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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_LIB__
# include <lib_proj.h>
#define RPI 0.1591549430918953357688837633
#define ALT 0.99989
#define TEST 1.5564
PROJ_HEAD(near_con, "Semiconformal Pseudocylindrical") "\n\tPCyl, Sph., no inv.";
FORWARD(s_forward); /* spheroid */
double p, theta;
(void) P; /* avoid warning */
p = lp.phi < -TEST ? -ALT : lp.phi > TEST ? ALT : sin(lp.phi);
theta = RPI * log((1. + p)/(1. - p));
xy.x = lp.lam * cos(theta);
xy.y = PI * sin(theta);
return (xy);
}
FREEUP; if (P) free(P); }
ENTRY0(near_con) P->es = 0.; P->inv = 0; P->fwd = s_forward; ENDENTRY(P)
/*
** Log: proj_semiconf.c
** Revision 3.1 2006/01/11 01:38:18 gie
** Initial
**
*/
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