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| author | Frank Warmerdam <warmerdam@pobox.com> | 1999-03-18 16:34:52 +0000 |
|---|---|---|
| committer | Frank Warmerdam <warmerdam@pobox.com> | 1999-03-18 16:34:52 +0000 |
| commit | 565a4bd035b9d4a83955808efef20f1d8dfa24cf (patch) | |
| tree | 75785fc897708023f1ccdaf40079afcbaaf0fd3a /src/PJ_wag3.c | |
| download | PROJ-565a4bd035b9d4a83955808efef20f1d8dfa24cf.tar.gz PROJ-565a4bd035b9d4a83955808efef20f1d8dfa24cf.zip | |
New
git-svn-id: http://svn.osgeo.org/metacrs/proj/trunk@776 4e78687f-474d-0410-85f9-8d5e500ac6b2
Diffstat (limited to 'src/PJ_wag3.c')
| -rw-r--r-- | src/PJ_wag3.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/PJ_wag3.c b/src/PJ_wag3.c new file mode 100644 index 00000000..30b1a38a --- /dev/null +++ b/src/PJ_wag3.c @@ -0,0 +1,27 @@ +#ifndef lint +static const char SCCSID[]="@(#)PJ_wag3.c 4.1 94/02/15 GIE REL"; +#endif +#define PROJ_PARMS__ \ + double C_x; +#define PJ_LIB__ +# include <projects.h> +PROJ_HEAD(wag3, "Wagner III") "\n\tPCyl., Sph."; +#define TWOTHIRD 0.6666666666666666666667 +FORWARD(s_forward); /* spheroid */ + xy.x = P->C_x * lp.lam * cos(TWOTHIRD * lp.phi); + xy.y = lp.phi; + return (xy); +} +INVERSE(s_inverse); /* spheroid */ + lp.phi = xy.y; + lp.lam = xy.x / (P->C_x * cos(TWOTHIRD * lp.phi)); + return (lp); +} +FREEUP; if (P) pj_dalloc(P); } +ENTRY0(wag3) + double ts; + + ts = pj_param(P->params, "rlat_ts").f; + P->C_x = cos(ts) / cos(2.*ts/3.); + P->es = 0.; P->inv = s_inverse; P->fwd = s_forward; +ENDENTRY(P) |