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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
# This file is part of the Astrometry.net suite.
# Licensed under a 3-clause BSD style license - see LICENSE
*/
#include <stdio.h>
#include "os-features.h"
#include "bl.h"
#include "fit-wcs.h"
#include "sip.h"
#include "sip_qfits.h"
#include "log.h"
#include "errors.h"
#include "tweak.h"
#include "mathutil.h"
static const char* OPTIONS = "hW:H:X:Y:vo:";
int main(int argc, char** args) {
int c;
dl* xys = dl_new(16);
dl* radecs = dl_new(16);
dl* otherradecs = dl_new(16);
double* xy;
double* xyz;
int i, N;
tan_t tan, tan2, tan3;
int W=0, H=0;
double crpix[] = { LARGE_VAL, LARGE_VAL };
int loglvl = LOG_MSG;
FILE* logstream = stderr;
int order = 1;
while ((c = getopt(argc, args, OPTIONS)) != -1) {
switch (c) {
case 'v':
loglvl++;
break;
case 'h':
exit(0);
case 'o':
order = atoi(optarg);
break;
case 'W':
W = atoi(optarg);
break;
case 'H':
H = atoi(optarg);
break;
case 'X':
crpix[0] = atof(optarg);
break;
case 'Y':
crpix[1] = atof(optarg);
break;
}
}
if (optind != argc) {
exit(-1);
}
log_init(loglvl);
log_to(logstream);
errors_log_to(logstream);
if (W == 0 || H == 0) {
logerr("Need -W, -H\n");
exit(-1);
}
if (crpix[0] == LARGE_VAL)
crpix[0] = W/2.0;
if (crpix[1] == LARGE_VAL)
crpix[1] = H/2.0;
while (1) {
double x,y,ra,dec;
if (fscanf(stdin, "%lf %lf %lf %lf\n", &x, &y, &ra, &dec) < 4)
break;
if (x == -1 && y == -1) {
dl_append(otherradecs, ra);
dl_append(otherradecs, dec);
} else {
dl_append(xys, x);
dl_append(xys, y);
dl_append(radecs, ra);
dl_append(radecs, dec);
}
}
logmsg("Read %i x,y,ra,dec tuples\n", dl_size(xys)/2);
N = dl_size(xys)/2;
xy = dl_to_array(xys);
xyz = malloc(3 * N * sizeof(double));
for (i=0; i<N; i++)
radecdeg2xyzarr(dl_get(radecs, 2*i), dl_get(radecs, 2*i+1), xyz + i*3);
dl_free(xys);
dl_free(radecs);
fit_tan_wcs(xyz, xy, N, &tan, NULL);
tan.imagew = W;
tan.imageh = H;
logmsg("Computed TAN WCS:\n");
tan_print_to(&tan, logstream);
sip_t* sip;
{
tweak_t* t = tweak_new();
starxy_t* sxy = starxy_new(N, FALSE, FALSE);
il* imginds = il_new(256);
il* refinds = il_new(256);
for (i=0; i<N; i++) {
starxy_set_x(sxy, i, xy[2*i+0]);
starxy_set_y(sxy, i, xy[2*i+1]);
}
tweak_init(t);
tweak_push_ref_xyz(t, xyz, N);
tweak_push_image_xy(t, sxy);
for (i=0; i<N; i++) {
il_append(imginds, i);
il_append(refinds, i);
}
// unweighted; no dist2s
tweak_push_correspondence_indices(t, imginds, refinds, NULL, NULL);
tweak_push_wcs_tan(t, &tan);
t->sip->a_order = t->sip->b_order = t->sip->ap_order = t->sip->bp_order = order;
for (i=0; i<10; i++) {
// go to TWEAK_HAS_LINEAR_CD -> do_sip_tweak
// t->image has the indices of corresponding image stars
// t->ref has the indices of corresponding catalog stars
tweak_go_to(t, TWEAK_HAS_LINEAR_CD);
logmsg("\n");
sip_print(t->sip);
t->state &= ~TWEAK_HAS_LINEAR_CD;
}
tan_write_to_file(&t->sip->wcstan, "kt1.wcs");
sip = t->sip;
}
for (i=0; i<dl_size(otherradecs)/2; i++) {
double ra, dec, x,y;
ra = dl_get(otherradecs, 2*i);
dec = dl_get(otherradecs, 2*i+1);
if (!sip_radec2pixelxy(sip, ra, dec, &x, &y)) {
logerr("Not in tangent plane: %g,%g\n", ra, dec);
exit(-1);
//continue;
}
printf("%g %g\n", x, y);
}
/*
fit_tan_wcs_move_tangent_point(xyz, xy, N, crpix, &tan, &tan2);
fit_tan_wcs_move_tangent_point(xyz, xy, N, crpix, &tan2, &tan3);
logmsg("Moved tangent point to (%g,%g):\n", crpix[0], crpix[1]);
tan_print_to(&tan3, logstream);
tan_write_to_file(&tan, "kt1.wcs");
tan_write_to_file(&tan3, "kt2.wcs");
*/
dl_free(otherradecs);
free(xy);
free(xyz);
return 0;
}
|
