9 |
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*/ |
10 |
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|
11 |
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#include "glare.h" |
12 |
+ |
#include "linregr.h" |
13 |
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|
14 |
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#define vcont(vd,vu) ((vu)-(vd)<=SEPS) |
15 |
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#define hcont(s1,s2) ((s1)->r-(s2)->l>=-SEPS&&(s2)->r-(s1)->l>=-SEPS) |
51 |
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for (v = vsize; v >= -vsize; v--) { |
52 |
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close_sources(v); |
53 |
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#ifndef DEBUG |
54 |
< |
if (verbose) |
54 |
> |
if (verbose) { |
55 |
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fprintf(stderr, "%s: analyzing... %3ld%%\r", |
56 |
|
progname, 100L*(vsize-v)/(2*vsize)); |
57 |
+ |
fflush(stderr); |
58 |
+ |
} |
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#endif |
60 |
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getviewspan(v, spanbr); |
61 |
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left = hsize + 1; |
75 |
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addsrcspan(newspan(left,h,v,spanbr)); |
76 |
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left = hsize + 1; |
77 |
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} |
78 |
< |
addindirect(h, spanbr[h+hsize]); |
78 |
> |
addindirect(h, v, spanbr[h+hsize]); |
79 |
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} |
80 |
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} |
81 |
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if (left < h) |
86 |
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} |
87 |
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|
88 |
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|
89 |
< |
addindirect(h, br) /* add brightness to indirect illuminances */ |
90 |
< |
int h; |
89 |
> |
addindirect(h, v, br) /* add brightness to indirect illuminances */ |
90 |
> |
int h, v; |
91 |
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double br; |
92 |
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{ |
93 |
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double tanb, d; |
94 |
+ |
int hl; |
95 |
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register int i; |
96 |
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|
97 |
< |
if (h <= -hlim) { /* left region */ |
98 |
< |
d = (double)(-h-hlim)/sampdens; |
97 |
> |
hl = hlim(v); |
98 |
> |
if (h <= -hl) { /* left region */ |
99 |
> |
d = (double)(-h-hl)/sampdens; |
100 |
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if (d >= 1.0-FTINY) |
101 |
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return; |
102 |
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tanb = d/sqrt(1.0-d*d); |
109 |
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} |
110 |
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return; |
111 |
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} |
112 |
< |
if (h >= hlim) { /* right region */ |
113 |
< |
d = (double)(-h+hlim)/sampdens; |
112 |
> |
if (h >= hl) { /* right region */ |
113 |
> |
d = (double)(-h+hl)/sampdens; |
114 |
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if (d <= -1.0+FTINY) |
115 |
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return; |
116 |
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tanb = d/sqrt(1.0-d*d); |
125 |
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} |
126 |
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/* central region */ |
127 |
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for (i = 0; i < nglardirs; i++) { |
128 |
< |
d = cos(h_theta(h) - indirect[i].theta); |
128 |
> |
d = cos(h_theta(h,v) - indirect[i].theta); |
129 |
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if (d > 0.0) { |
130 |
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indirect[i].sum += d * br; |
131 |
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indirect[i].n += d; |
136 |
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|
137 |
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comp_thresh() /* compute glare threshold */ |
138 |
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{ |
134 |
– |
SPANERR sperr; |
139 |
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int h, v; |
140 |
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int nsamps; |
141 |
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double brsum, br; |
146 |
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brsum = 0.0; |
147 |
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nsamps = 0; |
148 |
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for (v = vsize; v >= -vsize; v -= TSAMPSTEP) { |
145 |
– |
setspanerr(&sperr, v); |
149 |
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for (h = -hsize; h <= hsize; h += TSAMPSTEP) { |
150 |
< |
if ((br = getviewpix(h, v, &sperr)) < 0.0) |
150 |
> |
if ((br = getviewpix(h, v)) < 0.0) |
151 |
|
continue; |
152 |
|
brsum += br; |
153 |
|
nsamps++; |
278 |
|
} |
279 |
|
|
280 |
|
|
281 |
+ |
struct srcspan * |
282 |
+ |
splitspan(sso, h, v, m) /* divide source span at point */ |
283 |
+ |
register struct srcspan *sso; |
284 |
+ |
double h, v, m; |
285 |
+ |
{ |
286 |
+ |
register struct srcspan *ssn; |
287 |
+ |
double d; |
288 |
+ |
int hs; |
289 |
+ |
|
290 |
+ |
d = h - m*(sso->v - v); |
291 |
+ |
hs = d < 0. ? d-.5 : d+.5; |
292 |
+ |
if (sso->l >= hs) |
293 |
+ |
return(NULL); |
294 |
+ |
if (sso->r <= hs) |
295 |
+ |
return(sso); |
296 |
+ |
/* need to split it */ |
297 |
+ |
ssn = (struct srcspan *)malloc(sizeof(struct srcspan)); |
298 |
+ |
if (ssn == NULL) |
299 |
+ |
memerr("source spans in splitspan"); |
300 |
+ |
ssn->brsum = (double)(hs - sso->l)/(sso->r - sso->l) * sso->brsum; |
301 |
+ |
sso->brsum -= ssn->brsum; |
302 |
+ |
ssn->v = sso->v; |
303 |
+ |
ssn->l = sso->l; |
304 |
+ |
ssn->r = sso->l = hs; |
305 |
+ |
return(ssn); |
306 |
+ |
} |
307 |
+ |
|
308 |
+ |
|
309 |
+ |
struct source * |
310 |
+ |
splitsource(so) /* divide source in two if it's big and long */ |
311 |
+ |
struct source *so; |
312 |
+ |
{ |
313 |
+ |
LRSUM lr; |
314 |
+ |
LRLIN fit; |
315 |
+ |
register struct srcspan *ss, *ssn; |
316 |
+ |
struct srcspan *ssl, *ssnl, head; |
317 |
+ |
int h; |
318 |
+ |
double mh, mv; |
319 |
+ |
struct source *sn; |
320 |
+ |
|
321 |
+ |
lrclear(&lr); |
322 |
+ |
for (ss = so->first; ss != NULL; ss = ss->next) |
323 |
+ |
for (h = ss->l; h < ss->r; h++) |
324 |
+ |
lrpoint(h, ss->v, &lr); |
325 |
+ |
if ((double)lr.n/(sampdens*sampdens) < SABIG) |
326 |
+ |
return(NULL); /* too small */ |
327 |
+ |
if (lrfit(&fit, &lr) < 0) |
328 |
+ |
return(NULL); /* can't fit a line */ |
329 |
+ |
if (fit.correlation < LCORR && fit.correlation > -LCORR) |
330 |
+ |
return(NULL); |
331 |
+ |
if (verbose) |
332 |
+ |
fprintf(stderr, "%s: splitting large source\n", progname); |
333 |
+ |
mh = lrxavg(&lr); |
334 |
+ |
mv = lryavg(&lr); |
335 |
+ |
sn = (struct source *)malloc(sizeof(struct source)); |
336 |
+ |
if (sn == NULL) |
337 |
+ |
memerr("source records in splitsource"); |
338 |
+ |
sn->dom = 0.0; |
339 |
+ |
sn->first = NULL; |
340 |
+ |
ssnl = NULL; |
341 |
+ |
head.next = so->first; |
342 |
+ |
ssl = &head; |
343 |
+ |
for (ss = so->first; ss != NULL; ssl = ss, ss = ss->next) |
344 |
+ |
if ((ssn = splitspan(ss, mh, mv, fit.slope)) != NULL) { |
345 |
+ |
if (ssn == ss) { /* remove from old */ |
346 |
+ |
ssl->next = ss->next; |
347 |
+ |
ss = ssl; |
348 |
+ |
} |
349 |
+ |
if (ssnl == NULL) /* add to new */ |
350 |
+ |
sn->first = ssn; |
351 |
+ |
else |
352 |
+ |
ssnl->next = ssn; |
353 |
+ |
ssn->next = NULL; |
354 |
+ |
ssnl = ssn; |
355 |
+ |
} |
356 |
+ |
so->first = head.next; |
357 |
+ |
return(sn); |
358 |
+ |
} |
359 |
+ |
|
360 |
+ |
|
361 |
|
donesource(sp) /* finished with this source */ |
362 |
|
register struct source *sp; |
363 |
|
{ |
364 |
< |
FVECT dthis, dright; |
364 |
> |
struct source *newsrc; |
365 |
|
register struct srcspan *ss; |
366 |
|
int h, n; |
367 |
< |
double d; |
367 |
> |
double hsum, vsum, d; |
368 |
|
|
369 |
+ |
while ((newsrc = splitsource(sp)) != NULL) /* split it? */ |
370 |
+ |
donesource(newsrc); |
371 |
|
sp->dom = 0.0; |
372 |
< |
sp->dir[0] = sp->dir[1] = sp->dir[2] = 0.0; |
372 |
> |
hsum = vsum = 0.0; |
373 |
|
sp->brt = 0.0; |
374 |
|
n = 0; |
375 |
|
for (ss = sp->first; ss != NULL; ss = ss->next) { |
376 |
|
sp->brt += ss->brsum; |
377 |
|
n += ss->r - ss->l; |
378 |
< |
if (compdir(dright, ss->r, ss->v, NULL) < 0) |
379 |
< |
compdir(dright, ss->r-2, ss->v, NULL); |
380 |
< |
for (h = ss->r-1; h >= ss->l; h--) |
381 |
< |
if (compdir(dthis, h, ss->v, NULL) == 0) { |
382 |
< |
d = dist2(dthis, dright); |
383 |
< |
fvsum(sp->dir, sp->dir, dthis, d); |
299 |
< |
sp->dom += d; |
300 |
< |
VCOPY(dright, dthis); |
301 |
< |
} |
302 |
< |
free((char *)ss); |
378 |
> |
for (h = ss->l; h < ss->r; h++) { |
379 |
> |
d = pixsize(h, ss->v); |
380 |
> |
hsum += d*h; |
381 |
> |
vsum += d*ss->v; |
382 |
> |
sp->dom += d; |
383 |
> |
} |
384 |
|
} |
304 |
– |
sp->first = NULL; |
385 |
|
sp->brt /= (double)n; |
386 |
< |
normalize(sp->dir); |
386 |
> |
compdir(sp->dir, (int)(hsum/sp->dom), (int)(vsum/sp->dom)); |
387 |
> |
freespans(sp); |
388 |
|
sp->next = donelist; |
389 |
|
donelist = sp; |
390 |
|
if (verbose) |
453 |
|
indirect[i].sum += d * s->brt; |
454 |
|
indirect[i].n += d; |
455 |
|
} |
456 |
< |
for ( ; s->first != NULL; s->first = s->first->next) |
376 |
< |
free((char *)s->first); |
456 |
> |
freespans(s); |
457 |
|
free((char *)s); |
458 |
+ |
} |
459 |
+ |
|
460 |
+ |
|
461 |
+ |
freespans(sp) /* free spans associated with source */ |
462 |
+ |
struct source *sp; |
463 |
+ |
{ |
464 |
+ |
register struct srcspan *ss; |
465 |
+ |
|
466 |
+ |
for (ss = sp->first; ss != NULL; ss = ss->next) |
467 |
+ |
free((char *)ss); |
468 |
+ |
sp->first = NULL; |
469 |
|
} |