src/common/view.h

/* Copyright (c) 1988 Regents of the University of California */

/* SCCSid "$SunId$ LBL" */

/*
 *  view.h - header file for image generation.
 *
 *     9/19/88
 */

                                /* view types */
#define  VT_PER         'v'             /* perspective */
#define  VT_PAR         'l'             /* parallel */
#define  VT_ANG         'a'             /* angular fisheye */
#define  VT_HEM         'h'             /* hemispherical fisheye */

typedef struct {
        int  type;              /* view type */
        FVECT  vp;              /* view origin */
        FVECT  vdir;            /* view direction */
        FVECT  vup;             /* view up */
        double  horiz;          /* horizontal view size */
        double  vert;           /* vertical view size */
        double  hoff;           /* horizontal image offset */
        double  voff;           /* vertical image offset */
        FVECT  hvec;            /* computed horizontal image vector */
        FVECT  vvec;            /* computed vertical image vector */
        double  hn2;            /* DOT(hvec,hvec) */
        double  vn2;            /* DOT(vvec,vvec) */
} VIEW;                 /* view parameters */

extern VIEW  stdview;

extern char  *setview();

#define  viewaspect(v)  sqrt((v)->vn2/(v)->hn2)

#define  STDVIEW        {VT_PER,0.,0.,0.,0.,1.,0.,0.,0.,1.,45.,45.,0.,0.}

#define  VIEWSTR        "VIEW="
#define  VIEWSTRL       5
Revision:	2.2
Committed:	Fri Oct 2 15:56:31 1992 UTC (31 years, 7 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.1:	+0 -2 lines
Log Message:	Removed problematic math function declarations
#	User	Rev	Content
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	#define viewaspect(v) sqrt((v)->vn2/(v)->hn2)
37
38			#define STDVIEW {VT_PER,0.,0.,0.,0.,1.,0.,0.,0.,1.,45.,45.,0.,0.}
39	greg	1.1
40			#define VIEWSTR "VIEW="
41	greg	1.7	#define VIEWSTRL 5