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greg |
1.1 |
/* Copyright (c) 1991 Regents of the University of California */
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/* SCCSid "$SunId$ LBL" */
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/*
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* Common data structures for glare source finding routines
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*/
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#include "standard.h"
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#include "view.h"
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#include "color.h"
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#include "setscan.h"
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greg |
1.14 |
#define GLAREBR 7.0 /* glare source is this * avg. lum. */
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greg |
1.1 |
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greg |
1.17 |
#define SAMPDENS 75 /* default samples per unit in image */
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greg |
1.1 |
#define TSAMPSTEP 10 /* sample step to compute threshold */
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greg |
1.13 |
#define SEPS 1 /* sources this close ==> contig. */
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greg |
1.1 |
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greg |
1.8 |
#define SAMIN .005 /* minimum solid angle for source */
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#define MAXBUDDY (4.*sqrt(SAMIN/PI)) /* max separation for pairing */
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#define TOOSMALL(s) ((s)->brt*(s)->dom < threshold*SAMIN)
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greg |
1.17 |
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#define SABIG .025 /* solid angle of splittable source */
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greg |
2.2 |
#define LCORR .12 /* linearity of splittable source */
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greg |
1.8 |
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greg |
1.1 |
extern VIEW ourview; /* our view */
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extern VIEW pictview; /* picture view */
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extern VIEW leftview, rightview; /* leftmost and rightmost views */
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extern int verbose; /* verbose reporting */
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extern char *progname; /* global argv[0] */
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greg |
1.7 |
extern double threshold; /* threshold value for glare sources */
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greg |
1.4 |
extern int sampdens; /* sample density */
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greg |
1.1 |
extern ANGLE glarang[]; /* glare calculation angles */
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extern int nglarangs;
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greg |
1.2 |
extern double maxtheta; /* maximum glare angle (in radians) */
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greg |
1.1 |
extern int hsize; /* horizontal size */
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#define nglardirs (2*nglarangs+1)
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greg |
1.5 |
#define vsize (sampdens-1)
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greg |
1.16 |
#define hscale(v) sqrt((double)(sampdens*sampdens - (v)*(v)))
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#define hlim(v) (int)(maxtheta*hscale(v))
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#define h_theta(h,v) (-(h)/hscale(v))
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greg |
1.1 |
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extern struct illum {
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float theta; /* glare direction */
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float lcos, lsin; /* cosine and sine to left view */
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float rcos, rsin; /* cosine and sine to right view */
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double sum; /* sum of indirect luminances */
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greg |
1.10 |
double n; /* number of values in sum */
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greg |
1.1 |
} *indirect; /* array of indirect illuminances */
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struct srcspan {
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short v; /* vertical position */
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short l, r; /* left and right horizontal limits */
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float brsum; /* sum of brightnesses for this span */
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struct srcspan *next; /* next source span in list */
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};
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extern struct source {
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FVECT dir; /* source direction */
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greg |
1.6 |
double dom; /* solid angle of source */
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double brt; /* average source brightness */
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greg |
1.1 |
struct srcspan *first; /* first span for this source */
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struct source *next; /* next source in list */
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} *donelist; /* finished sources */
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greg |
1.14 |
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greg |
1.1 |
extern double getviewpix();
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greg |
1.15 |
extern double pixsize();
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greg |
1.11 |
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extern long npixinvw; /* number of samples in view */
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extern long npixmiss; /* number of samples missing */
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