16 |
|
struct source *curlist = NULL; /* current source list */ |
17 |
|
struct source *donelist = NULL; /* finished sources */ |
18 |
|
|
19 |
– |
double threshold; /* glare threshold */ |
19 |
|
|
21 |
– |
|
20 |
|
struct srcspan * |
21 |
|
newspan(l, r, v, sb) /* allocate a new source span */ |
22 |
|
int l, r, v; |
49 |
|
memerr("view span brightness buffer"); |
50 |
|
for (v = vsize; v >= -vsize; v--) { |
51 |
|
close_sources(v); |
52 |
+ |
#ifndef DEBUG |
53 |
+ |
if (verbose) |
54 |
+ |
fprintf(stderr, "%s: analyzing... %3ld%%\r", |
55 |
+ |
progname, 100L*(vsize-v)/(2*vsize)); |
56 |
+ |
#endif |
57 |
|
getviewspan(v, spanbr); |
58 |
|
left = hsize + 1; |
59 |
|
for (h = -hsize; h <= hsize; h++) { |
78 |
|
if (left < h) |
79 |
|
addsrcspan(newspan(left,h,v,spanbr)); |
80 |
|
} |
78 |
– |
close_allsrcs(); |
81 |
|
free((char *)spanbr); |
82 |
+ |
close_allsrcs(); |
83 |
|
} |
84 |
|
|
85 |
|
|
91 |
|
register int i; |
92 |
|
|
93 |
|
if (h <= -hlim) { /* left region */ |
94 |
< |
d = (double)(h+hlim)/sampdens; |
95 |
< |
if (d <= -1.0+FTINY) |
94 |
> |
d = (double)(-h-hlim)/sampdens; |
95 |
> |
if (d >= 1.0-FTINY) |
96 |
|
return; |
97 |
|
tanb = d/sqrt(1.0-d*d); |
98 |
|
for (i = 0; i < nglardirs; i++) { |
99 |
|
d = indirect[i].lcos - tanb*indirect[i].lsin; |
100 |
|
if (d > 0.0) { |
101 |
|
indirect[i].sum += d * br; |
102 |
< |
indirect[i].n++; |
102 |
> |
indirect[i].n += d; |
103 |
|
} |
104 |
|
} |
105 |
|
return; |
106 |
|
} |
107 |
|
if (h >= hlim) { /* right region */ |
108 |
< |
d = (double)(h-hlim)/sampdens; |
109 |
< |
if (d >= 1.0-FTINY) |
108 |
> |
d = (double)(-h+hlim)/sampdens; |
109 |
> |
if (d <= -1.0+FTINY) |
110 |
|
return; |
111 |
|
tanb = d/sqrt(1.0-d*d); |
112 |
|
for (i = 0; i < nglardirs; i++) { |
113 |
|
d = indirect[i].rcos - tanb*indirect[i].rsin; |
114 |
|
if (d > 0.0) { |
115 |
|
indirect[i].sum += d * br; |
116 |
< |
indirect[i].n++; |
116 |
> |
indirect[i].n += d; |
117 |
|
} |
118 |
|
} |
119 |
|
return; |
123 |
|
d = cos(h_theta(h) - indirect[i].theta); |
124 |
|
if (d > 0.0) { |
125 |
|
indirect[i].sum += d * br; |
126 |
< |
indirect[i].n++; |
126 |
> |
indirect[i].n += d; |
127 |
|
} |
128 |
|
} |
129 |
|
} |
157 |
|
exit(1); |
158 |
|
} |
159 |
|
if (verbose) { |
160 |
+ |
#ifdef DEBUG |
161 |
|
pict_stats(); |
162 |
+ |
#endif |
163 |
|
fprintf(stderr, |
164 |
|
"%s: threshold set to %f cd/m2 from %d samples\n", |
165 |
|
progname, threshold, nsamps); |
182 |
|
if (cs == NULL) |
183 |
|
cs = this; |
184 |
|
else { |
180 |
– |
mergesource(cs, this); |
185 |
|
last->next = this->next; |
186 |
< |
free((char *)this); |
186 |
> |
mergesource(cs, this); |
187 |
|
this = last; |
188 |
|
} |
189 |
|
break; |
195 |
|
cs = (struct source *)malloc(sizeof(struct source)); |
196 |
|
if (cs == NULL) |
197 |
|
memerr("source records"); |
198 |
+ |
cs->dom = 0.0; |
199 |
|
cs->first = NULL; |
200 |
|
cs->next = curlist; |
201 |
|
curlist = cs; |
226 |
|
if (prev->next == NULL) |
227 |
|
prev->next = alp; |
228 |
|
sp->first = head.next; |
229 |
< |
ap->first = NULL; |
229 |
> |
if (ap->dom > 0.0 && sp->dom > 0.0) { /* sources are done */ |
230 |
> |
sp->dir[0] *= sp->dom; |
231 |
> |
sp->dir[1] *= sp->dom; |
232 |
> |
sp->dir[2] *= sp->dom; |
233 |
> |
fvsum(sp->dir, sp->dir, ap->dir, ap->dom); |
234 |
> |
normalize(sp->dir); |
235 |
> |
sp->brt = (sp->brt*sp->dom + ap->brt*ap->dom) |
236 |
> |
/ (sp->dom + ap->dom); |
237 |
> |
} |
238 |
> |
free((char *)ap); |
239 |
|
} |
240 |
|
|
241 |
|
|
308 |
|
"%s: found source at (%.3f,%.3f,%.3f), dw %.5f, br %.1f (%d samps)\n", |
309 |
|
progname, sp->dir[0], sp->dir[1], sp->dir[2], |
310 |
|
sp->dom, sp->brt, n); |
311 |
+ |
} |
312 |
+ |
|
313 |
+ |
|
314 |
+ |
struct source * |
315 |
+ |
findbuddy(s, l) /* find close enough source to s in l*/ |
316 |
+ |
register struct source *s, *l; |
317 |
+ |
{ |
318 |
+ |
struct source *bestbuddy = NULL; |
319 |
+ |
double d, r, mindist = MAXBUDDY; |
320 |
+ |
|
321 |
+ |
r = sqrt(s->dom/PI); |
322 |
+ |
for ( ; l != NULL; l = l->next) { |
323 |
+ |
d = sqrt(dist2(l->dir, s->dir)) - sqrt(l->dom/PI) - r; |
324 |
+ |
if (d < mindist) { |
325 |
+ |
bestbuddy = l; |
326 |
+ |
mindist = d; |
327 |
+ |
} |
328 |
+ |
} |
329 |
+ |
return(bestbuddy); |
330 |
+ |
} |
331 |
+ |
|
332 |
+ |
|
333 |
+ |
absorb_specks() /* eliminate too-small sources */ |
334 |
+ |
{ |
335 |
+ |
struct source head, *buddy; |
336 |
+ |
register struct source *last, *this; |
337 |
+ |
|
338 |
+ |
if (verbose) |
339 |
+ |
fprintf(stderr, "%s: absorbing small sources...\n", progname); |
340 |
+ |
head.next = donelist; |
341 |
+ |
last = &head; |
342 |
+ |
for (this = head.next; this != NULL; this = this->next) |
343 |
+ |
if (TOOSMALL(this)) { |
344 |
+ |
last->next = this->next; |
345 |
+ |
buddy = findbuddy(this, head.next); |
346 |
+ |
if (buddy != NULL) |
347 |
+ |
mergesource(buddy, this); |
348 |
+ |
else |
349 |
+ |
absorb(this); |
350 |
+ |
this = last; |
351 |
+ |
} else |
352 |
+ |
last = this; |
353 |
+ |
donelist = head.next; |
354 |
+ |
} |
355 |
+ |
|
356 |
+ |
|
357 |
+ |
absorb(s) /* absorb a source into indirect */ |
358 |
+ |
register struct source *s; |
359 |
+ |
{ |
360 |
+ |
FVECT dir; |
361 |
+ |
double d; |
362 |
+ |
register int i; |
363 |
+ |
|
364 |
+ |
for (i = 0; i < nglardirs; i++) { |
365 |
+ |
spinvector(dir, ourview.vdir, ourview.vup, indirect[i].theta); |
366 |
+ |
d = DOT(dir,s->dir)*s->dom*(sampdens*sampdens); |
367 |
+ |
if (d <= 0.0) |
368 |
+ |
continue; |
369 |
+ |
indirect[i].sum += d * s->brt; |
370 |
+ |
indirect[i].n += d; |
371 |
+ |
} |
372 |
+ |
for ( ; s->first != NULL; s->first = s->first->next) |
373 |
+ |
free((char *)s->first); |
374 |
+ |
free((char *)s); |
375 |
|
} |