1 |
+ |
/* RCSid $Id$ */ |
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 |
|
* 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 |
|
} |