| 11 |
|
/* view types */ |
| 12 |
|
#define VT_PER 'v' /* perspective */ |
| 13 |
|
#define VT_PAR 'l' /* parallel */ |
| 14 |
+ |
#define VT_ANG 'a' /* angular fisheye */ |
| 15 |
+ |
#define VT_HEM 'h' /* hemispherical fisheye */ |
| 16 |
|
|
| 17 |
|
typedef struct { |
| 18 |
|
int type; /* view type */ |
| 21 |
|
FVECT vup; /* view up */ |
| 22 |
|
double horiz; /* horizontal view size */ |
| 23 |
|
double vert; /* vertical view size */ |
| 24 |
< |
int hresolu; /* horizontal resolution */ |
| 25 |
< |
int vresolu; /* vertical resolution */ |
| 26 |
< |
FVECT vhinc; /* computed horizontal increment */ |
| 27 |
< |
FVECT vvinc; /* computed vertical increment */ |
| 28 |
< |
double vhs2; /* 1.0/DOT(vhinc,vhinc) */ |
| 29 |
< |
double vvs2; /* 1.0/DOT(vvinc,vvinc) */ |
| 24 |
> |
double hoff; /* horizontal image offset */ |
| 25 |
> |
double voff; /* vertical image offset */ |
| 26 |
> |
FVECT hvec; /* computed horizontal image vector */ |
| 27 |
> |
FVECT vvec; /* computed vertical image vector */ |
| 28 |
> |
double hn2; /* DOT(hvec,hvec) */ |
| 29 |
> |
double vn2; /* DOT(vvec,vvec) */ |
| 30 |
|
} VIEW; /* view parameters */ |
| 31 |
|
|
| 32 |
|
extern VIEW stdview; |
| 33 |
|
|
| 34 |
|
extern char *setview(); |
| 35 |
|
|
| 36 |
< |
#define STDVIEW(h) {VT_PER,0.,0.,0.,0.,1.,0.,0.,0.,1.,45.,45.,h,h} |
| 36 |
> |
extern double sqrt(); |
| 37 |
> |
|
| 38 |
> |
#define viewaspect(v) sqrt((v)->vn2/(v)->hn2) |
| 39 |
> |
|
| 40 |
> |
#define STDVIEW {VT_PER,0.,0.,0.,0.,1.,0.,0.,0.,1.,45.,45.,0.,0.} |
| 41 |
|
|
| 42 |
|
#define VIEWSTR "VIEW=" |
