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/* Copyright (c) 1991 Regents of the University of California */ |
2 |
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
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|
4 |
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/* |
5 |
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* Find glare sources in a scene or image. |
6 |
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* |
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|
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#include "glare.h" |
11 |
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|
12 |
< |
#define FEQ(a,b) ((a)-(b)<=FTINY&&(a)-(b)<=FTINY) |
13 |
< |
#define VEQ(v1,v2) (FEQ((v1)[0],(v2)[0])&&FEQ((v1)[1],(v2)[1]) \ |
17 |
< |
&&FEQ((v1)[2],(v2)[2])) |
12 |
> |
char *rtargv[64] = {"rtrace", "-h-", "-ov", "-fff", "-ld-", "-i-", "-I-"}; |
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> |
int rtargc = 7; |
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|
19 |
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char *rtargv[32] = {"rtrace", "-h", "-ov", "-fff"}; |
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int rtargc = 4; |
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|
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VIEW ourview = STDVIEW; /* our view */ |
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VIEW pictview = STDVIEW; /* picture view */ |
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VIEW leftview, rightview; /* leftmost and rightmost views */ |
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char *octree = NULL; /* octree file name */ |
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|
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int verbose = 0; /* verbose reporting */ |
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char *progname; /* global argv[0] */ |
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|
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double threshold = 0.; /* glare threshold */ |
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|
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int nglarangs = 0; |
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double maxtheta; /* maximum angle (in radians) */ |
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int hsize; /* horizontal size */ |
39 |
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int hlim; /* central limit of horizontal */ |
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|
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struct illum *indirect; /* array of indirect illuminances */ |
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|
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long npixinvw; /* number of pixels in view */ |
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long npixmiss; /* number of pixels missed */ |
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|
37 |
+ |
static int angcmp(const void *ap1, const void *ap2); |
38 |
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static void init(void); |
39 |
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static void cleanup(void); |
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static void printsources(void); |
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static void printillum(void); |
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|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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|
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|
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int |
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main( |
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int argc, |
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char *argv[] |
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) |
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{ |
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int combine = 1; |
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int gotview = 0; |
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int rval, i; |
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char *err; |
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|
56 |
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progname = argv[0]; |
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/* set global progname */ |
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fixargv0(argv[0]); |
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/* process options */ |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
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/* expand arguments */ |
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while ((rval = expandarg(&argc, &argv, i)) > 0) |
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; |
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if (rval < 0) { |
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fprintf(stderr, "%s: cannot expand '%s'\n", |
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argv[0], argv[i]); |
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exit(1); |
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} |
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rval = getviewopt(&ourview, argc-i, argv+i); |
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if (rval >= 0) { |
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i += rval; |
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} |
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if (argv[i][2] != 'f') |
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goto userr; |
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rval = viewfile(argv[++i], &ourview, 0, 0); |
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rval = viewfile(argv[++i], &ourview, NULL); |
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if (rval < 0) { |
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fprintf(stderr, |
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"%s: cannot open view file \"%s\"\n", |
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case 'p': |
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picture = argv[++i]; |
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break; |
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case 'c': |
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combine = !combine; |
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break; |
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case 'd': |
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rtargv[rtargc++] = argv[i]; |
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if (argv[i][2] != 'v') |
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rtargv[rtargc++] = argv[++i]; |
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break; |
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case 'l': |
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if (argv[i][2] == 'd') |
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break; |
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/* FALL THROUGH */ |
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case 's': |
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case 'P': |
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case 'n': |
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rtargv[rtargc++] = argv[i]; |
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rtargv[rtargc++] = argv[++i]; |
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break; |
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case 'w': |
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case 'u': |
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case 'b': |
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rtargv[rtargc++] = argv[i]; |
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break; |
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case 'a': |
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rtargv[rtargc++] = argv[i]; |
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if (argv[i][2] == 'v') { |
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} |
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rtargv[rtargc++] = argv[++i]; |
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break; |
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case 'm': |
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rtargv[rtargc++] = argv[i]; |
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if ((argv[i][2] == 'e') | (argv[i][2] == 'a')) { |
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rtargv[rtargc++] = argv[++i]; |
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rtargv[rtargc++] = argv[++i]; |
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} |
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rtargv[rtargc++] = argv[++i]; |
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break; |
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default: |
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goto userr; |
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} |
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} |
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/* get view */ |
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if (picture != NULL) { |
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rval = viewfile(picture, &pictview, 0, 0); |
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rval = viewfile(picture, &pictview, NULL); |
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if (rval < 0) { |
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fprintf(stderr, "%s: cannot open picture file \"%s\"\n", |
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progname, picture); |
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progname); |
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exit(1); |
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} |
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copystruct(&ourview, &pictview); |
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} else if (picture != NULL && !VEQ(ourview.vp, pictview.vp)) { |
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ourview = pictview; |
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} else if (picture != NULL && !VABSEQ(ourview.vp, pictview.vp)) { |
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fprintf(stderr, "%s: picture must have same viewpoint\n", |
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progname); |
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exit(1); |
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if (threshold <= FTINY) |
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comp_thresh(); /* compute glare threshold */ |
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analyze(); /* analyze view */ |
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if (combine) |
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absorb_specks(); /* eliminate tiny sources */ |
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cleanup(); /* tidy up */ |
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/* print header */ |
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newheader("RADIANCE", stdout); |
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printargs(argc, argv, stdout); |
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fputs(VIEWSTR, stdout); |
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fprintview(&ourview, stdout); |
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printf("\n\n"); |
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printf("\n"); |
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fputformat("ascii", stdout); |
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printf("\n"); |
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printsources(); /* print glare sources */ |
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printillum(); /* print illuminances */ |
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exit(0); |
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} |
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init() /* initialize global variables */ |
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static int |
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angcmp( /* compare two angles */ |
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const void *ap1, |
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const void *ap2 |
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) |
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{ |
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int a1, a2; |
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|
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a1 = *(ANGLE *)ap1; |
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a2 = *(ANGLE *)ap2; |
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if (a1 == a2) { |
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fprintf(stderr, "%s: duplicate glare angle (%d)\n", |
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progname, a1); |
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exit(1); |
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} |
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return(a1-a2); |
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} |
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|
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|
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static void |
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init(void) /* initialize global variables */ |
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{ |
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double d; |
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register int i; |
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int i; |
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|
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if (verbose) |
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fprintf(stderr, "%s: initializing data structures...\n", |
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/* set direction vectors */ |
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for (i = 0; glarang[i] != AEND; i++) |
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; |
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if (i > 0 && (glarang[0] <= 0 || glarang[i-1] >= 180)) { |
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fprintf(stderr, "%s: glare angles must be between 1 and 179\n", |
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qsort(glarang, i, sizeof(ANGLE), angcmp); |
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if (i > 0 && (glarang[0] <= 0 || glarang[i-1] > 180)) { |
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fprintf(stderr, "%s: glare angles must be between 1 and 180\n", |
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progname); |
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exit(1); |
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} |
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maxtheta = (PI/180.)*glarang[nglarangs-1]; |
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else |
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maxtheta = 0.0; |
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hlim = sampdens*maxtheta; |
223 |
< |
hsize = hlim + sampdens - 1; |
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> |
hsize = hlim(0) + sampdens - 1; |
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if (hsize > (int)(PI*sampdens)) |
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hsize = PI*sampdens; |
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indirect = (struct illum *)calloc(nglardirs, sizeof(struct illum)); |
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if (indirect == NULL) |
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memerr("indirect illuminances"); |
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npixinvw = npixmiss = 0L; |
290 |
< |
copystruct(&leftview, &ourview); |
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< |
copystruct(&rightview, &ourview); |
290 |
> |
leftview = ourview; |
291 |
> |
rightview = ourview; |
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spinvector(leftview.vdir, ourview.vdir, ourview.vup, maxtheta); |
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spinvector(rightview.vdir, ourview.vdir, ourview.vup, -maxtheta); |
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setview(&leftview); |
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} |
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|
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< |
cleanup() /* close files, wait for children */ |
335 |
> |
static void |
336 |
> |
cleanup(void) /* close files, wait for children */ |
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{ |
338 |
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if (verbose) |
339 |
< |
fprintf(stderr, "%s: cleaning up...\n", progname); |
339 |
> |
fprintf(stderr, "%s: cleaning up... \n", progname); |
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if (picture != NULL) |
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close_pict(); |
342 |
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if (octree != NULL) |
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done_rtrace(); |
344 |
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if (npixinvw < 100*npixmiss) |
345 |
< |
fprintf(stderr, "%s: warning -- missing %ld%% of samples\n", |
346 |
< |
progname, 100L*npixmiss/npixinvw); |
345 |
> |
fprintf(stderr, "%s: warning -- missing %d%% of samples\n", |
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> |
progname, (int)(100L*npixmiss/npixinvw)); |
347 |
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} |
348 |
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|
349 |
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|
350 |
< |
compdir(vd, x, y) /* compute direction for x,y */ |
351 |
< |
FVECT vd; |
352 |
< |
int x, y; |
350 |
> |
int |
351 |
> |
compdir( /* compute direction for x,y */ |
352 |
> |
FVECT vd, |
353 |
> |
int x, |
354 |
> |
int y |
355 |
> |
) |
356 |
|
{ |
357 |
< |
static int cury = 10000; |
294 |
< |
static double err, cmpval; |
295 |
< |
long t; |
357 |
> |
int hl; |
358 |
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FVECT org; /* dummy variable */ |
359 |
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|
360 |
< |
if (x <= -hlim) /* left region */ |
360 |
> |
hl = hlim(y); |
361 |
> |
if (x <= -hl) { /* left region */ |
362 |
> |
if (x <= -hl-sampdens) |
363 |
> |
return(-1); |
364 |
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return(viewray(org, vd, &leftview, |
365 |
< |
(double)(x+hlim)/(2*sampdens)+.5, |
365 |
> |
(double)(x+hl)/(2*sampdens)+.5, |
366 |
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(double)y/(2*sampdens)+.5)); |
367 |
< |
if (x >= hlim) /* right region */ |
367 |
> |
} |
368 |
> |
if (x >= hl) { /* right region */ |
369 |
> |
if (x >= hl+sampdens) |
370 |
> |
return(-1); |
371 |
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return(viewray(org, vd, &rightview, |
372 |
< |
(double)(x-hlim)/(2*sampdens)+.5, |
372 |
> |
(double)(x-hl)/(2*sampdens)+.5, |
373 |
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(double)y/(2*sampdens)+.5)); |
306 |
– |
/* central region */ |
307 |
– |
/* avoid over-counting of poles */ |
308 |
– |
if (cury != y) { |
309 |
– |
err = 0.0; |
310 |
– |
cmpval = sqrt(1.0 - (double)((long)y*y)/((long)vsize*vsize)); |
311 |
– |
cury = y; |
374 |
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} |
375 |
< |
err += cmpval; |
314 |
< |
if (err <= 0.5) |
315 |
< |
return(-1); |
316 |
< |
err -= 1.0; |
375 |
> |
/* central region */ |
376 |
|
if (viewray(org, vd, &ourview, .5, (double)y/(2*sampdens)+.5) < 0) |
377 |
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return(-1); |
378 |
< |
spinvector(vd, vd, ourview.vup, h_theta(x)); |
378 |
> |
spinvector(vd, vd, ourview.vup, h_theta(x,y)); |
379 |
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return(0); |
380 |
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} |
381 |
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|
382 |
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|
383 |
< |
memerr(s) /* malloc failure */ |
384 |
< |
char *s; |
383 |
> |
double |
384 |
> |
pixsize( /* return the solid angle of pixel at (x,y) */ |
385 |
> |
int x, |
386 |
> |
int y |
387 |
> |
) |
388 |
|
{ |
389 |
+ |
int hl, xo; |
390 |
+ |
double disc; |
391 |
+ |
|
392 |
+ |
hl = hlim(y); |
393 |
+ |
if (x < -hl) |
394 |
+ |
xo = x+hl; |
395 |
+ |
else if (x > hl) |
396 |
+ |
xo = x-hl; |
397 |
+ |
else |
398 |
+ |
xo = 0; |
399 |
+ |
disc = 1. - (double)((long)xo*xo + (long)y*y)/((long)sampdens*sampdens); |
400 |
+ |
if (disc <= FTINY*FTINY) |
401 |
+ |
return(0.); |
402 |
+ |
return(1./(sampdens*sampdens*sqrt(disc))); |
403 |
+ |
} |
404 |
+ |
|
405 |
+ |
|
406 |
+ |
void |
407 |
+ |
memerr( /* malloc failure */ |
408 |
+ |
char *s |
409 |
+ |
) |
410 |
+ |
{ |
411 |
|
fprintf(stderr, "%s: out of memory for %s\n", progname, s); |
412 |
|
exit(1); |
413 |
|
} |
414 |
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|
415 |
|
|
416 |
< |
printsources() /* print out glare sources */ |
416 |
> |
static void |
417 |
> |
printsources(void) /* print out glare sources */ |
418 |
|
{ |
419 |
< |
register struct source *sp; |
419 |
> |
struct source *sp; |
420 |
|
|
421 |
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printf("BEGIN glare source\n"); |
422 |
|
for (sp = donelist; sp != NULL; sp = sp->next) |
423 |
< |
printf("\t%f %f %f\t%f\t%f\n", |
423 |
> |
printf("\t%f %f %f\t%e\t%e\n", |
424 |
|
sp->dir[0], sp->dir[1], sp->dir[2], |
425 |
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sp->dom, sp->brt); |
426 |
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printf("END glare source\n"); |
427 |
|
} |
428 |
|
|
429 |
|
|
430 |
< |
printillum() /* print out indirect illuminances */ |
430 |
> |
static void |
431 |
> |
printillum(void) /* print out indirect illuminances */ |
432 |
|
{ |
433 |
< |
register int i; |
433 |
> |
int i; |
434 |
|
|
435 |
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printf("BEGIN indirect illuminance\n"); |
436 |
|
for (i = 0; i < nglardirs; i++) |