diff options
Diffstat (limited to 'src/PJ_eck5.c')
| -rw-r--r-- | src/PJ_eck5.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/PJ_eck5.c b/src/PJ_eck5.c new file mode 100644 index 00000000..00b2cae6 --- /dev/null +++ b/src/PJ_eck5.c @@ -0,0 +1,21 @@ +#ifndef lint +static const char SCCSID[]="@(#)PJ_eck5.c 4.1 94/02/15 GIE REL"; +#endif +#define PJ_LIB__ +# include <projects.h> +PROJ_HEAD(eck5, "Eckert V") "\n\tPCyl, Sph."; +#define XF 0.44101277172455148219 +#define RXF 2.26750802723822639137 +#define YF 0.88202554344910296438 +#define RYF 1.13375401361911319568 +FORWARD(s_forward); /* spheroid */ + xy.x = XF * (1. + cos(lp.phi)) * lp.lam; + xy.y = YF * lp.phi; + return (xy); +} +INVERSE(s_inverse); /* spheroid */ + lp.lam = RXF * xy.x / (1. + cos( lp.phi = RYF * xy.y)); + return (lp); +} +FREEUP; if (P) pj_dalloc(P); } +ENTRY0(eck5); P->es = 0.; P->inv = s_inverse; P->fwd = s_forward; ENDENTRY(P) |