37 |
|
extern int nglarangs; |
38 |
|
extern double maxtheta; /* maximum glare angle (in radians) */ |
39 |
|
extern int hsize; /* horizontal size */ |
40 |
– |
extern int hlim; /* horizontal limit of central view */ |
40 |
|
|
41 |
|
#define nglardirs (2*nglarangs+1) |
42 |
|
#define vsize (sampdens-1) |
43 |
< |
#define h_theta(h) (-(double)(h)/(double)sampdens) |
43 |
> |
#define hscale(v) sqrt(1.-(double)((v)*(v)/(sampdens*sampdens))) |
44 |
> |
#define hlim(v) (int)(maxtheta*sampdens*hscale(v)) |
45 |
> |
#define h_theta(h,v) (-(h)/(sampdens*hscale(v))) |
46 |
|
|
47 |
|
extern struct illum { |
48 |
|
float theta; /* glare direction */ |
67 |
|
struct source *next; /* next source in list */ |
68 |
|
} *donelist; /* finished sources */ |
69 |
|
|
69 |
– |
typedef struct { |
70 |
– |
double err; /* cumulative error */ |
71 |
– |
double prob; /* target probability */ |
72 |
– |
} SPANERR; /* probability record for computing spans */ |
73 |
– |
|
70 |
|
extern double getviewpix(); |
71 |
+ |
extern double pixsize(); |
72 |
|
|
73 |
|
extern long npixinvw; /* number of samples in view */ |
74 |
|
extern long npixmiss; /* number of samples missing */ |