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/*
** libproj -- library of cartographic projections
**
** Copyright (c) 2003, 2006 Gerald I. Evenden
*/
static const char
LIBPROJ_ID[] = "Id";
/*
** 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 PROJ_PARMS__ \
double m, rmn, q3, n;
#define PROJ_LIB__
# include <lib_proj.h>
PROJ_HEAD(urm5, "Urmaev V") "\n\tPCyl., Sph.\n\tn= q= m=";
FORWARD(s_forward); /* spheroid */
lp.phi = proj_asin(P->n * sin(lp.phi));
xy.x = P->m * lp.lam * cos(lp.phi);
xy.y = lp.phi * (1. + lp.phi * lp.phi * P->q3) * P->rmn;
return xy;
}
FREEUP; if (P) free(P); }
ENTRY0(urm5)
if (proj_param(P->params, "tn").i &&
proj_param(P->params, "tq").i &&
proj_param(P->params, "tm").i) {
P->n = proj_param(P->params, "dn").f;
P->q3 = proj_param(P->params, "dq").f / 3.;
P->m = proj_param(P->params, "dm").f;
} else {
P->n = 0.8;
P->q3 = 0.414524/3.;
P->m = 0.8773826753016616405461459;
}
P->rmn = 1. / (P->m * P->n);
P->es = 0.;
P->inv = 0;
P->fwd = s_forward;
ENDENTRY(P)
/*
** Log: proj_urm5.c
** Revision 3.1 2006/01/11 01:38:18 gie
** Initial
**
*/
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