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[] = { HUGE_VAL, HUGE_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] == HUGE_VAL)
crpix[0] = W/2.0;
if (crpix[1] == HUGE_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);
}
/*
blind_wcs_move_tangent_point(xyz, xy, N, crpix, &tan, &tan2);
blind_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;
}
int main(int argc, char** args) {
int loglvl = LOG_MSG;
char** myargs;
int nargs;
int c;
char* wcsinfn = NULL;
char* wcsoutfn = NULL;
int ext = 0;
anbool scamp = FALSE;
double xlo = 1;
double xhi = 1000;
double xstep = 0;
double ylo = 1;
double yhi = 1000;
double ystep = 0;
anbool forcetan = FALSE;
dl* xylst;
double x,y;
double* xy;
int Nxy;
int W, H;
W = H = 0;
while ((c = getopt(argc, args, OPTIONS)) != -1) {
switch (c) {
case 't':
forcetan = TRUE;
break;
case 'W':
W = atoi(optarg);
break;
case 'H':
H = atoi(optarg);
break;
case 'x':
xlo = atof(optarg);
break;
case 'X':
xhi = atof(optarg);
break;
case 'a':
xstep = atof(optarg);
break;
case 'y':
ylo = atof(optarg);
break;
case 'Y':
yhi = atof(optarg);
break;
case 'b':
ystep = atof(optarg);
break;
case 's':
scamp = TRUE;
break;
case 'e':
ext = atoi(optarg);
break;
case 'v':
loglvl++;
break;
case '?':
case 'h':
print_help(args[0]);
exit(0);
}
}
nargs = argc - optind;
myargs = args + optind;
if (nargs != 2) {
print_help(args[0]);
exit(-1);
}
wcsinfn = myargs[0];
wcsoutfn = myargs[1];
log_init(loglvl);
fits_use_error_system();
logmsg("Reading WCS (with PV distortions) from %s, ext %i\n", wcsinfn, ext);
logmsg("Writing WCS (with SIP distortions) to %s\n", wcsoutfn);
assert(xhi >= xlo);
assert(yhi >= ylo);
if (xstep == 0) {
int nsteps = MAX(1, round((xhi - xlo)/100.0));
xstep = (xhi - xlo) / (double)nsteps;
}
if (ystep == 0) {
int nsteps = MAX(1, round((yhi - ylo)/100.0));
ystep = (yhi - ylo) / (double)nsteps;
}
logverb("Stepping from x = %g to %g, steps of %g\n", xlo, xhi, xstep);
logverb("Stepping from y = %g to %g, steps of %g\n", ylo, yhi, ystep);
xylst = dl_new(256);
for (y=ylo; y<=(yhi+0.001); y+=ystep) {
for (x=xlo; x<=(xhi+0.001); x+=xstep) {
dl_append(xylst, x);
dl_append(xylst, y);
}
}
Nxy = dl_size(xylst)/2;
xy = dl_to_array(xylst);
dl_free(xylst);
if (wcs_pv2sip(wcsinfn, ext, wcsoutfn, scamp, xy, Nxy, W, H,
forcetan)) {
exit(-1);
}
free(xy);
return 0;
}
