| 92 |
|
int backvis = 1; /* back face visibility */ |
| 93 |
|
|
| 94 |
|
int maxdepth = 7; /* maximum recursion depth */ |
| 95 |
< |
double minweight = 1e-3; /* minimum ray weight */ |
| 95 |
> |
double minweight = 1e-4; /* minimum ray weight */ |
| 96 |
|
|
| 97 |
|
char *ambfile = NULL; /* ambient file name */ |
| 98 |
|
COLOR ambval = BLKCOLOR; /* ambient value */ |
| 662 |
|
{ |
| 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); |
| 674 |
– |
|
| 675 |
– |
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); |
| 690 |
– |
vdist = (1.-d)*vdist + d*lastview.vdist; |
| 688 |
|
} |
| 689 |
< |
/* optional depth-of-field */ |
| 690 |
< |
if (dblur > FTINY) { |
| 691 |
< |
double vc, df[2]; |
| 695 |
< |
/* random point on disk */ |
| 696 |
< |
SDsquare2disk(df, frandom(), frandom()); |
| 697 |
< |
df[0] *= .5*dblur; |
| 698 |
< |
df[1] *= .5*dblur; |
| 699 |
< |
if ((ourview.type == VT_PER) | (ourview.type == VT_PAR)) { |
| 700 |
< |
double adj = 1.0; |
| 701 |
< |
if (ourview.type == VT_PER) |
| 702 |
< |
adj /= DOT(thisray.rdir, ourview.vdir); |
| 703 |
< |
df[0] /= sqrt(ourview.hn2); |
| 704 |
< |
df[1] /= sqrt(ourview.vn2); |
| 705 |
< |
for (i = 3; i--; ) { |
| 706 |
< |
vc = ourview.vp[i] + adj*vdist*thisray.rdir[i]; |
| 707 |
< |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
| 708 |
< |
df[1]*ourview.vvec[i] ; |
| 709 |
< |
thisray.rdir[i] = vc - thisray.rorg[i]; |
| 710 |
< |
} |
| 711 |
< |
} else { /* non-standard view case */ |
| 712 |
< |
double dfd = PI/4.*dblur*(.5 - frandom()); |
| 713 |
< |
if ((ourview.type != VT_ANG) & (ourview.type != VT_PLS)) { |
| 714 |
< |
if (ourview.type != VT_CYL) |
| 715 |
< |
df[0] /= sqrt(ourview.hn2); |
| 716 |
< |
df[1] /= sqrt(ourview.vn2); |
| 717 |
< |
} |
| 718 |
< |
for (i = 3; i--; ) { |
| 719 |
< |
vc = ourview.vp[i] + vdist*thisray.rdir[i]; |
| 720 |
< |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
| 721 |
< |
df[1]*ourview.vvec[i] + |
| 722 |
< |
dfd*ourview.vdir[i] ; |
| 723 |
< |
thisray.rdir[i] = vc - thisray.rorg[i]; |
| 724 |
< |
} |
| 725 |
< |
} |
| 726 |
< |
if (normalize(thisray.rdir) == 0.0) |
| 727 |
< |
return(0.0); |
| 728 |
< |
} |
| 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 |
|
|
