paris", "2d20'14.025\"E"},
    {"bogota", "74d04'51.3\"W"},
    {"madrid", "3d41'16.58\"W"},
    {"rome", "12d27'8.4\"E"},
    {"bern", "7d26'22.5\"E"},
    {"jakarta", "106d48'27.79\"E"},
    {"ferro", "17d40'W"},
    {"brussels", "4d22'4.71\"E"},
    {"stockholm", "18d3'29.8\"E"},
    {"athens", "23d42'58.815\"E"},
    {"oslo", "10d43'22.5\"E"},
    {"copenhagen", "12d34'40.35\"E"},
    {nullptr, nullptr}};

const PJ_PRIME_MERIDIANS *proj_list_prime_meridians(void) {
    return pj_prime_meridians;
}