| 29 |
|
} u; /* subtrees or values (extends struct) */ |
| 30 |
|
} SDNode; |
| 31 |
|
|
| 32 |
+ |
#define SD_UFRONT 0x1 /* flag for BSDF uses front side */ |
| 33 |
+ |
#define SD_UBACK 0x2 /* flag for BSDF uses back side */ |
| 34 |
+ |
#define SD_XMIT 0x3 /* combine the two for transmission */ |
| 35 |
+ |
|
| 36 |
|
/* Variable-resolution BSDF holder */ |
| 37 |
|
typedef struct { |
| 38 |
< |
int isxmit; /* transmitted component? */ |
| 38 |
> |
int sidef; /* transmitted component? */ |
| 39 |
|
SDNode *st; /* BSDF tree */ |
| 40 |
|
} SDTre; |
| 41 |
|
|
| 42 |
|
/* Holder for cumulative distribution (sum of BSDF * projSA) */ |
| 43 |
< |
typedef struct { |
| 44 |
< |
SD_CDIST_BASE; /* base fields; must come first */ |
| 43 |
> |
typedef struct SDTreCDst_s { |
| 44 |
> |
/* base fields; must come first */ |
| 45 |
> |
SD_CDIST_BASE(SDTreCDst_s); |
| 46 |
|
double clim[2][2]; /* input coordinate limits */ |
| 47 |
|
double max_psa; /* maximum projected solid angle */ |
| 48 |
< |
int isxmit; /* transmitted component? */ |
| 48 |
> |
short sidef; /* which side(s) to use */ |
| 49 |
> |
short isodist; /* isotropic distribution? */ |
| 50 |
|
int calen; /* cumulative array length */ |
| 51 |
|
struct { |
| 52 |
|
unsigned hndx; /* hilbert index */ |
