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| author | Frank Warmerdam <warmerdam@pobox.com> | 1999-03-18 16:34:52 +0000 |
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| committer | Frank Warmerdam <warmerdam@pobox.com> | 1999-03-18 16:34:52 +0000 |
| commit | 565a4bd035b9d4a83955808efef20f1d8dfa24cf (patch) | |
| tree | 75785fc897708023f1ccdaf40079afcbaaf0fd3a /src/PJ_putp3.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_putp3.c')
| -rw-r--r-- | src/PJ_putp3.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/PJ_putp3.c b/src/PJ_putp3.c new file mode 100644 index 00000000..c228423c --- /dev/null +++ b/src/PJ_putp3.c @@ -0,0 +1,29 @@ +#ifndef lint +static const char SCCSID[]="@(#)PJ_putp3.c 4.1 94/02/15 GIE REL"; +#endif +#define PROJ_PARMS__ \ + double A; +#define PJ_LIB__ +# include <projects.h> +PROJ_HEAD(putp3, "Putnins P3") "\n\tPCyl., Sph."; +PROJ_HEAD(putp3p, "Putnins P3'") "\n\tPCyl., no inv., Sph."; +#define C 0.79788456 +#define RPISQ 0.1013211836 +FORWARD(s_forward); /* spheroid */ + xy.x = C * lp.lam * (1. - P->A * lp.phi * lp.phi); + xy.y = C * lp.phi; + return (xy); +} +INVERSE(s_inverse); /* spheroid */ + lp.phi = xy.y / C; + lp.lam = xy.x / (C * (1. - P->A * lp.phi * lp.phi)); + return (lp); +} +FREEUP; if (P) pj_dalloc(P); } + static PJ * +setup(PJ *P) { + P->es = 0.; P->inv = s_inverse; P->fwd = s_forward; + return P; +} +ENTRY0(putp3) P->A = 4. * RPISQ; ENDENTRY(setup(P)) +ENTRY0(putp3p) P->A = 2. * RPISQ; ENDENTRY(setup(P)) |