1 |
< |
/* Copyright (c) 1994 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1995 Regents of the University of California */ |
2 |
|
|
3 |
|
#ifndef lint |
4 |
|
static char SCCSid[] = "$SunId$ LBL"; |
34 |
|
{0, 5, NULL, Lambfa}, NULL, |
35 |
|
}; /* a Lambertian surface */ |
36 |
|
|
37 |
+ |
OBJREC Aftplane; /* aft clipping plane object */ |
38 |
+ |
|
39 |
|
static int raymove(), checkset(), checkhit(); |
40 |
|
|
41 |
|
#define MAXLOOP 128 /* modifier loop detection */ |
61 |
|
r->rlvl++; |
62 |
|
r->rsrc = -1; |
63 |
|
r->clipset = ro->clipset; |
64 |
+ |
r->rmax = 0.0; |
65 |
|
} else { |
66 |
|
r->rsrc = ro->rsrc; |
67 |
|
r->clipset = ro->newcset; |
68 |
+ |
r->rmax = ro->rmax <= FTINY ? 0.0 : ro->rmax - ro->rot; |
69 |
|
} |
70 |
|
r->revf = ro->revf; |
71 |
|
r->rweight = ro->rweight * rw; |
99 |
|
|
100 |
|
if (localhit(r, &thescene)) |
101 |
|
gotmat = raycont(r); |
102 |
< |
else if (sourcehit(r)) |
102 |
> |
else if (r->ro == &Aftplane) { |
103 |
> |
r->ro = NULL; |
104 |
> |
r->rot = FHUGE; |
105 |
> |
} else if (sourcehit(r)) |
106 |
|
gotmat = rayshade(r, r->ro->omod); |
107 |
|
|
108 |
|
if (r->ro != NULL && !gotmat) |
194 |
|
error(USER, errmsg); |
195 |
|
} |
196 |
|
******/ |
197 |
< |
if ((*ofun[m->otype].funp)(m, r)) |
198 |
< |
objerror(r->ro, USER, "conflicting materials"); |
197 |
> |
if ((*ofun[m->otype].funp)(m, r)) { |
198 |
> |
sprintf(errmsg, "conflicting material \"%s\"", |
199 |
> |
m->oname); |
200 |
> |
objerror(r->ro, USER, errmsg); |
201 |
> |
} |
202 |
|
} |
203 |
|
depth--; /* end here */ |
204 |
|
} |
259 |
|
|
260 |
|
|
261 |
|
double |
262 |
+ |
raydist(r, flags) /* compute (cumulative) ray distance */ |
263 |
+ |
register RAY *r; |
264 |
+ |
register int flags; |
265 |
+ |
{ |
266 |
+ |
double sum = 0.0; |
267 |
+ |
|
268 |
+ |
while (r != NULL && r->crtype&flags) { |
269 |
+ |
sum += r->rot; |
270 |
+ |
r = r->parent; |
271 |
+ |
} |
272 |
+ |
return(sum); |
273 |
+ |
} |
274 |
+ |
|
275 |
+ |
|
276 |
+ |
double |
277 |
|
raynormal(norm, r) /* compute perturbed normal for ray */ |
278 |
|
FVECT norm; |
279 |
|
register RAY *r; |
378 |
|
} |
379 |
|
if (sflags == 0) |
380 |
|
error(CONSISTENCY, "zero ray direction in localhit"); |
381 |
+ |
/* start off assuming nothing hit */ |
382 |
+ |
if (r->rmax > FTINY) { /* except aft plane if one */ |
383 |
+ |
r->ro = &Aftplane; |
384 |
+ |
r->rot = r->rmax; |
385 |
+ |
for (i = 0; i < 3; i++) |
386 |
+ |
r->rop[i] = r->rorg[i] + r->rot*r->rdir[i]; |
387 |
+ |
} |
388 |
+ |
/* find global cube entrance point */ |
389 |
|
t = 0.0; |
390 |
|
if (!incube(scene, curpos)) { |
391 |
|
/* find distance to entry */ |
403 |
|
t = dt; /* farthest face is the one */ |
404 |
|
} |
405 |
|
t += FTINY; /* fudge to get inside cube */ |
406 |
+ |
if (t >= r->rot) /* clipped already */ |
407 |
+ |
return(0); |
408 |
|
/* advance position */ |
409 |
|
for (i = 0; i < 3; i++) |
410 |
|
curpos[i] += r->rdir[i]*t; |
413 |
|
return(0); |
414 |
|
} |
415 |
|
cxset[0] = 0; |
416 |
< |
return(raymove(curpos, cxset, sflags, r, scene) == RAYHIT); |
416 |
> |
raymove(curpos, cxset, sflags, r, scene); |
417 |
> |
return(r->ro != NULL & r->ro != &Aftplane); |
418 |
|
} |
419 |
|
|
420 |
|
|
469 |
|
} |
470 |
|
/*NOTREACHED*/ |
471 |
|
} |
472 |
< |
if (isfull(cu->cutree) && checkhit(r, cu, cxs)) |
472 |
> |
if (isfull(cu->cutree)) { |
473 |
> |
if (checkhit(r, cu, cxs)) |
474 |
> |
return(RAYHIT); |
475 |
> |
} else if (r->ro == &Aftplane && incube(cu, r->rop)) |
476 |
|
return(RAYHIT); |
477 |
|
/* advance to next cube */ |
478 |
|
if (dirf&0x11) { |