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root/radiance/ray/src/util/glare.h
Revision: 1.6
Committed: Tue Mar 19 11:11:18 1991 UTC (33 years ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.5: +2 -2 lines
Log Message:
increased accuracy of source values

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     #define SEPS 2 /* sources this close ==> contig. */
20    
21     extern VIEW ourview; /* our view */
22     extern VIEW pictview; /* picture view */
23     extern VIEW leftview, rightview; /* leftmost and rightmost views */
24    
25     extern int verbose; /* verbose reporting */
26     extern char *progname; /* global argv[0] */
27    
28 greg 1.4 extern int sampdens; /* sample density */
29 greg 1.1 extern ANGLE glarang[]; /* glare calculation angles */
30     extern int nglarangs;
31 greg 1.2 extern double maxtheta; /* maximum glare angle (in radians) */
32 greg 1.1 extern int hsize; /* horizontal size */
33     extern int hlim; /* horizontal limit of central view */
34    
35     #define nglardirs (2*nglarangs+1)
36 greg 1.5 #define vsize (sampdens-1)
37 greg 1.4 #define h_theta(h) (-(double)(h)/(double)sampdens)
38 greg 1.1
39     extern struct illum {
40     float theta; /* glare direction */
41     float lcos, lsin; /* cosine and sine to left view */
42     float rcos, rsin; /* cosine and sine to right view */
43     double sum; /* sum of indirect luminances */
44     int n; /* number of values in sum */
45     } *indirect; /* array of indirect illuminances */
46    
47     struct srcspan {
48     short v; /* vertical position */
49     short l, r; /* left and right horizontal limits */
50     float brsum; /* sum of brightnesses for this span */
51     struct srcspan *next; /* next source span in list */
52     };
53    
54     extern struct source {
55     FVECT dir; /* source direction */
56 greg 1.6 double dom; /* solid angle of source */
57     double brt; /* average source brightness */
58 greg 1.1 struct srcspan *first; /* first span for this source */
59     struct source *next; /* next source in list */
60     } *donelist; /* finished sources */
61    
62     extern double getviewpix();