| 50 |
|
} |
| 51 |
|
|
| 52 |
|
|
| 53 |
< |
static void /* initialize occlusion cache */ |
| 53 |
> |
void /* initialize occlusion cache */ |
| 54 |
|
initobscache(int sn) |
| 55 |
|
{ |
| 56 |
|
register SRCREC *srcp = &source[sn]; |
| 60 |
|
int i, j, k; |
| 61 |
|
int ax, ax1, ax2; |
| 62 |
|
|
| 63 |
+ |
if (srcp->sflags & (SSKIP|SPROX|SSPOT|SVIRTUAL)) |
| 64 |
+ |
return; /* don't cache these */ |
| 65 |
|
if (srcp->sflags & SDISTANT) |
| 66 |
|
cachelen = 4*SHADCACHE*SHADCACHE; |
| 67 |
|
else if (srcp->sflags & SFLAT) |
| 69 |
|
else /* spherical distribution */ |
| 70 |
|
cachelen = SHADCACHE*SHADCACHE*6; |
| 71 |
|
/* allocate cache */ |
| 70 |
– |
DCHECK(srcp->obscache != NULL, |
| 71 |
– |
CONSISTENCY, "initobscache() called twice"); |
| 72 |
|
srcp->obscache = (OBSCACHE *)malloc(sizeof(OBSCACHE) + |
| 73 |
|
sizeof(OBJECT)*(cachelen-1)); |
| 74 |
|
if (srcp->obscache == NULL) |
| 309 |
|
if (obs == OVOID) |
| 310 |
|
return(0); |
| 311 |
|
op = objptr(obs); /* check for intersection */ |
| 312 |
< |
return((*ofun[op->otype].funp)(op, r)); |
| 312 |
> |
if (!(*ofun[op->otype].funp)(op, r)) |
| 313 |
> |
return(0); |
| 314 |
> |
op = source[r->rsrc].so; /* check source really obstructed */ |
| 315 |
> |
if ((*ofun[op->otype].funp)(op, r)) { |
| 316 |
> |
rayclear(r); /* actually, source in front! */ |
| 317 |
> |
return(0); |
| 318 |
> |
} |
| 319 |
> |
return(1); /* source truly blocked */ |
| 320 |
|
} |
| 321 |
|
|
| 322 |
|
|
