| 1 | #include <stdio.h> |
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| 2 | #include <math.h> |
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| 3 | #include <stdarg.h> |
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| 4 | #include <sys/param.h> |
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| 5 | |
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| 6 | #include "tilerender.h" |
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| 7 | #include "render_skdt.h" |
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| 8 | #include "starutil.h" |
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| 9 | #include "mathutil.h" |
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| 10 | #include "mercrender.h" |
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| 11 | #include "cairoutils.h" |
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| 12 | #include "starkd.h" |
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| 13 | |
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| 14 | static void logmsg(char* format, ...) { |
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| 15 | va_list args; |
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| 16 | va_start(args, format); |
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| 17 | fprintf(stderr, "render_skdt: "); |
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| 18 | vfprintf(stderr, format, args); |
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| 19 | va_end(args); |
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| 20 | } |
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| 21 | |
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| 22 | int render_skdt(cairo_t* cairo, render_args_t* args) { |
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| 23 | sl* fns; |
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| 24 | int i; |
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| 25 | double center[3]; |
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| 26 | double r2; |
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| 27 | double p1[3], p2[3]; |
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| 28 | double rgba[4]; |
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| 29 | |
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| 30 | fns = sl_new(256); |
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| 31 | get_string_args_of_type(args, "skdt ", fns); |
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| 32 | |
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| 33 | if (!get_first_rgba_arg_of_type(args, "skdtrgba ", rgba)) { |
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| 34 | cairo_set_source_rgba(cairo, rgba[0], rgba[1], rgba[2], rgba[3]); |
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| 35 | } else { |
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| 36 | cairo_set_source_rgba(cairo, 0,1,0,1); |
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| 37 | } |
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| 38 | |
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| 39 | logmsg("got %i skdt files.\n", sl_size(fns)); |
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| 40 | |
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| 41 | radecdeg2xyzarr(args->ramin, args->decmin, p1); |
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| 42 | radecdeg2xyzarr(args->ramax, args->decmax, p2); |
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| 43 | star_midpoint(center, p1, p2); |
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| 44 | r2 = distsq(p1, center, 3); |
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| 45 | |
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| 46 | for (i=0; i<sl_size(fns); i++) { |
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| 47 | char* fn; |
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| 48 | startree_t* skdt; |
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| 49 | double* radec; |
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| 50 | int j, nstars; |
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| 51 | double crad = 3.0; |
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| 52 | |
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| 53 | fn = sl_get(fns, i); |
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| 54 | skdt = startree_open(fn); |
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| 55 | if (!skdt) { |
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| 56 | logmsg("failed to open star kdtree from file \"%s\"\n", fn); |
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| 57 | continue; |
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| 58 | } |
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| 59 | logmsg("reading star kdtree \"%s\"\n", fn); |
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| 60 | |
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| 61 | startree_search(skdt, center, r2, NULL, &radec, &nstars); |
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| 62 | |
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| 63 | for (j=0; j<nstars; j++) { |
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| 64 | double px, py; |
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| 65 | px = ra2pixelf(radec[2*j+0], args); |
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| 66 | py = dec2pixelf(radec[2*j+1], args); |
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| 67 | // cairo coords. |
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| 68 | px += 0.5; |
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| 69 | py += 0.5; |
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| 70 | if (!in_image_margin(px, py, crad, args)) |
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| 71 | continue; |
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| 72 | cairo_move_to(cairo, px+crad, py); |
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| 73 | cairo_arc(cairo, px, py, crad, 0.0, 2.0*M_PI); |
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| 74 | } |
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| 75 | cairo_stroke(cairo); |
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| 76 | |
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| 77 | free(radec); |
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| 78 | startree_close(skdt); |
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| 79 | } |
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| 80 | |
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| 81 | sl_free2(fns); |
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| 82 | return 0; |
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| 83 | } |
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| 84 | |
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