| 14 |
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extern "C" { |
| 15 |
|
#endif |
| 16 |
|
|
| 17 |
+ |
#ifndef RNUMBER |
| 18 |
+ |
#define RNUMBER unsigned long /* ray counter (>= sizeof pointer) */ |
| 19 |
+ |
#endif |
| 20 |
+ |
|
| 21 |
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#define MAXDIM 32 /* maximum number of dimensions */ |
| 22 |
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|
| 23 |
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/* ray type flags */ |
| 32 |
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/* reflected ray types */ |
| 33 |
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#define RAYREFL (SHADOW|REFLECTED|AMBIENT|SPECULAR) |
| 34 |
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|
| 35 |
+ |
/* Arrange so double's come first for optimal alignment */ |
| 36 |
+ |
/* Pointers and long's come second for 64-bit mode */ |
| 37 |
+ |
/* Int's next (unknown length), then floats, followed by short's & char's */ |
| 38 |
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typedef struct ray { |
| 32 |
– |
unsigned long rno; /* unique ray number */ |
| 33 |
– |
int rlvl; /* number of reflections for this ray */ |
| 34 |
– |
float rweight; /* cumulative weight of this ray */ |
| 35 |
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short rtype; /* ray type */ |
| 36 |
– |
short crtype; /* cumulative ray type */ |
| 37 |
– |
struct ray *parent; /* ray this originated from */ |
| 39 |
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FVECT rorg; /* origin of ray */ |
| 40 |
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FVECT rdir; /* normalized direction of ray */ |
| 41 |
< |
double rmax; /* maximum distance (aft clipping plane) */ |
| 42 |
< |
int rsrc; /* source we're aiming for */ |
| 41 |
> |
RREAL rmax; /* maximum distance (aft clipping plane) */ |
| 42 |
> |
RREAL rot; /* distance to object */ |
| 43 |
> |
FVECT rop; /* intersection point */ |
| 44 |
> |
FVECT ron; /* intersection surface normal */ |
| 45 |
> |
RREAL rod; /* -DOT(rdir, ron) */ |
| 46 |
> |
RREAL uv[2]; /* local coordinates */ |
| 47 |
> |
FVECT pert; /* surface normal perturbation */ |
| 48 |
> |
RREAL rt; /* returned effective ray length */ |
| 49 |
> |
const struct ray *parent; /* ray this originated from */ |
| 50 |
|
OBJECT *clipset; /* set of objects currently clipped */ |
| 51 |
|
OBJECT *newcset; /* next clipset, used for transmission */ |
| 52 |
< |
void (*revf)(struct ray *); /* evaluation function for this ray */ |
| 52 |
> |
void (*revf)(struct ray *); /* ray evaluation function */ |
| 53 |
|
void (*hitf)(OBJECT *, struct ray *); /* custom hit test */ |
| 46 |
– |
OBJECT robj; /* intersected object number */ |
| 54 |
|
OBJREC *ro; /* intersected object (one with material) */ |
| 48 |
– |
double rot; /* distance to object */ |
| 49 |
– |
FVECT rop; /* intersection point */ |
| 50 |
– |
FVECT ron; /* intersection surface normal */ |
| 51 |
– |
double rod; /* -DOT(rdir, ron) */ |
| 55 |
|
FULLXF *rox; /* object transformation */ |
| 56 |
< |
RREAL uv[2]; /* local coordinates */ |
| 57 |
< |
FVECT pert; /* surface normal perturbation */ |
| 56 |
> |
int *slights; /* list of lights to test for scattering */ |
| 57 |
> |
RNUMBER rno; /* unique ray number */ |
| 58 |
> |
int rlvl; /* number of reflections for this ray */ |
| 59 |
> |
int rsrc; /* source we're aiming for */ |
| 60 |
> |
float rweight; /* cumulative weight (for termination) */ |
| 61 |
> |
COLOR rcoef; /* contribution coefficient w.r.t. parent */ |
| 62 |
|
COLOR pcol; /* pattern color */ |
| 63 |
< |
COLOR rcol; /* returned ray value */ |
| 57 |
< |
double rt; /* returned effective ray length */ |
| 63 |
> |
COLOR rcol; /* returned radiance value */ |
| 64 |
|
COLOR cext; /* medium extinction coefficient */ |
| 65 |
|
COLOR albedo; /* medium scattering albedo */ |
| 66 |
|
float gecc; /* scattering eccentricity coefficient */ |
| 67 |
< |
int *slights; /* list of lights to test for scattering */ |
| 67 |
> |
OBJECT robj; /* intersected object number */ |
| 68 |
> |
short rtype; /* ray type */ |
| 69 |
> |
short crtype; /* cumulative ray type */ |
| 70 |
|
} RAY; |
| 71 |
|
|
| 72 |
|
#define rayvalue(r) (*(r)->revf)(r) |
| 76 |
|
extern CUBE thescene; /* our scene */ |
| 77 |
|
extern OBJECT nsceneobjs; /* number of objects in our scene */ |
| 78 |
|
|
| 79 |
< |
extern unsigned long raynum; /* next ray ID */ |
| 80 |
< |
extern unsigned long nrays; /* total rays traced so far */ |
| 79 |
> |
extern RNUMBER raynum; /* next ray ID */ |
| 80 |
> |
extern RNUMBER nrays; /* total rays traced so far */ |
| 81 |
|
|
| 82 |
|
extern OBJREC Lamb; /* a Lambertian surface */ |
| 83 |
|
extern OBJREC Aftplane; /* aft clipping object */ |
| 92 |
|
|
| 93 |
|
extern int do_irrad; /* compute irradiance? */ |
| 94 |
|
|
| 95 |
+ |
extern int rand_samp; /* pure Monte Carlo sampling? */ |
| 96 |
+ |
|
| 97 |
|
extern double dstrsrc; /* square source distribution */ |
| 98 |
|
extern double shadthresh; /* shadow threshold */ |
| 99 |
|
extern double shadcert; /* shadow testing certainty */ |
| 136 |
|
|
| 137 |
|
typedef struct { /* rendering parameter holder */ |
| 138 |
|
int do_irrad; |
| 139 |
+ |
int rand_samp; |
| 140 |
|
double dstrsrc; |
| 141 |
|
double shadthresh; |
| 142 |
|
double shadcert; |
| 195 |
|
extern void ray_defaults(RAYPARAMS *rp); |
| 196 |
|
/* defined in raypcalls.c */ |
| 197 |
|
extern void ray_pinit(char *otnm, int nproc); |
| 198 |
< |
extern void ray_psend(RAY *r); |
| 198 |
> |
extern int ray_psend(RAY *r); |
| 199 |
|
extern int ray_pqueue(RAY *r); |
| 200 |
|
extern int ray_presult(RAY *r, int poll); |
| 201 |
|
extern void ray_pdone(int freall); |
| 202 |
|
extern void ray_popen(int nadd); |
| 203 |
|
extern void ray_pclose(int nsub); |
| 204 |
+ |
/* defined in ray_fifo.c */ |
| 205 |
+ |
extern int (*ray_fifo_out)(RAY *r); |
| 206 |
+ |
extern int ray_fifo_in(RAY *r); |
| 207 |
+ |
extern int ray_fifo_flush(void); |
| 208 |
|
/* defined in raytrace.c */ |
| 209 |
< |
extern int rayorigin(RAY *r, RAY *ro, int rt, double rw); |
| 209 |
> |
extern int rayorigin(RAY *r, int rt, const RAY *ro, const COLOR rc); |
| 210 |
|
extern void rayclear(RAY *r); |
| 211 |
|
extern void raytrace(RAY *r); |
| 212 |
|
extern void rayhit(OBJECT *oset, RAY *r); |
| 216 |
|
extern void rayparticipate(RAY *r); |
| 217 |
|
extern void raytexture(RAY *r, OBJECT mod); |
| 218 |
|
extern int raymixture(RAY *r, OBJECT fore, OBJECT back, double coef); |
| 219 |
< |
extern double raydist(RAY *r, int flags); |
| 219 |
> |
extern void raycontrib(RREAL rc[3], const RAY *r, int flags); |
| 220 |
> |
extern double raydist(const RAY *r, int flags); |
| 221 |
|
extern double raynormal(FVECT norm, RAY *r); |
| 222 |
|
extern void newrayxf(RAY *r); |
| 223 |
|
extern void flipsurface(RAY *r); |
| 232 |
|
/* defined in rt/initotypes.c */ |
| 233 |
|
extern void initotypes(void); |
| 234 |
|
/* module main procedures */ |
| 235 |
< |
extern void rtrace(char *fname); |
| 236 |
< |
extern char * formstr(int f); |
| 235 |
> |
extern void rtrace(char *fname, int nproc); |
| 236 |
> |
extern char *formstr(int f); |
| 237 |
|
extern void rview(void); |
| 238 |
|
extern void rpict(int seq, char *pout, char *zout, char *prvr); |
| 239 |
|
|
| 240 |
+ |
#ifdef __FAST_MATH__ |
| 241 |
+ |
#define checknorm(vn) (void)normalize(vn) |
| 242 |
+ |
#else |
| 243 |
+ |
#define checknorm(vn) |
| 244 |
+ |
#endif |
| 245 |
|
|
| 246 |
|
#ifdef __cplusplus |
| 247 |
|
} |
