11 |
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/* view types */ |
12 |
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#define VT_PER 'v' /* perspective */ |
13 |
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#define VT_PAR 'l' /* parallel */ |
14 |
+ |
#define VT_ANG 'a' /* angular fisheye */ |
15 |
+ |
#define VT_HEM 'h' /* hemispherical fisheye */ |
16 |
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|
17 |
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typedef struct { |
18 |
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int type; /* view type */ |
21 |
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FVECT vup; /* view up */ |
22 |
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double horiz; /* horizontal view size */ |
23 |
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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 vhn2; /* DOT(vhinc,vhinc) */ |
29 |
< |
double vvn2; /* 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 |
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} VIEW; /* view parameters */ |
31 |
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32 |
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extern VIEW stdview; |
33 |
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|
34 |
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extern char *setview(); |
35 |
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|
36 |
< |
#define STDVIEW(h) {VT_PER,0.,0.,0.,0.,1.,0.,0.,0.,1.,45.,45.,h,h} |
36 |
> |
extern double sqrt(); |
37 |
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|
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 |
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#define VIEWSTR "VIEW=" |
43 |
+ |
#define VIEWSTRL 5 |