| 135 |
|
|
| 136 |
|
|
| 137 |
|
void |
| 138 |
< |
quit(code) /* quit program */ |
| 139 |
< |
int code; |
| 138 |
> |
quit(int code) /* quit program */ |
| 139 |
|
{ |
| 140 |
|
if (code) /* report status */ |
| 141 |
|
report(0); |
| 287 |
|
break; |
| 288 |
|
pctdone = 0.0; |
| 289 |
|
if (pout != NULL) { |
| 290 |
+ |
int myfd; |
| 291 |
|
close(1); /* reassign stdout */ |
| 292 |
|
sprintf(fbuf, pout, seq); |
| 293 |
+ |
tryagain: |
| 294 |
|
errno = 0; /* exclusive open */ |
| 295 |
< |
if (open(fbuf, O_WRONLY|O_CREAT|O_EXCL, 0666) != 1) { |
| 295 |
> |
if ((myfd = open(fbuf, O_WRONLY|O_CREAT|O_EXCL, 0666)) < 0) { |
| 296 |
|
if ((errno != EEXIST) | (prvr != NULL) || |
| 297 |
|
!strcmp(fbuf, pout)) { |
| 298 |
|
sprintf(errmsg, |
| 303 |
|
setview(&ourview); |
| 304 |
|
continue; /* don't clobber */ |
| 305 |
|
} |
| 306 |
+ |
if (myfd != 1) { |
| 307 |
+ |
unlink(fbuf); |
| 308 |
+ |
goto tryagain; /* leave it open */ |
| 309 |
+ |
} |
| 310 |
|
SET_FD_BINARY(1); |
| 311 |
|
dupheader(); |
| 312 |
|
} |
| 340 |
|
if ((pa < .99) | (pa > 1.01)) |
| 341 |
|
fputaspect(pa, stdout); |
| 342 |
|
fputnow(stdout); |
| 343 |
+ |
fputprims(stdprims, stdout); |
| 344 |
|
fputformat(COLRFMT, stdout); |
| 345 |
|
putchar('\n'); |
| 346 |
|
if (zout != NULL) |
| 660 |
|
int y |
| 661 |
|
) |
| 662 |
|
{ |
| 657 |
– |
extern void SDsquare2disk(double ds[2], double seedx, double seedy); |
| 663 |
|
RAY thisray; |
| 664 |
|
FVECT lorg, ldir; |
| 665 |
< |
double hpos, vpos, vdist, lmax; |
| 665 |
> |
double hpos, vpos, lmax; |
| 666 |
|
int i; |
| 667 |
|
/* compute view ray */ |
| 668 |
|
setcolor(col, 0.0, 0.0, 0.0); |
| 671 |
|
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
| 672 |
|
&ourview, hpos, vpos)) < -FTINY) |
| 673 |
|
return(0.0); |
| 669 |
– |
|
| 670 |
– |
vdist = ourview.vdist; |
| 674 |
|
/* set pixel index */ |
| 675 |
|
samplendx = pixnumber(x,y,hres,vres); |
| 676 |
|
/* optional motion blur */ |
| 685 |
|
} |
| 686 |
|
if (normalize(thisray.rdir) == 0.0) |
| 687 |
|
return(0.0); |
| 685 |
– |
vdist = (1.-d)*vdist + d*lastview.vdist; |
| 688 |
|
} |
| 689 |
< |
/* optional depth-of-field */ |
| 690 |
< |
if (dblur > FTINY) { |
| 691 |
< |
double vc, df[2]; |
| 690 |
< |
/* random point on disk */ |
| 691 |
< |
SDsquare2disk(df, frandom(), frandom()); |
| 692 |
< |
df[0] *= .5*dblur; |
| 693 |
< |
df[1] *= .5*dblur; |
| 694 |
< |
if ((ourview.type == VT_PER) | (ourview.type == VT_PAR)) { |
| 695 |
< |
double adj = 1.0; |
| 696 |
< |
if (ourview.type == VT_PER) |
| 697 |
< |
adj /= DOT(thisray.rdir, ourview.vdir); |
| 698 |
< |
df[0] /= sqrt(ourview.hn2); |
| 699 |
< |
df[1] /= sqrt(ourview.vn2); |
| 700 |
< |
for (i = 3; i--; ) { |
| 701 |
< |
vc = ourview.vp[i] + adj*vdist*thisray.rdir[i]; |
| 702 |
< |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
| 703 |
< |
df[1]*ourview.vvec[i] ; |
| 704 |
< |
thisray.rdir[i] = vc - thisray.rorg[i]; |
| 705 |
< |
} |
| 706 |
< |
} else { /* non-standard view case */ |
| 707 |
< |
double dfd = PI/4.*dblur*(.5 - frandom()); |
| 708 |
< |
if ((ourview.type != VT_ANG) & (ourview.type != VT_PLS)) { |
| 709 |
< |
if (ourview.type != VT_CYL) |
| 710 |
< |
df[0] /= sqrt(ourview.hn2); |
| 711 |
< |
df[1] /= sqrt(ourview.vn2); |
| 712 |
< |
} |
| 713 |
< |
for (i = 3; i--; ) { |
| 714 |
< |
vc = ourview.vp[i] + vdist*thisray.rdir[i]; |
| 715 |
< |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
| 716 |
< |
df[1]*ourview.vvec[i] + |
| 717 |
< |
dfd*ourview.vdir[i] ; |
| 718 |
< |
thisray.rdir[i] = vc - thisray.rorg[i]; |
| 719 |
< |
} |
| 720 |
< |
} |
| 721 |
< |
if (normalize(thisray.rdir) == 0.0) |
| 722 |
< |
return(0.0); |
| 723 |
< |
} |
| 689 |
> |
/* depth-of-field */ |
| 690 |
> |
if (!jitteraperture(thisray.rorg, thisray.rdir, &ourview, dblur)) |
| 691 |
> |
return(0.0); |
| 692 |
|
|
| 693 |
|
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 694 |
|
|
