diff options
Diffstat (limited to 'src/PJ_goode.c')
| -rw-r--r-- | src/PJ_goode.c | 244 |
1 files changed, 122 insertions, 122 deletions
diff --git a/src/PJ_goode.c b/src/PJ_goode.c index 48fc9ad5..d44bd2a1 100644 --- a/src/PJ_goode.c +++ b/src/PJ_goode.c @@ -1,122 +1,122 @@ -#define PJ_LIB__
-#include <projects.h>
-
-PROJ_HEAD(goode, "Goode Homolosine") "\n\tPCyl, Sph.";
-
-#define Y_COR 0.05280
-#define PHI_LIM 0.71093078197902358062
-
-C_NAMESPACE PJ *pj_sinu(PJ *), *pj_moll(PJ *);
-
-struct pj_opaque {
- PJ *sinu;
- PJ *moll;
-};
-
-
-static XY s_forward (LP lp, PJ *P) { /* Spheroidal, forward */
- XY xy = {0.0,0.0};
- struct pj_opaque *Q = P->opaque;
-
- if (fabs(lp.phi) <= PHI_LIM)
- xy = Q->sinu->fwd(lp, Q->sinu);
- else {
- xy = Q->moll->fwd(lp, Q->moll);
- xy.y -= lp.phi >= 0.0 ? Y_COR : -Y_COR;
- }
- return xy;
-}
-
-
-static LP s_inverse (XY xy, PJ *P) { /* Spheroidal, inverse */
- LP lp = {0.0,0.0};
- struct pj_opaque *Q = P->opaque;
-
- if (fabs(xy.y) <= PHI_LIM)
- lp = Q->sinu->inv(xy, Q->sinu);
- else {
- xy.y += xy.y >= 0.0 ? Y_COR : -Y_COR;
- lp = Q->moll->inv(xy, Q->moll);
- }
- return lp;
-}
-
-
-static void *freeup_new (PJ *P) { /* Destructor */
- if (0==P)
- return 0;
- if (0==P->opaque)
- return pj_dealloc(P);
- if (P->opaque->sinu)
- pj_dealloc(P->opaque->sinu);
- if (P->opaque->moll)
- pj_dealloc(P->opaque->moll);
- pj_dealloc (P->opaque);
- return pj_dealloc(P);
-
-}
-
-
-static void freeup (PJ *P) {
- freeup_new (P);
- return;
-}
-
-
-PJ *PROJECTION(goode) {
- struct pj_opaque *Q = pj_calloc (1, sizeof (struct pj_opaque));
- if (0==Q)
- return freeup_new (P);
- P->opaque = Q;
-
- P->es = 0.;
- if (!(Q->sinu = pj_sinu(0)) || !(Q->moll = pj_moll(0)))
- E_ERROR_0;
- Q->sinu->es = 0.;
- Q->sinu->ctx = P->ctx;
- Q->moll->ctx = P->ctx;
- if (!(Q->sinu = pj_sinu(Q->sinu)) || !(Q->moll = pj_moll(Q->moll)))
- E_ERROR_0;
-
- P->fwd = s_forward;
- P->inv = s_inverse;
-
- return P;
-}
-
-
-#ifdef PJ_OMIT_SELFTEST
-int pj_goode_selftest (void) {return 0;}
-#else
-
-int pj_goode_selftest (void) {
- double tolerance_lp = 1e-10;
- double tolerance_xy = 1e-7;
-
- char s_args[] = {"+proj=goode +a=6400000 +lat_1=0.5 +lat_2=2"};
-
- LP fwd_in[] = {
- { 2, 1},
- { 2,-1},
- {-2, 1},
- {-2,-1}
- };
-
- XY s_fwd_expect[] = {
- { 223368.11902663155, 111701.07212763709},
{ 223368.11902663155, -111701.07212763709},
{-223368.11902663155, 111701.07212763709},
{-223368.11902663155, -111701.07212763709},
};
-
- XY inv_in[] = {
- { 200, 100},
- { 200,-100},
- {-200, 100},
- {-200,-100}
- };
-
- LP s_inv_expect[] = {
- { 0.0017904931100023887, 0.00089524655489191132},
{ 0.0017904931100023887, -0.00089524655489191132},
{-0.0017904931100023887, 0.00089524655489191132},
{-0.0017904931100023887, -0.00089524655489191132},
};
-
- return pj_generic_selftest (0, s_args, tolerance_xy, tolerance_lp, 4, 4, fwd_in, 0, s_fwd_expect, inv_in, 0, s_inv_expect);
-}
-
-
-#endif
+#define PJ_LIB__ +#include <projects.h> + +PROJ_HEAD(goode, "Goode Homolosine") "\n\tPCyl, Sph."; + +#define Y_COR 0.05280 +#define PHI_LIM 0.71093078197902358062 + +C_NAMESPACE PJ *pj_sinu(PJ *), *pj_moll(PJ *); + +struct pj_opaque { + PJ *sinu; + PJ *moll; +}; + + +static XY s_forward (LP lp, PJ *P) { /* Spheroidal, forward */ + XY xy = {0.0,0.0}; + struct pj_opaque *Q = P->opaque; + + if (fabs(lp.phi) <= PHI_LIM) + xy = Q->sinu->fwd(lp, Q->sinu); + else { + xy = Q->moll->fwd(lp, Q->moll); + xy.y -= lp.phi >= 0.0 ? Y_COR : -Y_COR; + } + return xy; +} + + +static LP s_inverse (XY xy, PJ *P) { /* Spheroidal, inverse */ + LP lp = {0.0,0.0}; + struct pj_opaque *Q = P->opaque; + + if (fabs(xy.y) <= PHI_LIM) + lp = Q->sinu->inv(xy, Q->sinu); + else { + xy.y += xy.y >= 0.0 ? Y_COR : -Y_COR; + lp = Q->moll->inv(xy, Q->moll); + } + return lp; +} + + +static void *freeup_new (PJ *P) { /* Destructor */ + if (0==P) + return 0; + if (0==P->opaque) + return pj_dealloc(P); + if (P->opaque->sinu) + pj_dealloc(P->opaque->sinu); + if (P->opaque->moll) + pj_dealloc(P->opaque->moll); + pj_dealloc (P->opaque); + return pj_dealloc(P); + +} + + +static void freeup (PJ *P) { + freeup_new (P); + return; +} + + +PJ *PROJECTION(goode) { + struct pj_opaque *Q = pj_calloc (1, sizeof (struct pj_opaque)); + if (0==Q) + return freeup_new (P); + P->opaque = Q; + + P->es = 0.; + if (!(Q->sinu = pj_sinu(0)) || !(Q->moll = pj_moll(0))) + E_ERROR_0; + Q->sinu->es = 0.; + Q->sinu->ctx = P->ctx; + Q->moll->ctx = P->ctx; + if (!(Q->sinu = pj_sinu(Q->sinu)) || !(Q->moll = pj_moll(Q->moll))) + E_ERROR_0; + + P->fwd = s_forward; + P->inv = s_inverse; + + return P; +} + + +#ifdef PJ_OMIT_SELFTEST +int pj_goode_selftest (void) {return 0;} +#else + +int pj_goode_selftest (void) { + double tolerance_lp = 1e-10; + double tolerance_xy = 1e-7; + + char s_args[] = {"+proj=goode +a=6400000 +lat_1=0.5 +lat_2=2"}; + + LP fwd_in[] = { + { 2, 1}, + { 2,-1}, + {-2, 1}, + {-2,-1} + }; + + XY s_fwd_expect[] = { + { 223368.11902663155, 111701.07212763709},
{ 223368.11902663155, -111701.07212763709},
{-223368.11902663155, 111701.07212763709},
{-223368.11902663155, -111701.07212763709},
}; + + XY inv_in[] = { + { 200, 100}, + { 200,-100}, + {-200, 100}, + {-200,-100} + }; + + LP s_inv_expect[] = { + { 0.0017904931100023887, 0.00089524655489191132},
{ 0.0017904931100023887, -0.00089524655489191132},
{-0.0017904931100023887, 0.00089524655489191132},
{-0.0017904931100023887, -0.00089524655489191132},
}; + + return pj_generic_selftest (0, s_args, tolerance_xy, tolerance_lp, 4, 4, fwd_in, 0, s_fwd_expect, inv_in, 0, s_inv_expect); +} + + +#endif |
