22 |
|
|
23 |
|
long nrays = 0L; /* number of rays traced */ |
24 |
|
|
25 |
< |
#define MAXLOOP 32 /* modifier loop detection */ |
25 |
> |
#define MAXLOOP 1024 /* modifier loop detection */ |
26 |
|
|
27 |
|
#define RAYHIT (-1) /* return value for intercepted ray */ |
28 |
|
|
68 |
|
{ |
69 |
|
extern int (*trace)(); |
70 |
|
|
71 |
< |
if (localhit(r, &thescene)) |
72 |
< |
if (r->clipset != NULL && inset(r->clipset, r->ro->omod)) |
73 |
< |
raytrans(r); /* object is clipped */ |
74 |
< |
else |
75 |
< |
rayshade(r, r->ro->omod); |
76 |
< |
else if (sourcehit(r)) |
71 |
> |
if (localhit(r, &thescene) || sourcehit(r)) |
72 |
|
rayshade(r, r->ro->omod); |
73 |
|
|
74 |
|
if (trace != NULL) |
95 |
|
{ |
96 |
|
static int depth = 0; |
97 |
|
register OBJREC *m; |
98 |
+ |
/* check for clipped surface */ |
99 |
+ |
if (r->clipset != NULL && r->rot < FHUGE && |
100 |
+ |
inset(r->clipset, mod)) { |
101 |
+ |
raytrans(r); |
102 |
+ |
return; |
103 |
+ |
} |
104 |
|
/* check for infinite loop */ |
105 |
|
if (depth++ >= MAXLOOP) |
106 |
< |
objerror(r->ro, USER, "material loop"); |
106 |
> |
objerror(r->ro, USER, "possible modifier loop"); |
107 |
|
for ( ; mod != OVOID; mod = m->omod) { |
108 |
|
m = objptr(mod); |
109 |
+ |
/****** unnecessary test since modifier() is always called |
110 |
|
if (!ismodifier(m->otype)) { |
111 |
|
sprintf(errmsg, "illegal modifier \"%s\"", m->oname); |
112 |
|
error(USER, errmsg); |
113 |
|
} |
114 |
+ |
******/ |
115 |
|
(*ofun[m->otype].funp)(m, r); /* execute function */ |
116 |
|
m->lastrno = r->rno; |
117 |
|
if (ismaterial(m->otype)) { /* materials call raytexture */ |