| 14 |
|
* in the +Z direction, towards the interior of the space rather |
| 15 |
|
* than the exterior. |
| 16 |
|
* |
| 17 |
< |
* BSDF vectors always oriented away from surface, even when "incident." |
| 17 |
> |
* BSDF incident & exiting vectors are always oriented away from surface. |
| 18 |
|
* |
| 19 |
|
* Created by Greg Ward on 1/10/11. |
| 20 |
|
* |
| 30 |
|
extern "C" { |
| 31 |
|
#endif |
| 32 |
|
|
| 33 |
+ |
#ifdef _WIN32 |
| 34 |
+ |
#define strcasecmp stricmp |
| 35 |
+ |
#endif |
| 36 |
+ |
|
| 37 |
|
#define SDnameLn 128 /* maximum BSDF name length */ |
| 38 |
|
#define SDmaxCh 3 /* maximum # spectral channels */ |
| 39 |
|
|
| 71 |
|
} SDValue; |
| 72 |
|
|
| 73 |
|
/* Cached, encoded, cumulative distribution for one incident (solid) angle */ |
| 74 |
< |
#define SD_CDIST_BASE double cTotal; \ |
| 75 |
< |
struct SDCDst_s *next |
| 74 |
> |
#define SD_CDIST_BASE(styp) double cTotal; \ |
| 75 |
> |
struct styp *next |
| 76 |
|
typedef struct SDCDst_s { |
| 77 |
< |
SD_CDIST_BASE; /* base fields first */ |
| 77 |
> |
SD_CDIST_BASE(SDCDst_s); /* base fields first */ |
| 78 |
|
/* ...encoded distribution extends struct */ |
| 79 |
|
} SDCDst; |
| 80 |
|
|
| 81 |
+ |
extern const SDCDst SDemptyCD; /* empty distribution */ |
| 82 |
+ |
|
| 83 |
|
/* Forward declaration of BSDF component */ |
| 84 |
|
typedef struct SDComp_s SDComponent; |
| 85 |
|
|
| 119 |
|
|
| 120 |
|
/* Loaded BSDF data */ |
| 121 |
|
typedef struct { |
| 122 |
< |
char name[SDnameLn]; /* BSDF name (derived from file) */ |
| 122 |
> |
char name[SDnameLn]; /* BSDF name (usu. derived from file) */ |
| 123 |
> |
char matn[SDnameLn]; /* material name */ |
| 124 |
> |
char makr[SDnameLn]; /* manufacturer */ |
| 125 |
|
char *mgf; /* geometric description (if any) */ |
| 126 |
|
float dim[3]; /* width, height, thickness (meters) */ |
| 127 |
|
SDValue rLambFront; /* diffuse front reflectance */ |
| 128 |
|
SDValue rLambBack; /* diffuse rear reflectance */ |
| 129 |
|
SDValue tLamb; /* diffuse transmission */ |
| 130 |
< |
SDSpectralDF *rf, *rb, *tf; /* non-diffuse BSDF components */ |
| 130 |
> |
SDSpectralDF *rf, *rb; /* non-diffuse BRDF components */ |
| 131 |
> |
SDSpectralDF *tf, *tb; /* non-diffuse BTDF components */ |
| 132 |
|
} SDData; |
| 133 |
|
|
| 134 |
|
/* List of loaded BSDFs */ |
| 139 |
|
*next; |
| 140 |
|
} *SDcacheList; /* Global BSDF cache */ |
| 141 |
|
|
| 142 |
< |
/* BSDF cache retention preference */ |
| 143 |
< |
#define SDretainNone 0 /* free unreferenced data (default) */ |
| 144 |
< |
#define SDretainBSDFs 1 /* keep loaded BSDFs in cache */ |
| 142 |
> |
/* BSDF cache retention policies */ |
| 143 |
> |
#define SDretainNone 0 /* free unreferenced BSDF data */ |
| 144 |
> |
#define SDretainBSDFs 1 /* keep loaded BSDFs in memory */ |
| 145 |
|
#define SDretainAll 2 /* also keep cumulative cache data */ |
| 146 |
|
|
| 147 |
< |
extern int SDretainSet; /* set to SDretainNone by default */ |
| 147 |
> |
extern int SDretainSet; /* =SDretainNone by default */ |
| 148 |
|
|
| 149 |
|
/***************************************************************** |
| 150 |
|
* The following routines are less commonly used by applications. |
| 161 |
|
/* Allocate new spectral distribution function */ |
| 162 |
|
extern SDSpectralDF *SDnewSpectralDF(int nc); |
| 163 |
|
|
| 164 |
+ |
/* Add component(s) to spectral distribution function */ |
| 165 |
+ |
extern SDSpectralDF *SDaddComponent(SDSpectralDF *odf, int nadd); |
| 166 |
+ |
|
| 167 |
|
/* Free a spectral distribution function */ |
| 168 |
|
extern void SDfreeSpectralDF(SDSpectralDF *df); |
| 169 |
|
|
| 201 |
|
*/ |
| 202 |
|
|
| 203 |
|
/* Get BSDF from cache (or load and cache it on first call) */ |
| 204 |
< |
/* Report any problems to stderr and return NULL on failure */ |
| 204 |
> |
/* Report any problems to stderr (in English), return NULL on failure */ |
| 205 |
|
extern const SDData *SDcacheFile(const char *fname); |
| 206 |
|
|
| 207 |
< |
/* Free a BSDF from our cache (clear all if NULL) */ |
| 207 |
> |
/* Free a BSDF from our cache (clear all if sd==NULL) */ |
| 208 |
|
extern void SDfreeCache(const SDData *sd); |
| 209 |
|
|
| 210 |
|
/* Query projected solid angle resolution for non-diffuse BSDF direction(s) */ |
| 229 |
|
* Directions may be passed unnormalized to these routines. |
| 230 |
|
*/ |
| 231 |
|
|
| 232 |
< |
/* Compute World->BSDF transform from surface normal and up (Y) vector */ |
| 232 |
> |
/* Compute World->BSDF transform from surface normal and BSDF up vector */ |
| 233 |
|
extern SDError SDcompXform(RREAL vMtx[3][3], const FVECT sNrm, |
| 234 |
|
const FVECT uVec); |
| 235 |
|
|
| 240 |
|
extern SDError SDmapDir(FVECT resVec, RREAL vMtx[3][3], |
| 241 |
|
const FVECT inpVec); |
| 242 |
|
|
| 243 |
< |
/* System-specific BSDF loading routine (not part of our library) */ |
| 243 |
> |
/* Application-specific BSDF loading routine (not part of our library) */ |
| 244 |
|
extern SDData *loadBSDF(char *name); |
| 245 |
|
|
| 246 |
< |
/* System-specific BSDF error translator (not part of our library) */ |
| 246 |
> |
/* Application-specific BSDF error translator (not part of our library) */ |
| 247 |
|
extern char *transSDError(SDError ec); |
| 248 |
|
|
| 249 |
|
/*################################################################*/ |
