diff options
Diffstat (limited to 'src/PJ_mill.c')
| -rw-r--r-- | src/PJ_mill.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/PJ_mill.c b/src/PJ_mill.c new file mode 100644 index 00000000..a9e40a74 --- /dev/null +++ b/src/PJ_mill.c @@ -0,0 +1,18 @@ +#ifndef lint +static const char SCCSID[]="@(#)PJ_mill.c 4.1 94/02/15 GIE REL"; +#endif +#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) |