| 57 |
|
#define INP_QUAD3 4 /* 180-270 degree quadrant */ |
| 58 |
|
#define INP_QUAD4 8 /* 270-360 degree quadrant */ |
| 59 |
|
|
| 60 |
+ |
/* active grid resolution */ |
| 61 |
+ |
extern int grid_res; |
| 62 |
|
/* coverage/symmetry using INP_QUAD? flags */ |
| 63 |
|
extern int inp_coverage; |
| 64 |
|
|
| 69 |
|
extern int input_orient; |
| 70 |
|
extern int output_orient; |
| 71 |
|
|
| 72 |
+ |
/* log BSDF histogram */ |
| 73 |
+ |
#define HISTLEN 256 |
| 74 |
+ |
#define BSDF2BIG (1./M_PI) |
| 75 |
+ |
#define BSDF2SML 1e-8 |
| 76 |
+ |
#define HISTLNR 17.2759509 /* log(BSDF2BIG/BSDF2SML) */ |
| 77 |
+ |
extern int bsdf_hist[HISTLEN]; |
| 78 |
+ |
#define histndx(v) (int)(log((v)*(1./BSDF2SML))*(HISTLEN/HISTLNR)) |
| 79 |
+ |
#define histval(i) (exp(((i)+.5)*(HISTLNR/HISTLEN))*BSDF2SML) |
| 80 |
+ |
|
| 81 |
+ |
/* BSDF value for boundary regions */ |
| 82 |
+ |
extern double bsdf_min; |
| 83 |
+ |
|
| 84 |
|
/* processed incident DSF measurements */ |
| 85 |
|
extern RBFNODE *dsf_list; |
| 86 |
|
|
| 125 |
|
|
| 126 |
|
/* Reverse symmetry for an RBF distribution */ |
| 127 |
|
extern void rev_rbf_symmetry(RBFNODE *rbf, int sym); |
| 128 |
+ |
|
| 129 |
+ |
/* Rotate RBF to correspond to given incident vector */ |
| 130 |
+ |
extern void rotate_rbf(RBFNODE *rbf, const FVECT invec); |
| 131 |
|
|
| 132 |
|
/* Compute volume associated with Gaussian lobe */ |
| 133 |
|
extern double rbf_volume(const RBFVAL *rbfp); |
