| 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 |
|
|
#define SAMPDENS 50 /* 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 ANGLE glarang[]; /* glare calculation angles */
|
| 29 |
|
|
extern int nglarangs;
|
| 30 |
greg |
1.2 |
extern double maxtheta; /* maximum glare angle (in radians) */
|
| 31 |
greg |
1.1 |
extern int hsize; /* horizontal size */
|
| 32 |
|
|
extern int hlim; /* horizontal limit of central view */
|
| 33 |
|
|
|
| 34 |
|
|
#define nglardirs (2*nglarangs+1)
|
| 35 |
|
|
#define vsize SAMPDENS
|
| 36 |
greg |
1.3 |
#define h_theta(h) ((double)(h)/-(double)SAMPDENS)
|
| 37 |
greg |
1.1 |
|
| 38 |
|
|
extern struct illum {
|
| 39 |
|
|
float theta; /* glare direction */
|
| 40 |
|
|
float lcos, lsin; /* cosine and sine to left view */
|
| 41 |
|
|
float rcos, rsin; /* cosine and sine to right view */
|
| 42 |
|
|
double sum; /* sum of indirect luminances */
|
| 43 |
|
|
int n; /* number of values in sum */
|
| 44 |
|
|
} *indirect; /* array of indirect illuminances */
|
| 45 |
|
|
|
| 46 |
|
|
struct srcspan {
|
| 47 |
|
|
short v; /* vertical position */
|
| 48 |
|
|
short l, r; /* left and right horizontal limits */
|
| 49 |
|
|
float brsum; /* sum of brightnesses for this span */
|
| 50 |
|
|
struct srcspan *next; /* next source span in list */
|
| 51 |
|
|
};
|
| 52 |
|
|
|
| 53 |
|
|
extern struct source {
|
| 54 |
|
|
FVECT dir; /* source direction */
|
| 55 |
|
|
float dom; /* solid angle of source */
|
| 56 |
|
|
float brt; /* average source brightness */
|
| 57 |
|
|
struct srcspan *first; /* first span for this source */
|
| 58 |
|
|
struct source *next; /* next source in list */
|
| 59 |
|
|
} *donelist; /* finished sources */
|
| 60 |
|
|
|
| 61 |
|
|
extern double getviewpix();
|
