int main(int argc, char** args) {
int c;
char* wcsfn = NULL;
char* outfn = NULL;
char* infn = NULL;
sip_t sip;
double scale = 1.0;
anbool pngformat = TRUE;
char* hdpath = NULL;
anbool HD = FALSE;
cairos_t thecairos;
cairos_t* cairos = &thecairos;
cairo_surface_t* target = NULL;
cairo_t* cairot = NULL;
cairo_surface_t* surfbg = NULL;
cairo_t* cairobg = NULL;
cairo_surface_t* surfshapes = NULL;
cairo_t* cairoshapes = NULL;
cairo_surface_t* surfshapesmask = NULL;
cairo_t* cairoshapesmask = NULL;
cairo_surface_t* surffg = NULL;
cairo_t* cairo = NULL;
double lw = 2.0;
// circle linewidth.
double cw = 2.0;
double ngc_fraction = 0.02;
// NGC linewidth
double nw = 2.0;
// leave a gap short of connecting the points.
double endgap = 5.0;
// circle radius.
double crad = endgap;
double fontsize = 14.0;
double label_offset = 15.0;
int W = 0, H = 0;
unsigned char* img = NULL;
anbool NGC = FALSE, constell = FALSE;
anbool bright = FALSE;
anbool common_only = FALSE;
anbool print_common_only = FALSE;
int Nbright = 0;
double ra, dec, px, py;
int i, N;
anbool justlist = FALSE;
anbool only_messier = FALSE;
anbool grid = FALSE;
double gridspacing = 0.0;
double gridcolor[3] = { 0.2, 0.2, 0.2 };
int loglvl = LOG_MSG;
char halign = 'L';
char valign = 'C';
sl* json = NULL;
anbool whitetext = FALSE;
while ((c = getopt(argc, args, OPTIONS)) != -1) {
switch (c) {
case 'V':
valign = optarg[0];
break;
case 'O':
halign = optarg[0];
break;
case 'F':
ngc_fraction = atof(optarg);
break;
case 'h':
print_help(args[0]);
exit(0);
case 'J':
json = sl_new(4);
break;
case 'G':
gridspacing = atof(optarg);
break;
case 'g':
{
char *tail = NULL;
gridcolor[0] = strtod(optarg,&tail);
if (*tail) { tail++; gridcolor[1] = strtod(tail,&tail); }
if (*tail) { tail++; gridcolor[2] = strtod(tail,&tail); }
}
break;
case 'D':
HD = TRUE;
break;
case 'd':
hdpath = optarg;
break;
case 'M':
only_messier = TRUE;
break;
case 'n':
nw = atof(optarg);
break;
case 'f':
fontsize = atof(optarg);
break;
case 'L':
justlist = TRUE;
outfn = NULL;
break;
case 'x':
whitetext = TRUE;
break;
case 'v':
loglvl++;
break;
break;
case 'j':
print_common_only = TRUE;
break;
case 'c':
common_only = TRUE;
break;
case 'b':
Nbright = atoi(optarg);
break;
case 'B':
bright = TRUE;
break;
case 'N':
NGC = TRUE;
break;
case 'C':
constell = TRUE;
break;
case 'p':
pngformat = FALSE;
break;
case 's':
scale = atof(optarg);
break;
case 'o':
outfn = optarg;
break;
case 'i':
infn = optarg;
break;
case 'w':
wcsfn = optarg;
break;
case 'W':
W = atoi(optarg);
break;
case 'H':
H = atoi(optarg);
break;
}
}
log_init(loglvl);
log_to(stderr);
fits_use_error_system();
if (optind != argc) {
print_help(args[0]);
exit(-1);
}
if (!(outfn || justlist) || !wcsfn) {
logerr("Need (-o or -L) and -w args.\n");
print_help(args[0]);
exit(-1);
}
// read WCS.
logverb("Trying to parse SIP/TAN header from %s...\n", wcsfn);
if (!file_exists(wcsfn)) {
ERROR("No such file: \"%s\"", wcsfn);
exit(-1);
}
if (sip_read_header_file(wcsfn, &sip)) {
logverb("Got SIP header.\n");
} else {
ERROR("Failed to parse SIP/TAN header from %s", wcsfn);
exit(-1);
}
if (!(NGC || constell || bright || HD || grid)) {
logerr("Neither constellations, bright stars, HD nor NGC/IC overlays selected!\n");
print_help(args[0]);
exit(-1);
}
if (gridspacing > 0.0)
grid = TRUE;
// adjust for scaling...
lw /= scale;
cw /= scale;
nw /= scale;
crad /= scale;
endgap /= scale;
fontsize /= scale;
label_offset /= scale;
if (!W || !H) {
W = sip.wcstan.imagew;
H = sip.wcstan.imageh;
}
if (!(infn || (W && H))) {
logerr("Image width/height unspecified, and no input image given.\n");
exit(-1);
}
if (infn) {
cairoutils_fake_ppm_init();
img = cairoutils_read_ppm(infn, &W, &H);
if (!img) {
ERROR("Failed to read input image %s", infn);
exit(-1);
}
cairoutils_rgba_to_argb32(img, W, H);
} else if (!justlist) {
// Allocate a black image.
img = calloc(4 * W * H, 1);
if (!img) {
SYSERROR("Failed to allocate a blank image on which to plot!");
exit(-1);
}
}
if (HD && !hdpath) {
logerr("If you specify -D (plot Henry Draper objs), you also have to give -d (path to Henry Draper catalog)\n");
exit(-1);
}
if (!justlist) {
/*
Cairo layers:
-background: surfbg / cairobg
--> gets drawn first, in black, masked by surfshapesmask
-shapes: surfshapes / cairoshapes
--> gets drawn second, masked by surfshapesmask
-foreground/text: surffg / cairo
--> gets drawn last.
*/
surffg = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, W, H);
cairo = cairo_create(surffg);
cairo_set_line_join(cairo, CAIRO_LINE_JOIN_BEVEL);
cairo_set_antialias(cairo, CAIRO_ANTIALIAS_GRAY);
cairo_set_source_rgba(cairo, 1.0, 1.0, 1.0, 1.0);
cairo_scale(cairo, scale, scale);
//cairo_select_font_face(cairo, "helvetica", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_select_font_face(cairo, "DejaVu Sans Mono Book", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size(cairo, fontsize);
surfshapes = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, W, H);
cairoshapes = cairo_create(surfshapes);
cairo_set_line_join(cairoshapes, CAIRO_LINE_JOIN_BEVEL);
cairo_set_antialias(cairoshapes, CAIRO_ANTIALIAS_GRAY);
cairo_set_source_rgba(cairoshapes, 1.0, 1.0, 1.0, 1.0);
cairo_scale(cairoshapes, scale, scale);
cairo_select_font_face(cairoshapes, "DejaVu Sans Mono Book", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size(cairoshapes, fontsize);
surfshapesmask = cairo_image_surface_create(CAIRO_FORMAT_A8, W, H);
cairoshapesmask = cairo_create(surfshapesmask);
cairo_set_line_join(cairoshapesmask, CAIRO_LINE_JOIN_BEVEL);
cairo_set_antialias(cairoshapesmask, CAIRO_ANTIALIAS_GRAY);
cairo_set_source_rgba(cairoshapesmask, 1.0, 1.0, 1.0, 1.0);
cairo_scale(cairoshapesmask, scale, scale);
cairo_select_font_face(cairoshapesmask, "DejaVu Sans Mono Book", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size(cairoshapesmask, fontsize);
cairo_paint(cairoshapesmask);
cairo_stroke(cairoshapesmask);
surfbg = cairo_image_surface_create(CAIRO_FORMAT_A8, W, H);
cairobg = cairo_create(surfbg);
cairo_set_line_join(cairobg, CAIRO_LINE_JOIN_BEVEL);
cairo_set_antialias(cairobg, CAIRO_ANTIALIAS_GRAY);
cairo_set_source_rgba(cairobg, 0, 0, 0, 1);
cairo_scale(cairobg, scale, scale);
cairo_select_font_face(cairobg, "DejaVu Sans Mono Book", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size(cairobg, fontsize);
cairos->bg = cairobg;
cairos->fg = cairo;
cairos->shapes = cairoshapes;
cairos->shapesmask = cairoshapesmask;
cairos->imgW = (float)W/scale;
cairos->imgH = (float)H/scale;
// }
if (grid) {
double ramin, ramax, decmin, decmax;
double ra, dec;
double rastep = gridspacing / 60.0;
double decstep = gridspacing / 60.0;
// how many line segments
int N = 10;
double px, py;
int i;
cairo_set_source_rgba(cairo, gridcolor[0], gridcolor[1], gridcolor[2], 1.0);
sip_get_radec_bounds(&sip, 100, &ramin, &ramax, &decmin, &decmax);
logverb("Plotting grid lines from RA=%g to %g in steps of %g; Dec=%g to %g in steps of %g\n",
ramin, ramax, rastep, decmin, decmax, decstep);
for (dec = decstep * floor(decmin / decstep); dec<=decmax; dec+=decstep) {
logverb(" dec=%g\n", dec);
for (i=0; i<=N; i++) {
ra = ramin + ((double)i / (double)N) * (ramax - ramin);
if (!sip_radec2pixelxy(&sip, ra, dec, &px, &py))
continue;
// first time, move_to; else line_to
((ra == ramin) ? cairo_move_to : cairo_line_to)(cairo, px, py);
}
cairo_stroke(cairo);
}
for (ra = rastep * floor(ramin / rastep); ra <= ramax; ra += rastep) {
//for (dec=decmin; dec<=decmax; dec += (decmax - decmin)/(double)N) {
logverb(" ra=%g\n", ra);
for (i=0; i<=N; i++) {
dec = decmin + ((double)i / (double)N) * (decmax - decmin);
if (!sip_radec2pixelxy(&sip, ra, dec, &px, &py))
continue;
// first time, move_to; else line_to
((dec == decmin) ? cairo_move_to : cairo_line_to)(cairo, px, py);
}
cairo_stroke(cairo);
}
cairo_set_source_rgba(cairo, 1.0, 1.0, 1.0, 1.0);
}
}
if (constell) {
N = constellations_n();
logverb("Checking %i constellations.\n", N);
for (c=0; c<N; c++) {
const char* shortname = NULL;
const char* longname;
il* lines;
il* uniqstars;
il* inboundstars;
float r,g,b;
int Ninbounds;
int Nunique;
cairo_text_extents_t textents;
double cmass[3];
uniqstars = constellations_get_unique_stars(c);
inboundstars = il_new(16);
Nunique = il_size(uniqstars);
debug("%s: %zu unique stars.\n", shortname, il_size(uniqstars));
// Count the number of unique stars belonging to this contellation
// that are within the image bounds
Ninbounds = 0;
for (i=0; i<il_size(uniqstars); i++) {
int star;
star = il_get(uniqstars, i);
constellations_get_star_radec(star, &ra, &dec);
debug("star %i: ra,dec (%g,%g)\n", il_get(uniqstars, i), ra, dec);
if (!sip_radec2pixelxy(&sip, ra, dec, &px, &py))
continue;
if (px < 0 || py < 0 || px*scale > W || py*scale > H)
continue;
Ninbounds++;
il_append(inboundstars, star);
}
il_free(uniqstars);
debug("%i are in-bounds.\n", Ninbounds);
// Only draw this constellation if at least 2 of its stars
// are within the image bounds.
if (Ninbounds < 2) {
il_free(inboundstars);
continue;
}
// Set the color based on the location of the first in-bounds star.
// This is a hack -- we have two different constellation
// definitions with different numbering schemes!
if (!justlist && (il_size(inboundstars) > 0)) {
// This is helpful for videos: ensuring that the same
// color is chosen for a constellation in each frame.
int star = il_get(inboundstars, 0);
constellations_get_star_radec(star, &ra, &dec);
if (whitetext) {
r = g = b = 1;
} else {
color_for_radec(ra, dec, &r, &g, &b);
}
cairo_set_source_rgba(cairoshapes, r,g,b,0.8);
cairo_set_line_width(cairoshapes, cw);
cairo_set_source_rgba(cairo, r,g,b,0.8);
cairo_set_line_width(cairo, cw);
}
// Draw circles around each star.
// Find center of mass (of the in-bounds stars)
cmass[0] = cmass[1] = cmass[2] = 0.0;
for (i=0; i<il_size(inboundstars); i++) {
double xyz[3];
int star = il_get(inboundstars, i);
constellations_get_star_radec(star, &ra, &dec);
if (!sip_radec2pixelxy(&sip, ra, dec, &px, &py))
continue;
if (px < 0 || py < 0 || px*scale > W || py*scale > H)
continue;
if (!justlist) {
cairo_arc(cairobg, px, py, crad+1.0, 0.0, 2.0*M_PI);
cairo_stroke(cairobg);
cairo_arc(cairoshapes, px, py, crad, 0.0, 2.0*M_PI);
cairo_stroke(cairoshapes);
}
radecdeg2xyzarr(ra, dec, xyz);
cmass[0] += xyz[0];
cmass[1] += xyz[1];
cmass[2] += xyz[2];
}
cmass[0] /= il_size(inboundstars);
cmass[1] /= il_size(inboundstars);
cmass[2] /= il_size(inboundstars);
xyzarr2radecdeg(cmass, &ra, &dec);
il_free(inboundstars);
if (!sip_radec2pixelxy(&sip, ra, dec, &px, &py))
continue;
shortname = constellations_get_shortname(c);
longname = constellations_get_longname(c);
assert(shortname && longname);
logverb("%s at (%g, %g)\n", longname, px, py);
if (Ninbounds == Nunique) {
printf("The constellation %s (%s)\n", longname, shortname);
} else {
printf("Part of the constellation %s (%s)\n", longname, shortname);
}
if (justlist)
continue;
// If the label will be off-screen, move it back on.
cairo_text_extents(cairo, shortname, &textents);
if (px < 0)
px = 0;
if (py < textents.height)
py = textents.height;
if ((px + textents.width)*scale > W)
px = W/scale - textents.width;
if ((py+textents.height)*scale > H)
py = H/scale - textents.height;
logverb("%s at (%g, %g)\n", shortname, px, py);
add_text(cairos, longname, px, py, halign, valign);
// Draw the lines.
cairo_set_line_width(cairo, lw);
lines = constellations_get_lines(c);
for (i=0; i<il_size(lines)/2; i++) {
int star1, star2;
double ra1, dec1, ra2, dec2;
double px1, px2, py1, py2;
double dx, dy;
double dist;
double gapfrac;
star1 = il_get(lines, i*2+0);
star2 = il_get(lines, i*2+1);
constellations_get_star_radec(star1, &ra1, &dec1);
constellations_get_star_radec(star2, &ra2, &dec2);
if (!sip_radec2pixelxy(&sip, ra1, dec1, &px1, &py1) ||
!sip_radec2pixelxy(&sip, ra2, dec2, &px2, &py2))
continue;
dx = px2 - px1;
dy = py2 - py1;
dist = hypot(dx, dy);
gapfrac = endgap / dist;
cairo_move_to(cairoshapes, px1 + dx*gapfrac, py1 + dy*gapfrac);
cairo_line_to(cairoshapes, px1 + dx*(1.0-gapfrac), py1 + dy*(1.0-gapfrac));
cairo_stroke(cairoshapes);
}
il_free(lines);
}
logverb("done constellations.\n");
}
if (bright) {
double dy = 0;
cairo_font_extents_t extents;
pl* brightstars = pl_new(16);
if (!justlist) {
cairo_set_source_rgba(cairoshapes, 0.75, 0.75, 0.75, 0.8);
cairo_font_extents(cairo, &extents);
dy = extents.ascent * 0.5;
cairo_set_line_width(cairoshapes, cw);
}
N = bright_stars_n();
logverb("Checking %i bright stars.\n", N);
for (i=0; i<N; i++) {
const brightstar_t* bs = bright_stars_get(i);
if (!sip_radec2pixelxy(&sip, bs->ra, bs->dec, &px, &py))
continue;
if (px < 0 || py < 0 || px*scale > W || py*scale > H)
continue;
if (!(bs->name && strlen(bs->name)))
continue;
if (common_only && !(bs->common_name && strlen(bs->common_name)))
continue;
if (strcmp(bs->common_name, "Maia") == 0)
continue;
pl_append(brightstars, bs);
}
// keep only the Nbright brightest?
if (Nbright && (pl_size(brightstars) > Nbright)) {
pl_sort(brightstars, sort_by_mag);
pl_remove_index_range(brightstars, Nbright, pl_size(brightstars)-Nbright);
}
for (i=0; i<pl_size(brightstars); i++) {
char* text;
const brightstar_t* bs = pl_get(brightstars, i);
if (!sip_radec2pixelxy(&sip, bs->ra, bs->dec, &px, &py))
continue;
if (bs->common_name && strlen(bs->common_name))
if (print_common_only || common_only)
text = strdup(bs->common_name);
else
asprintf_safe(&text, "%s (%s)", bs->common_name, bs->name);
else
text = strdup(bs->name);
logverb("%s at (%g, %g)\n", text, px, py);
if (json) {
sl* names = sl_new(4);
char* namearr;
if (bs->common_name && strlen(bs->common_name))
sl_append(names, bs->common_name);
if (bs->name)
sl_append(names, bs->name);
namearr = sl_join(names, "\", \"");
sl_appendf(json,
"{ \"type\" : \"star\", "
" \"pixelx\": %g, "
" \"pixely\": %g, "
" \"name\" : \"%s\", "
" \"names\" : [ \"%s\" ] } "
, px, py,
(bs->common_name && strlen(bs->common_name)) ? bs->common_name : bs->name,
namearr);
free(namearr);
sl_free2(names);
}
if (bs->common_name && strlen(bs->common_name))
printf("The star %s (%s)\n", bs->common_name, bs->name);
else
printf("The star %s\n", bs->name);
if (!justlist) {
float r,g,b;
// set color based on RA,Dec to match constellations above.
if (whitetext) {
r = g = b = 1;
} else {
color_for_radec(bs->ra, bs->dec, &r, &g, &b);
}
cairo_set_source_rgba(cairoshapes, r,g,b,0.8);
cairo_set_source_rgba(cairo, r,g,b, 0.8);
}
if (!justlist)
add_text(cairos, text, px + label_offset, py + dy,
halign, valign);
free(text);
if (!justlist) {
// plot a black circle behind the light circle...
cairo_arc(cairobg, px, py, crad+1.0, 0.0, 2.0*M_PI);
cairo_stroke(cairobg);
cairo_arc(cairoshapes, px, py, crad, 0.0, 2.0*M_PI);
cairo_stroke(cairoshapes);
}
}
pl_free(brightstars);
}
if (NGC) {
double imscale;
double imsize;
double dy = 0;
cairo_font_extents_t extents;
if (!justlist) {
cairo_set_source_rgb(cairoshapes, 1.0, 1.0, 1.0);
cairo_set_source_rgb(cairo, 1.0, 1.0, 1.0);
cairo_set_line_width(cairo, nw);
cairo_font_extents(cairo, &extents);
dy = extents.ascent * 0.5;
}
// arcsec/pixel
imscale = sip_pixel_scale(&sip);
// arcmin
imsize = imscale * (imin(W, H) / scale) / 60.0;
N = ngc_num_entries();
logverb("Checking %i NGC/IC objects.\n", N);
for (i=0; i<N; i++) {
ngc_entry* ngc = ngc_get_entry(i);
sl* str;
sl* names;
double pixsize;
float ara, adec;
char* text;
if (!ngc)
break;
if (ngc->size < imsize * ngc_fraction)
continue;
if (ngcic_accurate_get_radec(ngc->is_ngc, ngc->id, &ara, &adec) == 0) {
ngc->ra = ara;
ngc->dec = adec;
}
if (!sip_radec2pixelxy(&sip, ngc->ra, ngc->dec, &px, &py))
continue;
if (px < 0 || py < 0 || px*scale > W || py*scale > H)
continue;
str = sl_new(4);
//sl_appendf(str, "%s %i", (ngc->is_ngc ? "NGC" : "IC"), ngc->id);
names = ngc_get_names(ngc, NULL);
if (names) {
int n;
for (n=0; n<sl_size(names); n++) {
if (only_messier && strncmp(sl_get(names, n), "M ", 2))
continue;
sl_append(str, sl_get(names, n));
}
}
sl_free2(names);
text = sl_implode(str, " / ");
printf("%s\n", text);
pixsize = ngc->size * 60.0 / imscale;
if (!justlist) {
// black circle behind the white one...
cairo_arc(cairobg, px, py, pixsize/2.0+1.0, 0.0, 2.0*M_PI);
cairo_stroke(cairobg);
cairo_move_to(cairoshapes, px + pixsize/2.0, py);
cairo_arc(cairoshapes, px, py, pixsize/2.0, 0.0, 2.0*M_PI);
debug("size: %f arcsec, pixsize: %f pixels\n", ngc->size, pixsize);
cairo_stroke(cairoshapes);
add_text(cairos, text, px + label_offset, py + dy,
halign, valign);
}
if (json) {
char* namelist = sl_implode(str, "\", \"");
sl_appendf(json,
"{ \"type\" : \"ngc\", "
" \"names\" : [ \"%s\" ], "
" \"pixelx\" : %g, "
" \"pixely\" : %g, "
" \"radius\" : %g }"
, namelist, px, py, pixsize/2.0);
free(namelist);
}
free(text);
sl_free2(str);
}
}
if (HD) {
double rac, decc, ra2, dec2;
double arcsec;
hd_catalog_t* hdcat;
bl* hdlist;
int i;
if (!justlist)
cairo_set_source_rgb(cairo, 1.0, 1.0, 1.0);
logverb("Reading HD catalog: %s\n", hdpath);
hdcat = henry_draper_open(hdpath);
if (!hdcat) {
ERROR("Failed to open HD catalog");
exit(-1);
}
logverb("Got %i HD stars\n", henry_draper_n(hdcat));
sip_pixelxy2radec(&sip, W/(2.0*scale), H/(2.0*scale), &rac, &decc);
sip_pixelxy2radec(&sip, 0.0, 0.0, &ra2, &dec2);
arcsec = arcsec_between_radecdeg(rac, decc, ra2, dec2);
// Fudge
arcsec *= 1.1;
hdlist = henry_draper_get(hdcat, rac, decc, arcsec);
logverb("Found %zu HD stars within range (%g arcsec of RA,Dec %g,%g)\n", bl_size(hdlist), arcsec, rac, decc);
for (i=0; i<bl_size(hdlist); i++) {
double px, py;
char* txt;
hd_entry_t* hd = bl_access(hdlist, i);
if (!sip_radec2pixelxy(&sip, hd->ra, hd->dec, &px, &py)) {
continue;
}
if (px < 0 || py < 0 || px*scale > W || py*scale > H) {
logverb(" HD %i at RA,Dec (%g, %g) -> pixel (%.1f, %.1f) is out of bounds\n",
hd->hd, hd->ra, hd->dec, px, py);
continue;
}
asprintf_safe(&txt, "HD %i", hd->hd);
if (!justlist) {
cairo_text_extents_t textents;
cairo_text_extents(cairo, txt, &textents);
cairo_arc(cairobg, px, py, crad+1.0, 0.0, 2.0*M_PI);
cairo_stroke(cairobg);
cairo_arc(cairoshapes, px, py, crad, 0.0, 2.0*M_PI);
cairo_stroke(cairoshapes);
px -= (textents.width * 0.5);
py -= (crad + 4.0);
add_text(cairos, txt, px, py, halign, valign);
}
if (json)
sl_appendf(json,
"{ \"type\" : \"hd\","
" \"pixelx\": %g, "
" \"pixely\": %g, "
" \"name\" : \"HD %i\" }"
, px, py, hd->hd);
printf("%s\n", txt);
free(txt);
}
bl_free(hdlist);
henry_draper_close(hdcat);
}
if (json) {
FILE* fout = stderr;
char* annstr = sl_implode(json, ",\n");
fprintf(fout, "{ \n");
fprintf(fout, " \"status\": \"solved\",\n");
fprintf(fout, " \"git-revision\": %s,\n", AN_GIT_REVISION);
fprintf(fout, " \"git-date\": \"%s\",\n", AN_GIT_DATE);
fprintf(fout, " \"annotations\": [\n%s\n]\n", annstr);
fprintf(fout, "}\n");
free(annstr);
}
sl_free2(json);
json = NULL;
if (justlist)
return 0;
target = cairo_image_surface_create_for_data(img, CAIRO_FORMAT_ARGB32, W, H, W*4);
cairot = cairo_create(target);
cairo_set_source_rgba(cairot, 0, 0, 0, 1);
// Here's where you set the background surface's properties...
cairo_set_source_surface(cairot, surfbg, 0, 0);
cairo_mask_surface(cairot, surfshapesmask, 0, 0);
cairo_stroke(cairot);
// Add on the shapes.
cairo_set_source_surface(cairot, surfshapes, 0, 0);
//cairo_mask_surface(cairot, surfshapes, 0, 0);
cairo_mask_surface(cairot, surfshapesmask, 0, 0);
cairo_stroke(cairot);
// Add on the foreground.
cairo_set_source_surface(cairot, surffg, 0, 0);
cairo_mask_surface(cairot, surffg, 0, 0);
cairo_stroke(cairot);
// Convert image for output...
cairoutils_argb32_to_rgba(img, W, H);
if (pngformat) {
if (cairoutils_write_png(outfn, img, W, H)) {
ERROR("Failed to write PNG");
exit(-1);
}
} else {
if (cairoutils_write_ppm(outfn, img, W, H)) {
ERROR("Failed to write PPM");
exit(-1);
}
}
cairo_surface_destroy(target);
cairo_surface_destroy(surfshapesmask);
cairo_surface_destroy(surffg);
cairo_surface_destroy(surfbg);
cairo_surface_destroy(surfshapes);
cairo_destroy(cairo);
cairo_destroy(cairot);
cairo_destroy(cairobg);
cairo_destroy(cairoshapes);
cairo_destroy(cairoshapesmask);
free(img);
return 0;
}
double deg_between_radecdeg(double ra1, double dec1, double ra2, double dec2) {
return arcsec2deg(arcsec_between_radecdeg(ra1, dec1, ra2, dec2));
}