| 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) |
| 292 |
|
} |
| 293 |
|
|
| 294 |
|
|
| 295 |
< |
compdir(vd, x, y) /* compute direction for x,y */ |
| 295 |
> |
compdir(vd, x, y, se) /* compute direction for x,y */ |
| 296 |
|
FVECT vd; |
| 297 |
|
int x, y; |
| 298 |
+ |
SPANERR *se; |
| 299 |
|
{ |
| 299 |
– |
static int cury = 10000; |
| 300 |
– |
static double err, cmpval; |
| 301 |
– |
long t; |
| 300 |
|
FVECT org; /* dummy variable */ |
| 301 |
|
|
| 302 |
|
if (x <= -hlim) /* left region */ |
| 308 |
|
(double)(x-hlim)/(2*sampdens)+.5, |
| 309 |
|
(double)y/(2*sampdens)+.5)); |
| 310 |
|
/* central region */ |
| 311 |
< |
/* avoid over-counting of poles */ |
| 312 |
< |
if (cury != y) { |
| 313 |
< |
err = 0.0; |
| 314 |
< |
cmpval = sqrt(1.0 - (double)((long)y*y)/((long)vsize*vsize)); |
| 315 |
< |
cury = y; |
| 311 |
> |
if (se != NULL) { /* avoid over-counting of poles */ |
| 312 |
> |
se->err += se->prob; |
| 313 |
> |
if (se->err <= 0.5) |
| 314 |
> |
return(-1); |
| 315 |
> |
se->err -= 1.0; |
| 316 |
|
} |
| 319 |
– |
err += cmpval; |
| 320 |
– |
if (err <= 0.5) |
| 321 |
– |
return(-1); |
| 322 |
– |
err -= 1.0; |
| 317 |
|
if (viewray(org, vd, &ourview, .5, (double)y/(2*sampdens)+.5) < 0) |
| 318 |
|
return(-1); |
| 319 |
|
spinvector(vd, vd, ourview.vup, h_theta(x)); |
| 320 |
|
return(0); |
| 321 |
+ |
} |
| 322 |
+ |
|
| 323 |
+ |
|
| 324 |
+ |
setspanerr(se, y) /* initialize span error at y */ |
| 325 |
+ |
register SPANERR *se; |
| 326 |
+ |
int y; |
| 327 |
+ |
{ |
| 328 |
+ |
se->err = 0.0; |
| 329 |
+ |
se->prob = sqrt(1.0 - (double)((long)y*y)/((long)vsize*vsize)); |
| 330 |
|
} |
| 331 |
|
|
| 332 |
|
|
