| 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 */ |
| 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 */ |
| 118 |
|
{ |
| 119 |
|
static int depth = 0; |
| 120 |
|
register OBJREC *m; |
| 121 |
+ |
/* check for irradiance calc. */ |
| 122 |
+ |
if (do_irrad && !(r->crtype & ~(PRIMARY|TRANS))) { |
| 123 |
+ |
if (irr_ignore(objptr(mod)->otype)) |
| 124 |
+ |
raytrans(r); |
| 125 |
+ |
else |
| 126 |
+ |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
| 127 |
+ |
return; |
| 128 |
+ |
} |
| 129 |
|
/* check for infinite loop */ |
| 130 |
|
if (depth++ >= MAXLOOP) |
| 131 |
|
objerror(r->ro, USER, "possible modifier loop"); |
