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root/radiance/ray/src/util/glare.h
Revision: 1.7
Committed: Tue Mar 19 17:31:35 1991 UTC (33 years ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.6: +2 -0 lines
Log Message:
added -t option for setting glare threshold

File Contents

# Content
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 #define SAMPDENS 50 /* default samples per unit in image */
17 #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 extern double threshold; /* threshold value for glare sources */
29
30 extern int sampdens; /* sample density */
31 extern ANGLE glarang[]; /* glare calculation angles */
32 extern int nglarangs;
33 extern double maxtheta; /* maximum glare angle (in radians) */
34 extern int hsize; /* horizontal size */
35 extern int hlim; /* horizontal limit of central view */
36
37 #define nglardirs (2*nglarangs+1)
38 #define vsize (sampdens-1)
39 #define h_theta(h) (-(double)(h)/(double)sampdens)
40
41 extern struct illum {
42 float theta; /* glare direction */
43 float lcos, lsin; /* cosine and sine to left view */
44 float rcos, rsin; /* cosine and sine to right view */
45 double sum; /* sum of indirect luminances */
46 int n; /* number of values in sum */
47 } *indirect; /* array of indirect illuminances */
48
49 struct srcspan {
50 short v; /* vertical position */
51 short l, r; /* left and right horizontal limits */
52 float brsum; /* sum of brightnesses for this span */
53 struct srcspan *next; /* next source span in list */
54 };
55
56 extern struct source {
57 FVECT dir; /* source direction */
58 double dom; /* solid angle of source */
59 double brt; /* average source brightness */
60 struct srcspan *first; /* first span for this source */
61 struct source *next; /* next source in list */
62 } *donelist; /* finished sources */
63
64 extern double getviewpix();