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/* Application-specific BSDF error translator (not part of our library) */ |
247 |
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extern char *transSDError(SDError ec); |
248 |
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|
249 |
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/*################################################################*/ |
250 |
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/*######### DEPRECATED DEFINITIONS AWAITING PERMANENT REMOVAL #######*/ |
251 |
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/* |
252 |
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* Header for BSDF i/o and access routines |
253 |
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*/ |
254 |
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|
255 |
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#include "mat4.h" |
256 |
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/* up directions */ |
257 |
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typedef enum { |
258 |
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UDzneg=-3, |
259 |
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UDyneg=-2, |
260 |
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UDxneg=-1, |
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UDunknown=0, |
262 |
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UDxpos=1, |
263 |
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UDypos=2, |
264 |
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UDzpos=3 |
265 |
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} UpDir; |
266 |
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/* BSDF coordinate calculation routines */ |
267 |
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/* vectors always point away from surface */ |
268 |
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|
269 |
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typedef int b_vecf2(FVECT v, int n, void *cd); |
270 |
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typedef int b_ndxf2(FVECT v, void *cd); |
271 |
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typedef double b_radf2(int n, void *cd); |
272 |
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|
273 |
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/* Bidirectional Scattering Distribution Function */ |
274 |
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struct BSDF_data { |
275 |
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int ninc; /* number of incoming directions */ |
276 |
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int nout; /* number of outgoing directions */ |
277 |
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float dim[3]; /* width, height, thickness (meters) */ |
278 |
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char *mgf; /* geometric description (if any) */ |
279 |
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void *ib_priv; /* input basis private data */ |
280 |
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b_vecf2 *ib_vec; /* get input vector from index */ |
281 |
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b_ndxf2 *ib_ndx; /* get input index from vector */ |
282 |
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b_radf2 *ib_ohm; /* get input radius for index */ |
283 |
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void *ob_priv; /* output basis private data */ |
284 |
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b_vecf2 *ob_vec; /* get output vector from index */ |
285 |
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b_ndxf2 *ob_ndx; /* get output index from vector */ |
286 |
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b_radf2 *ob_ohm; /* get output radius for index */ |
287 |
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float *bsdf; /* scattering distribution data */ |
288 |
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}; /* bidirectional scattering distrib. func. */ |
289 |
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|
290 |
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#define getBSDF_incvec(v,b,i) (*(b)->ib_vec)(v,i,(b)->ib_priv) |
291 |
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#define getBSDF_incndx(b,v) (*(b)->ib_ndx)(v,(b)->ib_priv) |
292 |
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#define getBSDF_incohm(b,i) (*(b)->ib_ohm)(i,(b)->ib_priv) |
293 |
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#define getBSDF_outvec(v,b,o) (*(b)->ob_vec)(v,o,(b)->ob_priv) |
294 |
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#define getBSDF_outndx(b,v) (*(b)->ob_ndx)(v,(b)->ob_priv) |
295 |
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#define getBSDF_outohm(b,o) (*(b)->ob_ohm)(o,(b)->ob_priv) |
296 |
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#define BSDF_value(b,i,o) (b)->bsdf[(o)*(b)->ninc + (i)] |
297 |
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|
298 |
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extern struct BSDF_data *load_BSDF(char *fname); |
299 |
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extern void free_BSDF(struct BSDF_data *b); |
300 |
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extern int r_BSDF_incvec(FVECT v, struct BSDF_data *b, int i, |
301 |
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double rv, MAT4 xm); |
302 |
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extern int r_BSDF_outvec(FVECT v, struct BSDF_data *b, int o, |
303 |
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double rv, MAT4 xm); |
304 |
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extern int getBSDF_xfm(MAT4 xm, FVECT nrm, UpDir ud, char *xfbuf); |
305 |
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|
306 |
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/*######### END DEPRECATED DEFINITIONS #######*/ |
307 |
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/*################################################################*/ |
308 |
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|
249 |
|
#ifdef __cplusplus |
250 |
|
} |
251 |
|
#endif |