| 19 |
|
unsigned long latick; /* last accessed tick */ |
| 20 |
|
float pos[3]; /* position in space */ |
| 21 |
|
float dir[3]; /* normal direction */ |
| 22 |
< |
int lvl; /* recursion level of parent ray */ |
| 22 |
> |
int lvl; /* recursion level of parent ray */ |
| 23 |
|
float weight; /* weight of parent ray */ |
| 24 |
|
float rad; /* validity radius */ |
| 25 |
|
COLOR val; /* computed ambient value */ |
| 35 |
|
|
| 36 |
|
typedef struct { |
| 37 |
|
short t, p; /* theta, phi indices */ |
| 38 |
< |
COLOR v; /* value sum */ |
| 38 |
> |
COLOR v; /* division sum (partial) */ |
| 39 |
|
float r; /* 1/distance sum */ |
| 40 |
|
float k; /* variance for this division */ |
| 41 |
|
int n; /* number of subsamples */ |
| 42 |
|
} AMBSAMP; /* ambient sample division */ |
| 43 |
|
|
| 44 |
|
typedef struct { |
| 45 |
+ |
COLOR acoef; /* division contribution coefficient */ |
| 46 |
|
FVECT ux, uy, uz; /* x, y and z axis directions */ |
| 47 |
|
short nt, np; /* number of theta and phi directions */ |
| 48 |
+ |
int ns; /* number of super-samples */ |
| 49 |
|
} AMBHEMI; /* ambient sample hemisphere */ |
| 50 |
|
|
| 51 |
|
extern double maxarad; /* maximum ambient radius */ |
| 59 |
|
#define AMBMAGIC 557 /* magic number for ambient value files */ |
| 60 |
|
#define AMBFMT "Radiance_ambval" /* format id string */ |
| 61 |
|
|
| 60 |
– |
/* defined in ambcomp.c */ |
| 61 |
– |
extern int divsample(AMBSAMP *dp, AMBHEMI *h, RAY *r); |
| 62 |
– |
extern double doambient(COLOR acol, RAY *r, double wt, FVECT pg, FVECT dg); |
| 63 |
– |
extern void inithemi(AMBHEMI *hp, RAY *r, double wt); |
| 64 |
– |
extern void comperrs(AMBSAMP *da, AMBHEMI *hp); |
| 65 |
– |
extern void posgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp); |
| 66 |
– |
extern void dirgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp); |
| 62 |
|
/* defined in ambient.c */ |
| 63 |
|
extern void setambres(int ar); |
| 64 |
|
extern void setambacc(double newa); |
| 65 |
|
extern void setambient(void); |
| 66 |
+ |
extern void multambient(COLOR aval, RAY *r, FVECT nrm); |
| 67 |
|
extern void ambdone(void); |
| 68 |
|
extern void ambnotify(OBJECT obj); |
| 73 |
– |
extern void ambient(COLOR acol, RAY *r, FVECT nrm); |
| 69 |
|
extern double sumambient(COLOR acol, RAY *r, FVECT rn, int al, |
| 70 |
|
AMBTREE *at, FVECT c0, double s); |
| 71 |
|
extern double makeambient(COLOR acol, RAY *r, FVECT rn, int al); |
| 72 |
|
extern void extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv); |
| 73 |
|
extern int ambsync(void); |
| 74 |
+ |
/* defined in ambcomp.c */ |
| 75 |
+ |
extern double doambient(COLOR acol, RAY *r, double wt, |
| 76 |
+ |
FVECT pg, FVECT dg); |
| 77 |
+ |
extern void inithemi(AMBHEMI *hp, COLOR ac, RAY *r, double wt); |
| 78 |
+ |
extern int divsample(AMBSAMP *dp, AMBHEMI *h, RAY *r); |
| 79 |
+ |
extern void comperrs(AMBSAMP *da, AMBHEMI *hp); |
| 80 |
+ |
extern void posgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp); |
| 81 |
+ |
extern void dirgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp); |
| 82 |
|
/* defined in ambio.c */ |
| 83 |
|
extern void putambmagic(FILE *fp); |
| 84 |
|
extern int hasambmagic(FILE *fp); |
