| 1 |
greg |
1.1 |
/* Copyright (c) 1988 Regents of the University of California */
|
| 2 |
|
|
|
| 3 |
|
|
/* SCCSid "$SunId$ LBL" */
|
| 4 |
|
|
|
| 5 |
|
|
/*
|
| 6 |
|
|
* view.h - header file for image generation.
|
| 7 |
|
|
*
|
| 8 |
|
|
* 9/19/88
|
| 9 |
|
|
*/
|
| 10 |
|
|
|
| 11 |
|
|
/* view types */
|
| 12 |
|
|
#define VT_PER 'v' /* perspective */
|
| 13 |
|
|
#define VT_PAR 'l' /* parallel */
|
| 14 |
greg |
1.6 |
#define VT_ANG 'a' /* angular fisheye */
|
| 15 |
|
|
#define VT_HEM 'h' /* hemispherical fisheye */
|
| 16 |
greg |
1.1 |
|
| 17 |
|
|
typedef struct {
|
| 18 |
|
|
int type; /* view type */
|
| 19 |
|
|
FVECT vp; /* view origin */
|
| 20 |
|
|
FVECT vdir; /* view direction */
|
| 21 |
|
|
FVECT vup; /* view up */
|
| 22 |
|
|
double horiz; /* horizontal view size */
|
| 23 |
|
|
double vert; /* vertical view size */
|
| 24 |
greg |
1.4 |
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 |
greg |
1.1 |
} VIEW; /* view parameters */
|
| 31 |
|
|
|
| 32 |
|
|
extern VIEW stdview;
|
| 33 |
|
|
|
| 34 |
|
|
extern char *setview();
|
| 35 |
|
|
|
| 36 |
greg |
1.4 |
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 |
greg |
1.1 |
|
| 42 |
|
|
#define VIEWSTR "VIEW="
|
| 43 |
greg |
1.7 |
#define VIEWSTRL 5
|
