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); |