/******************************************************************************

 * Project:  PROJ.4

 * Purpose:  Conversion from geographic to geocentric latitude and back.

 * Author:   Thomas Knudsen (2017)

 *

 ******************************************************************************

 * Copyright (c) 2017, SDFE, http://www.sdfe.dk

 * Copyright (c) 2017, Thomas Knudsen

 *

 * 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 <math.h>

#include "proj.h"

#include "proj_internal.h"

PROJ_HEAD(geoc, "Geocentric Latitude");

/* Geographical to geocentric */

static void forward(PJ_COORD &coo, PJ *P) {

    coo = pj_geocentric_latitude(P, PJ_FWD, coo);

}

/* Geocentric to geographical */

static void inverse(PJ_COORD &coo, PJ *P) {

    coo = pj_geocentric_latitude(P, PJ_INV, coo);

}

static PJ *PJ_CONVERSION(geoc, 1) {

    P->inv4d = inverse;

    P->fwd4d = forward;

    P->left = PJ_IO_UNITS_RADIANS;

    P->right = PJ_IO_UNITS_RADIANS;

    P->is_latlong = 1;

    return P;

}