| 31 |
|
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 */ |
| 34 |
> |
float rweight; /* cumulative weight (for termination) */ |
| 35 |
> |
COLOR rcoef; /* contribution coefficient w.r.t. parent */ |
| 36 |
|
short rtype; /* ray type */ |
| 37 |
|
short crtype; /* cumulative ray type */ |
| 38 |
< |
struct ray *parent; /* ray this originated from */ |
| 38 |
> |
const struct ray *parent; /* ray this originated from */ |
| 39 |
|
FVECT rorg; /* origin of ray */ |
| 40 |
|
FVECT rdir; /* normalized direction of ray */ |
| 41 |
|
double rmax; /* maximum distance (aft clipping plane) */ |
| 42 |
|
int rsrc; /* source we're aiming for */ |
| 43 |
|
OBJECT *clipset; /* set of objects currently clipped */ |
| 44 |
|
OBJECT *newcset; /* next clipset, used for transmission */ |
| 45 |
< |
void (*revf)(struct ray *); /* evaluation function for this ray */ |
| 45 |
> |
void (*revf)(struct ray *); /* ray evaluation function */ |
| 46 |
|
void (*hitf)(OBJECT *, struct ray *); /* custom hit test */ |
| 47 |
|
OBJECT robj; /* intersected object number */ |
| 48 |
|
OBJREC *ro; /* intersected object (one with material) */ |
| 54 |
|
RREAL uv[2]; /* local coordinates */ |
| 55 |
|
FVECT pert; /* surface normal perturbation */ |
| 56 |
|
COLOR pcol; /* pattern color */ |
| 57 |
< |
COLOR rcol; /* returned ray value */ |
| 57 |
> |
COLOR rcol; /* returned radiance value */ |
| 58 |
|
double rt; /* returned effective ray length */ |
| 59 |
|
COLOR cext; /* medium extinction coefficient */ |
| 60 |
|
COLOR albedo; /* medium scattering albedo */ |
| 192 |
|
extern void ray_popen(int nadd); |
| 193 |
|
extern void ray_pclose(int nsub); |
| 194 |
|
/* defined in raytrace.c */ |
| 195 |
< |
extern int rayorigin(RAY *r, RAY *ro, int rt, double rw); |
| 195 |
> |
extern int rayorigin(RAY *r, int rt, const RAY *ro, const COLOR rc); |
| 196 |
|
extern void rayclear(RAY *r); |
| 197 |
|
extern void raytrace(RAY *r); |
| 198 |
|
extern void rayhit(OBJECT *oset, RAY *r); |
| 202 |
|
extern void rayparticipate(RAY *r); |
| 203 |
|
extern void raytexture(RAY *r, OBJECT mod); |
| 204 |
|
extern int raymixture(RAY *r, OBJECT fore, OBJECT back, double coef); |
| 205 |
< |
extern double raydist(RAY *r, int flags); |
| 205 |
> |
extern void raycontrib(COLOR rc, const RAY *r, int flags); |
| 206 |
> |
extern double raydist(const RAY *r, int flags); |
| 207 |
|
extern double raynormal(FVECT norm, RAY *r); |
| 208 |
|
extern void newrayxf(RAY *r); |
| 209 |
|
extern void flipsurface(RAY *r); |
