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/******************************************************************************
* Project: PROJ.4
* Purpose: Stub projection for geocentric. The transformation isn't
* really done here since this code is 2D. The real transformation
* is handled by pj_transform.c.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 2002, 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.
*****************************************************************************/
#define PJ_LIB__
#include <projects.h>
PROJ_HEAD(geocent, "Geocentric") "\n\t";
static XY forward(LP lp, PJ *P) {
XY xy = {0.0,0.0};
(void) P;
xy.x = lp.lam;
xy.y = lp.phi;
return xy;
}
static LP inverse(XY xy, PJ *P) {
LP lp = {0.0,0.0};
(void) P;
lp.phi = xy.y;
lp.lam = xy.x;
return lp;
}
static void *freeup_new (PJ *P) {
if (0==P)
return 0;
return pj_dealloc(P);
}
static void freeup (PJ *P) {
freeup_new (P);
return;
}
PJ *PROJECTION(geocent) {
P->is_geocent = 1;
P->x0 = 0.0;
P->y0 = 0.0;
P->inv = inverse;
P->fwd = forward;
return P;
}
#ifndef PJ_SELFTEST
int pj_geocent_selftest (void) {return 0;}
#else
int pj_geocent_selftest (void) {
double tolerance_lp = 1e-10;
double tolerance_xy = 1e-7;
char e_args[] = {"+proj=geocent +ellps=GRS80 +lat_1=0.5 +lat_2=2"};
char s_args[] = {"+proj=geocent +a=6400000 +lat_1=0.5 +lat_2=2"};
LP fwd_in[] = {
{ 2, 1},
{ 2,-1},
{-2, 1},
{-2,-1}
};
XY e_fwd_expect[] = {
{ 222638.98158654713, 111319.49079327357},
{ 222638.98158654713, -111319.49079327357},
{-222638.98158654713, 111319.49079327357},
{-222638.98158654713, -111319.49079327357},
};
XY inv_in[] = {
{ 200, 100},
{ 200,-100},
{-200, 100},
{-200,-100}
};
LP e_inv_expect[] = {
{ 0.0017966305682390426, 0.00089831528411952132},
{ 0.0017966305682390426, -0.00089831528411952132},
{-0.0017966305682390426, 0.00089831528411952132},
{-0.0017966305682390426, -0.00089831528411952132},
};
return pj_generic_selftest (e_args, s_args, tolerance_xy, tolerance_lp, 4, 4, fwd_in, e_fwd_expect, 0, inv_in, e_inv_expect, 0);
}
#endif
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