36 |
|
int nglarangs = 0; |
37 |
|
double maxtheta; /* maximum angle (in radians) */ |
38 |
|
int hsize; /* horizontal size */ |
39 |
– |
int hlim; /* central limit of horizontal */ |
39 |
|
|
40 |
|
struct illum *indirect; /* array of indirect illuminances */ |
41 |
|
|
42 |
+ |
long npixinvw; /* number of pixels in view */ |
43 |
+ |
long npixmiss; /* number of pixels missed */ |
44 |
|
|
45 |
+ |
|
46 |
|
main(argc, argv) |
47 |
|
int argc; |
48 |
|
char *argv[]; |
49 |
|
{ |
50 |
+ |
int combine = 1; |
51 |
|
int gotview = 0; |
52 |
|
int rval, i; |
53 |
|
char *err; |
101 |
|
case 'p': |
102 |
|
picture = argv[++i]; |
103 |
|
break; |
104 |
+ |
case 'c': |
105 |
+ |
combine = !combine; |
106 |
+ |
break; |
107 |
|
case 'd': |
108 |
|
case 'l': |
109 |
|
rtargv[rtargc++] = argv[i]; |
182 |
|
if (threshold <= FTINY) |
183 |
|
comp_thresh(); /* compute glare threshold */ |
184 |
|
analyze(); /* analyze view */ |
185 |
+ |
if (combine) |
186 |
+ |
absorb_specks(); /* eliminate tiny sources */ |
187 |
|
cleanup(); /* tidy up */ |
188 |
|
/* print header */ |
189 |
|
printargs(argc, argv, stdout); |
190 |
|
fputs(VIEWSTR, stdout); |
191 |
|
fprintview(&ourview, stdout); |
192 |
< |
printf("\n\n"); |
192 |
> |
printf("\n"); |
193 |
> |
fputformat("ASCII", stdout); |
194 |
> |
printf("\n"); |
195 |
|
printsources(); /* print glare sources */ |
196 |
|
printillum(); /* print illuminances */ |
197 |
|
exit(0); |
214 |
|
/* set direction vectors */ |
215 |
|
for (i = 0; glarang[i] != AEND; i++) |
216 |
|
; |
217 |
< |
if (i > 0 && glarang[0] <= 0 || glarang[i-1] >= 180) { |
217 |
> |
if (i > 0 && (glarang[0] <= 0 || glarang[i-1] >= 180)) { |
218 |
|
fprintf(stderr, "%s: glare angles must be between 1 and 179\n", |
219 |
|
progname); |
220 |
|
exit(1); |
226 |
|
maxtheta = (PI/180.)*glarang[nglarangs-1]; |
227 |
|
else |
228 |
|
maxtheta = 0.0; |
229 |
< |
hlim = sampdens*maxtheta; |
220 |
< |
hsize = hlim + sampdens - 1; |
229 |
> |
hsize = hlim(0) + sampdens - 1; |
230 |
|
if (hsize > (int)(PI*sampdens)) |
231 |
|
hsize = PI*sampdens; |
232 |
|
indirect = (struct illum *)calloc(nglardirs, sizeof(struct illum)); |
233 |
|
if (indirect == NULL) |
234 |
|
memerr("indirect illuminances"); |
235 |
+ |
npixinvw = npixmiss = 0L; |
236 |
|
copystruct(&leftview, &ourview); |
237 |
|
copystruct(&rightview, &ourview); |
238 |
|
spinvector(leftview.vdir, ourview.vdir, ourview.vup, maxtheta); |
281 |
|
cleanup() /* close files, wait for children */ |
282 |
|
{ |
283 |
|
if (verbose) |
284 |
< |
fprintf(stderr, "%s: cleaning up...\n", progname); |
284 |
> |
fprintf(stderr, "%s: cleaning up... \n", progname); |
285 |
|
if (picture != NULL) |
286 |
|
close_pict(); |
287 |
|
if (octree != NULL) |
288 |
|
done_rtrace(); |
289 |
+ |
if (npixinvw < 100*npixmiss) |
290 |
+ |
fprintf(stderr, "%s: warning -- missing %ld%% of samples\n", |
291 |
+ |
progname, 100L*npixmiss/npixinvw); |
292 |
|
} |
293 |
|
|
294 |
|
|
296 |
|
FVECT vd; |
297 |
|
int x, y; |
298 |
|
{ |
299 |
+ |
int hl; |
300 |
|
FVECT org; /* dummy variable */ |
301 |
|
|
302 |
< |
if (x <= -hlim) /* left region */ |
302 |
> |
hl = hlim(y); |
303 |
> |
if (x <= -hl) /* left region */ |
304 |
|
return(viewray(org, vd, &leftview, |
305 |
< |
(x+hlim)/(2.*sampdens)+.5, |
306 |
< |
y/(2.*sampdens)+.5)); |
307 |
< |
if (x >= hlim) /* right region */ |
305 |
> |
(double)(x+hl)/(2*sampdens)+.5, |
306 |
> |
(double)y/(2*sampdens)+.5)); |
307 |
> |
if (x >= hl) /* right region */ |
308 |
|
return(viewray(org, vd, &rightview, |
309 |
< |
(x-hlim)/(2.*sampdens)+.5, |
310 |
< |
y/(2.*sampdens)+.5)); |
311 |
< |
/* central region */ |
312 |
< |
if (viewray(org, vd, &ourview, .5, y/(2.*sampdens)+.5) < 0) |
309 |
> |
(double)(x-hl)/(2*sampdens)+.5, |
310 |
> |
(double)y/(2*sampdens)+.5)); |
311 |
> |
/* central region */ |
312 |
> |
if (viewray(org, vd, &ourview, .5, (double)y/(2*sampdens)+.5) < 0) |
313 |
|
return(-1); |
314 |
< |
spinvector(vd, vd, ourview.vup, h_theta(x)); |
314 |
> |
spinvector(vd, vd, ourview.vup, h_theta(x,y)); |
315 |
|
return(0); |
316 |
|
} |
317 |
|
|
318 |
|
|
319 |
+ |
double |
320 |
+ |
pixsize(x, y) /* return the solid angle of pixel at (x,y) */ |
321 |
+ |
int x, y; |
322 |
+ |
{ |
323 |
+ |
register int hl, xo; |
324 |
+ |
double disc; |
325 |
+ |
|
326 |
+ |
hl = hlim(y); |
327 |
+ |
if (x < -hl) |
328 |
+ |
xo = x+hl; |
329 |
+ |
else if (x > hl) |
330 |
+ |
xo = x-hl; |
331 |
+ |
else |
332 |
+ |
xo = 0; |
333 |
+ |
disc = 1. - (xo*xo + y*y)/(sampdens*sampdens); |
334 |
+ |
if (disc <= FTINY) |
335 |
+ |
return(0.); |
336 |
+ |
return(1./(sampdens*sampdens*sqrt(disc))); |
337 |
+ |
} |
338 |
+ |
|
339 |
+ |
|
340 |
|
memerr(s) /* malloc failure */ |
341 |
|
char *s; |
342 |
|
{ |
364 |
|
|
365 |
|
printf("BEGIN indirect illuminance\n"); |
366 |
|
for (i = 0; i < nglardirs; i++) |
367 |
< |
printf("\t%.0f\t%f\n", (180.0/PI)*indirect[i].theta, |
368 |
< |
PI * indirect[i].sum / (double)indirect[i].n); |
367 |
> |
if (indirect[i].n > FTINY) |
368 |
> |
printf("\t%.0f\t%f\n", (180.0/PI)*indirect[i].theta, |
369 |
> |
PI * indirect[i].sum / indirect[i].n); |
370 |
|
printf("END indirect illuminance\n"); |
371 |
|
} |