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#define PJ_LIB__
#include <projects.h>
PROJ_HEAD(denoy, "Denoyer Semi-Elliptical") "\n\tPCyl., no inv., Sph.";
#define C0 0.95
#define C1 -0.08333333333333333333
#define C3 0.00166666666666666666
#define D1 0.9
#define D5 0.03
static XY s_forward (LP lp, PJ *P) { /* Spheroidal, forward */
XY xy = {0.0, 0.0};
(void) P;
xy.y = lp.phi;
xy.x = lp.lam;
lp.lam = fabs(lp.lam);
xy.x *= cos((C0 + lp.lam * (C1 + lp.lam * lp.lam * C3)) *
(lp.phi * (D1 + D5 * lp.phi * lp.phi * lp.phi * lp.phi)));
return xy;
}
static void *freeup_new (PJ *P) { /* Destructor */
return pj_dealloc(P);
}
static void freeup (PJ *P) {
freeup_new (P);
return;
}
PJ *PROJECTION(denoy) {
P->es = 0.0;
P->fwd = s_forward;
return P;
}
#ifndef PJ_SELFTEST
int pj_denoy_selftest (void) {return 0;}
#else
int pj_denoy_selftest (void) {
double tolerance_xy = 1e-7;
char s_args[] = {"+proj=denoy +a=6400000 +lat_1=0.5 +lat_2=2"};
LP fwd_in[] = {
{ 2, 1},
{ 2,-1},
{-2, 1},
{-2,-1}
};
XY s_fwd_expect[] = {
{ 223377.422876954137, 111701.07212763709},
{ 223377.422876954137, -111701.07212763709},
{-223377.422876954137, 111701.07212763709},
{-223377.422876954137, -111701.07212763709},
};
return pj_generic_selftest (0, s_args, tolerance_xy, 0, 4, 4, fwd_in, 0, s_fwd_expect, 0, 0, 0);
}
#endif
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