| 28 |
|
/* reflected ray types */ |
| 29 |
|
#define RAYREFL (SHADOW|REFLECTED|AMBIENT|SPECULAR) |
| 30 |
|
|
| 31 |
+ |
/* Arrange so double's come first for optimal alignment */ |
| 32 |
+ |
/* Pointers and long's come second for 64-bit mode */ |
| 33 |
+ |
/* Int's next (unknown length), then floats, followed by short's & char's */ |
| 34 |
|
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 |
– |
short rtype; /* ray type */ |
| 36 |
– |
short crtype; /* cumulative ray type */ |
| 37 |
– |
struct ray *parent; /* ray this originated from */ |
| 35 |
|
FVECT rorg; /* origin of ray */ |
| 36 |
|
FVECT rdir; /* normalized direction of ray */ |
| 37 |
< |
double rmax; /* maximum distance (aft clipping plane) */ |
| 38 |
< |
int rsrc; /* source we're aiming for */ |
| 37 |
> |
RREAL rmax; /* maximum distance (aft clipping plane) */ |
| 38 |
> |
RREAL rot; /* distance to object */ |
| 39 |
> |
FVECT rop; /* intersection point */ |
| 40 |
> |
FVECT ron; /* intersection surface normal */ |
| 41 |
> |
RREAL rod; /* -DOT(rdir, ron) */ |
| 42 |
> |
RREAL uv[2]; /* local coordinates */ |
| 43 |
> |
FVECT pert; /* surface normal perturbation */ |
| 44 |
> |
RREAL rt; /* returned effective ray length */ |
| 45 |
> |
const struct ray *parent; /* ray this originated from */ |
| 46 |
|
OBJECT *clipset; /* set of objects currently clipped */ |
| 47 |
|
OBJECT *newcset; /* next clipset, used for transmission */ |
| 48 |
< |
void (*revf)(struct ray *); /* evaluation function for this ray */ |
| 48 |
> |
void (*revf)(struct ray *); /* ray evaluation function */ |
| 49 |
|
void (*hitf)(OBJECT *, struct ray *); /* custom hit test */ |
| 46 |
– |
OBJECT robj; /* intersected object number */ |
| 50 |
|
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) */ |
| 51 |
|
FULLXF *rox; /* object transformation */ |
| 52 |
< |
RREAL uv[2]; /* local coordinates */ |
| 53 |
< |
FVECT pert; /* surface normal perturbation */ |
| 52 |
> |
int *slights; /* list of lights to test for scattering */ |
| 53 |
> |
unsigned long rno; /* unique ray number */ |
| 54 |
> |
int rlvl; /* number of reflections for this ray */ |
| 55 |
> |
int rsrc; /* source we're aiming for */ |
| 56 |
> |
float rweight; /* cumulative weight (for termination) */ |
| 57 |
> |
COLOR rcoef; /* contribution coefficient w.r.t. parent */ |
| 58 |
|
COLOR pcol; /* pattern color */ |
| 59 |
< |
COLOR rcol; /* returned ray value */ |
| 57 |
< |
double rt; /* returned effective ray length */ |
| 59 |
> |
COLOR rcol; /* returned radiance value */ |
| 60 |
|
COLOR cext; /* medium extinction coefficient */ |
| 61 |
|
COLOR albedo; /* medium scattering albedo */ |
| 62 |
|
float gecc; /* scattering eccentricity coefficient */ |
| 63 |
< |
int *slights; /* list of lights to test for scattering */ |
| 63 |
> |
OBJECT robj; /* intersected object number */ |
| 64 |
> |
short rtype; /* ray type */ |
| 65 |
> |
short crtype; /* cumulative ray type */ |
| 66 |
|
} RAY; |
| 67 |
|
|
| 68 |
|
#define rayvalue(r) (*(r)->revf)(r) |
| 88 |
|
|
| 89 |
|
extern int do_irrad; /* compute irradiance? */ |
| 90 |
|
|
| 91 |
+ |
extern int rand_samp; /* pure Monte Carlo sampling? */ |
| 92 |
+ |
|
| 93 |
|
extern double dstrsrc; /* square source distribution */ |
| 94 |
|
extern double shadthresh; /* shadow threshold */ |
| 95 |
|
extern double shadcert; /* shadow testing certainty */ |
| 125 |
|
extern int ray_pnprocs; /* number of child processes */ |
| 126 |
|
extern int ray_pnidle; /* number of idle processes */ |
| 127 |
|
|
| 128 |
< |
#define AMBLLEN 128 /* max. ambient list length */ |
| 129 |
< |
#define AMBWORD 8 /* average word length */ |
| 128 |
> |
#ifndef AMBLLEN |
| 129 |
> |
#define AMBLLEN 512 /* max. ambient list length */ |
| 130 |
> |
#endif |
| 131 |
> |
#define AMBWORD 12 /* average word length */ |
| 132 |
|
|
| 133 |
|
typedef struct { /* rendering parameter holder */ |
| 134 |
|
int do_irrad; |
| 135 |
+ |
int rand_samp; |
| 136 |
|
double dstrsrc; |
| 137 |
|
double shadthresh; |
| 138 |
|
double shadcert; |
| 198 |
|
extern void ray_popen(int nadd); |
| 199 |
|
extern void ray_pclose(int nsub); |
| 200 |
|
/* defined in raytrace.c */ |
| 201 |
< |
extern int rayorigin(RAY *r, RAY *ro, int rt, double rw); |
| 201 |
> |
extern int rayorigin(RAY *r, int rt, const RAY *ro, const COLOR rc); |
| 202 |
|
extern void rayclear(RAY *r); |
| 203 |
|
extern void raytrace(RAY *r); |
| 204 |
|
extern void rayhit(OBJECT *oset, RAY *r); |
| 208 |
|
extern void rayparticipate(RAY *r); |
| 209 |
|
extern void raytexture(RAY *r, OBJECT mod); |
| 210 |
|
extern int raymixture(RAY *r, OBJECT fore, OBJECT back, double coef); |
| 211 |
< |
extern double raydist(RAY *r, int flags); |
| 211 |
> |
extern void raycontrib(double rc[3], const RAY *r, int flags); |
| 212 |
> |
extern double raydist(const RAY *r, int flags); |
| 213 |
|
extern double raynormal(FVECT norm, RAY *r); |
| 214 |
|
extern void newrayxf(RAY *r); |
| 215 |
|
extern void flipsurface(RAY *r); |
