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 */

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 */
        int  hresolu;           /* horizontal resolution */
        int  vresolu;           /* vertical resolution */
        FVECT  vhinc;           /* computed horizontal increment */
        FVECT  vvinc;           /* computed vertical increment */
        double  vhs2;           /* 1.0/DOT(vhinc,vhinc) */
        double  vvs2;           /* 1.0/DOT(vvinc,vvinc) */
} VIEW;                 /* view parameters */

extern VIEW  stdview;

extern char  *setview();

#define  STDVIEW(h)     {VT_PER,0.,0.,0.,0.,1.,0.,0.,0.,1.,45.,45.,h,h}

#define  VIEWSTR        "VIEW="
Revision:	1.2
Committed:	Sun Dec 10 13:41:08 1989 UTC (34 years, 4 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+2 -0 lines
Log Message:	added pixelview() and sskip() routines
#	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
15			typedef struct {
16			int type; /* view type */
17			FVECT vp; /* view origin */
18			FVECT vdir; /* view direction */
19			FVECT vup; /* view up */
20			double horiz; /* horizontal view size */
21			double vert; /* vertical view size */
22			int hresolu; /* horizontal resolution */
23			int vresolu; /* vertical resolution */
24			FVECT vhinc; /* computed horizontal increment */
25			FVECT vvinc; /* computed vertical increment */
26	greg	1.2	double vhs2; /* 1.0/DOT(vhinc,vhinc) */
27			double vvs2; /* 1.0/DOT(vvinc,vvinc) */
28	greg	1.1	} VIEW; /* view parameters */
29
30			extern VIEW stdview;
31
32			extern char *setview();
33
34			#define STDVIEW(h) {VT_PER,0.,0.,0.,0.,1.,0.,0.,0.,1.,45.,45.,h,h}
35
36			#define VIEWSTR "VIEW="