1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
#define PJ_LIB__
#include <errno.h>
#include <math.h>
#include "proj.h"
#include "proj_internal.h"
PROJ_HEAD(urmfps, "Urmaev Flat-Polar Sinusoidal") "\n\tPCyl, Sph\n\tn=";
PROJ_HEAD(wag1, "Wagner I (Kavraisky VI)") "\n\tPCyl, Sph";
namespace { // anonymous namespace
struct pj_opaque {
double n, C_y;
};
} // anonymous namespace
#define C_x 0.8773826753
#define Cy 1.139753528477
static PJ_XY urmfps_s_forward (PJ_LP lp, PJ *P) { /* Spheroidal, forward */
PJ_XY xy = {0.0, 0.0};
lp.phi = aasin (P->ctx,static_cast<struct pj_opaque*>(P->opaque)->n * sin (lp.phi));
xy.x = C_x * lp.lam * cos (lp.phi);
xy.y = static_cast<struct pj_opaque*>(P->opaque)->C_y * lp.phi;
return xy;
}
static PJ_LP urmfps_s_inverse (PJ_XY xy, PJ *P) { /* Spheroidal, inverse */
PJ_LP lp = {0.0, 0.0};
xy.y /= static_cast<struct pj_opaque*>(P->opaque)->C_y;
lp.phi = aasin(P->ctx, sin (xy.y) / static_cast<struct pj_opaque*>(P->opaque)->n);
lp.lam = xy.x / (C_x * cos (xy.y));
return lp;
}
static PJ *setup(PJ *P) {
static_cast<struct pj_opaque*>(P->opaque)->C_y = Cy / static_cast<struct pj_opaque*>(P->opaque)->n;
P->es = 0.;
P->inv = urmfps_s_inverse;
P->fwd = urmfps_s_forward;
return P;
}
PJ *PROJECTION(urmfps) {
struct pj_opaque *Q = static_cast<struct pj_opaque*>(calloc (1, sizeof (struct pj_opaque)));
if (nullptr==Q)
return pj_default_destructor(P, PROJ_ERR_INVALID_OP /*ENOMEM*/);
P->opaque = Q;
if (!pj_param(P->ctx, P->params, "tn").i )
{
proj_log_error(P, _("Missing parameter n."));
return pj_default_destructor(P, PROJ_ERR_INVALID_OP_MISSING_ARG);
}
Q->n = pj_param(P->ctx, P->params, "dn").f;
if (Q->n <= 0. || Q->n > 1.)
{
proj_log_error(P, _("Invalid value for n: it should be in ]0,1] range."));
return pj_default_destructor(P, PROJ_ERR_INVALID_OP_ILLEGAL_ARG_VALUE);
}
return setup(P);
}
PJ *PROJECTION(wag1) {
struct pj_opaque *Q = static_cast<struct pj_opaque*>(calloc (1, sizeof (struct pj_opaque)));
if (nullptr==Q)
return pj_default_destructor(P, PROJ_ERR_INVALID_OP /*ENOMEM*/);
P->opaque = Q;
static_cast<struct pj_opaque*>(P->opaque)->n = 0.8660254037844386467637231707;
return setup(P);
}
|
