| 84 |
|
typedef struct SDComp_s SDComponent; |
| 85 |
|
|
| 86 |
|
/* Methods needed to handle BSDF components (nothing is optional) */ |
| 87 |
– |
#ifdef __cplusplus |
| 88 |
– |
/* in C++, the const puts the type into the local anonymous namespace, |
| 89 |
– |
making it a private (and different) type for each file using this header. |
| 90 |
– |
*/ |
| 87 |
|
typedef struct { |
| 92 |
– |
#else |
| 93 |
– |
typedef const struct { |
| 94 |
– |
#endif |
| 88 |
|
/* return non-diffuse BSDF */ |
| 89 |
< |
int (*getBSDFs)(float coef[SDmaxCh], const FVECT outVec, |
| 90 |
< |
const FVECT inVec, SDComponent *sdc); |
| 89 |
> |
int (*getBSDFs)(float coef[SDmaxCh], const FVECT inVec, |
| 90 |
> |
const FVECT outVec, SDComponent *sdc); |
| 91 |
|
/* query non-diffuse PSA for vector */ |
| 92 |
|
SDError (*queryProjSA)(double *psa, const FVECT v1, |
| 93 |
|
const RREAL *v2, int qflags, |
| 104 |
|
/* Structure to hold a spectral BSDF component (typedef SDComponent above) */ |
| 105 |
|
struct SDComp_s { |
| 106 |
|
C_COLOR cspec[SDmaxCh]; /* component spectral bases */ |
| 107 |
< |
SDFunc *func; /* methods for this component */ |
| 107 |
> |
const SDFunc *func; /* methods for this component */ |
| 108 |
|
void *dist; /* loaded distribution data */ |
| 109 |
|
SDCDst *cdList; /* cumulative distribution cache */ |
| 110 |
|
}; |
| 126 |
|
double dim[3]; /* width, height, thickness (meters) */ |
| 127 |
|
SDValue rLambFront; /* diffuse front reflectance */ |
| 128 |
|
SDValue rLambBack; /* diffuse rear reflectance */ |
| 129 |
< |
SDValue tLamb; /* diffuse transmission */ |
| 129 |
> |
SDValue tLambFront; /* diffuse front transmittance */ |
| 130 |
> |
SDValue tLambBack; /* diffuse back transmittance */ |
| 131 |
|
SDSpectralDF *rf, *rb; /* non-diffuse BRDF components */ |
| 132 |
|
SDSpectralDF *tf, *tb; /* non-diffuse BTDF components */ |
| 133 |
|
} SDData; |
| 146 |
|
#define SDretainAll 2 /* also keep cumulative cache data */ |
| 147 |
|
|
| 148 |
|
extern int SDretainSet; /* =SDretainNone by default */ |
| 149 |
+ |
extern unsigned long SDmaxCache; /* =0 (unlimited) by default */ |
| 150 |
|
|
| 151 |
|
/***************************************************************** |
| 152 |
|
* The following routines are less commonly used by applications. |
| 215 |
|
const SDData *sd); |
| 216 |
|
|
| 217 |
|
/* Return BSDF for the given incident and scattered ray vectors */ |
| 218 |
< |
extern SDError SDevalBSDF(SDValue *sv, const FVECT outVec, |
| 219 |
< |
const FVECT inVec, const SDData *sd); |
| 218 |
> |
extern SDError SDevalBSDF(SDValue *sv, const FVECT inVec, |
| 219 |
> |
const FVECT outVec, const SDData *sd); |
| 220 |
|
|
| 221 |
|
/* Compute directional hemispherical scattering at given incident angle */ |
| 222 |
|
extern double SDdirectHemi(const FVECT inVec, |