| 1 |
< |
/* Copyright (c) 1990 Regents of the University of California */ |
| 1 |
> |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
|
|
| 3 |
|
#ifndef lint |
| 4 |
|
static char SCCSid[] = "$SunId$ LBL"; |
| 16 |
|
|
| 17 |
|
#include "otypes.h" |
| 18 |
|
|
| 19 |
+ |
#include "otspecial.h" |
| 20 |
+ |
|
| 21 |
|
extern CUBE thescene; /* our scene */ |
| 22 |
|
extern int maxdepth; /* maximum recursion depth */ |
| 23 |
|
extern double minweight; /* minimum ray weight */ |
| 24 |
+ |
extern int do_irrad; /* compute irradiance? */ |
| 25 |
|
|
| 26 |
|
long nrays = 0L; /* number of rays traced */ |
| 27 |
|
|
| 28 |
+ |
static double Lambfa[5] = {PI, PI, PI, 0.0, 0.0}; |
| 29 |
+ |
OBJREC Lamb = { |
| 30 |
+ |
OVOID, MAT_PLASTIC, "Lambertian", |
| 31 |
+ |
{0, 5, NULL, Lambfa}, NULL, -1, |
| 32 |
+ |
}; /* a Lambertian surface */ |
| 33 |
+ |
|
| 34 |
|
#define MAXLOOP 128 /* modifier loop detection */ |
| 35 |
|
|
| 36 |
|
#define RAYHIT (-1) /* return value for intercepted ray */ |
| 65 |
|
r->newcset = r->clipset; |
| 66 |
|
r->ro = NULL; |
| 67 |
|
r->rot = FHUGE; |
| 59 |
– |
r->rox = NULL; |
| 68 |
|
r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
| 69 |
|
setcolor(r->pcol, 1.0, 1.0, 1.0); |
| 70 |
|
setcolor(r->rcol, 0.0, 0.0, 0.0); |
| 78 |
|
{ |
| 79 |
|
extern int (*trace)(); |
| 80 |
|
|
| 81 |
< |
if (localhit(r, &thescene) || sourcehit(r)) |
| 81 |
> |
if (localhit(r, &thescene)) |
| 82 |
|
raycont(r); |
| 83 |
+ |
else if (sourcehit(r)) |
| 84 |
+ |
rayshade(r, r->ro->omod); |
| 85 |
|
|
| 86 |
|
if (trace != NULL) |
| 87 |
|
(*trace)(r); /* trace execution */ |
| 129 |
|
error(USER, errmsg); |
| 130 |
|
} |
| 131 |
|
******/ |
| 132 |
+ |
/* hack for irradiance calculation */ |
| 133 |
+ |
if (do_irrad && !(r->crtype & ~(PRIMARY|TRANS))) { |
| 134 |
+ |
if (irr_ignore(m->otype)) { |
| 135 |
+ |
depth--; |
| 136 |
+ |
raytrans(r); |
| 137 |
+ |
return; |
| 138 |
+ |
} |
| 139 |
+ |
if (!islight(m->otype)) |
| 140 |
+ |
m = &Lamb; |
| 141 |
+ |
} |
| 142 |
|
(*ofun[m->otype].funp)(m, r); /* execute function */ |
| 143 |
|
m->lastrno = r->rno; |
| 144 |
|
if (ismaterial(m->otype)) { /* materials call raytexture */ |
| 273 |
|
if (rp->rox == &xp->xf) { /* xp in use */ |
| 274 |
|
xp = xp->next; /* move to next */ |
| 275 |
|
if (xp == xflast) { /* need new one */ |
| 276 |
< |
xp = (struct xfn *)malloc(sizeof(struct xfn)); |
| 276 |
> |
xp = (struct xfn *)bmalloc(sizeof(struct xfn)); |
| 277 |
|
if (xp == NULL) |
| 278 |
|
error(SYSTEM, |
| 279 |
|
"out of memory in newrayxf"); |
| 322 |
|
else if (r->rdir[i] < -FTINY) |
| 323 |
|
sflags |= 0x10 << i; |
| 324 |
|
} |
| 325 |
+ |
if (sflags == 0) |
| 326 |
+ |
error(CONSISTENCY, "zero ray direction in localhit"); |
| 327 |
|
t = 0.0; |
| 328 |
|
if (!incube(scene, curpos)) { |
| 329 |
|
/* find distance to entry */ |
