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root/radiance/ray/src/util/glare.h
Revision: 1.13
Committed: Wed Apr 10 15:59:04 1991 UTC (32 years, 11 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.12: +1 -1 lines
Log Message:
fixed small bug in absorb_specks() and added -c option

File Contents

# User Rev Content
1 greg 1.1 /* Copyright (c) 1991 Regents of the University of California */
2    
3     /* SCCSid "$SunId$ LBL" */
4    
5     /*
6     * Common data structures for glare source finding routines
7     */
8    
9     #include "standard.h"
10     #include "view.h"
11     #include "color.h"
12     #include "setscan.h"
13    
14     #define GLAREBR 10.0 /* glare source is this * avg. lum. */
15    
16 greg 1.4 #define SAMPDENS 50 /* default samples per unit in image */
17 greg 1.1 #define TSAMPSTEP 10 /* sample step to compute threshold */
18    
19 greg 1.13 #define SEPS 1 /* sources this close ==> contig. */
20 greg 1.1
21 greg 1.8 #define SAMIN .005 /* minimum solid angle for source */
22     #define MAXBUDDY (4.*sqrt(SAMIN/PI)) /* max separation for pairing */
23    
24     #define TOOSMALL(s) ((s)->brt*(s)->dom < threshold*SAMIN)
25    
26 greg 1.1 extern VIEW ourview; /* our view */
27     extern VIEW pictview; /* picture view */
28     extern VIEW leftview, rightview; /* leftmost and rightmost views */
29    
30     extern int verbose; /* verbose reporting */
31     extern char *progname; /* global argv[0] */
32    
33 greg 1.7 extern double threshold; /* threshold value for glare sources */
34    
35 greg 1.4 extern int sampdens; /* sample density */
36 greg 1.1 extern ANGLE glarang[]; /* glare calculation angles */
37     extern int nglarangs;
38 greg 1.2 extern double maxtheta; /* maximum glare angle (in radians) */
39 greg 1.1 extern int hsize; /* horizontal size */
40     extern int hlim; /* horizontal limit of central view */
41    
42     #define nglardirs (2*nglarangs+1)
43 greg 1.5 #define vsize (sampdens-1)
44 greg 1.4 #define h_theta(h) (-(double)(h)/(double)sampdens)
45 greg 1.1
46     extern struct illum {
47     float theta; /* glare direction */
48     float lcos, lsin; /* cosine and sine to left view */
49     float rcos, rsin; /* cosine and sine to right view */
50     double sum; /* sum of indirect luminances */
51 greg 1.10 double n; /* number of values in sum */
52 greg 1.1 } *indirect; /* array of indirect illuminances */
53    
54     struct srcspan {
55     short v; /* vertical position */
56     short l, r; /* left and right horizontal limits */
57     float brsum; /* sum of brightnesses for this span */
58     struct srcspan *next; /* next source span in list */
59     };
60    
61     extern struct source {
62     FVECT dir; /* source direction */
63 greg 1.6 double dom; /* solid angle of source */
64     double brt; /* average source brightness */
65 greg 1.1 struct srcspan *first; /* first span for this source */
66     struct source *next; /* next source in list */
67     } *donelist; /* finished sources */
68    
69     extern double getviewpix();
70 greg 1.11
71     extern long npixinvw; /* number of samples in view */
72     extern long npixmiss; /* number of samples missing */