File: PJ_mill.c

package info (click to toggle)
proj 4.8.0-5
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 25,780 kB
  • ctags: 2,042
  • sloc: sh: 355,854; ansic: 14,877; java: 316; makefile: 260; xml: 46
file content (15 lines) | stat: -rw-r--r-- 432 bytes parent folder | download | duplicates (15)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
#define PJ_LIB__
# include	<projects.h>
PROJ_HEAD(mill, "Miller Cylindrical") "\n\tCyl, Sph";
FORWARD(s_forward); /* spheroid */
	xy.x = lp.lam;
	xy.y = log(tan(FORTPI + lp.phi * .4)) * 1.25;
	return (xy);
}
INVERSE(s_inverse); /* spheroid */
	lp.lam = xy.x;
	lp.phi = 2.5 * (atan(exp(.8 * xy.y)) - FORTPI);
	return (lp);
}
FREEUP; if (P) pj_dalloc(P); }
ENTRY0(mill) P->es = 0.; P->inv = s_inverse; P->fwd = s_forward; ENDENTRY(P)