src/common/face.h

/* Copyright (c) 1986 Regents of the University of California */

/* SCCSid "$SunId$ LBL" */

/*
 *  face.h - header for routines using polygonal faces.
 *
 *     8/30/85
 */

#define  VERTEX(f,n)    ((f)->va + 3*(n))

typedef struct {        /* a polygonal face */
        FVECT  norm;            /* the plane's unit normal */
        double  const;          /* plane equation:  DOT(norm, v) == const */
        double  area;           /* area of face */
        double  *va;            /* vertex array (o->oargs.farg) */
        short  nv;              /* # of vertices */
        short  ax;              /* axis closest to normal */
} FACE;

extern FACE  *getface();
Revision:	1.1
Committed:	Thu Feb 2 10:34:15 1989 UTC (35 years, 3 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Log Message:	Initial revision
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1986 Regents of the University of California */
2
3			/* SCCSid "$SunId$ LBL" */
4
5			/*
6			* face.h - header for routines using polygonal faces.
7			*
8			* 8/30/85
9			*/
10
11			#define VERTEX(f,n) ((f)->va + 3*(n))
12
13			typedef struct { /* a polygonal face */
14			FVECT norm; /* the plane's unit normal */
15			double const; /* plane equation: DOT(norm, v) == const */
16			double area; /* area of face */
17			double va; / vertex array (o->oargs.farg) */
18			short nv; /* # of vertices */
19			short ax; /* axis closest to normal */
20			} FACE;
21
22			extern FACE *getface();