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); |
236 |
– |
|
237 |
– |
/*################################################################*/ |
238 |
– |
/*######### DEPRECATED DEFINITIONS AWAITING PERMANENT REMOVAL #######*/ |
239 |
– |
/* |
240 |
– |
* Header for BSDF i/o and access routines |
241 |
– |
*/ |
242 |
– |
|
243 |
– |
#include "mat4.h" |
244 |
– |
/* up directions */ |
245 |
– |
typedef enum { |
246 |
– |
UDzneg=-3, |
247 |
– |
UDyneg=-2, |
248 |
– |
UDxneg=-1, |
249 |
– |
UDunknown=0, |
250 |
– |
UDxpos=1, |
251 |
– |
UDypos=2, |
252 |
– |
UDzpos=3 |
253 |
– |
} UpDir; |
254 |
– |
/* BSDF coordinate calculation routines */ |
255 |
– |
/* vectors always point away from surface */ |
256 |
– |
|
257 |
– |
typedef int b_vecf2(FVECT v, int n, void *cd); |
258 |
– |
typedef int b_ndxf2(FVECT v, void *cd); |
259 |
– |
typedef double b_radf2(int n, void *cd); |
260 |
– |
|
261 |
– |
/* Bidirectional Scattering Distribution Function */ |
262 |
– |
struct BSDF_data { |
263 |
– |
int ninc; /* number of incoming directions */ |
264 |
– |
int nout; /* number of outgoing directions */ |
265 |
– |
float dim[3]; /* width, height, thickness (meters) */ |
266 |
– |
char *mgf; /* geometric description (if any) */ |
267 |
– |
void *ib_priv; /* input basis private data */ |
268 |
– |
b_vecf2 *ib_vec; /* get input vector from index */ |
269 |
– |
b_ndxf2 *ib_ndx; /* get input index from vector */ |
270 |
– |
b_radf2 *ib_ohm; /* get input radius for index */ |
271 |
– |
void *ob_priv; /* output basis private data */ |
272 |
– |
b_vecf2 *ob_vec; /* get output vector from index */ |
273 |
– |
b_ndxf2 *ob_ndx; /* get output index from vector */ |
274 |
– |
b_radf2 *ob_ohm; /* get output radius for index */ |
275 |
– |
float *bsdf; /* scattering distribution data */ |
276 |
– |
}; /* bidirectional scattering distrib. func. */ |
277 |
– |
|
278 |
– |
#define getBSDF_incvec(v,b,i) (*(b)->ib_vec)(v,i,(b)->ib_priv) |
279 |
– |
#define getBSDF_incndx(b,v) (*(b)->ib_ndx)(v,(b)->ib_priv) |
280 |
– |
#define getBSDF_incohm(b,i) (*(b)->ib_ohm)(i,(b)->ib_priv) |
281 |
– |
#define getBSDF_outvec(v,b,o) (*(b)->ob_vec)(v,o,(b)->ob_priv) |
282 |
– |
#define getBSDF_outndx(b,v) (*(b)->ob_ndx)(v,(b)->ob_priv) |
283 |
– |
#define getBSDF_outohm(b,o) (*(b)->ob_ohm)(o,(b)->ob_priv) |
284 |
– |
#define BSDF_value(b,i,o) (b)->bsdf[(o)*(b)->ninc + (i)] |
285 |
– |
|
286 |
– |
extern struct BSDF_data *load_BSDF(char *fname); |
287 |
– |
extern void free_BSDF(struct BSDF_data *b); |
288 |
– |
extern int r_BSDF_incvec(FVECT v, struct BSDF_data *b, int i, |
289 |
– |
double rv, MAT4 xm); |
290 |
– |
extern int r_BSDF_outvec(FVECT v, struct BSDF_data *b, int o, |
291 |
– |
double rv, MAT4 xm); |
292 |
– |
extern int getBSDF_xfm(MAT4 xm, FVECT nrm, UpDir ud, char *xfbuf); |
293 |
– |
|
294 |
– |
/*######### END DEPRECATED DEFINITIONS #######*/ |
295 |
– |
/*################################################################*/ |
248 |
|
|
249 |
|
#ifdef __cplusplus |
250 |
|
} |