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 |
|
|
120 |
|
/* Loaded BSDF data */ |
121 |
|
typedef struct { |
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 */ |
245 |
|
|
246 |
|
/* Application-specific BSDF error translator (not part of our library) */ |
247 |
|
extern char *transSDError(SDError ec); |
243 |
– |
|
244 |
– |
/*################################################################*/ |
245 |
– |
/*######### DEPRECATED DEFINITIONS AWAITING PERMANENT REMOVAL #######*/ |
246 |
– |
/* |
247 |
– |
* Header for BSDF i/o and access routines |
248 |
– |
*/ |
249 |
– |
|
250 |
– |
#include "mat4.h" |
251 |
– |
/* up directions */ |
252 |
– |
typedef enum { |
253 |
– |
UDzneg=-3, |
254 |
– |
UDyneg=-2, |
255 |
– |
UDxneg=-1, |
256 |
– |
UDunknown=0, |
257 |
– |
UDxpos=1, |
258 |
– |
UDypos=2, |
259 |
– |
UDzpos=3 |
260 |
– |
} UpDir; |
261 |
– |
/* BSDF coordinate calculation routines */ |
262 |
– |
/* vectors always point away from surface */ |
263 |
– |
|
264 |
– |
typedef int b_vecf2(FVECT v, int n, void *cd); |
265 |
– |
typedef int b_ndxf2(FVECT v, void *cd); |
266 |
– |
typedef double b_radf2(int n, void *cd); |
267 |
– |
|
268 |
– |
/* Bidirectional Scattering Distribution Function */ |
269 |
– |
struct BSDF_data { |
270 |
– |
int ninc; /* number of incoming directions */ |
271 |
– |
int nout; /* number of outgoing directions */ |
272 |
– |
float dim[3]; /* width, height, thickness (meters) */ |
273 |
– |
char *mgf; /* geometric description (if any) */ |
274 |
– |
void *ib_priv; /* input basis private data */ |
275 |
– |
b_vecf2 *ib_vec; /* get input vector from index */ |
276 |
– |
b_ndxf2 *ib_ndx; /* get input index from vector */ |
277 |
– |
b_radf2 *ib_ohm; /* get input radius for index */ |
278 |
– |
void *ob_priv; /* output basis private data */ |
279 |
– |
b_vecf2 *ob_vec; /* get output vector from index */ |
280 |
– |
b_ndxf2 *ob_ndx; /* get output index from vector */ |
281 |
– |
b_radf2 *ob_ohm; /* get output radius for index */ |
282 |
– |
float *bsdf; /* scattering distribution data */ |
283 |
– |
}; /* bidirectional scattering distrib. func. */ |
284 |
– |
|
285 |
– |
#define getBSDF_incvec(v,b,i) (*(b)->ib_vec)(v,i,(b)->ib_priv) |
286 |
– |
#define getBSDF_incndx(b,v) (*(b)->ib_ndx)(v,(b)->ib_priv) |
287 |
– |
#define getBSDF_incohm(b,i) (*(b)->ib_ohm)(i,(b)->ib_priv) |
288 |
– |
#define getBSDF_outvec(v,b,o) (*(b)->ob_vec)(v,o,(b)->ob_priv) |
289 |
– |
#define getBSDF_outndx(b,v) (*(b)->ob_ndx)(v,(b)->ob_priv) |
290 |
– |
#define getBSDF_outohm(b,o) (*(b)->ob_ohm)(o,(b)->ob_priv) |
291 |
– |
#define BSDF_value(b,i,o) (b)->bsdf[(o)*(b)->ninc + (i)] |
292 |
– |
|
293 |
– |
extern struct BSDF_data *load_BSDF(char *fname); |
294 |
– |
extern void free_BSDF(struct BSDF_data *b); |
295 |
– |
extern int r_BSDF_incvec(FVECT v, struct BSDF_data *b, int i, |
296 |
– |
double rv, MAT4 xm); |
297 |
– |
extern int r_BSDF_outvec(FVECT v, struct BSDF_data *b, int o, |
298 |
– |
double rv, MAT4 xm); |
299 |
– |
extern int getBSDF_xfm(MAT4 xm, FVECT nrm, UpDir ud, char *xfbuf); |
300 |
– |
|
301 |
– |
/*######### END DEPRECATED DEFINITIONS #######*/ |
302 |
– |
/*################################################################*/ |
248 |
|
|
249 |
|
#ifdef __cplusplus |
250 |
|
} |