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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_tcc.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_tcc.c')
| -rw-r--r-- | src/PJ_tcc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/PJ_tcc.c b/src/PJ_tcc.c new file mode 100644 index 00000000..feb2d4e9 --- /dev/null +++ b/src/PJ_tcc.c @@ -0,0 +1,20 @@ +#ifndef lint +static const char SCCSID[]="@(#)PJ_tcc.c 4.1 94/02/15 GIE REL"; +#endif +#define PROJ_PARMS__ \ + double ap; +#define EPS10 1.e-10 +#define PJ_LIB__ +#include <projects.h> +PROJ_HEAD(tcc, "Transverse Central Cylindrical") "\n\tCyl, Sph, no inv."; +FORWARD(s_forward); /* spheroid */ + double b, bt; + + b = cos(lp.phi) * sin(lp.lam); + if ((bt = 1. - b * b) < EPS10) F_ERROR; + xy.x = b / sqrt(bt); + xy.y = atan2(tan(lp.phi) , cos(lp.lam)); + return (xy); +} +FREEUP; if (P) pj_dalloc(P); } +ENTRY0(tcc) P->es = 0.; P->fwd = s_forward; ENDENTRY(P) |