520 |
|
if (r->rmax > FTINY) { /* except aft plane if one */ |
521 |
|
r->ro = &Aftplane; |
522 |
|
r->rot = r->rmax; |
523 |
< |
for (i = 0; i < 3; i++) |
524 |
< |
r->rop[i] = r->rorg[i] + r->rot*r->rdir[i]; |
523 |
> |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
524 |
|
} |
525 |
|
/* find global cube entrance point */ |
526 |
|
t = 0.0; |
543 |
|
if (t >= r->rot) /* clipped already */ |
544 |
|
return(0); |
545 |
|
/* advance position */ |
546 |
< |
for (i = 0; i < 3; i++) |
548 |
< |
curpos[i] += r->rdir[i]*t; |
546 |
> |
VSUM(curpos, curpos, r->rdir, t); |
547 |
|
|
548 |
|
if (!incube(scene, curpos)) /* non-intersecting ray */ |
549 |
|
return(0); |
634 |
|
ax = 2; |
635 |
|
} |
636 |
|
} |
637 |
< |
pos[0] += r->rdir[0]*t; |
640 |
< |
pos[1] += r->rdir[1]*t; |
641 |
< |
pos[2] += r->rdir[2]*t; |
637 |
> |
VSUM(pos, pos, r->rdir, t); |
638 |
|
return(ax); |
639 |
|
} |
640 |
|
|