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#define PJ_LIB__
#include <projects.h>
PROJ_HEAD(urmfps, "Urmaev Flat-Polar Sinusoidal") "\n\tPCyl, Sph.\n\tn=";
PROJ_HEAD(wag1, "Wagner I (Kavraisky VI)") "\n\tPCyl, Sph.";
struct pj_opaque {
double n, C_y;
};
#define C_x 0.8773826753
#define Cy 1.139753528477
static XY s_forward (LP lp, PJ *P) { /* Spheroidal, forward */
XY xy = {0.0, 0.0};
lp.phi = aasin (P->ctx,P->opaque->n * sin (lp.phi));
xy.x = C_x * lp.lam * cos (lp.phi);
xy.y = P->opaque->C_y * lp.phi;
return xy;
}
static LP s_inverse (XY xy, PJ *P) { /* Spheroidal, inverse */
LP lp = {0.0, 0.0};
xy.y /= P->opaque->C_y;
lp.phi = aasin(P->ctx, sin (xy.y) / P->opaque->n);
lp.lam = xy.x / (C_x * cos (xy.y));
return lp;
}
static void *freeup_new (PJ *P) { /* Destructor */
if (0==P)
return 0;
if (0==P->opaque)
return pj_dealloc (P);
pj_dealloc (P->opaque);
return pj_dealloc(P);
}
static void freeup (PJ *P) {
freeup_new (P);
return;
}
static PJ *setup(PJ *P) {
P->opaque->C_y = Cy / P->opaque->n;
P->es = 0.;
P->inv = s_inverse;
P->fwd = s_forward;
return P;
}
PJ *PROJECTION(urmfps) {
struct pj_opaque *Q = pj_calloc (1, sizeof (struct pj_opaque));
if (0==Q)
return freeup_new (P);
P->opaque = Q;
if (pj_param(P->ctx, P->params, "tn").i) {
P->opaque->n = pj_param(P->ctx, P->params, "dn").f;
if (P->opaque->n <= 0. || P->opaque->n > 1.)
E_ERROR(-40)
} else
E_ERROR(-40)
return setup(P);
}
PJ *PROJECTION(wag1) {
struct pj_opaque *Q = pj_calloc (1, sizeof (struct pj_opaque));
if (0==Q)
return freeup_new (P);
P->opaque = Q;
P->opaque->n = 0.8660254037844386467637231707;
return setup(P);
}
#ifndef PJ_SELFTEST
int pj_urmfps_selftest (void) {return 0;}
#else
int pj_urmfps_selftest (void) {
double tolerance_lp = 1e-10;
double tolerance_xy = 1e-7;
char s_args[] = {"+proj=urmfps +a=6400000 +lat_1=0.5 +lat_2=2 +n=0.5"};
LP fwd_in[] = {
{ 2, 1},
{ 2,-1},
{-2, 1},
{-2,-1}
};
XY s_fwd_expect[] = {
{ 196001.70813419219, 127306.84332999329},
{ 196001.70813419219, -127306.84332999329},
{-196001.70813419219, 127306.84332999329},
{-196001.70813419219, -127306.84332999329},
};
XY inv_in[] = {
{ 200, 100},
{ 200,-100},
{-200, 100},
{-200,-100}
};
LP s_inv_expect[] = {
{ 0.002040720839642371, 0.00078547381740438178},
{ 0.002040720839642371, -0.00078547381740438178},
{-0.002040720839642371, 0.00078547381740438178},
{-0.002040720839642371, -0.00078547381740438178},
};
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
#ifndef PJ_SELFTEST
int pj_wag1_selftest (void) {return 0;}
#else
int pj_wag1_selftest (void) {
double tolerance_lp = 1e-10;
double tolerance_xy = 1e-7;
char s_args[] = {"+proj=wag1 +a=6400000 +lat_1=0.5 +lat_2=2 +n=0.5"};
LP fwd_in[] = {
{ 2, 1},
{ 2,-1},
{-2, 1},
{-2,-1}
};
XY s_fwd_expect[] = {
{ 195986.78156115755, 127310.07506065986},
{ 195986.78156115755, -127310.07506065986},
{-195986.78156115755, 127310.07506065986},
{-195986.78156115755, -127310.07506065986},
};
XY inv_in[] = {
{ 200, 100},
{ 200,-100},
{-200, 100},
{-200,-100}
};
LP s_inv_expect[] = {
{ 0.002040720839738254, 0.00078547381739207999},
{ 0.002040720839738254, -0.00078547381739207999},
{-0.002040720839738254, 0.00078547381739207999},
{-0.002040720839738254, -0.00078547381739207999},
};
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
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