| 2 |
|
/* |
| 3 |
|
* bsdf_t.h |
| 4 |
|
* |
| 5 |
< |
* Support for variable-resolution BSDF trees |
| 5 |
> |
* Support for variable-resolution BSDF trees. |
| 6 |
> |
* Assumes "bsdf.h" already included. |
| 7 |
> |
* Include after "ezxml.h" for SDloadTre() declaration. |
| 8 |
|
* |
| 9 |
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* Created by Greg Ward on 2/2/11. |
| 10 |
|
* |
| 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 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 */ |
| 45 |
+ |
double clim[2][2]; /* input coordinate limits */ |
| 46 |
+ |
double max_psa; /* maximum projected solid angle */ |
| 47 |
+ |
short sidef; /* which side(s) to use */ |
| 48 |
+ |
short isodist; /* isotropic distribution? */ |
| 49 |
+ |
int calen; /* cumulative array length */ |
| 50 |
+ |
struct { |
| 51 |
+ |
unsigned hndx; /* hilbert index */ |
| 52 |
+ |
unsigned cuml; /* cumulative value */ |
| 53 |
+ |
} carr[1]; /* cumulative array (extends struct) */ |
| 54 |
+ |
} SDTreCDst; |
| 55 |
+ |
|
| 56 |
+ |
#ifdef _EZXML_H |
| 57 |
|
/* Load a variable-resolution BSDF tree from an open XML file */ |
| 58 |
< |
extern SDError SDloadTre(SDData *sd, ezxml_t fl); |
| 58 |
> |
extern SDError SDloadTre(SDData *sd, ezxml_t wtl); |
| 59 |
> |
#endif |
| 60 |
|
|
| 61 |
|
/* Our matrix handling routines */ |
| 62 |
< |
extern const SDFunc SDhandleTre; |
| 62 |
> |
extern SDFunc SDhandleTre; |
| 63 |
|
|
| 64 |
|
#ifdef __cplusplus |
| 65 |
|
} |
