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/*
# This file is part of the Astrometry.net suite.
# Licensed under a 3-clause BSD style license - see LICENSE
*/
#include <string.h>
#include <math.h>
#include <assert.h>
#include "plotoutline.h"
#include "cairoutils.h"
#include "ioutils.h"
#include "log.h"
#include "errors.h"
#include "sip-utils.h"
#include "sip_qfits.h"
#include "starutil.h"
DEFINE_PLOTTER(outline);
plotoutline_t* plot_outline_get(plot_args_t* pargs) {
return plotstuff_get_config(pargs, "outline");
}
void* plot_outline_init(plot_args_t* plotargs) {
plotoutline_t* args = calloc(1, sizeof(plotoutline_t));
args->stepsize = 10;
return args;
}
static void walk_callback(const anwcs_t* wcs, double ix, double iy,
double ra, double dec, void* token) {
dl* radecs = (dl*)token;
dl_append(radecs, ra);
dl_append(radecs, dec);
}
int plot_outline_plot(const char* command,
cairo_t* cairo, plot_args_t* pargs, void* baton) {
plotoutline_t* args = (plotoutline_t*)baton;
dl* rd;
int i;
pl* lists;
assert(args->stepsize > 0);
assert(args->wcs);
assert(pargs->wcs);
plotstuff_builtin_apply(cairo, pargs);
logverb("Plotting outline of WCS: image size is %g x %g\n",
anwcs_imagew(args->wcs), anwcs_imageh(args->wcs));
rd = dl_new(256);
anwcs_walk_image_boundary(args->wcs, args->stepsize, walk_callback, rd);
logverb("Outline: walked in %zu steps\n", dl_size(rd)/2);
if (dl_size(rd) == 0) {
printf("plot_outline: empty WCS outline.\n");
anwcs_print(args->wcs, stdout);
dl_free(rd);
return 0;
}
// avoid special case when there is a break between
// the beginning and end of the list.
dl_append(rd, dl_get(rd, 0));
dl_append(rd, dl_get(rd, 1));
lists = anwcs_walk_outline(pargs->wcs, rd, args->fill);
dl_free(rd);
for (i=0; i<pl_size(lists); i++) {
dl* xy = pl_get(lists, i);
int j;
for (j=0; j<dl_size(xy)/2; j++) {
double x,y;
x = dl_get(xy, j*2+0);
y = dl_get(xy, j*2+1);
if (j == 0) {
cairo_move_to(cairo, x, y);
} else {
cairo_line_to(cairo, x, y);
}
}
cairo_close_path(cairo);
if (args->fill)
cairo_fill(cairo);
else
cairo_stroke(cairo);
dl_free(xy);
}
pl_free(lists);
return 0;
}
int plot_outline_set_wcs_size(plotoutline_t* args, int W, int H) {
if (!args->wcs) {
ERROR("No WCS is currently set.");
return -1;
}
anwcs_set_size(args->wcs, W, H);
return 0;
}
int plot_outline_set_wcs_file(plotoutline_t* args, const char* filename, int ext) {
anwcs_t* wcs = anwcs_open(filename, ext);
if (!wcs) {
ERROR("Failed to read WCS file \"%s\"", filename);
return -1;
}
logverb("Read WCS file %s\n", filename);
if (args->wcs)
anwcs_free(args->wcs);
args->wcs = wcs;
//anwcs_print(args->wcs, stdout);
return 0;
}
int plot_outline_set_wcs(plotoutline_t* args, const sip_t* wcs) {
if (args->wcs)
anwcs_free(args->wcs);
args->wcs = anwcs_new_sip(wcs);
return 0;
}
int plot_outline_set_tan_wcs(plotoutline_t* args, const tan_t* wcs) {
if (args->wcs)
anwcs_free(args->wcs);
args->wcs = anwcs_new_tan(wcs);
return 0;
}
int plot_outline_set_fill(plotoutline_t* args, anbool fill) {
args->fill = fill;
return 0;
}
int plot_outline_command(const char* cmd, const char* cmdargs,
plot_args_t* pargs, void* baton) {
plotoutline_t* args = (plotoutline_t*)baton;
if (streq(cmd, "outline_wcs")) {
if (plot_outline_set_wcs_file(args, cmdargs, 0)) {
return -1;
}
} else if (streq(cmd, "outline_fill")) {
if (streq(cmdargs, "0"))
args->fill = FALSE;
else
args->fill = TRUE;
} else if (streq(cmd, "outline_step")) {
args->stepsize = atof(cmdargs);
} else {
ERROR("Did not understand command \"%s\"", cmd);
return -1;
}
return 0;
}
void plot_outline_free(plot_args_t* plotargs, void* baton) {
plotoutline_t* args = (plotoutline_t*)baton;
free(args);
}
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