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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 C0, C2, C4, CP1, CP3, CP5; \
int pointy;
#define PROJ_LIB__
#include <lib_proj.h>
PROJ_HEAD(fc_gen, "General optimization") "\n\tPCyl, Sph., No Inv.";
PROJ_HEAD(fc_pe, "Canters low_error, 1/2 pole length") "\n\tPCyl, Sph., No Inv.";
PROJ_HEAD(fc_ar, "Canters low_error, correct axis ratio") "\n\tPCyl, Sph., No Inv.";
PROJ_HEAD(fc_pp, "Canters low_error, pointed pole") "\n\tPCyl, Sph., No Inv.";
FORWARD(s_forward); /* sphere */
double phi2 = lp.phi * lp.phi;
xy.x = lp.lam * (P->C0 + phi2 * (P->C2 + phi2 * P->C4));
xy.y = lp.phi * (P->CP1 + phi2 * (P->CP3 + phi2 * P->CP5));
if (P->pointy)
xy.x *= cos(lp.phi);
return (xy);
}
FREEUP; if (P) free(P); }
static void
setup(PROJ *P) {
P->es = 0;
P->fwd = s_forward;
}
ENTRY0(fc_gen)
P->C0 = 0.7920;
P->C2 = -0.0978;
P->C4 = 0.0059;
P->CP1 = 1.0304;
P->CP3 = 0.0127;
P->CP5 = -0.0250;
P->pointy = 0;
setup(P);
ENDENTRY(P)
ENTRY0(fc_pe)
P->C0 = 0.7879;
P->C2 = -0.0238;
P->C4 = -0.0551;
P->CP1 = 1.0370;
P->CP3 = -0.0059;
P->CP5 = -0.0147;
P->pointy = 0;
setup(P);
ENDENTRY(P)
ENTRY0(fc_ar)
P->C0 = 0.8378;
P->C2 = -0.1053;
P->C4 = -0.0011;
P->CP1 = 1.0150;
P->CP3 = 0.0207;
P->CP5 = -0.0375;
P->pointy = 0;
setup(P);
ENDENTRY(P)
ENTRY0(fc_pp)
P->C0 = 0.8333;
P->C2 = 0.3385;
P->C4 = 0.0942;
P->CP1 = 1.0114;
P->CP3 = 0.0243;
P->CP5 = -0.0391;
P->pointy = 1;
setup(P);
ENDENTRY(P)
/*
** Log: proj_fc-loerr.c
** Revision 3.2 2006/12/03 16:14:38 gie
** corrected sign of poitey pole coefficent
**
** Revision 3.1 2006/01/11 01:38:18 gie
** Initial
**
*/
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